کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4579615 1630118 2008 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Floodplain hydrology in an Amazon floodplain lake (Lago Grande de Curuaí)
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Floodplain hydrology in an Amazon floodplain lake (Lago Grande de Curuaí)
چکیده انگلیسی

SummaryThe floodplains of the Amazon basin influence the hydrology and fluxes of suspended solids and solutes on multiple scales. Our study focused on the floodplain of Lago Grande de Curuaí (Óbidos, Brazil), a 4000 km2 segment of floodplain and local upland catchment representative of the lower Amazon. Based on in situ and satellite data acquired from 1997 to 2003, we calculated the exchanges of water between the floodplain and the river and determined the temporal dynamics of flooded area water derived from river flooding, rainfall, runoff, and exchange with groundwater annually for six years. The Amazon River dominated the inputs of water to the flooded area year-round, accounting about 77% of the annual total inputs; rainfall and runoff accounted for about 9% and 10%, respectively, while seepage from the groundwater system accounted for 4%. The hydrologic residence time of the lake was about three months, and the floodplain made a net contribution of water to the river. The exported volume (net balance between water input and losses) varied between 4.2 and 7.3 km3 depending on the year and represented about 0.75 times the maximal storage reached each year.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hydrology - Volume 349, Issues 1–2, 30 January 2008, Pages 18–30
نویسندگان
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