Antarctic Specially Protected Area No. 143 Marine Plain, Mule Peninsula, Vestfold Hills, Princess Elizabeth Land
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Postspreading Rifting in the Adare Basin, Antarctica: Regional Tectonic Consequences
Article Volume 11, Number 8 4 August 2010 Q08005, doi:10.1029/2010GC003105 ISSN: 1525‐2027 Postspreading rifting in the Adare Basin, Antarctica: Regional tectonic consequences R. Granot Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA Now at Institut de Physique du Globe de Paris, 4 Place Jussieu, F‐75005 Paris, France ([email protected]) S. C. Cande Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA J. M. Stock Seismological Laboratory, California Institute of Technology, 1200 East California Boulevard, 252‐21, Pasadena, California 91125, USA F. J. Davey Institute of Geological and Nuclear Sciences, PO Box 30368, Lower Hutt, New Zealand R. W. Clayton Seismological Laboratory, California Institute of Technology, 1200 East California Boulevard, 252‐21, Pasadena, California 91125, USA [1] Extension during the middle Cenozoic (43–26 Ma) in the north end of the West Antarctic rift system (WARS) is well constrained by seafloor magnetic anomalies formed at the extinct Adare spreading axis. Kinematic solutions for this time interval suggest a southward decrease in relative motion between East and West Antarctica. Here we present multichannel seismic reflection and seafloor mapping data acquired within and near the Adare Basin on a recent geophysical cruise. We have traced the ANTOSTRAT seismic stratigraphic framework from the northwest Ross Sea into the Adare Basin, verified and tied to DSDP drill sites 273 and 274. Our results reveal three distinct periods of tectonic activity. An early localized deforma- tional event took place close to the cessation of seafloor spreading in the Adare Basin (∼24 Ma). -
The Permo-Carboniferous Oslo Rift Through Six Stages and 65 Million Years
52 by Bjørn T. Larsen1, Snorre Olaussen2, Bjørn Sundvoll3, and Michel Heeremans4 The Permo-Carboniferous Oslo Rift through six stages and 65 million years 1 Det Norske Oljeselskp ASA, Norway. E-mail: [email protected] 2 Eni Norge AS. E-mail: [email protected] 3 NHM, UiO. E-mail: [email protected] 4 Inst. for Geofag, UiO. E-mail: [email protected] The Oslo Rift is the northernmost part of the Rotliegen- des basin system in Europe. The rift was formed by lithospheric stretching north of the Tornquist fault sys- tem and is related tectonically and in time to the last phase of the Variscan orogeny. The main graben form- ing period in the Oslo Region began in Late Carbonif- erous, culminating some 20–30 Ma later with extensive volcanism and rifting, and later with uplift and emplacement of major batholiths. It ended with a final termination of intrusions in the Early Triassic, some 65 Ma after the tectonic and magmatic onset. We divide the geological development of the rift into six stages. Sediments, even with marine incursions occur exclusively during the forerunner to rifting. The mag- matic products in the Oslo Rift vary in composition and are unevenly distributed through the six stages along the length of the structure. Introduction The Oslo Palaeorift (Figure 1) contributed to the onset of a pro- longed period of extensional faulting and volcanism in NW Europe, which lasted throughout the Late Palaeozoic and the Mesozoic eras. Widespread rifting and magmatism developed north of the foreland of the Variscan Orogen during the latest Carboniferous and contin- ued in some of the areas, like the Oslo Rift, all through the Permian period. -
Ice Shelf Advance and Retreat Rates Along the Coast of Queen Maud Land, Antarctica K
