ALOS/PALSAR Observation Results of the Magnitude-9.0 Earthquake off the Pacific coast of Tohoku-Kanto District in Japan in 2011
On March 11, 2011 (UTC), a magnitude 9.0 huge earthquake occurred off the Pacific coast of Tohoku-Kanto district in Japan (38.32°N, 142.37°E, 32 km in depth; Hypocenter information from USGS Web site), accompanied by a massive tsunami. The earthquake and tsunami caused severe damage in many cities, and more than 10 thousand people were killed and lost their homes. The Japan Aerospace Exploration Agency (JAXA) performed an emergency observation on March 15 using the Phased Array type L-band Synthetic Aperture Radar (PALSAR) installed on the Advanced Land Observing Satellite (ALOS). In this report, we conduct differential interferometric SAR (DInSAR) processing to detect crustal deformation associated with the earthquake using PALSAR data acquired before (October 28, 2010) and after (March 15, 2011) the earthquake.The blue rectangle indicates the observation area shown in Fig. 2. The red star represents the epicenter of this earthquake.
JAXA plans to continue ALOS observations of the afflicted area.