The 2017 Iran-Iraq Earthquake: Crustal deformation detected by ALOS-2 data
Crustal Deformation Observed by Synthetic Aperture Radar (SAR)
A large earthquake (Mw 7.3, USGS) occurred near the Iran-Iraq border on November 12, 2017. Serious damage such as building collapse and many deaths (> 500) has been reported around the epicenter. To measure the crustal deformation caused by the earthquake, we applied interferometric analysis using ALOS-2/PALSAR-2 data.
The results obtained from the data are summarized as follows.
[Features of the crustal deformation]
Quasi up-down and east-west components of displacement
Two or more line-of-sight displacements with different observing directions (Figs. 4 and 5) can be decomposed to quasi up-down and east-west components.
Fig. 3. Geometry of 2.5-D analysis
Fig. 4. [PNG: 6.72MB]
Fig. 5. [PNG:6.06MB]
*1 W：ScanSAR (Normal)
(cf. ALOS-2 Project / PALSAR-2 (JAXA))
Fig. 6. Area of interest
Analysis by GSI from ALOS-2 raw data of JAXA.
These results were obtained through the activity of the SAR analysis working group of the Coordinating Committee for Earthquake Prediction.
Fig. 7. Constructed fault model [PNG: 867KB]
The 2017 Iran-Iraq Earthquake
ALOS-2 (Advanced Land Observing Satellite 2) launched by Japan Aerospace Exploration Agency on May 24, 2014
Paper, Report, Presentation
Kobayashi, T., Y. Morishita, H. Yarai, and S. Fujiwara (2018), InSAR-derived Crustal Deformation and Reverse Fault Motion of the 2017 Iran-Iraq Earthquake in the Northwest of the Zagros Orogenic Belt, Bull. Geospatial Info. Auth., 66. [PDF: 1.3MB]
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YARAI Hiroshi : Head of Division
KOBAYASHI Tomokazu : Chief Researcher
MORISHITA Yu : Chief Researcher