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 106, NO. C4, PAGES 7097–7106, APRIL 15, 2001 Ice shelf advance and retreat rates along the coast of Queen Maud Land, Antarctica K. T. Kim,1 K. C. Jezek,2 and H. G. Sohn3 Byrd Polar Research Center, The Ohio State University, Columbus, Ohio Abstract. We mapped ice shelf margins along the Queen Maud Land coast, Antarctica, in a study of ice shelf margin variability over time. Our objective was to determine the behavior of ice shelves at similar latitudes but different longitudes relative to ice shelves that are dramatically retreating along the Antarctic Peninsula, possibly in response to changing global climate. We measured coastline positions from 1963 satellite reconnaissance photography and 1997 RADARSAT synthetic aperture radar image data for comparison with coastlines inferred by other researchers who used Landsat data from the mid-1970s. We show that these ice shelves lost ϳ6.8% of their total area between 1963 and 1997. Most of the areal reduction occurred between 1963 and the mid-1970s. Since then, ice margin positions have stabilized or even readvanced. We conclude that these ice shelves are in a near-equilibrium state with the coastal environment. 1. Introduction summer 0Њ isotherm [Tolstikov, 1966, p. 76; King and Turner, 1997, p. 141]. Following Mercer’s hypothesis, we might expect Ice shelves are vast slabs of glacier ice floating on the coastal these ice shelves to be relatively stable at the present time. ocean surrounding Antarctica. They are a continuation of the Following the approach of other investigators [Rott et al., ice sheet and form, in part, as glacier ice flowing from the 1996; Ferrigno et al., 1998; Skvarca et al., 1999], we compare the interior ice sheet spreads across the ocean surface and away position of ice shelf margins and grounding lines derived from from the coast. -
Antarctic Peninsula
Hucke-Gaete, R, Torres, D. & Vallejos, V. 1997c. Entanglement of Antarctic fur seals, Arctocephalus gazella, by marine debris at Cape Shirreff and San Telmo Islets, Livingston Island, Antarctica: 1998-1997. Serie Científica Instituto Antártico Chileno 47: 123-135. Hucke-Gaete, R., Osman, L.P., Moreno, C.A. & Torres, D. 2004. Examining natural population growth from near extinction: the case of the Antarctic fur seal at the South Shetlands, Antarctica. Polar Biology 27 (5): 304–311 Huckstadt, L., Costa, D. P., McDonald, B. I., Tremblay, Y., Crocker, D. E., Goebel, M. E. & Fedak, M. E. 2006. Habitat Selection and Foraging Behavior of Southern Elephant Seals in the Western Antarctic Peninsula. American Geophysical Union, Fall Meeting 2006, abstract #OS33A-1684. INACH (Instituto Antártico Chileno) 2010. Chilean Antarctic Program of Scientific Research 2009-2010. Chilean Antarctic Institute Research Projects Department. Santiago, Chile. Kawaguchi, S., Nicol, S., Taki, K. & Naganobu, M. 2006. Fishing ground selection in the Antarctic krill fishery: Trends in patterns across years, seasons and nations. CCAMLR Science, 13: 117–141. Krause, D. J., Goebel, M. E., Marshall, G. J., & Abernathy, K. (2015). Novel foraging strategies observed in a growing leopard seal (Hydrurga leptonyx) population at Livingston Island, Antarctic Peninsula. Animal Biotelemetry, 3:24. Krause, D.J., Goebel, M.E., Marshall. G.J. & Abernathy, K. In Press. Summer diving and haul-out behavior of leopard seals (Hydrurga leptonyx) near mesopredator breeding colonies at Livingston Island, Antarctic Peninsula. Marine Mammal Science.Leppe, M., Fernandoy, F., Palma-Heldt, S. & Moisan, P 2004. Flora mesozoica en los depósitos morrénicos de cabo Shirreff, isla Livingston, Shetland del Sur, Península Antártica, in Actas del 10º Congreso Geológico Chileno. -
