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
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220 results found

Greenbaum JS, Blankenship DD, Young DA, Richter TG, Roberts JL, Aitken ARA, Legresy B, Schroeder DM, Warner RC, van Ommen TD, Siegert MJet al., 2015, Ocean access to a cavity beneath Totten Glacier in East Antarctica, NATURE GEOSCIENCE, Vol: 8, Pages: 294-298, ISSN: 1752-0894

Journal article

Bingham RG, Rippin DM, Karlsson NB, Corr HFJ, Ferraccioli F, Jordan TA, Le Brocq AM, Rose KC, Ross N, Siegert MJet al., 2015, Ice-flow structure and ice dynamic changes in the Weddell Sea sector of West Antarctica from radar-imaged internal layering, JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE, Vol: 120, Pages: 655-670, ISSN: 2169-9003

Journal article

Young DA, Lindzey LE, Blankenship DD, Greenbaum JS, Garcia De Gorordo A, Kempf SD, Roberts JL, Warner RC, Van Ommen T, Siegert MJ, Le Meur Eet al., 2015, Land-ice elevation changes from photon-counting swath altimetry: first applications over the Antarctic ice sheet, Journal of Glaciology, Vol: 61, Pages: 17-28, ISSN: 1727-5652

Satellite altimetric time series allow high-precision monitoring of ice-sheet mass balance.Understanding elevation changes in these regions is important because outlet glaciers along ice-sheetmargins are critical in controlling flow of inland ice. Here we discuss a new airborne altimetry datasetcollected as part of the ICECAP (International Collaborative Exploration of the Cryosphere by AirborneProfiling) project over East Antarctica. Using the ALAMO (Airborne Laser Altimeter with MappingOptics) system of a scanning photon-counting lidar combined with a laser altimeter, we extend the2003–09 surface elevation record of NASA’s ICESat satellite, by determining cross-track slope and thusindependently correcting for ICESat’s cross-track pointing errors. In areas of high slope, cross-trackerrors result in measured elevation change that combines surface slope and the actual z=t signal.Slope corrections are particularly important in coastal ice streams, which often exhibit both rapidlychanging elevations and high surface slopes. As a test case (assuming that surface slopes do not changesignificantly) we observe a lack of ice dynamic change at Cook Ice Shelf, while significant thinningoccurred at Totten and Denman Glaciers during 2003–09.

Journal article

Kennicutt MC, Chown SL, Cassano JJ, Liggett D, Peck LS, Massom R, Rintoul SR, Storey J, Vaughan DG, Wilson TJ, Allison I, Ayton J, Badhe R, Baeseman J, Barrett PJ, Bell RE, Bertler N, Bo S, Brandt A, Bromwich D, Cary SC, Clark MS, Convey P, Costa ES, Cowan D, Deconto R, Dunbar R, Elfring C, Escutia C, Francis J, Fricker HA, Fukuchi M, Gilbert N, Gutt J, Havermans C, Hik D, Hosie G, Jones C, Kim YD, Le Maho Y, Lee SH, Leppe M, Leitchenkov G, Li X, Lipenkov V, Lochte K, López-Martínez J, Lüdecke C, Lyons W, Marenssi S, Miller H, Morozova P, Naish T, Nayak S, Ravindra R, Retamales J, Ricci CA, Rogan-Finnemore M, Ropert-Coudert Y, Samah AA, Sanson L, Scambos T, Schloss IR, Shiraishi K, Siegert MJ, Simões JC, Storey B, Sparrow MD, Wall DH, Walsh JC, Wilson G, Winther JG, Xavier JC, Yang H, Sutherland WJet al., 2015, A roadmap for Antarctic and Southern Ocean science for the next two decades and beyond, Antarctic Science, Vol: 27, Pages: 3-18, ISSN: 1365-2079

Antarctic and Southern Ocean science is vital to understanding natural variability, the processesthat govern global change and the role of humans in the Earth and climate system. The potential for newknowledge to be gained from future Antarctic science is substantial. Therefore, the international Antarcticcommunity came together to ‘scan the horizon’ to identify the highest priority scientific questions thatresearchers should aspire to answer in the next two decades and beyond. Wide consultation was afundamental principle for the development of a collective, international view of the most important futuredirections in Antarctic science. From the many possibilities, the horizon scan identified 80 key scientificquestions through structured debate, discussion, revision and voting. Questions were clustered into seventopics: i) Antarctic atmosphere and global connections, ii) Southern Ocean and sea ice in a warming world,iii) ice sheet and sea level, iv) the dynamic Earth, v) life on the precipice, vi) near-Earth space and beyond,and vii) human presence in Antarctica. Answering the questions identified by the horizon scan will requireinnovative experimental designs, novel applications of technology, invention of next-generation field andlaboratory approaches, and expanded observing systems and networks. Unbiased, non-contaminatingprocedures will be required to retrieve the requisite air, biota, sediment, rock, ice and water samples.Sustained year-round access to Antarctica and the Southern Ocean will be essential to increase winter-timemeasurements. Improved models are needed that represent Antarctica and the Southern Ocean in theEarth System, and provide predictions at spatial and temporal resolutions useful for decision making.A co-ordinated portfolio of cross-disciplinary science, based on new models of international collaboration,will be essential as no scientist, programme or nation can realize these aspirations alone.

