Ground Displacement and Building Damage Estimation of the 2017 Kermanshah Earthquake Using SAR Remote Sensing

Document Type : Original Article

Authors

1 Assistant Professor, University of Tabriz, Iran

2 Professor, Tokyo Institute of Technology, Tokyo, Japan

Abstract

We used two synthetic aperture radar (SAR) datasets with different resolution to monitor the Kermanshah earthquake displacements and the buildings in Sarpole-Zahab town. We have obtained two high resolution dual-polarized (HH and HV) ALOS-2 images in strip map (SM) mode and three dual-polarized (VV and VH) Sentinel-1 images in interferometric wide (IW) mode from ascending orbits. The incidence angle of ALOS-2 and Sentinel-1 datasets were 36.2° and 38.9°, respectively. Temporal baseline of ALOS-2 dataset is 42 days, whereas pre-event and co-seismic temporal baselines of Sentinel-1 dataset are 13 and 18 days, respectively. Human activities after disasters increase and deteriorate the damage proxy maps which sometimes make the damage proxy maps meaningless. Thus, we need post-event images with shortest gaps with the event. Since the revisit cycle of ALOS-2 is rather large, we only use two ALOS-2 images to calculate ground displacement

Keywords

References

[1]-Karimzadeh, S., Miyajima, M., Hassanzadeh, R., Amiraslanzadeh, R., and Kamel, B., 2014, A GIS-based seismic hazard, building vulnerability and human loss assessment for the earthquake scenario in Tabriz, Soil Dynamics and Earthquake Engineering, 263–280.
[2]-Solaymani Azad, Sh., Saboor, N., Moradi, M., Ajhdari, A., Youssefi, T., Mashal, M., and Roustaei, M., 2017, Preliminary report on geological features of the Ezgaleh-Kermanshah earthquake (M~7.3), November 12, 2017, West Iran, SSD of GSI preliminary report number: 17-01, ver.01.
[3]-Karimzadeh, S., Matsuoka, M., Miyajima, M., Adriano, B., Fallahi, A. and Karashi, J., 2018, Sequential SAR Coherence Method for the Monitoring of Buildings in Sarpole-Zahab, Iran, Remote Sensing, 10:1255.
[4]- Jackson, J., 1992, Partitioning of strike-slip and convergent motion between Eurasia and Arabia in Eastern Turkey and the Caucasus, Journal of Geophysical Research, 97 (B9): 12471–12479.
[5]-Jonsson, S., Zebker, H., Segall, P., and Amelung, F., 2002, Fault slip distribution of the Mw 7.2 Hector Mine earthquake estimated from satellite radar and GPS measurements, Bulletin of the Seismological Society of America, 92: 1377–1389.
[6]- Okada, Y., 1985, Surface deformation due to shear and tensile faults in a half-space, Bulletin of the Seismological Society of America, 75:1135–1154.
[7]- Shelters and people gathering sites areas in Sarpol-e- Zahab (North of Sarpol City), Kermanshah, Iran (http://www.unitar.org/unosat/node/44/2745?utm_source=unosat unitar&utm_medium=rss&utm_campaign=maps).
Advance Researches in Civil Engineering
Volume 2, Issue 1
March 2020
Pages 49-56

Files

Share

How to cite

Statistics