Georeferenced database generation with the purpose of hydrologic molding in reservoirs of the hydrographic basin of Jaguaribe river in the state of Ceará, Brazil

Engenharia Agrícola

Raimundo A. De O. Leão²  Antônio A. Soares¹  Adunias Dos S. Teixeira¹  Demetrius D. Da Silva¹ 

[1] ,Universidade Federal do Ceará Departamento de Engenharia Agrícola

关键词: geoprocessing;    GIS;    hydrologic models;    curve number;    Jaguaribe River;    semiarid;    geoprocessamento;    SIG;    modelos hidrológicos;    número da curva;    Rio Jaguaribe;    semiárido;   

DOI  :  10.1590/S0100-69162013000200017

来源: SciELO

【 摘 要 】

The edafoclimatic conditions of the Brazilian semiarid region favor the water loss by surface runoff. The state of Ceará, almost completely covered by semiarid, has developed public policies for the construction of dams in order to attend the varied water demand. Several hydrological models were developed to support decisive processes in the complex management of reservoirs. This study aimed to establish a methodology for obtaining a georeferenced database suitable for use as input data in hydrological modeling in the semiarid of Ceará. It was used images of Landsat satellite and SRTM Mission, and soil maps of the state of Ceará. The Landsat images allowed the determination of the land cover and the SRTM Mission images, the automatic delineation of hydrographic basins. The soil type was obtained through the soil map. The database was obtained for Jaguaribe River hydrographic basin, in the state of Ceará, and is applicable to hydrological modeling based on the Curve Number method for estimating the surface runoff.

【 授权许可】

CC BY   
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