Journal article

Rose KC, Ross N, Jordan TA, Bingham RG, Corr HFJ, Ferraccioli F, Le Brocq AM, Rippin DM, Siegert MJet al., 2015, Ancient pre-glacial erosion surfaces preserved beneath the West Antarctic Ice Sheet, EARTH SURFACE DYNAMICS, Vol: 3, Pages: 139-152, ISSN: 2196-6311

Journal article

Rose KC, Ross N, Bingham RG, Corr HFJ, Ferraccioli F, Jordan TA, Le Brocq AM, Rippin DM, Siegert MJet al., 2014, A temperate former West Antarctic ice sheet suggested by an extensive zone of subglacial meltwater channels, Geology, Vol: 42, Pages: 971-974, ISSN: 0091-7613

Several recent studies predict that the West Antarctic Ice Sheet will become increasingly unstable under warmer conditions. Insights on such change can be assisted through investigations of the subglacial landscape, which contains imprints of former ice-sheet behavior. Here, we present radio-echo sounding data and satellite imagery revealing a series of ancient large sub-parallel subglacial bed channels preserved in the region between the Möller and Foundation Ice Streams, West Antarctica. We suggest that these newly recognized channels were formed by significant meltwater routed along the icesheet bed. The volume of water required is likely substantial and can most easily be explained by water generated at the ice surface. The Greenland Ice Sheet today exemplifies how significant seasonal surface melt can be transferred to the bed via englacial routing. For West Antarctica, the Pliocene (2.6–5.3 Ma) represents the most recent sustained period when temperatures could have been high enough to generate surface melt comparable to that of present-day Greenland. We propose, therefore, that a temperate ice sheet covered this location during Pliocene warm periods.

Journal article

Kennicutt MC, Chown SL, Cassano JJ, Liggett D, Massom R, Peck LS, Rintoul SR, Storey JWV, Vaughan DG, Wilson TJ, Sutherland WJet al., 2014, Polar Research: Six priorities for Antarctic science, NATURE, Vol: 512, Pages: 23-25, ISSN: 0028-0836

Journal article

Rippin DM, Bingham RG, Jordan TA, Wright AP, Ross N, Corr HFJ, Ferraccioli F, Le Brocq AM, Rose KC, Siegert MJet al., 2014, Basal roughness of the Institute and Moller Ice Streams, West Antarctica: Process determination and landscape interpretation, GEOMORPHOLOGY, Vol: 214, Pages: 139-147, ISSN: 0169-555X

Journal article

Aitken ARA, Young DA, Ferraccioli F, Betts PG, Greenbaum JS, Richter TG, Roberts JL, Blankenship DD, Siegert MJet al., 2014, The subglacial geology of Wilkes Land, East Antarctica, GEOPHYSICAL RESEARCH LETTERS, Vol: 41, Pages: 2390-2400, ISSN: 0094-8276

Journal article

Siegert MJ, Ross N, Corr H, Smith B, Jordan T, Bingham RG, Ferraccioli F, Rippin DM, Le Brocq Aet al., 2014, Boundary conditions of an active West Antarctic subglacial lake: implications for storage of water beneath the ice sheet, CRYOSPHERE, Vol: 8, Pages: 15-24, ISSN: 1994-0416

Journal article

Wright AP, Young DA, Bamber JL, Dowdeswell JA, Payne AJ, Blankenship DD, Siegert MJet al., 2014, Subglacial hydrological connectivity within the Byrd Glacier catchment, East Antarctica, JOURNAL OF GLACIOLOGY, Vol: 60, Pages: 345-352, ISSN: 0022-1430

Journal article

Wright AP, Le Brocq AM, Cornford SL, Bingham RG, Corr HFJ, Ferraccioli F, Jordan TA, Payne AJ, Rippin DM, Ross N, Siegert MJet al., 2014, Sensitivity of the Weddell Sea sector ice streams to sub-shelf melting and surface accumulation, CRYOSPHERE, Vol: 8, Pages: 2119-2134, ISSN: 1994-0416

