Utilization of Radarsat in integrated catchment management

被引：0

作者：

Galarneau, M ^{[1
]}

Leconte, R ^{[1
]}

Brissette, FS ^{[1
]}

Pultz, TJ ^{[1
]}

Rousselle, J ^{[1
]}

机构：

[1] Univ Quebec, Ecole Technol Super, ARDEM Res Grp, Montreal, PQ H3C 1K3, Canada

来源：

REMOTE SENSING AND HYDROLOGY 2000 | 2001年 / 267期

关键词：

basin scale; hydrological modelling; Quebec; Canada; Radarsat; SAR; soil moisture; soil roughness;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper discusses the development and validation of an algorithm for extracting soil moisture data from Radarsat images in a form suitable for hydrological simulations and forecasts. A total of seven ascending Radarsat images of the Chateauguay River basin were acquired approximately at 18:00 h local time, between 2 May and 10 November 1998. Soil moisture information was extracted at the field level from Radarsat C-Band SAR using a semi-empirical radar backscatter model. Soil surface roughness was evaluated at the basin scale using a test image and assuming known soil moisture conditions. Soil moisture maps were then produced at the basin scale. These maps are then extended to the root zone using correlation functions obtained from the Richards equation, thus producing basin-scale soil moisture maps suitable for hydrological modelling purposes.

引用

页码：321 / 326

页数：4

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