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Lamont Update on Subglacial Lake Activites - June 2007 AGAP - IPY Program in East Antarctica

Dr. Robin E. Bell and Dr. Michael Studinger Lamont-Doherty Earth Observatory Columbia University. Lamont Update on Subglacial Lake Activites - June 2007 AGAP - IPY Program in East Antarctica. DOME A. DOME A.

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Lamont Update on Subglacial Lake Activites - June 2007 AGAP - IPY Program in East Antarctica

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  1. Dr. Robin E. Bell and Dr. Michael Studinger Lamont-Doherty Earth Observatory Columbia University Lamont Update on Subglacial Lake Activites - June 2007 AGAP - IPY Program in East Antarctica

  2. DOME A DOME A

  3. AGAP - Building International Partnerships to Explore Antarctica’s Gamburtsev Province Bringing together unique cutting edge geophysical technologies to explore the Gambursev Province International Partners U.S. - Columbia University and 6 other US institutions China - CAGS and PRIC Germany - BGR and AWI Britain - BAS Australia Japan Italy Russia

  4. AGAP team will address 4 fundamental questions: 1) What role does topography play in the nucleation of continental ice sheets? 2) How are major elevated continental massifs formed within intraplate settings but without a straightforward plate tectonic mechanism? 3) How do tectonic processes control the formation, distribution, and stability of subglacial lakes? 4) Where is the oldest climate record in the Antarctic ice sheet?

  5. Ice Surface Topography

  6. AGAP Fundamental Question #1 What Role Did the Gamburtsev Mountain Topography Play in the Nucleation of the East Antarctic Ice Sheet? • Deconto and Pollard

  7. Subglacial Topography

  8. AGAP Fundamental Question #2 How Did The Gamburtsev Mountains, a Major Elevated Continental Massif, Form?

  9. GRACE Gravity Data - Proxy for Topography

  10. AGAP Fundamental Question #3 How do tectonic processes control the formation, distribution, and stability of subglacial lakes? Recovery Lakes Region Location of Subglacial Lakes Vostok Lake Region

  11. Timetable for AGAP Activities 200 2007-2008 GAMSEIS Install Seismic Stations 2008-2009 AGAP Aerogeophysical Survey, Install Seismic Stations 2009-2010 Recover Seismic Stations, Collaborative Analysis

  12. GAMBIT • NSF Supported Aerogeophysical Program • Aircraft Equipped with Gravity, Magnetics, Laser, Ice Penetrating Radar • Using New Equipment Developed Through $2M MRI Grant • Leveraging $25M Grant to U Kansas for Radar • Michael Studinger and Nick Frearson Testing New Equipment High Arctic - Today • Gravity Systems June 2007 Ellsemere • Full Equipment Package Greenland May 2008

  13. Survey Design Based on Vostok • Long Lines Regional Structure and Regional Ice Thickness • Central Grid - Detailed Glaciologic & Geologic Analysis

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