DOCSLIB.ORG

The Antarctic Sun, December 27, 1997

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
The Antarctic Sun, December 27, 1997 DECEMBER 27, 1997 Every Two Weeks Published during the austral summer for the United States Antarctic Program at McMurdo Station, Antarctica. Antarctic Discovery! Bi-PolarConnections: Of Barbs and Antifreeze by Alexander Colhoun Linking the Arctic and Antarctic fireproof vault deep in the heart story and photo by Alexander Colhoun Aof the Smithsonian Museum lined with darkened rows of alcohol-filled jars erfect circles scribed at 66 degrees 33 in the Antarctic; the boundary of various holds the biological encyclopedia of the Pminutes on both ends of the earth treaties Ða political 60û in the Antarctic; or planet. Inside each jar is a holotype: the demark the Arctic and Antarctic circles. There, even by the temperature of the waterÐ the first captured and identified example of the earth tilts just enough to allow at least one Summer Isotherm circumscribes the Antarctic thousands of marine species known to full day a year without a sun set. at 50û. inhabit the seas of this planet. A map offers a different tale. Viewed from While definitions may be vague, one thing A catalogue of life, the shelves sel- above, each region might be defined by the about the polar caps is certain: half of each dom get new additions from the sub-zero limit of ice pack Ðswimming lazily above and year is dark and half of each year is light, and waters of the Antarctic. below 66û; the northern limit of the tree lineÐ that alone draws Todd Franson, a long-time In July, however, the Smithsonian got rising above 64û in the Arctic, but non-existent Antarctic Support Associates employee, to a new Antarctic specimen Ðthe barbled spend his days on the caps of plunder fish or Pogonophryne cerebro- the earth. ÒI havenÕt seen a lot pogon, a discovery made by ice veteran Seasons Greetings of darkness in the last ten Joe Eastman. from Antarctica years,Ó said Franson. ÒI like the daylight.Ó ...cont. on page 5 That may be the greatest understatement of polar living. Franson, like some 30 ASA INSIDE employees, alternates his home between the Arctic and NSTW 1998 National Science And Antarctic, passing the summer Technology Week highlights Arctic and in each location. Antarctic research carried out by the With the exception of days National Science Foundation. traveling between the two, Landing In A Milk Bottle Landing Franson spends most of his life under a shining sun, even when in a complete whiteout is like landing he sleeps. ÒI sleep with the in a bottle of milk Ðyou only know blinds open, the light on my youÕve landed when the wheels touch face,Ó says Franson. ÒIt just down. doesnÕt bother me.Ó Wasting Away in Antarctica The U.S. Franson came to the Antarctic Program retrogrades almost Antarctic from Denali National all of its waste to the continental Park in Alaska. In time the United States. The exception to this is, word has spread, and today a by necessity, waste water. flock of Denali seasonal work- ers have followed in his foot- Perspective Steve Munsell returns to steps. ÒWe used to call him the Antarctica after a sixteen-year absence Toddfather,Ó said Kathy Soutter. and reflects on the changes he sees in ÒAnd the rest of us were the the program. Denali mob.Ó Some come for employ- Profile Breaking barriers was never his ment, others for an adventure intention, but with Ed BurnetteÕs drive Despite being eleven thousand miles from their own kitchens in Denver, bigger than Alaska, but for Dr. and curiosity, it was inevitable. Colorado, Nancy Farrell, left, and her friend, Ellen Copeland, would not be deterred from making Christmas cookies. ...cont. on page 13 2 December 27, 1997 The Antarctic Sun program produced by the National Science Foundation and supported by its corporate sponsors. Its mis- sion is to engage the American public in the spirit of learning and Polar adventure that is the hallmark of science and engineering. NSTW pursues its mission through a wide variety of initia- Theme tives. The most popular is a packet of teaching activities (published in both English and Spanish) in sci- for ence, mathematics, and technolo- gy, designed to inspire the imagi- National Science nations of students, teachers, and parents. & Technology Week This year, the Polar Connections activity packet has story by Pat Olmert many educational activities rang- NSF, Office of Legislative and Public Affairs ing from Polar Opposites: Getting to Know the Arctic and the Antarctic to Polar Protection: How can two of the most isolated, forbid- How Do Polar Animals Survive in Such a ding places on Earth also be among its most Climate? School children can investigate What valuable sites for scientific research? Why do Color Is a Polar Bear? construct protective Participants are Ambassadors people the world over find the Arctic, with its sunglasses Ðfirst developed by Arctic Inuit to the U.S. Antarctic Program polar bears, and the Antarctic, with its pen- natives. Educators will find that the activities include everything from simulated research by Beth Gaston, guins, so endlessly fascinating? Yet when NSF, Office of Legislative and Public Affairs asked, ÔWhy is it polar bears donÕt eat pen- voyages to one-page kitchen-counter experi- ments. guins?