No. 10

INTERNATIONAL UNION OF GEODESY AND GEOPHYSICS ASSOCIATION OF GEOMAGNETISM AND AERONOMY

President: Dr. V. A. Troitskaya Soviet IGC Committee Molodezhnaya 3 Moscow B-296, USSR Vice Presidents: Dr. G. M. Weill Dr. J. G. Roederer General Secretary and Editor of IAGA News: Dr. Leroy R. Alldredge NOAA Research Laboratories Boulder, Colorado 80302, USA

CONTENTS

Page General Information 1 Newly Elected Officers 2 Internal Organization 3 Minutes of Executive Committee 8 Resolutions 15 Selected Items of Interest 29 Future Symposia 34 Plans for the IAGA Second General Assembly, Kyoto, Japan, 1973 36

Puhlj~Ation ~ ·:z..r7 MOSCOW STATE UNIV1DRSITY GENERAL INFORMATION

The XV General Assemb~y of IUGG was held at the Moscow State University, Moscow, USSR, from 2 August to 14 August 1971. IAGA was provided with excellent quarters and facilities for lecture halls and for the President and Secretariat. The local committee did an excellent job in reproducing a 506 page program and abstract booklet containing the complete IAGA program for the Assembly. Appreciation is extended to the Local Organizing Committee for their work. Special thanks is given to Dr. B.S. Volvovsky, General Secretary of the Organizing Committee; Dr. A. D. Powsner, General Secretary of the Geophysical Committees; Dr. K. Yu. Zybin who was specifically responsible for the Geomagnetism and Aeronomy arrangements and to :rvirs. N.A. Beloussova who was in charge of the ladies program. Two hundred and eighty scientists registered for the meet­ ings from outside the USSR and approximately 200 Soviet scient­ ists attended the meetings. It should be noted here that IAGA will hold its Second General Scientific Assembly in Kyoto, Japan starting about 10 (exact time to be decided later). It has also been decided that the XVI IUGG General Assembly will be held in Paris, in 1975. This IAGA News is being published very rapidly following the Assembly to get the resolutions distributed as quickly as possible and to show chanses in the structure of the various Commissions. It is stressed. here th<...t the new organization shown should be considered as tentative. Some of the Reporters shown may not have been contacted by the Chairman. Membership (not given in this News) of many of' the Working Groups may not have changed very much, but Working Group Reporters are urged to submit to the General Secretary via their Commission Chair­ men nominations to complete their working group structures as soon as possible, keeping in mind that a maximum of 12 scientists are allowed in ony one working group and a good geographical distribution should be obtained where possible. NNNLY J~L i ~C'l'ED O:E'FIC~RS

'I'Jw newly elected officers of the IAGA for t.IH.: period 1971-1975 are as follows:

~CU'l'IV~ CO~il:ITTEE

President: Dr. V. A. Troitskaya Soviet IGC Committee Molodezhnaya 3 Moscow B-296, USSH

Vice Presidents: Dr. G. Iv'i. V~eill Dr. J. G. Roederer

General Secretary: Dr. IJeroy R. Alldredge NOAA Environmental Research Laboratories Boulder, Colorado 80302, USA

Members: Dr. T. Nagata (paf:t President) Dr. A. J. Dessler Dr. J. w. Dungey Dr. M. Nicolet Dr. o. Schneider Dr. R. Turaj lie

2 IN'rERNAL ORG!\NIZATIOH

~)l'~veral changes were made in the IAGA Commissions and ',1, ot · k int~ Group structure. Commission Chairmen and Working ,, ,·oup Heporters were changed. In several cases there were · I) JTJ , ~ modifications made in nmnes of Working Groups and tr<..'.ns­ i'L' r of Working Groups between Commis sions.

It was decided that the two IAGA/IAMAP Joint Committees, 11 Lmospheric ~:lectrici ty anc' Lunar Variations, be abolished as .Jr )i nt Committees. IJ. 'he D.tmospheric e lectricity work was assign­ Pel to Il\M.AP anet the lunar variation vwrk to IAGA.

Details of the Working Group me mbership is not y e t avail­ :t b\e but the organization as far as it is now known and which :;l,ould exist until the Scientific General Ass embly in Kyoto, ln 1973, is as follows:

Title: Observatories and Instruments Chairman: A.F. DeVuyst Co-chairman: P.H. Serson Centre ae Physique Dominion Obs. du Globe Dourbes l.Jept. of Mines anc Nismes-Prov. de 'l'ech. Surveys N anur, Ottawa, Ontario Working Groups 1 ~vendsen Magnetic Observatories 1 Reporter: K.L. (USA) Geomagnetic and Telluric Instrumentation 1 2 Reporter: V.N. Bobrov (USSR) Comparison of Magnetic Standards r 3 Reporter: E.K. Lauridsen (Den.) Processing Techniques for Observational Data 14 Reporter: E.I. Loomer (Carr~da) IAGA COEi'::ISSION II Title: Representation of Mair.. Magnetic :Fields Chairman: B.R. Leaton Co-chairman: A.J. Zmuda Royal Greenwich Obs. Applie~- I)hys. Lab. J!erstmonceux Castle Johns Hopkins Dni. Balisham, Sussex 8621 Geor ~ ia Ave •. England ul(·. l ver C:'uprJ.nc;, • 1\(:dr.1 • 20910, USA Working Groups Land and J\irborne Surveys II1 Reporter: P .H. Scrson (Canada) c~ cean Shipborne Gurveys II Reporter: M.Ni. Ivanov (US~::R) 2 l'iear ]!;arth Satellites rr Reporter: J.C. Cain (USA) 3 Analysis of Geomagnetic Fields II4 Pt>nn·pf:rq' • ll , T 7.nlllr1 ~~ (TT: ·. 1\ ~ «eporter: A.N. Fushkov (USSH) Reporter: H. Maeda (Japan)

IJ\GA COMMISSION III

'I' I L I ~ t Magnetism of the Earth's Interior Chairman: T. Rikitake Co-chairman: G.N. Petrova Res. Inst. Geophys. InstitutA The University of of the Academy of : if Tokyo Physics of the :h:nrl.h, Tokyo , Japan B. Gruzinskaya 10, Moscow G-242, USS:H Working Groups

Electro-Dynamics III1 Reporter: F.M. Lowes (U.K.) (USA) Secular Variation III2 Reporter: A.V. Cox ~ lectromagnetic InductJ.on III Reporter: D.I. Gough (Canada 3 Rock Magnetism III4 Reporter: C.M. Carmichael (Canada) Archeomagnetism III Reporter: R.L. DuBois (USA) 5 Paleomagnetism III6 Reporter: K.M. Creer (U.K.) Geomagnetic Anomalies III7 Reporter: A. Hahn (W. Germany) IAGA COMMISSION IV Title: Magnetic Variations and Disturbances

Chairman: J.A. Jacobs Co-chairman: M. SugitU'a Kill am Memorial NASA , GSFC University of Alberta Code 612 Edmonton, Alberta, Greenbelt, Md. Canada 20771, USA

~orking Groups Morpholog,y and Indices IV Reporter: 1 D. VanSabben (Neth.) Daily Variations IV2 Reporter: D.J. Stone (U.K.) Equatorial Electrojet rv Reporter: Osborne 3 D.G. (U.K.) Special Disturbance Events IV4 Reporter: s .I. Akasofu (USA) Micropulsations IV5 Reporter: R. Gendrin (France) Magnetospheric Field Variations IVh Reporter: M. Sugiura (USA)

Conjugate Points IV 7 Reporter: O.M. Haspopov (USSR) IAGA CO Uil\U SSION V

It 1 1. 'I P. : Solar-Magnetosphere Re lations

J. G. J ~' oed.erer Co - chairman: e.G. Fa l tb o.mmar Physics Department The Ti oyal Inst. of Universi'ty ur venver 'l'ech., Division of P .c. Box 10127 Plasma I hysic s Denver, CO. 80310 USA Stockh~lm 70, v.:orking Groups

