ALOS/PALSAR InSAR Time-Series Analysis for Detecting Very Slow-Moving Landslides in Southern Kyrgyzstan
"> Figure 1
<p>Geographic location of the Uzgen study area in the Southern Tien Shan. The map shows the main structures overlaid on the topography represented by the ASTER GDEM and the red box indicates the study area. The gray circles correspond to the earthquake events contained in the National Earthquake Information Center (NEIC) catalog for the period between 1973 and 2014.</p> "> Figure 2
<p>Geological and tectonic map of the study area near Uzgen derived from the 1:200,000 Geological map (1985) and field observations. The A and B profiles cross areas covered by mapped landslides scarps and bodies. The landslides were mapped based on optical satellite remote sensing data and field observations.</p> "> Figure 3
<p>Map of mean velocity deformation rates (mm/year) in LOS direction (<b>upper panel</b>) and projected to downslope Vslope velocity deformation rates (mm/year) (<b>lower panel</b>) obtained for spatially distinct coherent targets (color dots) for the time period between 2007 and 2010. The black boxes represent the spatial subsets for the detailed temporal analysis of slope deformation patterns.</p> "> Figure 4
<p>Slope and aspect map of the study area calculated based on ASTER GDEM2.</p> "> Figure 5
<p>Map of Vslope deformations drawn across the west (profile A) and east (profile B) (upper panel). The middle panel shows the coverage of the area by optical RapidEye data which were acquired in August 2014. The lower panels depict profile information of the down slope deformations and elevation data.</p> "> Figure 6
<p>Mapped landslide complexes derived from optical remote sensing data and field observations. Perspective view of the eastern slope (<a href="#remotesensing-07-08973-f004" class="html-fig">Figure 4</a>) overlaid by Rapid Eye imagery acquired on the 5 April 2011 (<b>upper panel</b>) and field photo (yellow box) taken on 11 September 2012 (<b>lower panel</b>). The individual landslide bodies are indicated by different colors, the main scarps are depicted in magenta and secondary scarps are depicted in black.</p> "> Figure 7
<p>Time-series LOS displacement map for the period between 2007 and 2010, the reference date is 2nd July 2008. The data inside of black boxes presented in time-series profiles in <a href="#remotesensing-07-08973-f008" class="html-fig">Figure 8</a>.</p> "> Figure 8
<p>Time-series LOS displacement along profiles A and B for the period between 2007 and 2010 plotted against monthly sums of precipitation and monthly averages of temperature. The peak of the deformation on 2 October 2008 coincides with the Mw 4.1 earthquake of 26 September 2008.</p> ">
Abstract
:1. Introduction
2. Study Area
2.1. Geological and Geomorphological Settings
2.2. Local Climate and Seismicity
2.3. The Landslides
3. Data and Methodology
3.1. Data
3.2. StaMPS Method
3.3. StaMPS Processing
3.4. StaMPS Results Visualization and Deformation along the Local Steepest Slope
4. SBAS Results and Interpretation
4.1. Spatial Distribution of Landslide Deformation
4.2. Temporal Evolution of Landslide Deformation
5. Discussion
5.1. SBAS Results Assessment
5.2. Downslope Deformations of Landslides
5.3. Potential Controls on Landslide Activity
6. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
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Teshebaeva, K.; Roessner, S.; Echtler, H.; Motagh, M.; Wetzel, H.-U.; Molodbekov, B. ALOS/PALSAR InSAR Time-Series Analysis for Detecting Very Slow-Moving Landslides in Southern Kyrgyzstan. Remote Sens. 2015, 7, 8973-8994. https://doi.org/10.3390/rs70708973
Teshebaeva K, Roessner S, Echtler H, Motagh M, Wetzel H-U, Molodbekov B. ALOS/PALSAR InSAR Time-Series Analysis for Detecting Very Slow-Moving Landslides in Southern Kyrgyzstan. Remote Sensing. 2015; 7(7):8973-8994. https://doi.org/10.3390/rs70708973
Chicago/Turabian StyleTeshebaeva, Kanayim, Sigrid Roessner, Helmut Echtler, Mahdi Motagh, Hans-Ulrich Wetzel, and Bolot Molodbekov. 2015. "ALOS/PALSAR InSAR Time-Series Analysis for Detecting Very Slow-Moving Landslides in Southern Kyrgyzstan" Remote Sensing 7, no. 7: 8973-8994. https://doi.org/10.3390/rs70708973