Data/hora: 14/06/2024 05:20:07

Biblioteca(s): | Embrapa Cerrados.
Data corrente: | 02/04/2002
Data da última atualização: | 02/04/2002
Autoria: | SANO, E. E.; JIAGUO QI; HUETE, A. R.; MORAN, M. S.
Título: | The use of SAR/TM synergy for estimating soil moisture content over a semi-arid rangeland.
Ano de publicação: | 1998
Fonte/Imprenta: | In: LATINO-AMERICAN SEMINAR ON RADAR REMOTE SENSING, 2., 1998, Santos,SP. Proceedings. [S.l.: s.n], 1998.
Páginas: | p. 175-183.
Idioma: | Inglês
Conteúdo: | The C-band ERS-1 SAR data were combined with the Landsat TM data to improve the soil moisture estimates in a semiarid region. The SAR data were compared with the soil moisture measurements at three conditions: a) Without any correction for soil roughness and vegetation effects; b) corrected for soil roughnesseffects; and c) corrected for both soil roughness and vegetation effects. The soil roughness effects were taken into account by using a dry season SAR image. The vegetation influence was considered by using na empirical relationship between SAR and leaf area index data, the latter being derived from TM images. Results indicated that the contribution of soil roughness and vegetation in the radar backscatter were significant and they must be taken into account to accurate soil moisture estimations.
Palavras-Chave: | Regiao semi-arida.
Thesagro: | Sensoriamento Remoto; Umidade do Solo.
Thesaurus Nal: | remote sensing; semiarid zones; soil water content.
Categoria do assunto: | --
Registro original: | Embrapa Cerrados (CPAC)
Exemplares: | CPAC - (21009-1) - UPC - PL - -- - CRI5746 -  - CRI5746 - DIS