Imperial College London
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ProfessorMartinSiegert

Faculty of Natural Sciences, The Grantham Institute for Climate Change

Visiting Professor
 
 
 
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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

333 results found

Siegert MJ, 2006, Glacial landforms, ice sheets, Encyclopedia of Quaternary Science, Pages: 864-871, ISBN: 9780444527479

The growth and decay cycle of ice sheets is forced by orbital variations of the Earth around the Sun. Changes in solar inputs resulting from these variations are too small, however, to account solely for the expansion and retraction of huge ice masses. Instead, orbital climate forcing is supplemented by a series of positive feedback processes, which act to enhance climate cooling, resulting in large-scale glaciation. During deglaciation, as climate warms and ice sheets melt, feedback processes can act to speed up the decay of ice, which has been shown to result in short-term oscillations in climate conditions and, thus, ice sheet mass balance. Ice sheets grow first on land, as a response to climate cooling and consequent lowering of equilibrium line altitudes. Such growth leads to changes in the surface albedo (i.e., reflectivity of a surface, defined as the proportion of radiation reflected divided by the proportion of incoming radiation; hence, an albedo of 1 defines a surface with 100% reflectivity), atmospheric circulation, oceanic circulation and global sea level. Subsequently, shallow marine sections of continents may become glaciated when sea levels are close to their minimum. Ice sheet decay occurs first in lower latitudes and marine-based sections of ice sheets, leading to further sea-level rise. As deglaciation occurs, feedback may affect ice sheet breakup, resulting in accelerated decay and rapid short-term oscillations in ice sheet size.

Book chapter

Bamber JL, Ferraccioli F, Joughin I, Shepherd T, Rippin DM, Siegert MJ, Vaughan DGet al., 2006, East Antarctic ice stream tributary underlain by major sedimentary basin, GEOLOGY, Vol: 34, Pages: 33-36, ISSN: 0091-7613

Journal article

Rippin DM, Bamber JL, Siegert MJ, Vaughan DG, Corr HFJet al., 2006, Basal conditions beneath enhanced-flow tributaries of Slessor Glacier, East Antarctica, JOURNAL OF GLACIOLOGY, Vol: 52, Pages: 481-490, ISSN: 0022-1430

Journal article

Siegert MJ, Pokar M, Dowdeswell JA, Benham Tet al., 2005, Radio-echo layering in West Antarctica: a spreadsheet dataset, EARTH SURFACE PROCESSES AND LANDFORMS, Vol: 30, Pages: 1583-1591, ISSN: 0197-9337

Journal article

Siegert MJ, Carter S, Tabacco I, Popov S, Blankenship DDet al., 2005, A revised inventory of Antarctic subglacial lakes, ANTARCTIC SCIENCE, Vol: 17, Pages: 453-460, ISSN: 0954-1020

Journal article

Siegert MJ, 2005, Reviewing the origin of subglactial Lake Vostok and its sensitivity to ice sheet changes, PROGRESS IN PHYSICAL GEOGRAPHY, Vol: 29, Pages: 156-170, ISSN: 0309-1333

Journal article

Sieger MJ, Taylor J, Payne AJ, 2005, Spectral roughness of subglacial topography and implications for former ice-sheet dynamics in East Antarctica, Joint Assembly of the EGS/AGU/EUG, Publisher: ELSEVIER, Pages: 249-263, ISSN: 0921-8181

Conference paper

Priscu JC, Kennicutt MC, Bell RE, Bulat SA, Ellis-Evans JC, Lukin VV, Petit JR, Powell RD, Siegert MJ, Tabacco Iet al., 2005, Exploring subglacial antarctic lake environments, Eos, Vol: 86, ISSN: 0096-3941

  • Cite
  • Citations: 22
Journal article

Siegert MJ, 2005, Lakes beneath the ice sheet: The occurrence, analysis, and future exploration of Lake Vostok and other Antarctic subglacial lakes, ANNUAL REVIEW OF EARTH AND PLANETARY SCIENCES, Vol: 33, Pages: 215-245, ISSN: 0084-6597

Journal article

Royston-Bishop G, Priscu JC, Tranter M, Christner B, Siegert MJ, Lee Vet al., 2005, Incorporation of particulates into accreted ice above subglacial Vostok lake, Antarctica, International Symposium on Ice and Water Interactions, Publisher: INT GLACIOLOGICAL SOC, Pages: 145-150, ISSN: 0260-3055

Conference paper

Wright A, Wadham J, Siegert M, Luckman A, Kohler Jet al., 2005, Modelling the impact of superimposed ice on the mass balance of an Arctic glacier under scenarios of future climate change, International Symposium on Arctic Glaciology, Publisher: INT GLACIOLOGICAL SOC, Pages: 277-283, ISSN: 0260-3055

Conference paper

Siegert MJ, Hindmarsh R, Corr H, Smith A, Woodward J, King EC, Payne AJ, Joughin Iet al., 2004, Subglacial Lake Ellsworth:: A candidate for <i>in situ</i> exploration in West Antarctica -: art. no. L23403, GEOPHYSICAL RESEARCH LETTERS, Vol: 31, ISSN: 0094-8276

Journal article

Siegert MJ, Taylor J, Payne AJ, Hubbard Bet al., 2004, Macro-scale bed roughness of the Siple Coast ice streams in West Antarctica, EARTH SURFACE PROCESSES AND LANDFORMS, Vol: 29, Pages: 1591-1596, ISSN: 0197-9337

Journal article

Parrenin F, Rémy F, Ritz C, Siegert MJ, Jouzel Jet al., 2004, New modeling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core -: art. no. D20102, JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, Vol: 109, ISSN: 2169-897X