Journal article

Ross N, Jordan TA, Bingham RG, Corr HFJ, Ferraccioli F, Le Brocq A, Rippin DM, Wright AP, Siegert MJet al., 2014, The Ellsworth Subglacial Highlands: Inception and retreat of the West Antarctic Ice Sheet, GEOLOGICAL SOCIETY OF AMERICA BULLETIN, Vol: 126, Pages: 3-15, ISSN: 0016-7606

Journal article

Palmer SJ, Dowdeswell JA, Christoffersen P, Young DA, Blankenship DD, Greenbaum JS, Benham T, Bamber J, Siegert MJet al., 2013, Greenland subglacial lakes detected by radar, GEOPHYSICAL RESEARCH LETTERS, Vol: 40, Pages: 6154-6159, ISSN: 0094-8276

Journal article

Le Brocq AM, Ross N, Griggs JA, Bingham RG, Corr HFJ, Ferraccioli F, Jenkins A, Jordan TA, Payne AJ, Rippin DM, Siegert MJet al., 2013, Evidence from ice shelves for channelized meltwater flow beneath the Antarctic Ice Sheet, NATURE GEOSCIENCE, Vol: 6, Pages: 945-948, ISSN: 1752-0894

Journal article

Siegert M, Ross N, Corr H, Kingslake J, Hindmarsh Ret al., 2013, Late Holocene ice-flow reconfiguration in the Weddell Sea sector of West Antarctica, Quaternary Science Reviews, Vol: 78, Pages: 98-107, ISSN: 0277-3791

Here we report Late Holocene ice sheet and grounding-line changes to the Weddell Sea sector of West Antarctica. Internal radio-echo layering within the Bungenstock Ice Rise, which comprises very slow-flowing ice separating the fast-flowing Institute and Möller ice streams, reveals ice deformed by former enhanced flow, overlain by un-deformed ice. The ice-rise surface is traversed by surface lineations explicable as diffuse ice-flow generated stripes, which thus capture the direction of flow immediately prior to the creation of the ice rise. The arrangement of internal layers can be explained by adjustment to the flow path of the Institute Ice Stream, during either a phase of ice sheet retreat not longer than ∼4000 years ago or by wholesale expansion of the grounding-line from an already retreated situation not sooner than ∼400 years ago. Some combination of these events, involving uplift of the ice rise bed during ice stream retreat and reorganisation, is also possible. Whichever the case, the implication is that the ice sheet upstream of the Bungenstock Ice Rise, which currently grounds over a >1.5 km deep basin has been, and therefore may be, susceptible to significant change.

Journal article

Bamber JL, Siegert MJ, Griggs JA, Marshall SJ, Spada Get al., 2013, Paleofluvial Mega-Canyon Beneath the Central Greenland Ice Sheet, SCIENCE, Vol: 341, Pages: 997-999, ISSN: 0036-8075

Journal article

Siegert M, Bradwell T, 2013, Antarctic Earth Sciences: Preface, EARTH AND ENVIRONMENTAL SCIENCE TRANSACTIONS OF THE ROYAL SOCIETY OF EDINBURGH, Vol: 104, Pages: 1-1, ISSN: 1755-6910

Journal article

Jordan TA, Ferraccioli F, Ross N, Corr HFJ, Leat PT, Bingham RG, Rippin DM, le Brocq A, Siegert MJet al., 2013, Inland extent of the Weddell Sea Rift imaged by new aerogeophysical data, TECTONOPHYSICS, Vol: 585, Pages: 137-160, ISSN: 0040-1951

Journal article

Cavitte MGP, Blankenship DD, Young DA, Siegert MJ, Le Meur Eet al., Radar stratigraphy connecting Lake Vostok and Dome C, East Antarctica, constrains the EPICA/DMC ice core time scale, The Cryosphere Discussions, Vol: 7, Pages: 321-342

