Fukushima Hamadori, Japan Earthquake (M7.0): Crustal deformation detected by ALOS/PALSAR data

A M=7.0 (JMA) earthquake occurred in Fukushima Hamadori Region, Japan on April 11, 2011 (UTC). An interferometric analysis of the data acquired by the Phased Array type L-band Synthetic Aperture Radar (PALSAR) onboard the Advanced Land Observing Satellite (ALOS) allows us to clarify spatial distribution of surface deformation associated with the earthquake. The interferogram shows clear displacement discontinuities along Idosawa fault and Yunotake fault.

Click the image below to download the large one [PNG: 4.21MB]

NOTE: RARR (Range And Range Rate) information is used for the slave SAR data.

kmz file
Click the image below to download kmz file (3.56MB)

Date-Time	April 11, 2011 17:16 (Local Time), 08:16 (UTC)
Hypocenter Location	36.94567°N, 140.67267°E　Depth：6.4 km (JMA, as of April 25, 2011) 37.007°N, 140.477°E　Depth：10 km (USGS, as of April 25, 2011)
Magnitude	7.0 (JMA, as of April 25, 2011) 6.6 (USGS, as of April 25, 2011)

PALSAR sensor onboard "Daichi" (ALOS) satellite launched by Japan Aerospace Exploration Agency on January 24, 2006

Tomokazu Kobayashi, Mikio Tobita, Mamoru Koarai, Takaki Okatani, Akira Suzuki, Yuko Noguchi, Masayuki Yamanaka, Basara Miyahara, InSAR-derived crustal deformation and fault models of normal faulting earthquake (Mj 7.0) in the Fukushima-Hamadori area, Earth, Planets and Space, 64, 1209–1221, 2012. [html]

KOBAYASHI Tomokazu : Researcher
TOBITA Mikio : Head of Division