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

Volume

5

fYear

2001

fDate

2001

Firstpage

2140

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-7031-7

Type

conf

DOI

10.1109/IGARSS.2001.977929

Filename

977929