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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214 results found

SIEGERT MJ, DOWDESWELL JA, 1995, LATE WEICHSELIAN ICE-SHEET SENSITIVITY OVER FRANZ-JOSEF-LAND, RUSSIAN HIGH ARCTIC, FROM NUMERICAL MODELING EXPERIMENTS, BOREAS, Vol: 24, Pages: 207-224, ISSN: 0300-9483

Journal article

SIEGERT MJ, DOWDESWELL JA, 1995, MODELING ICE-SHEET SENSITIVITY TO LATE WEICHSELIAN ENVIRONMENTS IN THE SVALBARD BARENTS SEA REGION, JOURNAL OF QUATERNARY SCIENCE, Vol: 10, Pages: 33-43, ISSN: 0267-8179

Journal article

SIEGERT MJ, DOWDESWELL JA, 1995, NUMERICAL MODELING OF THE LATE WEICHSELIAN SVALBARD BARENTS SEA-ICE SHEET, QUATERNARY RESEARCH, Vol: 43, Pages: 1-13, ISSN: 0033-5894

Journal article

Shoemaker IM, Kusenko A, Munneke PK, Romero-Wolf A, Schroeder DM, Siegert MJet al., Reflections On the Anomalous ANITA Events: The Antarctic Subsurface as a Possible Explanation

The ANITA balloon experiment was designed to detect radio signals initiatedby neutrinos and cosmic ray air showers. These signals are typicallydiscriminated by the polarization and phase inversions of the radio signal. Thereflected signal from cosmic rays suffer phase inversion compared to a directtau neutrino event. In this paper we study sub-surface reflection, which canoccur without phase inversion, in the context of the two anomalous up-goingevents reported by ANITA. We find that subsurface layers and firn densityinversions may plausibly account for the events, while ice fabric layers andwind ablation crusts could also play a role. This hypothesis can be tested withradar surveying of the Antarctic region in the vicinity of the anomalous ANITAevents. Future experiments should not use phase inversion as a sole criterionto discriminate between downgoing and upgoing events, unless the subsurfacereflection properties are well understood.

Working paper

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