کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6410427 1332881 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Identification of recharge zones in the Lower Mississippi River alluvial aquifer using high-resolution precipitation estimates
ترجمه فارسی عنوان
شناسایی مناطق شارژ در آبخوان آبرفتی رودخانه میسسیسیپی با استفاده از تخمین های بارش با وضوح بالا
کلمات کلیدی
بارش، پایین آبخوان آبرفت رودخانه می سی سی پی، شارژ، تجزیه و تحلیل مولفه اصلی،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی


- Principal component analysis of groundwater and rainfall over Mississippi Delta.
- Recharge sensitive to precipitation in late fall.
- Principal recharge into alluvial aquifer along Tallahatchie River basin.
- Cool-season precipitation can sustain shallow aquifer levels.

SummaryWater resources in the lower Mississippi River alluvial valley play a critical role in agricultural productivity due to the widespread use of irrigation during the growing season. However, the unknown specifics of surface-atmosphere feedbacks in the region, along with diminishing groundwater availability and the non-sustainable trend in irrigation draws from the alluvial aquifer, makes it difficult for water resource managers to make sound decisions for future water sustainability. As a result, it is crucial to identify spatial and temporal associations between local rainfall patterns and groundwater levels to determine the influence of precipitation on regional aquifer recharge. Specifically, it is critical to define the recharge zones of the aquifer so that rainfall distribution can be used to assess potential groundwater recovery. This project addresses the issue of defining areas of recharge in the lower Mississippi River alluvial aquifer (LMRAA) through an assessment of historical precipitation variability using high-resolution radar-derived precipitation estimates. A rotated principal component analysis (RPCA) of both groundwater and precipitation data from October through April is used to define locations where aquifer levels show the greatest variability, with a stepwise regression approach used to define areas where rainfall and groundwater levels show the strongest association. Results show that the greatest recharge through direct rainfall is along the Tallahatchie River basin in the northeastern Mississippi Delta, with recharge along the periphery of the LMRAA likely a result of direct water flux from surface hydrologic features.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hydrology - Volume 531, Part 2, December 2015, Pages 360-369
نویسندگان
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