Earthquake in Kumamoto Prefecture on July 28, 2026: Crustal deformation detected by ALOS-2, ALOS-4 and NISAR data

Released: July 29, 2026, update: September 9, 2026
Japanese version of this page

3-Dimensional analysis

Fig.1 Displacement from 3D Analysis(Horizontal, Vertical)

　　　　　　　　Fig.1 Displacement from 3D Analysis(Horizontal & Vertical)


Fig.2 Displacement from 3D Analysis(East-West, North-South, Vertical)

　　　　　　　　Fig.2 Displacement from 3D Analysis(East-West, North-South, Vertical) [Link to GSI Maps]


Fig.3 Unwrapped InSAR image used for 3D Analysis

　　　　　　　　Fig.3 Unwrapped InSAR image used for 3D Analysis [Link to GSI Maps]


Data used for 3D analysis
Date Flight Dir. Beam Dir. Obs. Mode *1 Incidence Angle
2025-08-12（ALOS-2）
2026-07-28（ALOS-2）		 Asc. Left U-U 48.3°
2025-11-13（ALOS-4）
2026-07-29（ALOS-2）		 Des. Left U-U 42.7°
2026-07-02（ALOS-4）
2026-07-30（ALOS-4）		 Asc. Right U-U 41.1°
2026-05-15（ALOS-2）
2026-08-01（ALOS-4）		 Des. Left U-U 32.5°
2021-11-03（ALOS-2）
2026-08-05（ALOS-2）		 Des. Right U-U 48.3°
2026-07-11（ALOS-4）
2026-08-08（ALOS-4）		 Asc. Right U-U 34.5°
2026-06-26（NISAR）
2026-08-13（NISAR）		 Des. Left DH-DH 37.3°
2026-07-22（NISAR）
2026-08-15（NISAR）		 Asc. Left DH-DH 44.6°
2026-05-26（ALOS-4）
2026-09-01（ALOS-4）		 Des. Right U-U 38.1°
*1 U: Stripmap (Ultrafine)
Analysis by GSI from ALOS-2 and ALOS-4 data of JAXA , NISAR data of NASA/ISRO.
ALOS-2 and ALOS-4 data were obtained through the activity of the SAR analysis working group for monitoring earthquake activity.
The numerical weather model was provided from JMA based on the agreement.

Download 3D Analysis Results

3D analysis results (GeoTIFF file) : East-West（18MB）, North-South（18MB）, Up-Down（18MB）
To view GeoTIFF files and check the displacement, please use your GIS software or the satellite SAR ground deformation survey browsing program.
A DOI (Digital Object Identifier) has been assigned to these analysis results. If you cite or reuse these products, we would appreciate it if you could include the DOI.
DOI : https://doi.org/10.57499/GSI_SAR_2026_001

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