کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4435132 1310546 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simulating the effects of a beaver dam on regional groundwater flow through a wetland
ترجمه فارسی عنوان
شبیه سازی اثرات سد ببر در جریان آب های زیرزمینی منطقه ای از طریق یک تالاب
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی

Study FocusThis research examines a wetland environment before and after the construction of a beaver dam to determine the hydrologic impacts on regional groundwater flow and quantify changes to the capture zone of a wetland pond. Increased hydraulic head behind a newly built beaver dam can cause shifts in the capture zone of a wetland pond. Changes in groundwater flux, and the extent of both the capture and discharge zones of this wetland were examined with the use of a groundwater flow model, created using MODFLOW.New hydrological insights for the regionThe construction of a beaver dam resulted in minimal changes to regional groundwater flow paths at this site, which is attributed to a clay unit underlying the peat, disconnecting this wetland from regional groundwater flow. However, groundwater discharge from the wetland pond increased by 90%. Simulating a scenario with the numerical model in which the wetland is connected to regional groundwater flow results in a much larger impact on flow paths. In the absence of the clay layer, the simulated construction of a beaver dam causes a 70% increase in groundwater discharge from the wetland pond and increases the surface area of both the capture zone and the discharge zone by 30% and 80%, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hydrology: Regional Studies - Volume 4, Part B, September 2015, Pages 675–685
نویسندگان
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