Õ oftentimes the general public is ife in Antarctica is interesting and NSTW is also an opportunity for getting stumped. unique, providing us with opportuni- involved at the local level. ÒArctic and L Well here comes an opportunity to interact ties many people will never have. Because of Antarctic researchers along with many other with the public on polar subjects on a large this intrigue, the general public and news program participants in extreme weather scale. reporters are often interested in many aspects regions have an opportunity to share their Polar Connections: Exploring the of life, death, love and work on the ice. experiences and knowledge of a variety of WorldÕs Natural Laboratories is the theme The National Science Foundation (NSF) subjects with public audiences,Ó says Mary of the National Science FoundationÕs 1998 believes this publicity is a good thing. We are Bullock, NSFÕs Office of Legislative and National Science & Technology Week (NSTW, a taxpayer supported agency. Our bosses, Public Affairs. NSTW 1998 and Polar April 26th to May 2nd). The week will focus members of the public, deserve to know how Connections provides an opportunity for on Polar research and education, alerting the we are spending their money. And, in tough orchestrating local activities for public public to the excitement and adventure of sci- budget times such as these, well-known agen- involvement such as open houses; hands-on ence and engineering in both Arctic and cies generally fare better than those that are science and technology demonstrations; lec- Antarctic regions. Polar Connections will obscure. tures at libraries, museums, colleges, and uni- invite people of all ages to explore the worldÕs versities; or visits to elementary and secondary Antarctic Support Associates (ASA) also natural laboratories of science and technology classrooms by knowledgeable travelers to the supports this publicity. ÒOur aim is to create through events and activities designed for this ice. public awareness of the United States yearÕs outreach. Antarctic Program,Ó said Valerie Carroll, who ÒAt NSF, we believe it is important to nur- In its 14th year, National Science & manages public affairs for ASA. ÒASA ture the natural interests of children and the Technology Week is a major public outreach employees are always encouraged to interact child in all of us about the wonders of science with the public and the media. WeÕre lucky to S ANTARCT TE IC A P The Antarctic Sun, part of the United ST R and technology,Ó says Bullock. O D G E R T I A have such an enthusiastic, knowledgeable and N M States Antarctic Program, is funded by U ★ ★ To learn more about National Science & ★ ★ the National Science Foundation. ★ ★ responsible crew. We provide materials, fact- ★ ★ ★ ★ Opinions and conclusions expressed in Technology Week 1998: N A N checking, support and guidance for them as T O I IO T The Sun are not necessarily those of the N A A D L S UN ¥ Write: NSF Staff at NSTW, National CIENCE FO Foundation. they deal with the public and the media.Ó Science Foundation, Office of Legislative and Use: Reproduction and distribution is encouraged with Many of you are excited about being here, acknowledgement of source and author. Public Affairs, Rm. 1245, 4201 Wilson Blvd., what you do and what the program is all Editor: Alexander Colhoun Arlington, Virginia, 22230 or e-mail at about. There are many opportunities to share Publisher: Valerie Carroll, ASA [email protected]. Contributions are welcome. Contact The Sun at your experiences: talking to church or com- [email protected]. In McMurdo, visit our office in ¥ Check us out on the World Wide Web at: munity groups, visiting classrooms or retire- Building 155 or dial 2407. http://www.nsf.gov/od/lpa/nstw/start.htm. ✹ Web address: http://www.asa.org ...cont. on page 7 The Antarctic Sun December 27, 1997 3 riving toward Scott Base at 3:15am, DBill McCormick immediately noticed the sharp contrast of a heavy fog bank curled around Williams Field to the clear, bright sky Landing in a over McMurdo Station. He had been paged by search and rescue team (SAR) leader Steve Dunbar in response to a field mission. Milk Bottle Two LC-130s had been forced to land in story by Susie Brown the Whiteout Area, a crevasse-free landing field on the permanent ice shelf. Fog had vehicle is built to go practically anywhere, and Looking for the aircraft in such thick fog deterred them from landing on the plotted run- this one was equipped with technologically- was like searching for a needle in a haystack.