~i t' I ur \'.1ind Interaction v.. i th Barth and. P lanet~ V Reporter: N. F1. Ness (USA) t.'!orpholog;y of Radiation Belts v2 Re porter: D. J . Williams (USA) l'nrticle - Field Interactions v Reporter: 3 Cold Plasma and Low .Energy Farticles V Bepo:tter4 : K.I. Gringauz (USSR) :;olar Energetic Particles v Reporter: '1' . Obayashi (Japan) 5 IAGA C01KI LSION VI

'.1 i tle: Aurora Chairman: G.G. Shepherd Co-chairman : S . I. Isaev Dept. of Physics Pol ar Geophys1cal York Unj_versi ty I nst. , Apati ty, Downsview, Toronto l'i·,urman_ Regi on Cane-d a USSR 'i·J orkinr Groups

Morphology VJ1 Reporter: A. - ~~g; el and (Nor way) Spectroscopy and ~xitation VI Reporter: A. Vall~nce Jones 2 (Canada) Radio Aurora vr Reporter: E. S . Unwin (N . Zealand) 3 Particles and Fie lds Effects VI L ~ Reporter: D. S • .t.vans (USA) l tGA C C~LISSICN VII

'.L'i t le: Airel ow

Chc.... irmc:.n: I:. Gadsden Co - chairman : B. A. Tinsley J.ept. of Nnt. lhil. UniversitJ of Texas Ab erdeen University at Da l las ''b -, . z·U t"' r; erQeen A B9 , .J .. !J , r- .c • .3 036:7 Scutlond Dalla s , TX . 75230 US},

\\ior.kjnr; Groups

Jnn t.;:rurHr·rd,}; : n< i Cali hl''l.' L, ·l'onVl~ 'J -., ncI I , po...... -' • ·t c 'T"''· : l'\ • IJ...'l •r-t .. ·"I ~- ls (J

I ~ c • I JiH.' L (} (' : J • C • C • WH l ko r (\ J! : 1\ ) l'l1 o-Lumctry CJ. nd Spectroscopy VII 3 Reporter: T. Tohmatsu (Japan) 1 ,uboratory Data VII4 Reporter: H.I. Schiff (Canada.) Additional Reporters at LarGe Mesospheric Emissions N.N. Shefov (USSR) 10cospheric Emissions L.M • .Fishkova (USS'R) Tropical Airglow P. V. Kulkorni (India) Airglow Effects of Photoelectrons H. c. Carlson (USA) Planetary Airglow C. A. Barth (USA)

'l i tle: Upper Atmospheres Cheinnan: T. r.:: . .Donahue Co-chairman : Y. N. Marov Lept. of Physics In~ ; t. foi· Applied liniv. of Pittsburgh hlat h . , Ac adem;y of Pittsburgh, PA. S c~., M.insska;ya 1 5213, u ~~ A 0y_uare 4, Moscow, us;_n Working, Groups

Composition, 'l'emporature u.nd. Den sity Variations VIII1 Rer orter: M. N. Izakov (USSR) Ionospheric and Thermospheric Dynamic s VIII2 Reporter: B.A. Tinsley (USA) Ionization. Processes VIII Reporter: H • .t:ather (USA) 3 Electromagnetic Interactions VIII4 Reporter: L. Block (Sweden) IV:cteors VIII Reporter: T.R. Kaiser (U~K~) 5 \~f . B. Planetary Atmospheres VIII6 Reporter: Eanson (USA) IAGA COMriSSI ON IX

~ · i tle: History Chairman: };.J. Cb.ernosky Co-chairman: N. V. Fushkov AFCl~L IZDf!IRA.N 48 Berkeley Street Vatutenki V.' altham, r!tA 02154 P/0 Adademe;or odok USA Moscow, USSR vV' orkipg Groups

P~erica~ Area IX1 Reporter: D. r; . Knapp (USA) Pacific Are a IX '"' Reporter: r~ . Ji'ukushima (J apcm) c.. CUEI·:'. IT'll:!;E ON LUN_t~R VAl~IJl -'1 IONS (Including the Nc~utral Atm.osphere)

Cho.irmon: 0. ~~ cllneider Co-chc:.irman: S.R. Malin Observatorio Astronomico Royal Greenwich Obs. l)[:JSeo del Basque Herstmonceaux Castle La Plata, Hai lsham, Sussex England

Vvorlcing Groups

Theoretical Problems of Atmospheric Oscillations WG1 Reporter: W. Kertz (W. Ger.)

Internal !~ spects of Geomagnetic and Aeronomical Lunar Varia.tions WG 2 Reporter: J. Larsen (USA) Solar ancl Interplanetary J~ffects in Luno.r Variations WG;; :; Reporter: H. Maeda. (Japan) I'rocedures for .fl...nalysis of Lunar Varia't ions WG 4 Reporter: B. Haurwitz (USA) B;ydromaenetic Aspects of Icnospneric Lunar Variations WG 5 Heporter: s. Matsushita (USA) Global Planning WG 6 Heporter: H. S. Malin (U.K.)

IAGA CC NJif~I TTEE ON ANTABC'l1 IC Rl!;SEARCII Chairman: T. Nagata (Japan) (ond the IUGG I~iaison Officer to ECAR) ~:: embers: V. A. Troitskaya (USSR) D. L. Carpenter (USA) ('Jotal membership will be enlarged to 15 or 20) Proposed Working Groups: l. Geomagnetic Variations and ULF 2. Radar and Optical Am· or as 3. VIJi' and Whistler 4. Ionosphere and CNA 5. Rockets G. Balloons It should be noted that several of the above named people have not yet been contacted. It is hoped that all will ac; ree N:INUT}!;S OF' EXECUTIVE COMMITTEE i·_Kb:'l1ING HELD IN MOSCQ1..V, USSR The first session was held on Saturday, 31 . '.!'hose present at this meeting were: President Nagata, Dr. V.A. Troitskaya, Dr. R. Turajlic, Dr. J.G. Roederer and Dr. Leroy R. Alldredge. Dr. E. Thellier and Rev. J.O. Cardus, S.l . arrived in time for the other sessions that were held through­ out the following two weeks. AJ.l of the results of the variouo sessions are reported together. Dr. Nicolet, Dr. Johnson and Mr. Casaverde had sent word to the General Secretary that they would be unable to attend the meetings. The last session was held on Thursday, 12 August. On this occasion both the old and new Executive Committee met together. 'l1he minutes for the Leningard E'xecutive Committee Meeting, held in , were approved. Agenda Items Submitted by National Delegations In response to a U.K. proposal to have lAGA publish a quadrennial international review of geomagnetism anu aeronomy so as to make it unnecessary for each national committee to write their o~m, it was decided that useful and meaningful Na~ional Reports would not be discouraged but that IAGA would encourage each Working Group rteporter and Commission Chairman to publish in the Transactions of each Scientific Assembly reviews of their various areas. In response to a proposal from the USA regnrdillG the use of a standard format for Assembly papers and the necessity of National Committee screening papers for submission, the LGx­ ecutive Comrnittee agreed thet althou~h many problems are recognized in Lhe enforcement of a standard format nevertheless one would be tried. Regarding scree nine:; of papers, it v. as decided that the IAGA Conveners and. Conuni:::>sion Chairmen would be relied upon as the official revie'I.'Jers of papers but that the National Committees may screen papers before submission if they choose to ao so. Appointm~nt of Ad Hoc Committees 'l'he following J·~ct Hoc Committees were appointeci to serve c.Lui·ing the Ivloscow Assembly: Resolutions Committee: A. J. Dessler, chairman R. Schlich Y. D. Kalinin J. o. Cnrdus Nominating Committee: T. Nagata, chairman A. J. Zmuda J. o. Ca:rdus N. P. Benkova A. DeVuyst Finance Committee: o. Schneider, chairman R. B. Leaton N. Fukushima Near the end of the Assembly these committees reported as given below. Report of Nomination Corami ttee: 1'he nominations committee report as quoted below was accepted by the Executive Committee: "The Nominations Cornmi ttee endorsed the following list for IAGA Officers President: v. A. '1'r oi tskaya

