Title :
COSMO-SkyMed data observation of reconstruction process in agricultural fields damaged by the March 11 2011 tsunami
Author :
Yonezawa, Chinatsu ; Shibata, Jun
Author_Institution :
Grad. Sch. of Agric. Sci., Tohoku Univ., Sendai, Japan
Abstract :
To extract annual changes in paddy field areas, we analyzed COSMO-SkyMed observation data relating to an area damaged by the 2011 Tohoku earthquake. Backscattering coefficient (gamma naught: γ0) values were calculated for images obtained on June 4 2011, June 2 2012, and June 9 2013. Mean backscattering coefficients were calculated for each agricultural parcel using vector boundary data. Areas of relatively low backscattering coefficients correspond with fields that were flooded in relation to rice planting, or fields that have not been repaired. The area of low backscattering coefficients expanded annually between the inland area and the coastal area, showing the progress of paddy field reconstruction. The spatial distribution of COSMO-SkyMed data backscattering coefficient patterns in 2011 were similar to that of TerraSAR-X data obtained 1 day after the COSMO-SkyMed data.
Keywords :
earthquakes; tsunami; vegetation; AD 2011 03 11; AD 2011 06 04 to 2013 06 09; COSMO-SkyMed data observation; TerraSAR-X data; Tohoku earthquake; agricultural fields; backscattering coefficient; coastal area; mean backscattering coefficients; paddy field areas; reconstruction process; rice planting; spatial distribution; tsunami; vector boundary data; Backscatter; Earthquakes; Image reconstruction; Satellites; Sea measurements; Synthetic aperture radar; Tsunami; 2011 Tohoku earthquake; X-band; disaster reconstruction; paddy fields; synthetic aperture radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2014 IEEE International
Conference_Location :
Quebec City, QC
DOI :
10.1109/IGARSS.2014.6946873