Load more

Recommended publications
  • Baby, It's Cold Outside!
    Baby, It’s Cold Outside! A Tau Bate reports from the bottom of the planet on a winter of life in the long, dark night of Antarctica By Robert W. Streeter, Wyoming Alpha ’11 HE JOB TODAY IS to in. No way was I going to The United States Antarctic Program is managed by the National go check on a radar give this chance up: I’d Science Foundation. The author is employed by the Antarctic that detects auroras. actually gotten a call to Support Contract to perform work at Amundsen-Scott South t The remote interface Pole Station. He is shown outside the station during the three- work at the South Pole! from my desk in the B2 month summer season when temperatures are around -20 to -30F. I’ll never know what Pod of the elevated sta- exactly qualified me, tion indicates things are above other certainly top- probably just fine, but it’s notch applicants. I started Thursday, and an on-site my application with a check needs to be done. story about my family Were it only a couple caretaking a ranch in win- months ago in December, ter in the remote Wyo- it would be a nice ski with ming Rockies. The ranch a light jacket, tempera- (an active dude ranch in tures in the single-digit the summer season) is negatives Fahrenheit, to situated on the edge of the traverse the 750 meters Gros Ventre Wilderness, to the small elevated not far from Jackson Hole. outbuilding housing the It’s 22 miles from where electronics that power the they stop plowing the array.
    [Show full text]
  • The Commonwealth Trans-Antarctic Expedition 1955-1958
    THE COMMONWEALTH TRANS-ANTARCTIC EXPEDITION 1955-1958 HOW THE CROSSING OF ANTARCTICA MOVED NEW ZEALAND TO RECOGNISE ITS ANTARCTIC HERITAGE AND TAKE AN EQUAL PLACE AMONG ANTARCTIC NATIONS A thesis submitted in fulfilment of the requirements for the Degree PhD - Doctor of Philosophy (Antarctic Studies – History) University of Canterbury Gateway Antarctica Stephen Walter Hicks 2015 Statement of Authority & Originality I certify that the work in this thesis has not been previously submitted for a degree nor has it been submitted as part of requirements for a degree except as fully acknowledged within the text. I also certify that the thesis has been written by me. Any help that I have received in my research and the preparation of the thesis itself has been acknowledged. In addition, I certify that all information sources and literature used are indicated in the thesis. Elements of material covered in Chapter 4 and 5 have been published in: Electronic version: Stephen Hicks, Bryan Storey, Philippa Mein-Smith, ‘Against All Odds: the birth of the Commonwealth Trans-Antarctic Expedition, 1955-1958’, Polar Record, Volume00,(0), pp.1-12, (2011), Cambridge University Press, 2011. Print version: Stephen Hicks, Bryan Storey, Philippa Mein-Smith, ‘Against All Odds: the birth of the Commonwealth Trans-Antarctic Expedition, 1955-1958’, Polar Record, Volume 49, Issue 1, pp. 50-61, Cambridge University Press, 2013 Signature of Candidate ________________________________ Table of Contents Foreword ..................................................................................................................................
    [Show full text]
  • 6560-50-P Environmental Protection Agency [Epa-Hq
    This document is scheduled to be published in the Federal Register on 04/28/2021 and available online at federalregister.gov/d/2021-08842, and on govinfo.gov 6560-50-P ENVIRONMENTAL PROTECTION AGENCY [EPA-HQ-OW-2013-0262; FRL-10022-98-OW] Re-Issuance of a General Permit to the National Science Foundation for the Ocean Disposal of Man-Made Ice Piers from its Station at McMurdo Sound in Antarctica AGENCY: Environmental Protection Agency (EPA). ACTION: Notice; proposed permit. SUMMARY: The Environmental Protection Agency (EPA) proposes to re-issue a general permit under the Marine Protection, Research and Sanctuaries Act (MPRSA) authorizing the National Science Foundation (NSF) to dispose of ice piers in ocean waters. Permit re-issuance is necessary because the current permit is due to expire on May 21, 2021. EPA does not propose substantive changes to the content of the current permit. DATES: Written comments on this proposed general permit will be accepted until [INSERT DATE 30 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. ADDRESSES: This proposed permit is identified as Docket No. EPA-HQ-OW-2013-0262. Submit your comments to the public docket for this proposed permit at https://www.regulations.gov. Follow the online instructions for submitting comments. All submissions received must include the Docket ID No., and comments received may be posted without change to https://www.regulations.gov, including any personal information provided. Out of an abundance of caution for members of the public and our staff, the EPA Docket Center and Reading Room are closed to the public, with limited exceptions, to reduce the risk of transmitting COVID-19.
