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Activities of the Advanced Land Observing Satellite (ALOS) for the 2011 Great East Japan Earthquake

The Japan Aerospace Exploration Agency (JAXA) performed disaster monitoring for the 2011 Great East Japan Earthquake. The Advanced Land Observing Satellite (ALOS) acquired 450 scenes of data for the disaster. Time series flood extent change of the tsunami was obtained from the optical sensor aboard ALOS. Interferometric SAR (InSAR) analysis of the synthetic aperture radar (SAR) aboard the satellite revealed the whole picture of crustal deformation associated with the earthquake. The data and analysis results were provided to the relevant governmental ministries, agencies, and local governments.