Imperial College London

ProfessorMartinSiegert

Faculty of Natural SciencesThe Grantham Institute for Climate Change

Co-Director,Grantham Institute forClimate Change&Environment
 
 
 
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Contact

 

+44 (0)20 7594 9666m.siegert Website

 
 
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Assistant

 

Ms Gosia Gayer +44 (0)20 7594 9666

 
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Location

 

Grantham Directors OfficeSherfield BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

199 results found

Wang WL, Zwally HJ, Hulbe CL, Siegert MJ, Joughin Iet al., 2003, Anisotropic ice flow leading to the onset of Ice Stream D, West Antarctica: numerical modelling based on the observations from Byrd Station borehole, International Symposium on Physical and Mechanical Processes om Ice in Relation to Glacier and Ice-Sheet Modelling, Publisher: INT GLACIOLOGICAL SOC, Pages: 397-403, ISSN: 0260-3055

CONFERENCE PAPER

Siegert MJ, Payne AJ, Joughin I, 2003, Spatial stability of Ice Stream D and its tributaries, West Antarctica, revealed by radio-echo sounding and interferometry, International Symposium on Physical and Mechanical Processes om Ice in Relation to Glacier and Ice-Sheet Modelling, Publisher: INT GLACIOLOGICAL SOC, Pages: 377-382, ISSN: 0260-3055

CONFERENCE PAPER

Siegert MJ, Dowdeswell JA, 2002, Late Weichselian iceberg, surface-melt and sediment production from the Eurasian Ice Sheet: results from numerical ice-sheet modelling, MARINE GEOLOGY, Vol: 188, Pages: 109-127, ISSN: 0025-3227

JOURNAL ARTICLE

Auffret G, Zaragosi S, Dennielou B, Cortijo E, Van Rooij D, Grousset F, Pujol C, Eynaud F, Siegert Met al., 2002, Terrigenous fluxes at the Celtic margin during the last glacial cycle, MARINE GEOLOGY, Vol: 188, Pages: 79-108, ISSN: 0025-3227

JOURNAL ARTICLE

Taylor J, Dowdeswell JA, Siegert MJ, 2002, Late Weichselian depositional processes, fluxes, and sediment volumes on the margins of the Norwegian Sea (62-75 degrees N), MARINE GEOLOGY, Vol: 188, Pages: 61-77, ISSN: 0025-3227

JOURNAL ARTICLE

Glasser NF, Siegert MJ, 2002, Calculating basal temperatures in ice sheets: An excel spreadsheet method, EARTH SURFACE PROCESSES AND LANDFORMS, Vol: 27, Pages: 673-680, ISSN: 0197-9337

JOURNAL ARTICLE

Siegert MJ, Fisher DA, 2002, A terrestrial analogy for Martian "accublation zones" revealed by airborne ice-penetrating radar from the east Antarctic ice sheet, ICARUS, Vol: 157, Pages: 264-267, ISSN: 0019-1035

JOURNAL ARTICLE

Siegert MJ, Dowdeswell JA, Svendsen JI, Elverhoi Aet al., 2002, The Eurasian Arctic during the last ice age, AMERICAN SCIENTIST, Vol: 90, Pages: 32-39, ISSN: 0003-0996

JOURNAL ARTICLE

Siegert MJ, Ellis-Evans JC, Tranter M, Mayer C, Petit JR, Salamatin A, Priscu JCet al., 2001, Physical, chemical and biological processes in Lake Vostok and other Antarctic subglacial lakes, NATURE, Vol: 414, Pages: 603-609, ISSN: 0028-0836

JOURNAL ARTICLE

Siegert MJ, Dowdeswell JA, Hald M, Svendsen JIet al., 2001, Modelling the Eurasian Ice Sheet through a full (Weichselian) glacial cycle, Annual QUEEN Workshop, Publisher: ELSEVIER SCIENCE BV, Pages: 367-385, ISSN: 0921-8181

CONFERENCE PAPER

Siegert MJ, Marsiat I, 2001, Numerical reconstructions of LGM climate across the Eurasian Arctic, QUATERNARY SCIENCE REVIEWS, Vol: 20, Pages: 1595-1605, ISSN: 0277-3791

JOURNAL ARTICLE

Siegert MJ, Eyers RD, Tabacco IE, 2001, Three-dimensional ice sheet structure at Dome C, central East Antarctica: implications for the interpretation of the EPICA ice core, ANTARCTIC SCIENCE, Vol: 13, Pages: 182-187, ISSN: 0954-1020

JOURNAL ARTICLE

Siegert MJ, Fujita S, 2001, Internal ice-sheet radar layer profiles and their relation to reflection mechanisms between Dome C and the Transantarctic Mountains, JOURNAL OF GLACIOLOGY, Vol: 47, Pages: 205-212, ISSN: 0022-1430

JOURNAL ARTICLE

Siegert MJ, 2001, Comments on "Calculating basal thermal zones beneath the Antarctic ice sheet" by Wilch and Hughes, JOURNAL OF GLACIOLOGY, Vol: 47, Pages: 159-160, ISSN: 0022-1430

JOURNAL ARTICLE

Hubbard B, Siegert MJ, McCarroll D, 2000, Spectral roughness of glaciated bedrock geomorphic surfaces: Implications for glacier sliding, JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, Vol: 105, Pages: 21295-21303, ISSN: 2169-9313

JOURNAL ARTICLE

Siegert MJ, Hodgkins R, 2000, A stratigraphic link across 1100 km of the Antarctic Ice Sheet between the Vostok ice-core site and Titan Dome (near South Pole), GEOPHYSICAL RESEARCH LETTERS, Vol: 27, Pages: 2133-2136, ISSN: 0094-8276

