Data/hora: 03/06/2024 10:54:04

Provedor de dados: | Revista Brasileira de Ciência do Solo
País: | Brazil
Título: | Estimation of surface roughness in a semiarid region from C-band ERS-1 synthetic aperture radar data
Autores: | Sano,E. E.; Huete,A. R.; Moran,M. S.
Data: | 1999-12-01
Ano: | 1999
Palavras-chave: | Surface roughness; Radar remote sensing; Microwave.
Resumo: | In this study, we investigated the feasibility of using the C-band European Remote Sensing Satellite (ERS-1) synthetic aperture radar (SAR) data to estimate surface soil roughness in a semiarid rangeland. Radar backscattering coefficients were extracted from a dry and a wet season SAR image and were compared with 47 in situ soil roughness measurements obtained in the rocky soils of the Walnut Gulch Experimental Watershed, southeastern Arizona, USA. Both the dry and the wet season SAR data showed exponential relationships with root mean square (RMS) height measurements. The dry C-band ERS-1 SAR data were strongly correlated (R² = 0.80), while the wet season SAR data have somewhat higher secondary variation (R² = 0.59). This lower correlation was probably provoked by the stronger influence of soil moisture, which may not be negligible in the wet season SAR data. We concluded that the single configuration C-band SAR data is useful to estimate surface roughness of rocky soils in a semiarid rangeland.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06831999000400017
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/S0100-06831999000400017
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.23 n.4 1999
Fonte: | info:eu-repo/semantics/openAccess