    [Show full text]
  • Nsf.Gov OPP: Report of the U.S. Antarctic Program Blue Ribbon
    EXECUTIVE SUMMARY MORE AND BETTER SCIENCE IN ANTARCTICA THROUGH INCREASED A LOGISTICAL EFFECTIVENESS Report of the U.S. Antarctic Program Blue Ribbon Panel Washington, D.C. July 23, 2012 This booklet summarizes the report of the U.S. Antarctic Program Blue Ribbon Panel, More and Better Science in Antarctica Through Increased Logistical Effectiveness. The report was completed at the request of the White House office of science and Technology Policy and the National Science Foundation. Copies of the full report may be obtained from David Friscic at [email protected] (phone: 703-292-8030). An electronic copy of the report may be downloaded from http://www.nsf.gov/ od/opp/usap_special_review/usap_brp/rpt/index.jsp. Cover art by Zina Deretsky. Front and back inside covers showing McMurdo’s Dry Valleys in Antarctica provided by Craig Dorman. CONTENTS Introduction ............................................ 1 The Panel ............................................... 2 Overall Assessment ................................. 3 U.S. Facilities in Antarctica ....................... 4 The Environmental Challenge .................... 7 Uncertainties in Logistics Planning ............. 8 Activities of Other Nations ....................... 9 Economic Considerations ....................... 10 Major Issues ......................................... 11 Single-Point Failure Modes ..................... 17 Recommendations ................................. 18 Concluding Observations ....................... 21 U.S. ANTARCTIC PROGRAM BLUE RIBBON PANEL WASHINGTON,
    [Show full text]
  • U.S. Advance Exchange of Operational Information, 2005-2006
    Advance Exchange of Operational Information on Antarctic Activities for the 2005–2006 season United States Antarctic Program Office of Polar Programs National Science Foundation Advance Exchange of Operational Information on Antarctic Activities for 2005/2006 Season Country: UNITED STATES Date Submitted: October 2005 SECTION 1 SHIP OPERATIONS Commercial charter KRASIN Nov. 21, 2005 Depart Vladivostok, Russia Dec. 12-14, 2005 Port Call Lyttleton N.Z. Dec. 17 Arrive 60S Break channel and escort TERN and Tanker Feb. 5, 2006 Depart 60S in route to Vladivostok U.S. Coast Guard Breaker POLAR STAR The POLAR STAR will be in back-up support for icebreaking services if needed. M/V AMERICAN TERN Jan. 15-17, 2006 Port Call Lyttleton, NZ Jan. 24, 2006 Arrive Ice edge, McMurdo Sound Jan 25-Feb 1, 2006 At ice pier, McMurdo Sound Feb 2, 2006 Depart McMurdo Feb 13-15, 2006 Port Call Lyttleton, NZ T-5 Tanker, (One of five possible vessels. Specific name of vessel to be determined) Jan. 14, 2006 Arrive Ice Edge, McMurdo Sound Jan. 15-19, 2006 At Ice Pier, McMurdo. Re-fuel Station Jan. 19, 2006 Depart McMurdo R/V LAURENCE M. GOULD For detailed and updated schedule, log on to: http://www.polar.org/science/marine/sched_history/lmg/lmgsched.pdf R/V NATHANIEL B. PALMER For detailed and updated schedule, log on to: http://www.polar.org/science/marine/sched_history/nbp/nbpsched.pdf SECTION 2 AIR OPERATIONS Information on planned air operations (see attached sheets) SECTION 3 STATIONS a) New stations or refuges not previously notified: NONE b) Stations closed or refuges abandoned and not previously notified: NONE SECTION 4 LOGISTICS ACTIVITIES AFFECTING OTHER NATIONS a) McMurdo airstrip will be used by Italian and New Zealand C-130s and Italian Twin Otters b) McMurdo Heliport will be used by New Zealand and Italian helicopters c) Extensive air, sea and land logistic cooperative support with New Zealand d) Twin Otters to pass through Rothera (UK) upon arrival and departure from Antarctica e) Italian Twin Otter will likely pass through South Pole and McMurdo.
