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Improved regional groundwater flow modeling using drainage features: a case study of the central northern karst aquifer system of Puerto Rico (USA)

Hydrogeology journal, 2016-09, Vol.24 (6), p.1463-1478 [Peer Reviewed Journal]

Springer-Verlag Berlin Heidelberg 2016 ;ISSN: 1431-2174 ;EISSN: 1435-0157 ;DOI: 10.1007/s10040-016-1419-6 ;PMID: 30416370

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Title:
Improved regional groundwater flow modeling using drainage features: a case study of the central northern karst aquifer system of Puerto Rico (USA)
Author: Ghasemizadeh, Reza ; Yu, Xue ; Butscher, Christoph ; Padilla, Ingrid Y. ; Alshawabkeh, Akram
Subjects: Aquatic Pollution ; Aquifers ; Case studies ; Conduits ; Drainage ; Drains ; Earth and Environmental Science ; Earth Sciences ; Geology ; Geophysics/Geodesy ; Groundwater flow ; Hydraulics ; Hydrogeology ; Hydrology/Water Resources ; Karst ; Networks ; Regions ; Springs ; Waste Water Technology ; Water Management ; Water Pollution Control ; Water Quality/Water Pollution
Is Part Of: Hydrogeology journal, 2016-09, Vol.24 (6), p.1463-1478
Description: In northern Puerto Rico (USA), subsurface conduit networks with unknown characteristics, and surface features such as springs, rivers, lagoons and wetlands, drain the coastal karst aquifers. In this study, drain lines connecting sinkholes and springs are used to improve the developed regional model by simulating the drainage effects of conduit networks. Implemented in an equivalent porous media (EPM) approach, the model with drains is able to roughly reproduce the spring discharge hydrographs in response to rainfall. Hydraulic conductivities are found to be scale dependent and significantly increase with higher test radius, indicating scale dependency of the EPM approach. Similar to other karst regions in the world, hydraulic gradients are steeper where the transmissivity is lower approaching the coastline. This study enhances current understanding of the complex flow patterns in karst aquifers and suggests that using a drainage feature improves modeling results where available data on conduit characteristics are minimal.
Publisher: Berlin/Heidelberg: Springer Berlin Heidelberg
Language: English
Identifier: ISSN: 1431-2174
EISSN: 1435-0157
DOI: 10.1007/s10040-016-1419-6
PMID: 30416370
Source: ProQuest Central

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Improved regional groundwater flow modeling using drainage features: a case study of the central northern karst aquifer system of Puerto Rico (USA)

Springer-Verlag Berlin Heidelberg 2016 ;ISSN: 1431-2174 ;EISSN: 1435-0157 ;DOI: 10.1007/s10040-016-1419-6 ;PMID: 30416370

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