Japanese

Interferometric detection of the surface deformation in the Mt. Iwate area

- using JERS-1 SAR -

Using the JERS-1 SAR interferometry, NASDA has successfully detected a surface deformation of the Mt. Iwate and its vicinity area that might be caused by the earthquake at Shizukuishi area of magnitude 6.1 on 16:58 (JST) of 3 September 1998 and the volcanic activity which has been observed during last spring to summer.

Images:
This image was derived from the interferometric analysis of the two SAR images, one image was acquired on 5 November 1997 and the other was acquired on 9 September 1998. Image size is 40 km for both south-north and east-west directions. The scale bar means that light green has no surface change, color change of green->yellow->red a change in approaching to the satellite, and green->blue->purple a change away from the satellite. One color cycle is the change in 11.7 cm. This figure shows two features.

1) maximum lift of 10 cm within a triangular area covering Mt. Iwate, Shizukuishi, and Hachimanndai.

2) At maximum, 48 cm of lift was confirmed at the west side of the fault.

Appendix-1 Surface deformation pattern
Appendix-2 SAR image of the Mt. Iwate and its vicinity area.

any comment: to shimada.masanobu@jaxa.jp

[ Appendix-1 ]	[ Appendix-2 ]
JPEG Image [536 Kbyte]	JPEG Image [121 Kbyte]
tiff Image [1.6 Mbyte]	tiff Image [1.4 Mbyte]

Earth Observation Research Center

Last Update: 15 October 1998