Vice Presidents: G. ['"/J • Weill J. G. Roederer General Secretary: L. R. Alldredge Members: l_[l . Nagata (past President) A. J. Dessler J. w. Dungey M. Nicolet o. Schneider R. 1·urajlic "The Committee also recognizes the growing importance of solid eart.i:l geomagnetism for every discipline. It recommends that future Nominating Cownittees take note of this growine importance und I)O f.isi bly increase the representa-tion oJ ·the sol :i.d

• I I . . . - "'.1 1he Committee also recognizes t1he need for u.n Adjoint Secretary and recommends the IAGA E,'x­ cutive Committee consider this office and an appointment to this office." President Nagata's suggestion that Dr. N. Fukushima be appointed to the position of Adjoint Secretar~ was accepted. It is expected that the Adjoint Secretary will attend all meetings of the ~xecutive Cowaittee and will generally learn all he can obout the operations of the Central Bureau. Report of the Resolutions Committee The resolutions committee reported that 38 resolutions had been submitted. Dr. A. J. vessler, chairman of the committee, pointed out that the business meeting of Cozmnission VII was scheduled after the final plenary session so that resolutions passed there could not possibly be properly ap­ proved. It was noted that in the future all business meetings shoula. be scheduled earl~ in the assembly period to avoid this problem. l 't ~vas also recommended that a firm deadline for receiving resolutions be maintained and that only resolutions written in both English and French be accepted from Commissions. Copies of all resolutions which were passed by the ~xecu­ tive Committee and finally also by the final plenary session will be published separately in IAGA News No. 10 and in the Transactions (IAGA Bulletin No. 31). Finances The Finance Committee submitted the following report which was accepted b;,y the Executive Committee: "The Finance Committee appointed by IAGA has carefully checked every item of the statement sub­ mitted by the General Secretary for the period January 1, 1967 to December 31, 1970, showing receipts amounting to $70,856.36 and expenditures of $43,886.03 with $26,970.33 available as oash in hand and in the banks, at the closing date of the period under report. "On the basis of this statement and the detailed additional information supplied by the General Secretary, which we deem satisfactory, we endorse the report and recommend that it be accepted. "We also propose to express the acknowledgement of IAGA to Dr. Alldredge and his institution for keeping the expenditures for personnel, supplies and equipment at a very low level; (actually, there were no expenditures at all for rent of quarters). It is also worth mentioning that expenditures for Symposia and Assemblies could be kept at a res sonable level thanks to the effort mad~ b~.,- the National Committees in providing funds to this end." A copy of the financial report from January 1, 1967 to December 31, 1970 discussed above will appear in the Report of the General Secretary in the Transactions of the Moscow Assembly (IAGA Bulletin No. 31). The budget for the years 1971-1975, calling for an allocation of $14,000/yr from IUGG, which vall also appear in the report of the General Secretary, was approved by the Executive Committee. It was agreed that the General Secretary should provide reasonable amounts of money to Commissions for postage, etc., VJi t hout referring the matter back to the Executive Committee. Publications It was agreed that IAGA should provide free of che.rge copie s of IAGA Bulletins to the World Data Centers if they request them.

It was decided th0 t each Symposium Convener should be encouraged to try to publish their symposium through regular Journal channels. IJ.'he General Secretliry was authorized to pay a few hund.red dollars to help such publications if needed. Note was made that the W~S final report was firdshed. !1. sample v.:as available t u view. : ;p(iw_; oJ': .hip o1· 1\ileetinp;~ It was agreed that IAGA would cosponsor the Equatorial I1eronomy Symposium being planned for Ibadan, !'t1.gera, in :jeptember '1 9?2. 'Jlllis sponsorship will be at no cost to the A::>.sociation except IAGA will send c. representc..tive which will be the Chairman of Commission IV or his representative.

It \vas aGreed th<.t the symposium on ''Geomagnetic Anomalie ~;; Hock Mo.gnetisrn and Petroe;raphy" which had earlier been re­ quested b;y Commission III would be a part of the Kyoto Assembly in '1973. C omm.i ssi on l II requested help in a:rranginG for a Spe­ ciu.lists, V•iorkshop - type meeting of about one week duration. 'rhe Executive Committee agreed to approach the Japanese authorities for facilities in Kyoto during the week before the IAGA General Scientific Assembly in 1973. Dr. T. Nagata will see that this is done. A proposal made by Drs. s. Ivlc.tsushita anci W.H. Campbell to hold a Special Symposium on "Worldw:i..de Magnetic Variations'' was referred to Commission TV for their sue;gestions. Second IAGA General Scientific AssemblJ!:

Presicient :Kag ata introduced Proi'. N. Fukushima who indicated tha·t the Japanese National Commit tee for Geodes:; and Geomagne­ tism has asked their Government through the Science Academy for official approval to invite IAGA to hold its ;:)econd Sci­ entific General Assembly in Kyoto from '10 September to 21 ~ eptereber '1973. He indicated that adequate facilities had already been reserved in Kyoto. ~~- he formal ap1)roval from Lhe Government should be received soon. Dr. Hoederer indicated that the proposal to hold a STP symposium in connection with the 0econd Scientific General Assembly has been withdro.wn. Comm~ssion Chairmen submitted a list of topics from their Commi ssions for presentation at this Assembly. 'l1his list as modified by the :txecutive Committee i s shown under Plans for the IAGA Second General Scientific Assembly in !AGA News No. '10.

"' , , Tnternal 1·:eorg-anizntion of IAGA

The J ~xecuti ve Comrni ttee invited CoDL~ission Chairmen to

m~e t with it to discuss cbanges in Corfl.missions <::.nd i n '.'!or!':i nc; Gr·oups. Commissions v;ere represented as follov.,rs: Commission I - A. DeVu)st II - H. B. Leaton III - F. J . Lowes acting for T . Rikitake IV - A. J. Zmuda acting for J. A. Jacobs V - J . G. Roederer VI - A. Ee.;ela.nd actinr; for A. Gmholt VII - G. L . Vieill VIII - A. J. Lcssler IX N. V. Pushkov X- Jt. Committee, Atmos • .t:lec ., J. L. Koenigsfeld XI - Jt. Commi L tee , Lunar Var., 0 . Sclmeider 'I'.his meeting '<'las very productive resultine; in the internal organization 2nd appointed officers shovm in the front of IAGA hews No. 10. 'l'his org<.;.nization is tentative since some of the appointed officers shown were not contacted at the Assembly·. Conunission Chairmen were encouraged to complete their working group memberships as soon us possible.

Relations vii th other Ore;anizations

The Executive Committee took note of an item from IUGG

Council f1·!eetine; to the effect that an International Mat~neto­ spheric Study (Iii:.S) report had been published by a joint working group of' IUCS'l'P anu COSPl"'".H without reference to perticipation by IAGA. IAGA was requested to discuss the project anu make its own recommendations. '.i:he Executive Commil.;tee appointed a committee consisting of V.A. 11'roitska;ya, A.J. Zmuda, G. IVJ . ·:,eill ana •r. Ne;•.gata to consici.er this problem. fl.'he corrurli ttee consideration resulted in Resolution No. 1 which -v;as subsequently passed by IUGG in a slightly modified form. The cbove comm.i ttee v:<...:s subsequentl;y retaineu to further consider the IIvlS problem. It was a6reed to drop the IAGA/IAMAP Joint Committees on Atmospheric Blecti'icity and Lunar Variations. Subsequent to this action IAN~ at;reed to it and incorporated the Atmospheric

1~.lec1;:r~ci ly o:r:~rmi.zation into the IANiAP International Commission st.ructu..l'c, 1-1Ilo Llll.' Lun.. n· Vl.:l.riation oru;unization was made a Drs. J.C. Cain (USA) and H. Kautzleben (Germany) were nominated as members of the Inter-union Committee on Mathematical Geophysics, which is replacing the old Upper Mantle Committee, on Use of Theory and Computers. (Both were confirmed b;y the IUGG Council). Dr. J. Veldkamp was nominated to be one of the IUGG representatives in FAGS. (Gubseguentl;y Dr. E. Anderson was given this appointment). lir. 'i'. Nagata was nominated t o be the IUGG re_presentati ve to SC.AR. (~'he IUGG Council later confirmed this appointment). Dr. G.M. Weill was nominated to serve on an Ad Hoc Com­ mittee of IUGG to determine the proper place of Geochemistry in IUGG.

