Title :
Detection of seasonal water level changes in Amazon forests from JERS-1 SAR images using isolated strong scatterers
Author :
Sakurai-Amano, Takako ; Nakasugi, Kazuhiro ; Takagi, Mikio
Author_Institution :
Dept. of Appl. Electron., Sci. Univ. of Tokyo, Chiba, Japan
Abstract :
A new method of detecting and visualizing narrow open-water rivers from JERS-1 SAR images was applied to a series of twenty continuous scenes of Amazon forests observed in May, August, and October, 1996 and February, 1997. The tributaries observed during high water seasons were longer and wider than those observed during low water level seasons. Comparing the 30 year-average of monthly precipitation and the change in the river width, the estimate water retention period of the part of the Amazon forests is about 1~2 months
Keywords :
hydrological techniques; radar imaging; remote sensing by radar; rivers; spaceborne radar; synthetic aperture radar; AD 1996; AD 1997; Amazon; Brazil; JERS-1; SAR; forest; high water season; isolated strong scatterer; low water level season; measurement technique; method; radar imaging; radar remote sensing; river; river width; season; seasonal variation; synthetic aperture radar; tributary; water level change; water retention period; width; Asia; Brightness; Delay; Image resolution; Layout; Optical scattering; Radar detection; Radar scattering; Rivers; Visualization;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.977929