Amanda Bay, Ingrid Christensen Coast, Princess Elizabeth Land, East Antarctica
MEASURE 3 - ANNEX Management Plan for Antarctic Specially Protected Area No 169 AMANDA BAY, INGRID CHRISTENSEN COAST, PRINCESS ELIZABETH LAND, EAST ANTARCTICA Introduction Amanda Bay is located on the Ingrid Christensen Coast of Princess Elizabeth Land, East Antarctica at 69°15' S, 76°49’59.9" E. (Map A). The Antarctic Specially Protected Area (ASPA) is designated to protect the breeding colony of several thousand pairs of emperor penguins annually resident in the south-west corner of Amanda Bay, while providing for continued collection of valuable long- term research and monitoring data and comparative studies with colonies elsewhere in East Antarctica. Only two other emperor penguin colonies along the extensive East Antarctic coastline are protected within ASPAs (ASPA 120, Point Géologie Archipelago and ASPA 167 Haswell Island). Amanda Bay is more easily accessed, from vessels or by vehicle from research stations in the Larsemann Hills and Vestfold Hills, than many other emperor penguin colonies in East Antarctica. This accessibility is advantageous for research purposes, but also creates the potential for human disturbance of the birds. The Antarctic coastline in the vicinity of Amanda Bay was first sighted and named the Ingrid Christensen Coast by Captain Mikkelsen in command of the Norwegian ship Thorshavn on 20 February 1935. Oblique aerial photographs of the coastline were taken by the Lars Christensen expedition in 1937 and by the US Operation Highjump in 1947 for reconnaissance purposes. In the 1954/55 summer, the Australian National Antarctic Research Expedition (ANARE) on the Kista Dan explored the waters of Prydz Bay, and the first recorded landing in the area was made by a sledging party led by Dr. -
Hnitflrcitilc
HNiTflRCiTilC A NEWS BULLETIN published quarterly by the NEW ZEALAND ANTARCTIC SOCIETY (INC) ,m — i * Halley, the British Antarctic Survey's station on the Brunt Ice Shelf, Coats Land,, was rebuilt last season for the third time since 1956-57. This picture taken in March shows one of the four wooden tubes, each of which houses a two-storey building, under construction in a pre-shaped and compacted snow hollow. BAS Copyngh! Registered at Post Office Headquarters, Vol. 10, No. 2 Wellington, New Zealand, as a magazine. SOUTH GEORGIA -.. SOUTH SANDWICH Is «C*2K SOUTH ORKNEY Is x \ 6SignyluK //o Orcadas arg SOUTH AMERICA / /\ ^ Borga T"^00Molodezhnaya \^' 4 south , * /weooEii \ ft SA ' r-\ *r\USSR --A if SHETLAND ,J£ / / ^^Jf ORONMIIDROWNING MAUD LAND' E N D E R B Y \ ] > * \ /' _ "iV**VlX" JN- S VDruzhnaya/General /SfA/ S f Auk/COATS ' " y C O A TBelirano SLd L d l arg L A N D p r \ ' — V&^y D««hjiaya/cenera.1 Beld ANTARCTIC •^W^fCN, uSS- fi?^^ /K\ Mawson \ MAC ROBERTSON LAN0\ \ *usi \ /PENINSULA' ^V^/^CRp^e J ^Vf (set mjp Mow) C^j V^^W^gSobralARG - Davis aust L Siple USA Amundsen-Scon OUEEN MARY LAND flMimy ELLSWORTH , U S A / ^ U S S R ') LAND °Vos1okussR/ r». / f c i i \ \ MARIE BYRO fee Shelf V\ . IAND WILKES LAND Scon ROSS|N2i? SEA jp>r/VICTORIAIj^V .TERRE ,; ' v / I ALAND n n \ \^S/ »ADEUL. n f i i f / / GEORGE V Ld .m^t Dumom d'Urville iranu Leningradskayra V' USSR,.'' \ -------"'•BAlLENYIs^ ANTARCTIC PENINSULA 1 Teniente Matienzo arc 2 Esperanza arg 3 Almirante Brown arg 4 Petrel arg 5 Decepcion arg 6 Vicecomodoro Marambio arg ' ANTARCTICA 7 Ariuro Prat chile 500 1000 Miles 8 Bernardo O'Higgms chile 9 Presidente Frei chile - • 1000 Kilomnre 10 Stonington I. -
Mount Harding, Grove Mountains, East Antarctica