Journal article

Taylor J, Siegert MJ, Payne AJ, Hubbard Bet al., 2004, Regional-scale bed roughness beneath ice masses: measurement and analysis, COMPUTERS & GEOSCIENCES, Vol: 30, Pages: 899-908, ISSN: 0098-3004

Journal article

Siegert MJ, Welch B, Morse D, Vieli A, Blankenship DD, Joughin I, King EC, Vieli GJMCL, Payne AJ, Jacobel Ret al., 2004, Ice flow direction change in interior West Antarctica, SCIENCE, Vol: 305, Pages: 1948-1951, ISSN: 0036-8075

Journal article

Siegert MJ, Payne AJ, 2004, Past rates of accumulation in central West Antarctica, GEOPHYSICAL RESEARCH LETTERS, Vol: 31, ISSN: 0094-8276

Journal article

Siegert MJ, Dowdeswell JA, 2004, Numerical reconstructions of the Eurasian ice sheet and climate during the Late Weichselian, QUATERNARY SCIENCE REVIEWS, Vol: 23, Pages: 1273-1283, ISSN: 0277-3791

Journal article

Hubberten HW, Andreev A, Astakhov VI, Demidov I, Dowdeswell JA, Henriksen M, Hjort C, Houmark-Nielsen M, Jakobsson M, Kuzmina S, Larsen E, Lunkka JP, Lyså A, Mangerud J, Möller P, Saarnisto M, Schirrmeister L, Sher AV, Siegert C, Siegert MJ, Svendsen JIet al., 2004, The periglacial climate and environment in northern Eurasia during the Last Glaciation, QUATERNARY SCIENCE REVIEWS, Vol: 23, Pages: 1333-1357, ISSN: 0277-3791

Journal article

Svendsen JI, Alexanderson H, Astakhov VI, Demidov I, Dowdeswell JA, Funder S, Gataullin V, Henriksen M, Hjort C, Houmark-Nielsen M, Hubberten HW, Ingólfsson O, Jakobsson M, Kjær KH, Larsen E, Lokrantz H, Lunkka JP, Lyså A, Mangerud J, Matiouchkov A, Murray A, Möller P, Niessen F, Nikolskaya O, Polyak L, Saarnisto M, Siegert C, Siegert MJ, Spielhagen RF, Stein Ret al., 2004, Late quaternary ice sheet history of northern Eurasia, QUATERNARY SCIENCE REVIEWS, Vol: 23, Pages: 1229-1271, ISSN: 0277-3791

Journal article

Forman SL, Lubinski DJ, Ingólfsson O, Zeeberg JJ, Snyder JA, Siegert MJ, Matishov GGet al., 2004, A review of postglacial emergence on Svalbard, Franz Josef Land and Novaya Zemlya, northern Eurasia, QUATERNARY SCIENCE REVIEWS, Vol: 23, Pages: 1391-1434, ISSN: 0277-3791

Journal article

Taylor J, Siegert MJ, Payne AJ, Hambrey MJ, O'Brien PE, Cooper AK, Leitchenkov Get al., 2004, Topographic controls on post-Oligocene changes in ice-sheet dynamics, Prydz Bay region, East Antarctica, GEOLOGY, Vol: 32, Pages: 197-200, ISSN: 0091-7613

Journal article

Siegert MJ, 2004, Comment on "A numerical model for an alternative origin of lake vostok and its exobiological implications for Mars'' by N. S. Duxbury, I. A. Zotikov, K. H. Nealson, V. E. Romanovsky, and F. D. Carsey, JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, Vol: 109, ISSN: 2169-9097

Journal article

Vieli GJMCL, Siegert MJ, Payne AJ, 2004, Reconstructing ice-sheet accumulation rates at ridge B, East Antarctica, 7th International Symposium on Antarctic Glaciology (ISAG-7), Publisher: INT GLACIOLOGICAL SOC, Pages: 326-330, ISSN: 0260-3055

Conference paper

Rippin DM, Bamber JL, Siegert MJ, Vaughan DG, Corr HFJet al., 2004, The role of ice thickness and bed properties on the dynamics of the enhanced-flow tributaries of Bailey Ice Stream and Slessor Glacier, East Antarctica, 7th International Symposium on Antarctic Glaciology (ISAG-7), Publisher: INT GLACIOLOGICAL SOC, Pages: 366-372, ISSN: 0260-3055

Conference paper

Royston-Bishop G, Tranter M, Siegert MJ, Lee V, Bates PDet al., 2004, Is Vostok lake in steady state?, 7th International Symposium on Antarctic Glaciology (ISAG-7), Publisher: INT GLACIOLOGICAL SOC, Pages: 490-494, ISSN: 0260-3055

Conference paper

Florindo F, Dunbar RB, Siegert MJ, DeConto RM, Barrett PJ, Cooper AK, Escutia C, Janecek TR, Larter RD, Naish TR, Powell RDet al., 2003, Antarctic Climate Evolution (ACE) research initiative, Terra Antartica Reports, Pages: 127-132

Journal article

Rippin DM, Bamber JL, Siegert MJ, Vaughan DG, Corr HFJet al., 2003, Basal topography and ice flow in the Bailey/Slessor region of East Antarctica, JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE, Vol: 108, ISSN: 2169-9003

Journal article

Mayer C, Grosfeld K, Siegert MJ, 2003, Salinity impact on water flow and lake ice in Lake Vostok, Antarctica, GEOPHYSICAL RESEARCH LETTERS, Vol: 30, ISSN: 0094-8276

Journal article

Siegert MJ, Tranter M, Ellis-Evans JC, Priscu JC, Lyons WBet al., 2003, The hydrochemistry of Lake Vostok and the potential for life in Antarctic subglacial lakes, HYDROLOGICAL PROCESSES, Vol: 17, Pages: 795-814, ISSN: 0885-6087

Journal article

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