Result of field survey for ground surface deformation based on InSAR imagery on the Northern Nagano Earthquake in November 22, 2014

Takayuki Nakano; Mikio Tobita; Hidetoshi Nakajima; Izumi Kamiya

doi:10.14866/ajg.2015s.0_100116

Annual Meeting of the Association of Japanese Geographers, Spring 2015

Session ID : 404

DOI https://doi.org/10.14866/ajg.2015s.0_100116

Conference information

Host: The Association of Japanese Geographers

Abstract

Result of field survey for ground surface deformation based on InSAR imagery on the Northern Nagano Earthquake in November 22, 2014

*Takayuki Nakano, Mikio Tobita, Hidetoshi Nakajima, Izumi Kamiya

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Keywords: the 2014 Northern Nagano Earthquake, InSAR imagery, surface rupture, surface deformation

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Abstract

Geospatial Information Authority of Japan (GSI) conducted on InSAR analysis using ALOS-2 data with the 2014 Northern Nagano Earthquake. Plural clear boundaries between interference zone and non-interference zone and discontinuities of interference phase appeared on the InSAR imagery. We conducted on field survey around these boundaries and discontinuities on December 2-3, 2014. As a result, we found out compressive deformations with east side uplift on the road around Otari Village. These are possibility of surface rupture generated by the earthquake.

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