Research topics of the LIMPICS Group
The LIMPICS group uses radar and seimics to link micro-physical properties to macro features in ice sheets. Current research foci include
- Radar techniques
- Radar internal layering
The form and properties of continuous internal layers detectable with radar represent a memory of the past... [read more...]
- Radio-echo free zones (EFZ) in ice sheets
The echo-free zone occurs in the basal region of ice sheets... [read more...]
- Radar anisotropy
The dependence of radar backscatter on radar polarization is employed to deduce physical properties within the ice and possibly paleoclimate information... [read more...]
- Radar internal layering
- Seismic techniques
- Vibroseismics
During the 2009/2010 field season a vibroseismic source was used on a shelf ice for the very first time... [read more...] - Explosive seismics
At Halvfarryggen internal layers were observed within the ice by using reflection seismics. These internal reflection horizons are due to a change in seismic velocity... [read more...]
- Vibroseismics
- Paleoclimate interpretations of ice cores
[read more...] - Transient processes in snow
Transient processes in snow can be observed with upward-looking radar of the same sample volume over a complete season and allow for deduction of physical properties... [read more...]
These methods are employed at different field sites in Antarctica, e.g. in places such as Halvfarryggen, and in the Alps, especially at our Colle Gnifetti test site, where we try to improve current geophysical methods and also aim at improving ice-core interpretation. Moreover, we employ different techniques of satellite remote sensing to aid our investigations, most importantly interferometric synthetic aperture radar (InSAR).
