TY  - GEN
A1  - Teshebaeva, Kanayim
A1  - Roessner, Sigrid
A1  - Echtler, Helmut Peter
A1  - Motagh, Mahdi
A1  - Wetzel, Hans-Ulrich
A1  - Molodbekov, Bolot
T1  - ALOS/PALSAR InSAR time-series analysis for detecting very slow-moving landslides in Southern Kyrgyzstan
N2  - This study focuses on evaluating the potential of ALOS/PALSAR time-series data to analyze the activation of deep-seated landslides in the foothill zone of the high mountain Alai range in the southern Tien Shan (Kyrgyzstan). Most previous field-based landslide investigations have revealed that many landslides have indicators for ongoing slow movements in the form of migrating and newly developing cracks. L-band ALOS/PALSAR data for the period between 2007 and 2010 are available for the 484 km2 area in this study. We analyzed these data using the Small Baseline Subset (SBAS) time-series technique to assess the surface deformation related to the activation of landslides. We observed up to ±17 mm/year of LOS velocity deformation rates, which were projected along the local steepest slope and resulted in velocity rates of up to −63 mm/year. The obtained rates indicate very slow movement of the deep-seated landslides during the observation time. We also compared these movements with precipitation and earthquake records. The results suggest that the deformation peaks correlate with rainfall in the 3 preceding months and with an earthquake event. Overall, the results of this study indicated the great potential of L-band InSAR time series analysis for efficient spatiotemporal identification and monitoring of slope activations in this region of high landslide activity in Southern Kyrgyzstan.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 344 
KW  - interferometric SAR (InSAR)
KW  - small baseline subset (SBAS)
KW  - time-series
KW  - ALOS/PALSAR
KW  - deep seated landslide
KW  - very slow moving landslide
Y1  - 2017
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/40008
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-400083
ER  -