Abstract
On March 11, 2011, the Great East Japan Earthquake struck the Tohoku Region of Japan. A huge area along the northeast coast of Japan was seriously damaged by earthquake with a magnitude of 9.0 and subsequent tsunami. The view of the coastline of the Tohoku Region was dramatically changed by the tsunami. Since then, the author and his group at Tokai University have been monitoring the recovery of the tsunami-damaged areas of Miyagi Prefecture through ground survey and satellite image data analysis. In this study, the authors have investigated how the NDVI seasonal variability of inundated paddy fields changed from year to year after the tsunami. The authors have selected two areas in Miyagi Prefecture in Japan for the test sites of the investigation. One is the paddy fields along the Kitakami River, and the other is the paddy fields in the Sennan Plain of Miyagi Prefecture. Usually, the NDVI of typical paddy fields in Miyagi Prefecture gradually increases from May to August and suddenly decreases in September due to harvesting. The NDVI trend analysis of both areas clarified how the location of paddy fields influenced recovery from the damages of the tsunami.
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