Next I~i eetine; of Executive Committee It was agreed that the next meeting of the Executive Committee should be held just before the COSPAR meeting in Madrid, in llila;y of 1972. Dr . J.O. Cardus agreed to inquire of local authorities regarding facilities for such a meeting. RESOLUTIONS IAGA Resolution of Thanks

:_;_·he Interne.ti onal Association of' G~cmat.neti sm t- no Aeronomy cxp:r-esses its v;orme st thanks to t h(;; Organizir.l[; Corrl!J,i ttee of U te Soviet .1\cadewy of .:Jciences for t h e XV lUGG General Assembl y . In p&rticular it expresses t hanks to Aca

General ;::;ccret;-: r;y of the Ort~u.::i ~~inc Colli.illi ttee; Dr. A . D. Fowsne r,

GeEeral Secretory of t~l~c Geo_ph;ysical Committees ; .UI· . K~ Yu, Z;y bin, who wc.s res:ponsi ble f'or Ge omal;n eti sm c..nd Aeronomy ari·ant:;e­ ments , ar:ci to I~';rs . j11 • .A.. I:eloussova for raost inter·es'tinc; arrant;e­ ments J'or the Ladies.

l: 1 ftlGA exprime ses remerc.i.emeLts le s plus chaleureu.x au Comite c.'C.r t;: anisatiOIJ r~ G 1'.!-.Cc.ova pour le tres int~ressant pro6ramme pour les Dames. I A G A Resolutions Resolution No.I

NOTING The COSPAR and IUCSTP decision taken at their Seattle meetings in May I97I to support and approve the First Re­ port of the Itffi Special Study Group and to recommend that subsequent to the completion of its task with the issue of the Second Report,the present IN~ Special Study Group be dissolved and replaced by an appropriate body, the IAGA RECO!:i1.1ENDS that IUGG endorse the principle of the proposed IMS program and set up a working group in IUGG to consider particular­ ly the ground-based,rocket-borne and balloon-borne research programs which are closely related to the proposed ~ffi pro­ gram.. /Note. Tbis resolution was later passed by the IUGG as an official IUGG resolution in a slightly modi­ fied form/.

Prenant note de la decision prise par le COSPAR et l'IUCSTP a leur reunion de Seattle en mai I 97I d' encourager et d' app:~r·· ou~ ver le premier rapport du Groupe Special d'Etude de l'IMS et de recommander qu'apres l'achevement de sa mission,lors de !'edi­ tion du second rapport,l'actuel Groupe Special d'Etude de l 1 IMS soit dissous et remplace par un organisme approprie/ l'IAGA recommande a l'USSI d 'admettre le principe du prog­ ramme propose pour l'IMS et de constituer un groupe de tra­ vail dans l'UGGI en vue d'etudier, en particulier,les pro­ grwames de recherche au sol, par ballons et par fusees, qui sont ct~oi~ement lies au progrrurune propose pour l'IMS. Resolution No.2

IAGA confirms resolutions 6,7 and 12 adopted at its 1969 Assembly in Madrid and stresses the great scientific impor­ tance of the project Geomagnetic Meridian for simultaneous ground observations along the geomagnetic meridians of I05°• II50 and 140°-I50°E and covering latitudes extending from the auroral zone to the equator. This project is planned for the 1973-75 period. IAGA also recognizes the need for related satellite observations and strongly supports the launching of the geostationary satellite ATS-F, which will be positioned near-by geomagnetic meridian I00.5°E.

2. L' A I G A confirme les resolutions 6,7 et 12 adoptees lors de son Assembles de Madrid en 1969 et souligne le grand interet scientifique du projet Meridien Geomagnetique,dont le but est de fairs des observations simultanees au sol le long des meridiens geomagnetiques I05°-II5° et 140°-150° Est de la zone aurorale jusqu'a l'equateur; T,P. pro.iet est prevu pour la periode 1973-1975. L'AIGA reconnait ~ga1ement 1e besoin d'observa- tions complimentaires par satellite et elle encourage forte­ ment le lancement d'un satellite geo-stationnaire ATS-F qui serait situe pres du meridien geomagnetique I00.5°E.

Resolution No. 3

I A G A strongly supports the proposal of the IUCSTP to extend the multidisciplinary patrol observations of solar acti­ vity and related geophysical phenomena after the end of the IASY in I97I as a special extended multidisciplinary IUCSTP project for monitoring of Sun-Earth Environment (MONSEE) at least through the next solar c:~cle. IAGA recommends the ap­ propriate colillllis;;:>ions take an active part in working out MONSEE programs.

1 ') L'AIGA encourage fortemant la proposition de l'IUCSTP d'etendre les observations programme es multidisciplinaires d'activi t e sol ai re et de phenomenes geophysi ques apres la fin de 1' IASY en I 97I au moins jusqu'a la fin du prochain cycle solaire dans l e cadre d'un projet multidisciplinaire spe c ial de l'IUCS TP pour l a su r v eillance d e l' env ironneme n t soleilterre ( p r ojet MO NS EE ) . L ' AI GA recomma n d e au x commiss i ons concern€es d ~ prendre u ne part ac tive a la re a lisa t i on d e s pro grammes MONS EE.

Resolution No.4 The IAGA. As sembly accepts wi t b gra titude the pr oposal of IZMIRAN to organize and manage for I AGA an ru1alyt ical center on secular variation wit h the following funct ions: ( 1 ) Collection of data on secul ar variations from magnetic ob s ervatories and from repeat stations; ( 2 ) Publication of secular vari ation charts and t abl es of an­ nual val ues of magnetic el ements from magnet ic observa t or ies ; (3) Spherical harmonic analysis of s ecular vari ation. The St atute of t his cent er mus t b e drafted by I ZMmAN wi t b the hel p of tbe chair men of Commi ssionsr and II.

4. L' As semblee de 1 'AIGA accepiE avec r e c onnai ssanc~ la pro­ pos ition de l' IZMIRAN d'assurer, pour l 'AIGA, l'organisation et le f onc tionnement d'un centre analytique de la varia t i on seculaire qui aurait l es fonct i ons suivantes: 1/ r eunir l e s donnees de variation seculaire provenant des observatoires m a ~Zn et i o ues et des s t ations d e _ r epe.t ition , 2/ publ ier de s c artes de vari ati on secul aire et de s t abl es des valeurs annuelles des element s magnetiques des ob servatoircs, 3/ effectuer l 1 analyse spherique barmonique de l a varia­ , l . ·t. i on s ocu Q..l L'O Los st atut!:i

5· ~'J Considerant les grands progres accomplis ces dernieres annees dans le domaine de la de termination des marees lu­ naires par divers parametres, a partir de donnees de stations individuelles, l'AIGA recommande que les recherches future s , , , , , soient orienteas de preference vers des etudes r egionales et globales et vers 1' interpretaLion t heorique des phenomenes.

Re solution No.6

The IAGA, on the basis of r esolution N~. 8 adopt ed at Mad­ r id in 1969, and considerins that the Soviet insti tutions are ready to s tart geophysical observations (magnetic vru:·iations, VLF, ionospheric absorption, and vertical sounding) at several location s near Petropavlovsk and Topolovka, whi ch are conjugate to Canberra and Hobart,recommends tbat effective links be e s­ tablished between the Soviet Geophysical Committee and t he appro­ priate Australian institutions to bring this program into ope­ ration. '1 6.

~ L'AIGA, s'appuyant sur la resolution 8 adoptee a Madrid en I969 et consideran~ que l es inst:i.tutions sovietig_ues sont pretes a entreprendre des observations geophysiques (variations magnetiques, VLF, absorption. ionospheri que et sondages verti­ caux) en pl usieurs stations situees a proximite de Petropav­ lovsk et To_polovk.a, conjugu.es de Canberr a et Hob art, r ecom­ mande que des liens effectifs s oient etablis entre l e Comite Geophysique Sovietiqqe et les Institutions Au straliennes com- , peten tes pour mettre en reuvre ce programme. Hu:;olut.lon .No. 7

1111 :ut! through appropriate authorities of India i) for the pre­ servation of all the original ma.gnetograms by preparing a few microfilm copies and depositing them in Indian and Interna­ tional World Data Centers and ii) for appropriate scaling of the records of the period 1872-I924.

