期刊论文详细信息
Engenharia Agrícola
Methodology for spatialization of intense rainfall equation parameters
Alexandre C. Xavier2  Roberto A. Cecílio1  Fernando F. Pruski1  Julião S. De S. Lima1 
[1] ,UFES Departamento de Engenharia Rural Alegre ES
关键词: intensity-duration-frequency equation;    geostatistics;    hydrology;    equação intensidade-duração-frequência;    geoestatística;    hidrologia;   
DOI  :  10.1590/S0100-69162014000300012
来源: SciELO
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【 摘 要 】

The aim of this study was to generate maps of intense rainfall equation parameters using interpolated maximum intense rainfall data. The study area comprised Espírito Santo State, Brazil. A total of 59 intense rainfall equations were used to interpolate maximum intense rainfall, with a 1 x 1 km spatial resolution. Maximum intense rainfall was interpolated considering recurrence of 2; 5; 10; 20; 50 and 100 years, and duration of 10; 20; 30; 40; 50; 60; 120; 240; 360; 420; 660; 720; 900; 1,140; 1,380 and 1,440 minutes, resulting in 96 maps of maximum intense rainfall. The used interpolators were inverse distance weighting and ordinary kriging, for which significance level (p-value) and coefficient of determination (R²) were evaluated for the cross-validation data, choosing the method that presented better R² to generate maps. Finally, maps of maximum intense precipitation were used to estimate, cell by cell, the intense rainfall equation parameters. In comparison with literature data, the mean percentage error of estimated intense rainfall equations was 13.8%. Maps of spatialized parameters, obtained in this study, are of simple use; once they are georeferenced, they may be imported into any geographic information system to be used for a specific area of interest.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License

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