Use este identificador para citar ou linkar para este item: http://repositorio.inpa.gov.br/handle/123/5897
Título: Tectonic fault control of wetland distribution in the Central Amazon revealed by JERS-1 Radar Imagery
Autor(es): Y Hashimoto
A Rosenqvist
F P Miranda
Bruce Rider Forsberg
Assunto: area alagavel
falha
tectonica
ISSN: 0101-708X
Revista: Boletim Goiano de Geografia
Volume: 19
Resumo: A mosaic of JERS-1 L-band synthetic aperture radar (SAR) images was used to investigate the influence of tectonic faults on wetland distributions in ∼200,000 km2 of central Amazon lowland (0–4° Lat. S, 60–64° Long. W). The geographic distribution of flooded wetland was learly evident on the mosaic due to the unique characteristics of L-band radar. Two distinct linear boundaries were encountered limiting the northern distribution of wetlands, one north of the Negro river main channel and west of the Branco river, oriented WNW–ESE, and one south of the Negro main channel and east of the Branco, oriented NW–SE. The orientations and positions of these boundaries were consistent with the prevailing tectonic fracture pattern in the region. Geophysical, pedological and geomorphological data supported the hypothesis that these boundaries are tectonically controlled. The ecological, economic and biogeochemical implications of the observed wetland distribution were considered. The distributions of wetland-dependent biota were expected to be severely limited north of the Negro main channel. Fish production, wetland timber yields and methane emissions were also predicted to be exceptionally low in this region.
URI: http://repositorio.inpa.gov.br/handle/123/5897
ISSN: 0101-708X
DOI: http://dx.doi.org/10.1016/S1040-6182(00)00021-5
Local de publicação: Brasil
Aparece nas coleções:Coordenação de Dinâmica Ambiental (CDAM)

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