The 2019 California Earthquake: Crustal deformation detected by ALOS-2 data

An earthquake (M 7.1, USGS) occurred in the California on July 6, 2019 (UTC). To measure the crustal deformation caused by this earthquake, we applied interferometric analysis using ALOS-2/PALSAR-2 data. The analysis result shows that the crustal deformation occurred in the part of the Samos island.

Fig.1 SAR interferogram [PNG: 1.4MB]

Fig.2 SAR interferogram [PNG: 2.4MB]

Fig.3 SAR interferogram [PNG: 2.4MB]

Fig. #	Date	Time (UTC)	Flight Dir.	Beam Dir.	Obs. Mode*1	Incidence Angle (around epicenter)	Bperp
1	2016-08-08 2019-07-08	07:39	Asc.	Right	W-W	29°	+2m
2	2017-08-12 2019-07-13	07:46	Asc.	Right	W-W	39°	-20m
3	2019-04-02 2019-07-23	19:52	Des.	Right	W-W	39°	-497m

*1 W: ScanSAR (Normal)
(cf. ALOS-2 Project / PALSAR-2 (JAXA))

Analysis by GSI from ALOS-2data of JAXA.
These results were obtained through the activity of the SAR analysis working group of the Coordinating Committee for Earthquake Prediction.

Date-Time	July 6, 2019, 12:19(UTC)
Hypocenter Location	35.770°N, 117.599°W, Depth:8.0 km (USGS, as of July 12, 2019)
Magnitude	M=7.1 (USGS, as of July 12, 2019)

ALOS-2 (Advanced Land Observing Satellite 2) launched by Japan Aerospace Exploration Agency on May 24, 2014

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YARAI Hiroshi: Head of Division
KOBAYASHI Tomokazu: Chief Researcher

• M 7.1 - 2019 Ridgecrest Earthquake Sequence (USGS)