    [Show full text]
  • Die Expedition ANT-XXIV/2
    Die Expedition ANT-XXIV/2 Wochenberichte 5. Dezember 2007 13. Dezember 2007 19. Dezember 2007 29. Dezember 2007 3. Januar 2008 10. Januar 2008 16. Januar 2008 25. Januar 2008 4. Februar 2008 Überblick und Fahrtverlauf Der Schwerpunkt der wissenschaftliche Anteil der Expedition ist drei Projekten des Internationalen Polarjahres IPY gewidmet. SCACE – Synoptische Studie des Zirumantarktischen Klima- und Ökosystems – untersucht physikalische und biologische Zusammenhänge im antarktischen Zirkumpolarstrom (ACC) um die entsprechenden Mechanismen aufzuklären, die die Ozeanproduktivität und den Wassermassentransport bestimmen. SYSCO – Gekoppelte Systeme in der Tiefsee – untersucht den Einfluss der pelago-benthischen Kopplung in der Tiefsee in ausgewählten Gebieten zwischen der Subtropischen Konvergenz und dem antarktischen Kontinent. LAKRIS – Lazarevsee Krill Studie – bestimmt die Verteilungsmuster, Lebenszyklen und die Physiologie antarktischen Krills in der Lazarevsee. Eine weitere wichtige Aufgabe ist der unterstützende eisbrechende Einsatz für die zwei Transportschiffe, die Material für die neue Neumayer III Station anliefern. Zusätzlich wird Polarstern so früh die Eisbedingungen es zulassen Neumayer II mit Proviant, Material und Treibstoff für die Sommerkampagne versorgen. Fahrtverlauf: 28. November 2007 Auslaufen Kapstadt 30. November 2007: Beginn der Beobachtungen während der Fahrt 4. Dezember 2007: Beginn der Stationsarbeiten ca. 10 Dezember 2007 (abhängig von der Eisbedeckung): Versorgung Neumayer 28.Januar 2008: Ende der Stationsarbeiten
    [Show full text]
  • The Antarctic Sun, January 8, 2006
    January 8, 2006 New picture at Pole operations Ice claims By Peter Rejcek Sun staff many lives At 1 p.m. on Dec. 26, Neil Conant put himself out of a job when he announced that over time the transition of the operations By Steven Profaizer center from under the South Sun staff Pole Dome to the new elevated “Today was the day I station was complete. would give anything in The veteran communica- this world to turn back.” tions operator was temporar- So starts Charles ily brought to Antarctica to Bevilacqua’s Jan. 6, 1956 help operate the old ops center journal entry. That was while the new one was brought the day he witnessed the online. Conant was philosophi- death of a young Navy cal about witnessing the end of tractor driver, Richard an era. Williams, during the first “That’s progress,” he said. month of construction of “Things change.” McMurdo Station. And how they’ve changed. Throughout Antarct- The Station Operations Center Photos by Peter Rejcek / The Antarctic Sun ica’s brief history with (SOC) is the new ground zero A look at the new South Pole Station Operations Center is inset into people, it has claimed a photo of its high-tech audio/visual monitor, ringed with camera views of various areas of the station. many lives — about 60 See COMMS on page 7 of which occurred as part of the United States program in Antarctica On the Prowl over the last 50 years. Bevilacqua’s journal is just one of many similar Meteorite hunt attracts scientists accounts that tell the tale from universities around the world See DEATH on page 8 By Peter Rejcek Kelley is one of Ralph’s Harvey’s 12 so- Sun staff called meteorite hunters, a band of geologists Quote of the Week Mike Kelley studies asteroids so far and mountaineers who scour the continent’s out of reach that he needs a powerful tele- See METEORITE on page 10 scope in Hawaii to observe them.