MEASURE 2 - ANNEX Management Plan for Antarctic Specially Protected Area No 168 MOUNT HARDING, GROVE MOUNTAINS, EAST ANTARCTICA 1. Introduction The Grove Mountains (72o20’-73o10’S, 73o50’-75o40’E) are located approximately 400km inland (south) of the Larsemann Hills in Princess Elizabeth Land, East Antarctica, on the eastern bank of the Lambert Rift(Map A). Mount Harding (72°512 -72°572 S, 74°532 -75°122 E) is the largest mount around Grove Mountains region, and located in the core area of the Grove Mountains that presents a ridge-valley physiognomies consisting of nunataks, trending NNE-SSW and is 200m above the surface of blue ice (Map B). The primary reason for designation of the Area as an Antarctic Specially Protected Area is to protect the unique geomorphological features of the area for scientific research on the evolutionary history of East Antarctic Ice Sheet (EAIS), while widening the category in the Antarctic protected areas system. Research on the evolutionary history of EAIS plays an important role in reconstructing the past climatic evolution in global scale. Up to now, a key constraint on the understanding of the EAIS behaviour remains the lack of direct evidence of ice sheet surface levels for constraining ice sheet models during known glacial maxima and minima in the post-14 Ma period. The remains of the fluctuation of ice sheet surface preserved around Mount Harding, will most probably provide the precious direct evidences for reconstructing the EAIS behaviour. There are glacial erosion and wind-erosion physiognomies which are rare in nature and extremely vulnerable, such as the ice-core pyramid, the ventifact, etc. -
Antarctic Primer
Antarctic Primer By Nigel Sitwell, Tom Ritchie & Gary Miller By Nigel Sitwell, Tom Ritchie & Gary Miller Designed by: Olivia Young, Aurora Expeditions October 2018 Cover image © I.Tortosa Morgan Suite 12, Level 2 35 Buckingham Street Surry Hills, Sydney NSW 2010, Australia To anyone who goes to the Antarctic, there is a tremendous appeal, an unparalleled combination of grandeur, beauty, vastness, loneliness, and malevolence —all of which sound terribly melodramatic — but which truly convey the actual feeling of Antarctica. Where else in the world are all of these descriptions really true? —Captain T.L.M. Sunter, ‘The Antarctic Century Newsletter ANTARCTIC PRIMER 2018 | 3 CONTENTS I. CONSERVING ANTARCTICA Guidance for Visitors to the Antarctic Antarctica’s Historic Heritage South Georgia Biosecurity II. THE PHYSICAL ENVIRONMENT Antarctica The Southern Ocean The Continent Climate Atmospheric Phenomena The Ozone Hole Climate Change Sea Ice The Antarctic Ice Cap Icebergs A Short Glossary of Ice Terms III. THE BIOLOGICAL ENVIRONMENT Life in Antarctica Adapting to the Cold The Kingdom of Krill IV. THE WILDLIFE Antarctic Squids Antarctic Fishes Antarctic Birds Antarctic Seals Antarctic Whales 4 AURORA EXPEDITIONS | Pioneering expedition travel to the heart of nature. CONTENTS V. EXPLORERS AND SCIENTISTS The Exploration of Antarctica The Antarctic Treaty VI. PLACES YOU MAY VISIT South Shetland Islands Antarctic Peninsula Weddell Sea South Orkney Islands South Georgia The Falkland Islands South Sandwich Islands The Historic Ross Sea Sector Commonwealth Bay VII. FURTHER READING VIII. WILDLIFE CHECKLISTS ANTARCTIC PRIMER 2018 | 5 Adélie penguins in the Antarctic Peninsula I. CONSERVING ANTARCTICA Antarctica is the largest wilderness area on earth, a place that must be preserved in its present, virtually pristine state. -
The Antarctic Treaty