?· Considerant la grande valeur de la serie centenaire des magnetogrammes obtenus depuis 1872 aux observatoires de COLABA et ALIBAG (Bombay) pour la communaute scientifique interna­ tionale, 1' A I G A recommande au Gouvernemcnt de l'Inde d'as­ surer, a l'aide des autorites competentes , 1/ la conservation des magnetogrammes originaux par leur duplication sur des mic­ rofilms qui seraient deposes dans les Centres Mondiaux de Donnees Indicu et internationaux; 2/ l'execution de mesures appropriees sur les enregistrements de la periode I872-I924.

Resolution No.8 IAGA endorses the project Geophysical Test Ground in the Antarctic scheduled for 1975 which is intended to: (1) Determine the locations and minimal number of stations required for analysis of the temporal and spatial dis­ tributions of high-latitude geomagnetic variations; (2) Investigate the effect of geomagnetic variations on the state of the lower atmosphere; (3) Continue the work associating geomagnetic variations in the polar cap with various parameters of the solar wind and the structure of the interplanetary magnetic field.

?.0 L'l\. I G A auurouve le projet ''Geophysical Test Ground in , the .Antarctic" qui est prevu pour 1975 et dont les buts sont: 1/ la determination des lieux et du nombre minimum de stations requises pour l'analyse des distributions dans le temps et dans l'espace des variations magnetiques de haute latitude, 2/ la recherche de l'effet des variations magnetiques sur l'etat, de la basse atmosphere,' 3/ la poursuite du travail par lequel les variations magnetiques de la calotte polaire sont comparees a divers parametres du vent solaire et a la structure du champ magne­ tique interplanet&ire Resolution No.9 The IAGA, recognizing the importance of observations from the southern hemisphere, particularly in the vicinity of the equatorial electrojet, notes with satisfaction the observations made at Arequil:-i a and supplied to the World Data Centers,and recommends the continuation of this good work. 9· L'A I G A,reconnaiss ant l'importance des observations dans l'hemispbere Sud,et particuli er ement dans le voisinage , de l'electrojet equatorial,note avec satisfaction les ob- servations faites a AREQUIPA et transmises aux Cent res Mon­ diaux de Donnees,et recommande la poursuite de cet excellent travail. Resolution No .IO The I A G A considering the need f or recent data on a global scale, recommends the establishment of magnetic ob­ servatories in the regions where the present coverage is sparse especially in the southern hemisphere, and strongly urges that existing observatories make their results available through transmission to the World Data Centers L:tnd pr ompt pub­ lication of yearbooks. 10.

Ju LJu :Joi.n d•observations recentes' 1 l 1 111111 ,'11 lt 11 l I n llll/lllllt1.1U 1 .,!' UC~lJW!u.rlde la crea tion d observatoires 111 ' 1"''''d.1quo 11 d ''" ' _Lu u r~ t; ions ou leur densi t~ est faible (spe­ r I H ll!lllllll L dol.llll 1' bemisphere Sud) et insiste vivement pour

'1110 I 1111 ob:.Jc.CVl:.l Loires existants :r:endent leurs resul tats acces- :1 i IJ.l ow un l es transmettant aux Centres Mondiaux de Donneeseten publiu.nt immediatement leurs Annuaires.

Resolution No.II

I A G A notes "viii th satisfaction the implementations of the recommendation,made at the XIV General Assembly,that meteor drift studies be extended to the equatorial regions. SUch ob­ servations were made by the equatorial. expeditions of the Aca­ demy of Sciences of the USSR (I968-I970). IAGA supports the extension of' this technique for investigating the global. cir­ culation in the upper atmosphere.

II. L' I A G A note avec satisfaction la mise en oeuvre de . ' ' la recommandatlon, prise a la XIV-eme Assemblee, Generale,, , d'etendre aux regions equatoriales les etudes relatives aux , , , , , , vents meteoriques. De telles etudes ont ete effectuees au cours des expeditions equatoriales de l'Academie des Sciences ue l'URSS (I968-I970). L'AIGA encourage l'extension de cette technique pour l'etude de la circulation globale dans la haute atmosphere. Resolution No .I2

I A G A welcomes the developing regional cooperation in meteor wind and ionospheric drift studies, based on the work in the USSR,France and U.K. IAGA recommends that this co­ ordination be extended to other areas (USA,Australia ,New Zeal­ and, etc.) 12.

L' A I G A accueille favorablement la cooperation regionale . d' , , , q1ll. se eveloppe dans les etudes sur les vents meteoriques et les vents ionospheriques a l:t.ini tiative de 1 'URSS, de la France et de la Gramde-Bretagne. L'AIGA recommande que cette coope­ r&tion soit etendue a d'autres regions (U.S.A.,Australia, Nou­ velle Zelande,etc.)

Resolution No.I3

Reflecting the current needs of the scientific community, IAGA recommends that the following changes be made as soon practicable in the contents of the Bulletin No.I2 series: 1) To include,in addition to the planetary indices ~ and its derivatives, the indices Dst, AE, Km, Kn' and Ks. 2) To include data on magnetic storms, including reproductions of magnetogram.s for the H-comJ;onent, reduced to the same time scale and comparable intensity scales, from I2 to I6 observa­ tories for approximately ten storms each year. 3) To discontinue the publication of K-indices from individual observatories in the Bulletin; instead these K-indices be stored in magnetic tape wherever pnacticable in the World Data Centers.

I3• Selon les besoins actuels de la Communaute scientifique, 1' AlGA recommande que les changeoonts suivants soient faits, aussitot que possible,dans le contenu des Bulletins de la serie No.I2: I) introduire, en supplement aux indices planetaires KP et a leurs derives, les indices Dst, AE, ~' Kn et K8 • 2) publier,pour environ IO orages magnetiques par an, des donnees comprenant en particulier la reproduction de magneto­ grammes de la composante horizontale provenant de I2 a I6 obser­ vatoires, ces magnetograr:.:mes etant reduits a la meme echelle de temps et a' des valeurs d'echelle comparables. 3) cesser la publication de~ indicc8 K provonun'L lio n ob~ : <- J rvn­ ti.ons, COU:X-Ci o·l;o.nt pur contra o·Loclto. · OU!' ·bund<: lllUf~IHJ LlhqUo dt.mn lu:1 C(JJltros Mon

I A G A recommends that every possible effort be made 1 to obtain archeomagnetic samples from the areas of Australia, Middle Bast, and Africa by well qualified workers,

I4. L' A I G A recommande que tous les efforts soient faits pour que des chercheurs qualifies prelevent des echantillons archeomagnetiques en provenance d'Australia, du M~yen Orient et d'Afrique. Resolution No.I5

I A G .A _§~esses the importance of the study of conduc­ tive layers in the intermediate depth range 20 to roo km, es­ pecially in view of the relevence of such studies to partial Jilelting in the upper mantle. 15.

L'A I G A souligne l'import~ce de l'etude des couches conductrices dans le domaine de profondeurs 20-100 km, sur­ tout a cause de l'interet qu'elle presente pour le probleme des fusions partielles dans le manteau superieur

Resolution No. I6 I A G A supports the collaboration of scientiGtli making magnetotelluric and geomagnetic deep soundings along an ex­ tended east-west profile in Eurasia,the stations of which should be located with due regard to tectonic features.

I6. ~' A I G A encourage la collaboration de scientifiques faisant des sondages magnetotelluriques et geomagn~tiques pro­ fonds le long d'un grand profil Est-Ouest en Eurasie, la lo­ calisation devant etre choisie en fonction des lignes struc­ turales.

' lo Resolution No.I7

I A G A recommends urgently that member countries sup­ port collaborative paleomagnetic and radiometric dating re­ search for the purposes of: I) determining the reversal time scale more accurately using rocks from all countries 2) obtaining more information about the fine structure of polarity events and polarity transitions. 17.

