GIS mapping of regional probabilistic groundwater potential in the area of Pohang City, Korea SCIE SCOPUS

Cited 199 time in WEB OF SCIENCE Cited 202 time in Scopus
Title
GIS mapping of regional probabilistic groundwater potential in the area of Pohang City, Korea
Author(s)
Oh, Hyun-Joo; Kim, Yong-Sung; Choi, Jong-Kuk; Park, Eungyu; Lee, Saro
KIOST Author(s)
Choi, Jong Kuk(최종국)
Publication Year
2011-03-18
Abstract
This study analyzed the relationships between groundwater specific capacity (SPC) and its related hydrological factors to assess the sensitivity of each factor and map the regional groundwater potential for the area of Pohang City, Korea, using a geographic information system (GIS) and a probability model. All related factors including topography, geology, lineament, and soil data were collected and entered into a spatial database. SPC data were collected from well locations, and SPC values of >= 6.25 m(3)/d/m, corresponding to a yield of 500 m(3)/d, were input to a spatial database. SPC data were then randomly selected in a 66/34 ratio to train and validate the model. A frequency-ratio model and sensitivity analysis were used to determine the relationships between SPC and its related factors and the importance of SPC-related factors. Sensitivity analysis allows for comparison of the combined effects of all factors except for one. The validation of the groundwater potential map overlain by all factors showed 77.78% accuracy. In the sensitivity analysis, the best accuracy was obtained by omitting ground elevation data (78.64%), and the worst accuracy resulted when soil texture was not included (76.64%). The results show that soil texture had the greatest effect on the groundwater potential and ground elevation had the least effect. Such information and the maps generated from it can be applied to groundwater management and groundwater resource exploration. (c) 2010 Elsevier B.V. All rights reserved.
ISSN
0022-1694
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3907
DOI
10.1016/j.jhydrol.2010.12.027
Bibliographic Citation
JOURNAL OF HYDROLOGY, v.399, no.3-4, pp.158 - 172, 2011
Publisher
ELSEVIER
Subject
GEOGRAPHIC INFORMATION-SYSTEMS; HARD-ROCK; RECHARGE; IDENTIFICATION; ZONES; EXPLORATION; INTEGRATION; LINEAMENTS; PROSPECTS; TERRAIN
Keywords
Groundwater potential; Groundwater exploration; Frequency ratio; Sensitivity analysis; GIS; Korea
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER
Related Researcher
Research Interests

GOCI-based PAR,Satellite-based Water Quality,Ocean color based Ecological Environment,GOCI 기반 PAR,위성활용 해수표층 수질,해색위성 기반 해수 생태환경

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