2 Fabian Schmitz 2007 Analysis of hyperspectral CHRIS Proba satellite data for assessing the morphometry of thermokarst lakes in the western Lena Delta (Siberia) Institute of Geography Potsdam University of Potsdam 96 remote sensing, thermoakrst lakes, hyperspectral data, lake morphometry, bathymetry, Lena Delta, Siberia Alfred Wegener Institute for Polar and Marine Research Potsdam