L' A I G A recommande instamment que les pays membres encouragent des recherches cooperatives de paleomagnetisme • et de datation radiometrique en vue de :

1) determiner avec plus de precision,en utilisant des rockes de tous pays, l' echelle du temps des inversions.

2) obtenir des informat ions plus nombreuses sur la struc­ ture fine des evenements et des changements de polarite.

Resolution No.I8

I A G A asks the stations: Resolute Bay, Thule and Vostok to provide the data on diurnal Z variations to ISMIRAN (USSR Academy of Sciences) for experimentally determining an in­ dex characterizing the interplanetary field sector structure.

18. L' A I G A demande aux stations de Resolute Bay, Thule et Vostok de fournir les donnees de variation journaliere de la composante Z a l'IZMIRAN (Aca demia des 0ci£nces de l'URSS) dans le but de determiner, a titre experimental, un indice ca­ racterisant la structure sectorielle de champ interplanetaire.

Resolution No.I9 IAGA supports t h e r·esolution o:f XIV Plenary :&le e ting of COS_!?AR in which it w;.... s recoraru.enc;rnm:.:; l uc Judo ~ ; im u l ­

L i trt t~ou :..; !JOJil(JO:J tl.ton t ll t J.' I !iUl ' c,; JtJtJr tt; ~ wi.Lh 11l l ;tv;ti ] ltlll,, Lo (~ lttti • J II« u 1'1

A ' 'lll''''" l11 r·t~nt>J.u Lion de la XIV-eme reunion ple- 1' t\ 11 ' Ill I , ... ,wuuwu1do.i t aux organismes assurant des "'"''' • ·l'"'~ •· .l quu:J d'inclure dans les programmes coor­ lllli(,tH I t Oatelli teS et SOndeurS a diffusion incohe- 11tlld, o. tltuJ muuures simultanees de composit;ion de l' atmosphere, "'' '"''Pl.vyunt toutes les techniques disponsibles, en vue de com- , , . p tu: ur les etalonnages pour obtenir de donnees homogenes.

Hesolution 20 I A G A recommenas coordinated measurements of the tempe­ rature, composition, anu density of the thermosphere with dif­ f erent methods for imnrovement of the knowledge of the diurnal v ariations of structural parameters and of their dependencies on latitude. 20. L' A I G A recommande que soient faites, par des methodes differentes, des mesures de la temperature de la composition et de la densite de la thermosphere afin d'ameliorer la connaissance des variations journalieres et de la distribution en latitude des parametres' structuraux. Resolution No. 21. The I A G A recognizing the shortage and poor distribution of present ground level data for evaluating geomagnetic secular change, urges all countries· to measure the vector field at their repeat stations at least once in IO years, more frequently in regions with special features (r.g. secular variation foci, tec­ tonically anomalous areas, etc.) and , where appropriate, to set up repeat stations on the islands of the South Pacific and Atlan­ t ic Oceans and to report results promptly to World Data Centers or organizations that prepare world charts.

26 21. L' A I G A, considerant l'insuffisance des donnees au sol dont on dispose actuellement pour estimer la variation seculaire du champ magnetique terrestre,recommande instamment a' tous les pays de mesurer le vecteur Ju champ dans leurs stations de repetition au mains une fois tous les IO ans et plus freque­ mment dans les regions presentant des caracteres particuliers (par ex.foyers de variation seculaire,aeres des anomalies tecto­ niques, etc.), d'etablir,quand c'est possible,des stations de repetition da~s les iles du Pacifique et de l'Atlantique Sud et d'onvoyer rapidemen-tJ les resultats aux Centres Mondiaux ou aux autres organ1smes. qUl. preparent' les cartes mondiales. Resolution No.22

The IAGA recognizes that, even though the \'iorld Ma, ~netic Survey is concluded, surface survey data are still needed in some areas and urges all countries to make suitable observa­ tions. 22. L' A I G A c onsidere que, bien que le Re seau Magnetique Mondial soit acheve, des determinations dG donnees de surface sont encore indispensables dans certaines regions et demands instamment a tous les pays de proceder aux mesures necessaires. Resolution No.23 The IAGA recognizes the vital contribution of vector sur­ veys over marine areas to our knowledge of the geomagnetic field and urges their continuation.

23. L' A I G A reconnait la contribution capitale des campagnes de mesures vectorielles en mer a la connaissance du champ mag­ netique terrestre et recommande instamment de les continuer.

Resolution No.24 The I A G A recoGnizes the valuable contribution made by near-earth so.telli tes to -the cetermination of the geomagn etic ~"; ecular chc.u1go un.d ruculJuncnds u resurvey by low-lovul .st;oll. i t oEJ 'w I, l;Jtur Lh.f.Hl J 'J'; ,, . 24.

I,' II .I L:· f\. prcnd o.c te de 1' importan te con tri bution des sa­ L! : I I i Llli i clu uusse altitude a la determination de la variation ::c~ cu.lajJ:u ct reco"um.ande le renouvellement d'un tel leve pour 1 9'/C uu plus tard. Resolution No. 25 The IAGA recommends (1) that the present International Geo­ macnetic Reference Field (IGRF) be retained until at least 1973·5 (2) that future evaluu ~ions should emphasize improving secular change coefficients, ( 3 ) that comparisons be~veen ob­ served and computed values should always include an assessment of' the IGRF and (4) that results using other reference fields should also be compared vii th IGRF. 25. L' A I G A recommende 1/ que le present "Champ Geomag:o.e- tique International de Reference" (I G R F) soit retenu au moins jusqu'a 1973·5; 2/ que,dans les prochaines determina­ tions, l'accent soit mis sur l'amelioration descoefficients de va­ riation seculaire; 3/ que les publications concernant des va­ leurs observees et calculees contiennent une comparaison avec l'IGRF; 4/ que des telles compara{sons soient faites meme lorsque d'autres champs de reference sont utilises. Resolution No.26 The IAG.A recommends that a s a c ontribution to the World Magnetic Archive, numerical magnetic-observatory data, past and current, be put into machine-readable form whenever practicable for transmittal to a WDDC and that pre-IGY magnetograms and hourly-value tables be microfilmed for transmittal to a vmc.

26. L' A I G A recommande que,dans le cadre des Archives Mag- netlques'· Mondla"1 es, 1 es d,onnees numerlques'· passees, e t,presen t es des observatoires magnetiques soient mises dans toute la mesure du possible sous une forme lisible par un ordinateur et trans­ mises a un Centre Mondial de Donnees Numeriques et que les mag­ netogrammes anterieurs a 1' A.G.I. ainsi que les tableaux de va­ leurs horaires soient microfilmes et transmis a un Centre Mondial , de Donnee s . SEI_ECTED I TEf·IS OF I NTE~~~T INTER-UNION COMMISSION ON GEODYNAMICS

The following excerpts were taken from Report No. 1, of the Inter-Union Commission on Geodynamics (IGC) It reports the Bureau Meeting held at Leiden, .

''The Bureau of the ICG met at the Geological Institute of the State University of Leiden from 13th to 16th March at the invitation of Prof. Dr. E. den Tex.

"The following Bureau members attended: C.L. Drake, presi­ dent, D.H. Green, X. LePichon, secretary general, V . A. Magnitsky and E. den Tex.

"After a brief welcome by the President, Prof. V . A. Magnitsky stressed the desire of the USSR ICG Committee that the Geodynamics Project avoids the application of any one particular hypothesis in its study of the deep-seated pro c esses of geological phenomena.

"Taking into consideration the scope, aim and duties of the Inter- Union Commission on Geodynamics and likewise the proposals submitted by National Committees and international bodies, ten Working Groups are proposed to be responsible for activi t y in the fields of study outlined below. These groups are :

"1 Geodynamics of the 1/Jestern Pacific region 2 Geodynamics of the Eastern Paclfic reg ion 3 Geodynamics of the Alpine-Himalayan region 4 Geodynamics of continental and oceanic rifts 5 Physical propertie s of t he earth's interior 6 Processes in the earth's interior and their relation to present surface te c tonics and observed physical fields 7 Ep eirogenic movements of r e g ional extent 8 Connections be tween oceanic a nd continental structures 9 History and interactions of tectonic, metamor phic and magmatic processes 10 Global syntheses of evidence leading to the reconstruc­ tion of the distribution of continents and oceans through time .