The Antarctic Treaty Measures adopted at the Thirty-ninth Consultative Meeting held at Santiago, Chile 23 May – 1 June 2016 Presented to Parliament by the Secretary of State for Foreign and Commonwealth Affairs by Command of Her Majesty November 2017 Cm 9542 © Crown copyright 2017 This publication is licensed under the terms of the Open Government Licence v3.0 except where otherwise stated. To view this licence, visit nationalarchives.gov.uk/doc/open-government-licence/version/3 Where we have identified any third party copyright information you will need to obtain permission from the copyright holders concerned. This publication is available at www.gov.uk/government/publications Any enquiries regarding this publication should be sent to us at Treaty Section, Foreign and Commonwealth Office, King Charles Street, London, SW1A 2AH ISBN 978-1-5286-0126-9 CCS1117441642 11/17 Printed on paper containing 75% recycled fibre content minimum Printed in the UK by the APS Group on behalf of the Controller of Her Majestyʼs Stationery Office MEASURES ADOPTED AT THE THIRTY-NINTH ANTARCTIC TREATY CONSULTATIVE MEETING Santiago, Chile 23 May – 1 June 2016 The Measures1 adopted at the Thirty-ninth Antarctic Treaty Consultative Meeting are reproduced below from the Final Report of the Meeting. In accordance with Article IX, paragraph 4, of the Antarctic Treaty, the Measures adopted at Consultative Meetings become effective upon approval by all Contracting Parties whose representatives were entitled to participate in the meeting at which they were adopted (i.e. all the Consultative Parties). The full text of the Final Report of the Meeting, including the Decisions and Resolutions adopted at that Meeting and colour copies of the maps found in this command paper, is available on the website of the Antarctic Treaty Secretariat at www.ats.aq/documents. -
Federal Register/Vol. 84, No. 78/Tuesday, April 23, 2019/Rules
Federal Register / Vol. 84, No. 78 / Tuesday, April 23, 2019 / Rules and Regulations 16791 U.S.C. 3501 et seq., nor does it require Agricultural commodities, Pesticides SUPPLEMENTARY INFORMATION: The any special considerations under and pests, Reporting and recordkeeping Antarctic Conservation Act of 1978, as Executive Order 12898, entitled requirements. amended (‘‘ACA’’) (16 U.S.C. 2401, et ‘‘Federal Actions to Address Dated: April 12, 2019. seq.) implements the Protocol on Environmental Justice in Minority Environmental Protection to the Richard P. Keigwin, Jr., Populations and Low-Income Antarctic Treaty (‘‘the Protocol’’). Populations’’ (59 FR 7629, February 16, Director, Office of Pesticide Programs. Annex V contains provisions for the 1994). Therefore, 40 CFR chapter I is protection of specially designated areas Since tolerances and exemptions that amended as follows: specially managed areas and historic are established on the basis of a petition sites and monuments. Section 2405 of under FFDCA section 408(d), such as PART 180—[AMENDED] title 16 of the ACA directs the Director the tolerance exemption in this action, of the National Science Foundation to ■ do not require the issuance of a 1. The authority citation for part 180 issue such regulations as are necessary proposed rule, the requirements of the continues to read as follows: and appropriate to implement Annex V Regulatory Flexibility Act (5 U.S.C. 601 Authority: 21 U.S.C. 321(q), 346a and 371. to the Protocol. et seq.) do not apply. ■ 2. Add § 180.1365 to subpart D to read The Antarctic Treaty Parties, which This action directly regulates growers, as follows: includes the United States, periodically food processors, food handlers, and food adopt measures to establish, consolidate retailers, not States or tribes. -
Omverdensanalyse for NAV Vestfold Og Telemark