JOURNAL ARTICLE

Howell D, Siegert MJ, Dowdeswell JA, 2000, Modelling the influence of glacial isostasy on Late Weichselian ice-sheet growth in the Barents Sea, JOURNAL OF QUATERNARY SCIENCE, Vol: 15, Pages: 475-486, ISSN: 0267-8179

JOURNAL ARTICLE

Siegert MJ, Kwok R, 2000, Ice-sheet radar layering and the development of preferred crystal orientation fabrics between Lake Vostok and Ridge B, central East Antarctica, EARTH AND PLANETARY SCIENCE LETTERS, Vol: 179, Pages: 227-235, ISSN: 0012-821X

JOURNAL ARTICLE

Siegert MJ, 2000, Antarctic subglacial lakes, EARTH-SCIENCE REVIEWS, Vol: 50, Pages: 29-50, ISSN: 0012-8252

JOURNAL ARTICLE

Siegert MJ, Kwok R, Mayer C, Hubbard Bet al., 2000, Water exchange between the subglacial Lake Vostok and the overlying ice sheet, NATURE, Vol: 403, Pages: 643-646, ISSN: 0028-0836

JOURNAL ARTICLE

Siegert MJ, 2000, Radar evidence of water-saturated sediments beneath the East Antarctic Ice Sheet, Conference on Deformation of Glacial Materials, Publisher: GEOLOGICAL SOC PUBLISHING HOUSE, Pages: 217-229, ISSN: 0305-8719

CONFERENCE PAPER

Kwok R, Siegert MJ, Carsey FD, 2000, Ice motion over Lake Vostok, Antarctica: constraints on inferences regarding the accreted ice, JOURNAL OF GLACIOLOGY, Vol: 46, Pages: 689-694, ISSN: 0022-1430

JOURNAL ARTICLE

Siegert MJ, Bamber JL, 2000, Subglacial water at the heads of Antarctic ice-stream tributaries, JOURNAL OF GLACIOLOGY, Vol: 46, Pages: 702-703, ISSN: 0022-1430

JOURNAL ARTICLE

Howell D, Siegert MJ, 2000, Intercomparison of subglacial sediment-deformation models: application to the Late Weichselian western Barents margin, XXIVth General Assembly of the European-Geophysical-Society, Publisher: INT GLACIOLOGICAL SOC, Pages: 187-196, ISSN: 0260-3055

CONFERENCE PAPER

Mayer C, Siegert MJ, 2000, Numerical modelling of ice-sheet dynamics across the Vostok subglacial lake, central East Antarctica, JOURNAL OF GLACIOLOGY, Vol: 46, Pages: 197-205, ISSN: 0022-1430

JOURNAL ARTICLE

Hodgkins R, Siegert MJ, Dowdeswell JA, 2000, Geophysical investigations of ice-sheet internal layering and deformation in the Dome C region of central East Antarctica, JOURNAL OF GLACIOLOGY, Vol: 46, Pages: 161-166, ISSN: 0022-1430

JOURNAL ARTICLE

Siegert MJ, 2000, The identification, examination and exploration of Antarctic subglacial lakes., Sci Prog, Vol: 83 ( Pt 3), Pages: 223-242, ISSN: 0036-8504

At the floor of the Antarctic ice sheet, 4 km below the Russian research base Vostok Station, lies a 2,000 km3 body of water, comparable in size to Lake Ontario. This remote water mass, named Lake Vostok, is the world's largest subglacial lake by an order of magnitude (Figure 1). Despite ice-surface temperatures regularly around -60 degrees C, the ice-sheet base is kept at the melting temperature by geothermal heating from the Earth's interior. The ice sheet above the lake has been in existence for at least several million years and possibly as long as 20 million years. The origins of Lake Vostok may therefore data back across geological time to the Miocene (7-26 Ma). The hydrology of Lake Vostok can be characterised by subglacial melting across its northern side, and refreezing over the southern section. A deep ice core, located over the southern end of the lake has sampled the refrozen ice. Geochemical analysis of this ice has found that it comprises virtually pure water. However, normal glacier ice contains impurities such as debris and gas hydrates. Subglacial melting and freezing over Lake Vostok may, therefore, leave the lake enriched in potential nutrients issued from the melted glacier ice. Many scientists expect microbial life to exist within the lake, adapted to the extreme conditions of low nutrient and energy levels. Indeed microbes have been found in the basal refrozen layers of the ice sheet. If Lake Vostok has been isolated from the atmosphere for several million years by the ice sheet that lays above it, the microbes within the lake must also date back several million years and may have undergone evolution over this time, yielding life that may be unique to Lake Vostok. Plans are currently being arranged to explore Lake Vostok and other Antarctic subglacial lakes, and identify life in these extraordinary places. Before this happens, however, much more needs to be known about the ice-sheet above subglacial lakes, and the rocks and sediment below them.

JOURNAL ARTICLE

Gorman MR, Siegert MJ, 1999, Penetration of Antarctic subglacial lakes by VHF electromagnetic pulses: Information on the depth and electrical conductivity of basal water bodies, JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, Vol: 104, Pages: 29311-29320, ISSN: 2169-9313

JOURNAL ARTICLE

Siegert MJ, Dowdeswell JA, Melles M, 1999, Late Weichselian glaciation of the Russian high arctic, QUATERNARY RESEARCH, Vol: 52, Pages: 273-285, ISSN: 0033-5894

JOURNAL ARTICLE

Siegert MJ, 1999, Antarctica's Lake Vostok, AMERICAN SCIENTIST, Vol: 87, Pages: 510-517, ISSN: 0003-0996

JOURNAL ARTICLE

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