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Analysis of Relationships Between Topography/Geology and Groundwater Yield Properties at Pohang using GIS  

Lee, Sa-Ro (Geoscience Information Center, Korea Institute of Geoscience & Mineral Resources(KIGAM))
Kim, Yong-Sung (Department of Geology, Kyungpook National University, Yooshin Engineering Corporation)
Kim, Nam-Jin (Department of Geology, Kyungpook National University, Yooshin Engineering Corporation)
Ahn, Kyoung-Hwan (Groundwater Investigation team, Korea Water Resources Corporation)
Publication Information
Economic and Environmental Geology / v.41, no.1, 2008 , pp. 115-131 More about this Journal
Abstract
The aim of this study is to analyze relationships between topography/geology which affects physically groundwater regime and groundwater yield properties in Pohang City using Geographic Information System (GIS). For the purpose, topographic factors such as ground elevation, ground elevation difference, ground slope, and ground regional slope, and hydrogeologic unit, and groundwater yield properties factors such as transmissivity, specific capacity, and well yield, were constructed to spatial data base. Then the relationships between topography, geology and groundwater yield properties were analyzed quantitatively using GIS overlay technique. As the results, ground-water yield of unconsolidated sediments and porous volcanic rocks is the highest among the hydrogeologic units of study area, and clastic sedimentary rock is the lowest. There are positive relationship between the elevation and elevation difference and the groundwater yield properties and negative relationship between the topographic slope and the groundwater yield properties.
Keywords
Groundwater; Specific capacity; Transmissivity; GIS; Pohang City;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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