Title :
Recent surface displacement in bangkok, Thailand inferred from persistent scatterer SAR interferometry
Author :
Ishitsuka, Kazuya ; Tsuji, Takao ; Yamada, Y. ; Matsuoka, T.
Author_Institution :
Dept. of Urban Manage., Kyoto Univ., Kyoto, Japan
Abstract :
In order to estimate recent surface displacement in Bangkok, we applied persistent SAR interferometry using ALOS/PALSAR images acquired October 2007 to December 2010. Previously, land subsidence due to excessive ground water pumping has been reported in this region. However, we detected that ground surface has rebounded during 3 years of the observation period. This rebounded surface can be interpreted as the response on the ground water recovery to confined aquifer due to the decrease in ground water usage. Since the rebounded areas correspond to past ground subsidence areas inferred from differential SAR interferometry using JERS-1/SAR images, it can be inferred that ground water recovery has especially occurred at the preceding subsidence areas.
Keywords :
geomorphology; groundwater; radar imaging; radar interferometry; remote sensing by radar; synthetic aperture radar; terrain mapping; AD 2007 10 to 2010 12; ALOS/PALSAR images; Bangkok; JERS-1/SAR images; Thailand; confined aquifer; differential SAR interferometry; excessive ground water pumping; ground surface displacement; ground water recovery; ground water usage; land subsidence; observation period; past ground subsidence areas; persistent scatterer SAR interferometry; rebounded surface; Cities and towns; Indexes; Interferometry; Monitoring; Rivers; Sea level; Synthetic aperture radar; Bangkok; ground water recovery; land subsidence; persistent scatterer SAR interferometry;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2013 IEEE International
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4799-1114-1
DOI :
10.1109/IGARSS.2013.6723672
