Volcanic deformation at Ioto detected by ALOS-2 and ALOS-4 data

Released: September 10, 2025, update: September 25, 2025 Japanese version of this page

SAR Interferograms

Fig.1 SAR interferograms (1st: 2025-09-08, 2nd: 2025-09-22)

　Fig.1 SAR interferograms (1st: 2025-09-08, 2nd: 2025-09-22)

Fig.2 Coherence (1st: 2025-09-08, 2nd: 2025-09-22)

　Fig.2 Coherence (1st: 2025-09-08, 2nd: 2025-09-22)


Fig.3 SAR interferograms (1st: 2025-09-09, 2nd: 2025-09-23)

　Fig.3 SAR interferograms (1st: 2025-09-09, 2nd: 2025-09-23)

Fig.4 Coherence (1st: 2025-09-09, 2nd: 2025-09-23)

　Fig.4 Coherence (1st: 2025-09-09, 2nd: 2025-09-23)


SAR intensity image

Fig.5 SAR intensity image using ALOS-4 ((upper)2025-09-22 (lower)2025-09-23)

　Fig.5 SAR intensity image using ALOS-4 ((upper)2025-09-22 (lower)2025-09-23)


Fig.6 SAR intensity image using ALOS-2 and ALOS-4 (from 2025-08-04 to 2025-09-23)

　Fig.6 SAR intensity image using ALOS-2 and ALOS-4 (from 2025-08-04 to 2025-09-23)


Analysis by GSI from ALOS-2 and ALOS-4 data of JAXA.
These data were obtained based on the agreement with JAXA and through the Satellite Data Analysis Group for Volcanic Activity.
The numerical weather model was provided from JMA based on the agreement.

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