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S. Park, A. Bartsch, D. Sabel, W. Wagner:
"Monitoring of thawing process using ENVISAT ASAR Global Mode data";
Talk: IEEE International Geoscience and Remote Sensing Symposium 2010, Honolulu, Hawaii, U.S.A.; 2010-07-25 - 2010-07-30; in: "IGARSS 2010", (2010), ISBN: 978-1-4244-9564-1; 2031 - 2034.

Due to the high temporal sampling rate of ASAR Global
Monitoring mode, it has an application potential for analyzing
seasonal changes in permafrost environment. The objective
of the study is to develop a robust method for monitoring
freeze/thaw cycles beyond threshold approaches. In order to
use ASAR GM time-series for analyzing freeze/thaw states,
a least square fitting of piecewise step function is introduced
in this paper. An experiment result for Siberian permafrost
area near Yakutsk illustrates that it can be a promising
approach in monitoring permafrost ecosystems.