کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4464859 1621839 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Estimation of discharges at river mouth with MODIS image
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات کامپیوتر در علوم زمین
پیش نمایش صفحه اول مقاله
Estimation of discharges at river mouth with MODIS image
چکیده انگلیسی

The transport of the sediment, carried in suspension by water, is central to hydrology and the ecological functioning of river floodplains and deltas. River discharge estimation is useful for demonstrating this information. In this study, we extracted MODIS reflectance values from a pixel near the river mouth after carrying out the simple atmospheric correction method, then applied single regression analysis to reflectance values and the in situ discharge of Naka River in Tokushima prefecture and Monobe River in Kochi prefecture, Japan. MODIS images and in situ data were taken from January through December, 2004. As a result, both in Naka River and Monobe River, robustly positive relationships between the discharges observed in situ and remotely sensed MODIS reflectance data in the region of river mouth were found throughout the year. In addition, we estimated monthly and annual average discharge from the MODIS reflectance with the regression formula. As a result, in situ average discharge was well estimated.


► We extracted MODIS reflectance values from a pixel near the river mouth after carrying out the simple atmospheric correction method.
► There was a strong statistical relationship between discharges observed in situ and MODIS reflectance data in the region of river mouth.
► We estimated monthly average discharge from the MODIS reflectance with the regression formula obtained with discharge and reflectance value.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Applied Earth Observation and Geoinformation - Volume 21, April 2013, Pages 276–281
نویسندگان
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