    [Show full text]
  • US Coast Guard Polar Ice Operations Program AICC March
    U.S.U.S. CoastCoast GuardGuard PolarPolar IceIce OperationsOperations ProgramProgram AICCAICC MarchMarch ‘04‘04 Polar Icebreaker Mission Analysis Purpose: Evaluate “national” polar icebreaking mission needs through the year 2020. Method: Contractor will gain input from various Polar Icebreaker “customers” to determine polar region mission needs and recommended systems to accomplish mission goals. Goal of Mission Analysis: A mission analysis is required as the first step in the Gov’t’s Major Acquisition Process. Since POLAR performance & reliability are declining rapidly, we need to complete this study as soon as possible. 2 Mission Analysis Details • Identify & analyze past, current & potential future polar missions through the year 2020. • Identify current capability shortfalls • Identify technological improvements that could improve mission effectiveness and efficiency. • Identify viable alternative methods of mission success • Identify & quantify polar region logistics & science support. • Identify potential icebreaker support for future NW passage or northern sea route marine operations. • Evaluate, analyze and quantify various systems that could most efficiently and effectively accomplish USCG polar region missions through the year 2020. 3 Mission Analysis Details (cont’d) • Evaluate equipment & science communication needs onboard polar icebreakers. • Evaluate USCG science personnel support and determine most viable & effective method to meet science research needs • Evaluate level of aerial asset support currently provided and needed
    [Show full text]
  • A Method for Construction of an Energy-Efficient Ice Floating Pier in the Arctic Using Hardened Ice
    E3S Web of Conferences 178, 01064 (2020) https://doi.org/10.1051/e3sconf/202017801064 HSTED-2020 A method for construction of an energy-efficient ice floating pier in the Arctic using hardened ice G L Kagan1,*, L R Mukhametova2 and A Y Velsovskij1 1Department of Highways, Vologda State University, Lenina ul. 15, 160000, Russia 2Kazan State Power Engineering University, Kazan, Russia Abstract. This paper presents studies on increasing the ice strength using various additives. It is indicated that addition of wood fiber (artificial composition) and vegetable fiber (natural composition - frozen peat) to ice is an energy-efficient method to increase its strength. This enhances the possibilities of using ice during building and construction works in the Arctic. As an example, the authors proposed a floating ice pier design. 1 Introduction Today this material finds its application in construction. In the northern regions of Russia, ice is used to One of the directions of the Russian state program strengthen the roadbed in the winter (“winter roads”), “Socio-economic development of the Arctic zone of the however it is necessary to solve the problem of reducing Russian Federation” is to develop coastal infrastructure the coefficient of adhesion of wheel to road. during reclaiming of the Arctic zone. This work should Ice is also used in the construction of ice crossings have a fast, but at the same time rational, resource- for cars and trains. An interesting historical fact is the saving approach, so it is important to use proprietary construction of the largest railway ice crossing through technologies that make it possible to obtain energy- Lake Baikal in 1904, which connected the eastern and efficient constructions at relatively low costs.
    [Show full text]
  • Rifting Processes and Ice-Flow Modulation Observed on Mertz Glacier, East Antarctica
    Journal of Glaciology, Vol. 61, No. 230, 2015 doi: 10.3189/2015JoG15J028 1183 Rifting processes and ice-flow modulation observed on Mertz Glacier, East Antarctica L. LESCARMONTIER,1;2 B. LEGRESY,4;3;2 N.W. YOUNG,5;3 R. COLEMAN,6;3 L. TESTUT,2 C. MAYET,2 P. LACROIX7 1Research School of Earth Sciences, The Australian National University, Canberra, Australian Capital Territory, Australia 2LEGOS (CNRS–CNES–UPS–IRD), Toulouse, France 3Antarctic Climate & Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia 4CSIRO Oceans and Atmosphere Flagship, Hobart, Tasmania, Australia 5Australian Antarctic Division, Kingston, Tasmania, Australia 6Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia 7Institut des Sciences de la Terre (ISTerre), CNRS/IRD, Université de Grenoble, Grenoble, France Correspondence: L. Lescarmontier <[email protected]> ABSTRACT. We investigated the evolution of two major rifts cutting across Mertz Glacier Tongue, East Antarctica, using a combination of satellite images and 60 day sets of GPS data from two stations deployed either side of the western rift in 2007. The eastern rift began to open in the early 1990s, and the western rift initiated in 2002 in conjunction with the collision of a large iceberg with the tongue. Velocity time series derived from the 2007 GPS data exhibited strong variations at tidal periods modulated by sea-surface height and sea-surface slope and reproduced here with a conceptually simple model. We found that opening of the western rift in 2002 leads to a dramatic change in behavior of the tongue as the large range in velocity (700–2400 m aÀ 1) observed in 2000 was largely reduced (1075– 1225 m aÀ 1) in 2007.
