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Research Objectives Publications People Links & further info Support Jobs and theses

 

Research Objectives:

The flow of the Antarctic ice sheet is controlled by processes occurring at its surface, at its base, and by the spatial variation of rheological properties within the ice. The internal structure of the ice sheet represents an integrated memory of the interaction of these processes and properties, knowledge of which has key implications for unraveling its history and predicting its future behaviour. The research group engages in the detection of macro-scale internal layer architecture with electromagnetic and seismic reflection methods, and the understanding of physical properties on the micro-scale which cause the reflections. Laterally imaging the layer architecture yields complementary information to the direct evidence of physical properties otherwise solely provided by ice cores, which are however limited to single points. The frequency-dependent dielectric properties of firn and ice cores in the range of 100 kHz to 3 GHz are determined with a large coaxial cell. Seismic properties and the possibility to image these by surface experiments are investigated during field studies in the European Alps and in Antarctica. The combination with physical ice-core properties enables forward modeling of seismograms and identification of seismic reflector origins. Development of an inversion scheme yields the means to extract the micro-physical information inherent in electromagnetic and seismic data and to provide a distribution of physical properties in the ice column - a synthetic ice core.

People

alphabetical order

Name	Position and task	Room	Tel.
Diez, Anja	PhD student, inverse methods	AWI/GPI KA	0471-4831-1866 / 0721 608 4978
Eisen, Olaf	Group leader	IUP 342 / AWI 3660	54-6393 / 0471-4831-1969
Heilig, Achim	PostDoc MUSI project	IUP 342 / BADW 314	089-23031-1260
Hofstede, Coen	PostDoc, seismics in ice	AWI	0471-4831-1174
Sanz, Christopher	BSc student, seismic source characteristics	AWI/GPI KA	0471-4831-1866 / 0721 608 4978

 

Former group members

chronological order

Name	Position and task	Period
Hoppe, Mathias	Diploma student, IUP	2008-9
Burnie, Iain	Master student, University of Leeds	2008
Neckel, Niklas	Diploma student, remote sensing	2009-10
Konrad, Hannes	Diploma student, GPR analysis & glacier modelling	2010-11
Drews, Reinhard	PhD student, radar features in ice	2008-11
Bohleber, Pascal	PhD student, physic. properties	2008-11

 

 

Support

limpics is an Emmy Noether Independent Junior Research Group funded by the Deutsche Forschungsgemeinschaft (DFG) and hosted at AWI Bremerhaven and the IUP Heidelberg.