Title :
Multi-band spaceborne SAR observations of tsunami damaged agricultural fields
Author :
Yonezawa, Chinatsu ; Watanabe, Manabu ; Saito, Genya
Author_Institution :
Grad. Sch. of Agric. Sci., Tohoku Univ., Sendai, Japan
Abstract :
We analyzed the backscattering characteristics of TerraSAR-X, ALOS PALSAR, and RADARSAT-2 data to observe agricultural areas damaged by the tsunami triggered by the 2011 off the Pacific Coast of Tohoku Earthquake. Agricultural parcel data were overlaid, and mean backscattering coefficients were extracted from each parcel. We compared data obtained from different sensors collected on the same day. TerraSAR-X and RADASAT-2 acquired on March 12, 2011, show similar behavior. TerraSAR-X and ALOS PALSAR data obtained on March 16 and 23 were also analyzed. Correlation coefficients of TerraSAR-X and ALOS PALSAR are smaller than those of TerraSAR-X and RADARSAT-2. The present study illustrates that is possible to estimate flooding area by tsunami using the TerraSAR-X, RADARSAT-2, or ALOS PALSAR data. The effect of the observation wavelength on the analysis results is examined.
Keywords :
agriculture; backscatter; remote sensing by radar; synthetic aperture radar; tsunami; AD 2011 03 12; ALOS PALSAR data; RADARSAT-2 data; TerraSAR-X data; Tohoku Earthquake; agricultural parcel data; mean backscattering coefficients; multiband spaceborne SAR observations; tsunami damaged agricultural fields; Backscatter; Correlation coefficient; Earthquakes; L-band; Orbits; Synthetic aperture radar; Tsunami;
Conference_Titel :
Synthetic Aperture Radar (APSAR), 2013 Asia-Pacific Conference on
Conference_Location :
Tsukuba
