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

fYear

2014

fDate

13-18 July 2014

Firstpage

2074

Lastpage

2077

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2014 IEEE International

Conference_Location

Quebec City, QC

Type

conf

DOI

10.1109/IGARSS.2014.6946873

Filename

6946873