    [Show full text]
  • Federal Register/Vol. 68, No. 4/Tuesday, January 7, 2003/Notices
    Federal Register / Vol. 68, No. 4 / Tuesday, January 7, 2003 / Notices 775 opportunity to submit comments in significant public interest in the holding accepted until February 6, 2003. All response to public notices nor do the of a public hearing, EPA may decide to comments must be received or state’s public notice procedures include hold such a hearing. postmarked by midnight of February 6, providing public notices by mail to all Dated: December 18, 2002. 2003, or must be delivered by hand by interested parties, as required by the Bharat Mathur, the close of business of that date to the regulations. In order to partially address address specified below. this concern, the state has implemented Acting Regional Administrator, Region 5. an internet based public notice system [FR Doc. 03–285 Filed 1–6–03; 8:45 am] ADDRESSES: This proposed permit is that makes all public notices available BILLING CODE 6560–50–P identified as Docket No. OW–2002– on the MDEQ website. EPA and MDEQ 0048. Please send an original and three will be discussing additional corrective copies of your comments and enclosures actions that need to be taken to ensure ENVIRONMENTAL PROTECTION (including references) to the ‘‘OW– that all interested persons receive timely AGENCY 2002–0048, Comment Clerk’’, Water public notices of projects requiring [FRL–7436–5] Docket (MC 4101T), U.S. Environmental CWA section 404 permits. Protection Agency, 1200 Pennsylvania As part of our review of MDEQ’s Issuance of a General Permit to the Avenue, NW., Washington, DC 20460. enforcement efforts, citizen complaint National Science Foundation for the Hand deliveries should be delivered to: files were reviewed in all of the MDEQ Ocean Disposal of Man-Made Ice Piers EPA Water Docket, 1301 Constitution district offices.
    [Show full text]
  • A 200 Year Sulfate Record from Sixteen Antarctic Ice Cores and Associations with Southern Ocean Sea-Ice Extent D
    The University of Maine DigitalCommons@UMaine Earth Science Faculty Scholarship Earth Sciences 2005 A 200 Year Sulfate Record from Sixteen Antarctic Ice Cores and Associations With Southern Ocean Sea-Ice Extent D. Dixon Paul Andrew Mayewski University of Maine - Main, [email protected] S. Kaspari Karl J. Kreutz University of Maine - Main, [email protected] Gordon S. Hamilton University of Maine - Main, [email protected] See next page for additional authors Follow this and additional works at: https://digitalcommons.library.umaine.edu/ers_facpub Part of the Earth Sciences Commons Repository Citation Dixon, D.; Mayewski, Paul Andrew; Kaspari, S.; Kreutz, Karl J.; Hamilton, Gordon S.; Maasch, Kirk A.; Sneed, Sharon B.; and Handley, M. J., "A 200 Year Sulfate Record from Sixteen Antarctic Ice Cores and Associations With Southern Ocean Sea-Ice Extent" (2005). Earth Science Faculty Scholarship. 121. https://digitalcommons.library.umaine.edu/ers_facpub/121 This Conference Proceeding is brought to you for free and open access by DigitalCommons@UMaine. It has been accepted for inclusion in Earth Science Faculty Scholarship by an authorized administrator of DigitalCommons@UMaine. For more information, please contact [email protected]. Authors D. Dixon, Paul Andrew Mayewski, S. Kaspari, Karl J. Kreutz, Gordon S. Hamilton, Kirk A. Maasch, Sharon B. Sneed, and M. J. Handley This conference proceeding is available at DigitalCommons@UMaine: https://digitalcommons.library.umaine.edu/ers_facpub/121 Annals of Glaciology 41 2005 155 A 200 year sulfate record from 16 Antarctic ice cores and associations with Southern Ocean sea-ice extent Daniel DIXON, Paul A. MAYEWSKI, Susan KASPARI, Karl KREUTZ, Gordon HAMILTON, Kirk MAASCH, Sharon B.
    [Show full text]