" The Report No . 1 further amplified the responsibilities of each Working Group in some detail. Th e membership of the Working Groups was not specified, but it was cited that disciplinary and geographical distribution should be considere d in organi z ing these groups . l , llll lll'l AIJ l, t) H'III /\1 111 l'l ,r\r ll'~ 'l't\ln' l'IIY:;JCS COLLOQUIUM

I' J,,. 1 11 ·1 1 '·'''"Ill'·"' 1·: . 11 1 II ;1nd Planetary Physics Colloquium W i l li !11· I d .II ll•·o~d lilf',, i-.11)',1 ;llld, 30 March - 2 . The I ttl l11wln)', l111JIIlll.llll r.<·:-;olutions were adopted at an Open Meeting 011 /\pill.

1. An Association of European Geophysicists should be established with individual membership making small annual subscriptions to meet the cost of producing and distributing an information sheet on future colloquia.

2. The main activity of the Association shall be to promote the continuation of the European Earth and Planetary Physics Colloquia on an annual basis.

3. The practical implementation of the above resolutions shall initially be the responsibility of an Executive Committee, the members of which will be determined after consultations with representatives in the concerned countries of Europe.

4. That a correspondent in each country should be appointed to advise the Executive Committee and assist in disseminating information about the Associa­ tion and the annual Colloquia.

5. That the Executive Committee should develop a cooperative relationship with European societies and organizations with interests in Earth and planetary sciences.

6. That the Executive Committee explore the offers of assistance by the American Geophysical Union (AGU) and the International Union of Radio Science ( UR SI) in the development o f the European Colloquia.

The spirit of these resolutions was initially conside red at a meeting of representatives of most of the countries represented at the Colloquium at Reading. This included 34 scientists from 15 countries. WORLD DIGITAL DATA CENTER

Dr. B. N. Bhargava, director of the Colaba Obs­ ervatory, indicated in a letter of Janu ary 30, 1971 that the Governement of India has accepted the p ro posal to start a Digital Data Center for Geomagnetism at Bombay and funds and staff should become available very soon for the function­ ing of the Center. The Center will make use of the CDC 3600/ 160-A Computer installation of the Tata Institute of Funda­ mental Research.

The establishment of several World Digi tal Data Centers t o r e c e i v e , c a t a 1 o g and a r c h i v e m a g n e t i c d a t a in m; 1 c h in e - readable form and to disseminate these in standard format was recommended in IAGA Resolution No. 8 at the XIV Genera l Assembly of the IUGG. The location of the third of these Centers in India has resulted from discussions which Dr. Joseph C. Cain, chairman of the Ad-hoc Committee for Digital Data Interchange, had during his visit to India in .

The following official note was provided by Dr. Bhar g ava.

"The third Digital Data Center for Geomagnetism has started functioning at Bombay, India. It has in its collection 2 . 5 min. and hourly magnetic data on 90 magnetic tapes supplied to it by Dr. Joseph Cain, chairman of the Ad-hoc Committee for Digital Data Interchange.

"The Center will receive, file and catalogue machine - readable data and will supply these to Scientific Institutions in standard format. The Ce nter is also placing on cards hourly values of magnetic elements from the old and established station, Colaba­ Alibag. Correspondence for the Digital Data Center should be addressed to Th e Director, Colaba and Alibag Observatories, Colaba, Bombay-5, India."

ELECTROMAGN ETIC AND RYDROMAGNETIC ASPECTS OF LUNAR VARIATIONS OF THE JOINT IAGA-IAMAP LUNAR COMMITTEE

Dr. S. Matsushita was asked by Dr. 0 . Schneider, chairman of the Joint IAGA-IAMAP L unar Effects Committee, to act as convenor.of an ad hoc study group on "Electromagnetic a nd Hy d ro ­ magnetic Aspects of Lunar Variations." In this capacity Dr. Matsushita wrote to many scientists interested in this subject expl~ining that the goals of th e ad hoc study group were as follows:

11 T he s t u d y g r o u p c an b e in s t r u me n t a 1 i n : s t i rn u 1 ~1 L i. n ~·. new r e s e a r c h ; p o in t i n g o u t g a p s in t he ex i s t i n g L h v o 1· I t ' : • and o b s e r v a t i o n a 1 s c he me s ; a s s i s t in g in d i v i. d u n I i 11 v 1 • : 1 1 I - gators and the Lunar Committee at larp,l' ; ;1n d do I I I)', t P J, to,I J ,.It \.Jork on their own account. 11 II. t "l ' II 1\ t'' rl I ', I I I ,, ,. ' "' ' " Will)'. : ;cl~ntists had , , j • I' I ' ,I '"I ""' ' I It I I ' I I I I It I tl / I ' I I' "' ,. ,,,,,mil. l:el! :

It) II I II I ' 1 111 (' I·,. I I P r of. P . C. Kendall

r 1' , , 1 ,, , 11 , ' I I ' It I. ' I I' I' I ' I I II J t l' :; Department of Applied

I I " II I " ' I • c·, I " 1 .1ol 11 II()\():.~ USL\ Mathematics Un iversity of Sheffie ld l'1 p l. L. l.' .ttt •:t· l ;tu Sheffield , England ~ ~ · 111t.rl ln . 1 Lltut Physik der Erde t:I>R/I>DI\. - 15 Potsdam Dr . R. C . Rastogi 'I'L' I egr.:1fe nberg A 43 Physics Res earch Laborato r y Navrangpura Prof. C. 0. Hines Ahmedabad - 9, Ind i a Depar tment of Physics University of Toronto Dr . J. D. Tarpley Toronto 5, Ontario, Canada NOAA, Resear ch taborato r i es Boulder, Colorado 80302 USA Prof. S. Kato Ionosphere Research Labo r ato r y Kyo to Un iversity Kyoto, Japan

The convenor still awaits rep l i es from Dr. N. P . Benkova (USSR) and Prof. K. Rawer ( Ger many) .

The convenor plans to compile and dist r ibute brief reports of recent wo r k of committee memberE and suggestions f or future projects.

THE SUMMARY OF THE ANNUAL MEAN VALUES OF MAGNETIC ELEMENTS AT THE WORL · MAGNETIC OBSER VA TORIES

Dr. V. P. Orlov and P. Ivchenko J 1te in 1 970 p ub lished a compilation nf the Arnu u L Mean Values of Ma gne t i c Elements at the World Magnetic Obse~vatories.

This publication was issued b · th Academy of Sciences of the USSR Ins titute of' rrestrial agnE:tism, I onosphe r e and Radio Wave Propagation (IZMIKAN ), Issue Number V, from Moscow, 1970. This is a co ntinuation of the previou s issues I-1965 , I I - 1967, III-1968 a nd IV-1969 compiled by t he 3me authors and published in Mo scow , IZMIRAN .

The author J ind ic~te that unfortuuately the Summa r y i s not complete as the y have not receiv e d 1 he Jalues of geomagnetic elements from magnetic observatories of some countries. On the who l e t he Sumt ~ry includes the annual means at 76 magnetic obser­ vatories, havi g been re ceived by 1 J u ly , 1970 . Espe cially embarassing is a gap in information at the South Africa o bser­ vatories.

For the mo st part of t:he t.')servatories the data for 1968 and 1 9 6 9 are t h , 1 ., t e . : b u t f o r ~ o •·1 e o f the o b s e r v a t o r i e s on 1 y earlie r dat r... w. : · avai · a'l,le. The authors hope to compile the next (issue VI) of t he Summary by the year 1971. The Summary will include the 1nnual means for 1969 and 1970 and the earlier one, if missing o r g iven erroneous in the previous issues . Therefore, t he .tuthors request that the data be sent as soon as po ssib le (advisable D, I, H, 2, X, Y, T) to Dr. V . P. Orlov, ISMIRAN, ~1oscow, USSR.

INTERN ATIONAL SYSTEM OF UNITS (SI)

At the IAGA General Scientific Assembly in Madrid, a recom­ mendation by the British National Committee on the adoption of SI units for geomagnetic work met with general approval, but it was considered that the matter was too complex for i mmediat e decision and it was recommended that a joint Commission I and II Ad Hoc Committee be established to consider the introduction of the SI units, and r e port in time for a decision to be taken at the 1971 IAGA meeting.

