Title :
A Land-Cover Monitoring for Volcanoes by using ALOS-PALSAR Quad-Pol. Data
Author :
Wada, Yutaka ; Ukawa, Motoo ; Yamaguchi, Yoshio ; Ohkura, Hiroshi
Author_Institution :
Volcano Res. Dept., Nat. Res. Inst. for Earth Sci. & Disaster Prevention, Tsukuba
Abstract :
We applied three-component (H//A) decomposition analysis and four-component (Ps, Pd, Pv and Pc) analysis to ALOS-PALSAR quad-polarized data of Izu-Oshima and Miyakejima volcanoes to monitor volcanic activities. The results demonstrated clear discrimination of forest, urban and volcanic deposit areas, indicating a high possibility of detecting land-cover changes at volcanoes by space-borne PolSAR observations.
Keywords :
remote sensing by radar; spaceborne radar; synthetic aperture radar; terrain mapping; vegetation; volcanology; ALOS; Advanced Land Observing Satellite; Izu-Oshima volcano; Japan; Miyakejima volcano; PALSAR; Phased Array type L-band Synthetic Aperture Radar; PolSAR technique; SAR; forest; four-component decomposition analysis; land-cover monitoring; quad-polarized data; space-borne radar; synthetic aperture radar; three-component decomposition analysis; Azimuth; Cities and towns; Entropy; L-band; Monitoring; Optical scattering; Sensor arrays; Synthetic aperture radar; Volcanic activity; Volcanoes; PALSAR; Polarimetry; Volcano;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. IEEE International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2807-6
Electronic_ISBN :
978-1-4244-2808-3
DOI :
10.1109/IGARSS.2008.4779272
