The 2022 Mexico Earthquake: Crustal deformation detected by ALOS-2 data

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Released: Oct. 6, 2022, Japanese version of this page

Summary

An earthquake (M 7.7, Centro de Instrumentación y Registro Sísmico, A. C., CIRES) occurred in Mexico on Sep. 19, 2022 (UTC). To measure the crustal deformation caused by this earthquake, we applied interferometric analysis using ALOS-2/PALSAR-2 data.The analysis clearly revealed the spatial distribution of crustal deformation.

In the northwestern part of the epicenter, crustal deformation reaching 40 cm in the direction of approaching satellite was observed. (Fig. 1)

InSAR pair

Fig. #	Date	Time (UTC)	Flight Dir.	Beam Dir.	Obs. Mode *1	Incidence Angle (around epicenter)	Bperp
1	2021-09-15 2022-09-29	7:00	Asc.	Right	W-W (350km)	43.6°	25m

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

SAR Interferograms

2022-09-29 SAR interferogram

Fig. 1 SAR interferogram [PNG: 1MB]

INSAR range

Fig.2 range

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

The 2022 Mexico Earthquake

Date-Time	Sep. 19, 2022, 18:05(UTC)
Hypocenter Location	18.22°N, 103.29°W, Depth:15.0km (CIRES, as of Oct. 6, 2022)
Magnitude	M=7.7 (CIRES, as of Oct. 6, 2022)

Satellite

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

Copyrights and Credits

Contact

Geography and Crustal Dynamics Research Center
Crustal Deformation Research
MUNEKANE Hiroshi: Head of Division