Omverdensanalyse for NAV Vestfold og Telemark November 2020 1 SAMMENDRAG AV OMVERDENSANALYSEN (Omskrevet til Vestfold og Telemark fra den sentrale omverdensanalysen) Omverdensanalysen er inndelt i seks samfunnsområder: Demografi, brukerforventninger, teknologi, arbeidsmarked, helse og levekår og politiske trender. Den største endringen fra tidligere «spådommer» gjelder at det trolig blir svakere befolkningsvekst enn tidligere antatt. Dette gjør at de direkte konsekvenser for NAV også blir mer beskjedne. Koronautbruddet ventes å framskynde mange av de store omstillingene fylket, og landet, står overfor i arbeidslivet. • Svakere befolkningsvekst, sterkere aldring: Befolkningsveksten ventes å bli vesentlig lavere enn tidligere, men vi forventer fortsatt vekst i fylket og med forholdsvis store ulikheter mellom kommunene. De direkte konsekvensene for NAV blir beskjedne for de fleste NAV-ansatte jobber med ytelser/tjenester rettet mot personer i yrkesaktiv alder. Veksten i alderspensjonister vil bli håndterbar. • Økte forventninger til koordinerte tjenester og tilpasset service: Brukernes forventninger vil øke, særlig til tjenester personlig tilpasset den enkeltes behov og livssituasjon på tvers av NAV og offentlig sektor. Digitaliseringen vil stille større krav til spisskompetanse, rådgivning og relasjonskompetanse i de gjenværende personlige brukermøtene, da vi forventer at denne gruppen blir «tyngre». • Datadrevne tjenester gir nye muligheter: I tillegg til digitalisering og automatisering av de fleste tjenester og ytelser, vil algoritmiske systemer og analyser i sanntid gi store muligheter til å tenke nytt om tjenester bygget på personlig tilpasning, anbefalinger til brukere og ansatte samt bruk av nudging («dulting») som mykt virkemiddel for å påvirke adferd. Mulighetene må avveies mot hensynet til personvern og etikk. • Raskere omstillingstakt på arbeidsmarkedet: Teknologisk utvikling, fortsatt høy globalisering og det grønne skiftet vil øke omstillingstakten, og arbeidstakere må forvente å skifte karrierevei og oppdatere kompetansen sin oftere. -
The Antarctic Treaty
Miscellaneous No. 7 (2007) The Antarctic Treaty Measures adopted at the Twenty-ninth Consultative Meeting held at Edinburgh 12 – 23 June 2006 Presented to Parliament by the Secretary of State for Foreign and Commonwealth Affairs by Command of Her Majesty July 2007 Cm 7167 £17.00 Miscellaneous No. 7 (2007) The Antarctic Treaty Measures adopted at the Twenty-ninth Consultative Meeting held at Edinburgh 12 – 23 June 2006 Presented to Parliament by the Secretary of State for Foreign and Commonwealth Affairs by Command of Her Majesty July 2007 Cm 7167 £17.00 © Crown copyright 2007 The text in this document (excluding the Royal Arms and departmental logos) may be reproduced free of charge in any format or medium providing it is reproduced accurately and not used in a misleading context. The material must be acknowledged as Crown copyright and the title of the document specified. Any enquiries relating to the copyright in this document should be addressed to the Licensing Division, HMSO, St Clements House, 2-16 Colegate, Norwich NR3 1BQ. Fax 01603 723000 or e-mail: [email protected] MEASURES ADOPTED AT THE TWENTY-NINTH CONSULTATIVE MEETING HELD AT EDINBURGH 12 - 23 JUNE 2006 The Measures1 adopted at the Twenty-ninth Antarctic Treaty Consultative Meeting are reproduced below from the Final Report of the Meeting. In accordance with Article IX, paragraph 4, of the Antarctic Treaty, the Measures adopted at Consultative Meetings become effective upon approval by all Contracting Parties whose representatives were entitled to participate in the meeting at which they were adopted (i.e.