In May 1971, Dr. F . Primdahl, of the Danish Meteorological Institute, distributed to the IAGA Ad Hoc Working Group on I nternational Units, a publication on Internationa l System of Un its (51-Units) entitled "Recommendation of Preferred SI-Units in Geophysics''. It was published by the Danish Meteorological Institute Geophysical Papers R-24, of Charlottenlund, Denmark . Copies can probably be obtained from this location. The abstract of the paper is given below:

"A set of Preferred SI units in geophysics is recommended for adoption by IAGA. The units are chosen among the existing MKSA-units, and they have integ ral power-of-ten conversion factors to the Absolute Electro­ magnetic System (e.m.u . ).

" T he e.m.u. 's currently used in geophysics thus become legal subunits of the Preferred SI.

"The use of Preferred til 1s demonstrated in the treatment of magnetic materials and a philosophy slightly different from that of the Giorgi - systems is recommended .

"Related to geophysics a list of general equations independent of unit systems is given together with indi­ cations on how to convert them to Preferred SI o r to any other unit system." FUTURE SYr··1POS I 8

PHYSICS OF THE EARTH: THE CORE-MANTLE INTERFACE

An international conference on the ''Physics of the earth: the core-mantle interface," is to be held at the Florida In­ stitute of Technology, March 7-9, 1972. The organizing com­ mittee includesJ.C. Cain (secretary), R.K.C. Johns, host of the meeting, Allen Cox, A.J. Zmuda, R. Phinney, R. Hide and L. R. Alldredge. It is hoped to be cosponsored and supported by IAGA, IUGG, IASPEI and the new Geodynamics Project.

The intent of the conference is to bring together various workers in areas that are sometimes isolated due to their dif­ fering techniques of study. Although there will be a practical limit on the total number of attendees, it is emphasized that those who have had a long standing interest in these problems are not excluded but that the participation of the most active scientists including advanced graduate students are urged to attend.

FOURTH TRIENNIAL BOULDER GEOMAGNETISM CONFERENCE

The Fourth Triennial Boulder Geomagnetism Conference is to be held in . It is proposed that this conference be titled "The Chapman Memorial Symposium on Magnetospheric Motions". The NCAR staff are especially interested in using this means of recognition of their favorite researcher.

The arranging Institutions are the NOAA Environmental Research Laboratories (ERL) and the National Center for Atmo­ spheric Research (NCAR). The Technical Program Committee members are W. H. Campbell, ERL and S. Matsushita, NCAR. Deadline for submission of abstracts is April 15, 1973.

FIFTH INTERNATIONAL CONFERENCE ON ATMOSPHERIC ELECTRICITY

The Fifth International Conference on Atmospheric Electricity will take place at Garmisch-Partenkirchen, South Bavaria, , either in Se?tember 1973 or in Septemb e r 1974.

All those who have an interest in the subject of the Conference should make known their ideas and desires and send their comments to the Conference Office, not later than .

A maximum of nine sessions may be held; based upon the biggest gaps in our knowledge the fol l owing topics and definitions are proposed:

Session 1: Thunderstorm, Shower - Critical assessement of the approaches to solve the electrification problems in clouds, showe rs and thunderstorms. Lightning Initiation of lightning.

~;ll ssion 3: Ions Physical chemistry of the ion regime in the atmosphere (fast and slow ions).

Session 4: Atmosphere-space coupling Electric coupling between troposphere, stratosphere, ionosphere and magnetosphere. This includes solar and lunar influences.

Session 5: Other atmospheres Atmospheric electricity on other celestial bodies. Existance, detection and possible significance of atmospheric-electrical generation and global circuits on Jupiter, and Venus. Electric fields on, and currents to and from such celestial bodies as Moon, Mercurius.

Session 6: Global circuit Determination of the most urgent problems and conclusions on the most promising approaches in global circuit investi­ gation.

Session 7 Meteorolozy Application of atmospheric elect- and 8: ricity. Methods and concepts to the practical purposes of meteorology, and to the promotion of knowledge in general atmospheric physics.

Part A (Session 7) Assessement of meteorological influences on the electrical resistance regime of the atmosphere (physical aerosol composition and distribution, including problems of air pollution)

Part B (Session 8) Assessement of meteorological situations in which electricity is generated (fore­ casting of such situations which generally are connected with severe weather; weather modification).

Session 9: Instrumentation Here we do not now intend to suggest a general discussion on measuring methods; rather we suggest to restrict this session to one urgent subject the specific nature of which will be determined about one year prior to the conference. l'l.i\Nr; !•'(1!1' 'I'Jir: lfll~i\ :;I•:C( 1}JD GENERAL SCIENTIFIC

. A~::; I•:M HLY I KYOTO. J AP.AN 1973

llu•· i, ll/ ', Llw XV General Assembly, in Moscow, the Commissions

ftr11l I•:M, (: ll LJ v c Committee ar;reed that the :following topics should 111 · d( ·v1·loped as Symposia. and Scientific Sessions in Kyoto, ~1 upan in 197.3: (In some places non IAGA organizations that may wish to join with IAGA are shown in parenthesis.)

Commission I 1. Modern Magnetic Observatory Techniques 2. Magnetic Measurements and Anomal.ies at Sea (Symposium with Commissions II and III ) Commission II

1. Low-level satellite Survey 2. Secular Variation with Particular neference to IGRF (Symposium VIi th Commissions III, IV and V). Commission III 1. Geomagnetic Anomalies, Rock Magnetism and Petrography.

2. r~lagnetic Polarity IJ:'ransi tions 14 3. Paleomagnetic Intensity Variations and the c Balance (IAV C~ l) 4. The Lunar Magnetic J.i'ield: present steady field, ancient field and theoretical models. ~'· Electromagnetic Induction Studies of Tectonic Regions: deep conductive structures and physical processes in the Eart;h.

6 . ~ lectrical Conductivity of the Earth E~d Moon: Laboratory and Field Studies Commission IV l. J\!icropulsations: 'l'heory and new Experimental results 2. Prediction of' 0ubstorms

.3. Review p apers on Conjugate :!?oint P henomena 4. Worldwide Distribution of Geomagnetic Disturbances 5. Physical Interpretation of Geophysical Indices Commission V

1. Dynamical and 'J'hermal Processes 1n Ionosphere and ':thermosphere (of r.!a:!.n int-?rest Lo VI, VII a:nu. \I III) (UJ?ST) "1. Solar Wind at Great Distances and High Ecliptic Latitudes '~. STP (extent now known) (IUCSTP) Commissions VI and VII 1. Aurora and Airglow Commission VIII 1. Major STP Interest (principally on Mars)(IUCSTP) Commission IX 1. History of Geomagnetism in the Pacific Area 'rhe exact t i me of' the Assembly will be announced later, but ~t nas oeen tentatively scheduled to be held from 10 Sept. to 21 Sept. 1973. Commission Chairmen are urged to begin planning for this Assembly by arranging f'or conveners for the topics list;ed above as well as other topics of importanc~ to the Commission. Commission Chairmen and reporters are reminded that one of their main responsibilit ies f or each assembly i s to prepare reports reviewing the procress in their fields of responsibility. These reports should be given before t heir Commission and made available for publicati on i n the transactions. If thene are done well it should reduce the need for National Reports. A little l ater, tn.e General Secretary will distribute copies of a stc.illdard format which should be used in submitting abstracts for this assembly.

PUBLICATIO~~S .. -.. ~ -- WMA INVENTORY

The first issue of the WMA Inventory has b een comp i led hy Professor Masaziro Ota. It appears as a publication of the WDC C2 for Geomagnetism , University Library, Kyoto University , .Iapan . The second issue has a dditional lists of da t a a nd some :trn e ndments for the materials in the first issu e from th e res­ p l!C tive countries as described in IAGA Ne\vS No .9, page 47 . St· icntists who utili ze the WMA Inventory are requested to have tltc t wo publications. The p u b lication inc lude s additional lu(ormation fr om six countries .

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