<jats:p>&lt;p&gt;&lt;strong&gt;Abstract.&lt;/strong&gt; New airborne radar sounding surveys at 60 MHz are used to trace internal layering between the Vostok and EPICA Dome C ice core sites. Eleven layers, spanning two glacial cycles from the last glacial maximum back to the MIS 7c interglacial, are used to correlate the two ice core chronologies. Independent of palaeoclimate signals, radar sounding enables correlation of the timescales, with a radar depth uncertainty equivalent to hundreds of years, which is small relative to the ice core dating uncertainties of thousands of years. Along the radar transects, horizons belonging to the last glacial cycle are impacted by aeolian stratigraphic reworking that increases radar technique uncertainty for this interval. However, older layers are used to propagate the higher resolution Vostok ages to the lower resolution Dome C ice core using the Suwa and Bender (2008) Vostok O&lt;sub&gt;2&lt;/sub&gt; / N&lt;sub&gt;2&lt;/sub&gt; chronology to give a recalibration of the Parrenin et al. (2007) EPICA EDC3 timescale between 1597 m and 2216 m depth (126 ka to 247 ka age interval).&lt;/p&gt; </jats:p>

Journal article

White J, Siegert M, 2013, One minute with ... Martin Siegert, NEW SCIENTIST, Vol: 217, Pages: 25-25, ISSN: 0262-4079

Journal article

Fretwell P, Pritchard HD, Vaughan DG, Bamber JL, Barrand NE, Bell R, Bianchi C, Bingham RG, Blankenship DD, Casassa G, Catania G, Callens D, Conway H, Cook AJ, Corr HFJ, Damaske D, Damm V, Ferraccioli F, Forsberg R, Fujita S, Gim Y, Gogineni P, Griggs JA, Hindmarsh RCA, Holmlund P, Holt JW, Jacobel RW, Jenkins A, Jokat W, Jordan T, King EC, Kohler J, Krabill W, Riger-Kusk M, Langley KA, Leitchenkov G, Leuschen C, Luyendyk BP, Matsuoka K, Mouginot J, Nitsche FO, Nogi Y, Nost OA, Popov SV, Rignot E, Rippin DM, Rivera A, Roberts J, Ross N, Siegert MJ, Smith AM, Steinhage D, Studinger M, Sun B, Tinto BK, Welch BC, Wilson D, Young DA, Xiangbin C, Zirizzotti Aet al., 2013, Bedmap2: improved ice bed, surface and thickness datasets for Antarctica, CRYOSPHERE, Vol: 7, Pages: 375-393, ISSN: 1994-0416

Journal article

Wright A, Siegert M, 2012, A fourth inventory of Antarctic subglacial lakes, ANTARCTIC SCIENCE, Vol: 24, Pages: 659-664, ISSN: 0954-1020

Journal article

Siegert M, 2012, Hunt for life under Antarctic ice heats up (vol 491, pg 506, 2012), NATURE, Vol: 491, Pages: 651-651, ISSN: 0028-0836

Journal article

Ross N, Bingham RG, Corr HFJ, Ferraccioli F, Jordan TA, Le Brocq A, Rippin DM, Young D, Blankenship DD, Siegert MJet al., 2012, Steep reverse bed slope at the grounding line of the Weddell Sea sector in West Antarctica, NATURE GEOSCIENCE, Vol: 5, Pages: 393-396, ISSN: 1752-0894

Journal article

Wright AP, Young DA, Roberts JL, Schroeder DM, Bamber JL, Dowdeswell JA, Young NW, Le Brocq AM, Warner RC, Payne AJ, Blankenship DD, van Ommen TD, Siegert MJet al., 2012, Evidence of a hydrological connection between the ice divide and ice sheet margin in the Aurora Subglacial Basin, East Antarctica, JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE, Vol: 117, ISSN: 2169-9003

Journal article

Siegert MJ, Clarke RJ, Mowlem M, Ross N, Hill CS, Tait A, Hodgson D, Parnell J, Tranter M, Pearce D, Bentley MJ, Cockell C, Tsaloglou M-N, Smith A, Woodward J, Brito MP, Waugh Eet al., 2012, CLEAN ACCESS, MEASUREMENT, AND SAMPLING OF ELLSWORTH SUBGLACIAL LAKE: A METHOD FOR EXPLORING DEEP ANTARCTIC SUBGLACIAL LAKE ENVIRONMENTS, REVIEWS OF GEOPHYSICS, Vol: 50, ISSN: 8755-1209

Journal article

Ross N, Siegert MJ, Woodward J, Smith AM, Corr HFJ, Bentley MJ, Hindmarsh RCA, King EC, Rivera Aet al., 2011, Holocene stability of the Amundsen-Weddell ice divide, West Antarctica, GEOLOGY, Vol: 39, Pages: 935-938, ISSN: 0091-7613

Journal article

Vieli GJ-MCL, Hindmarsh RCA, Siegert MJ, Bo Set al., 2011, Time-dependence of the spatial pattern of accumulation rate in East Antarctica deduced from isochronic radar layers using a 3-D numerical ice flow model, JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE, Vol: 116, ISSN: 2169-9003

Journal article

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