Econ. Environ. Geol. 2008; 41(1): 115-131

Published online February 28, 2008

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

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

Saro Lee1*, Yong Sung Kim2, Nam Jin Kim2 and Kyoung Hwan Ahn3

1Geoscience Information Center, Korea Institute of Geoscience & Mineral Resources (KIGAM), 92 Gwahang-no, Yuseong-gu, Daejeon 305-350, Korea
2Department of Geology, Kyungpook National University, 1370 Sankyuk-dong, Buk-gu, Daegu 702-701, Korea, Yooshin Engineering Corporation, 832-40, Yoksam-dong, Gangnam-gu, Seoul 135-936, Korea
3Groundwater Investigation team, Korea Water Resources Corporation, 560 Sintanjin-ro, Daedeok-gu, Daejeon, 306-711, Korea

Correspondence to :

Saro Lee

leesaro@kigam.re.kr

Received: May 7, 2007; Accepted: February 13, 2008

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, groundwater 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

Article

Econ. Environ. Geol. 2008; 41(1): 115-131

Published online February 28, 2008

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

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

Saro Lee1*, Yong Sung Kim2, Nam Jin Kim2 and Kyoung Hwan Ahn3

1Geoscience Information Center, Korea Institute of Geoscience & Mineral Resources (KIGAM), 92 Gwahang-no, Yuseong-gu, Daejeon 305-350, Korea
2Department of Geology, Kyungpook National University, 1370 Sankyuk-dong, Buk-gu, Daegu 702-701, Korea, Yooshin Engineering Corporation, 832-40, Yoksam-dong, Gangnam-gu, Seoul 135-936, Korea
3Groundwater Investigation team, Korea Water Resources Corporation, 560 Sintanjin-ro, Daedeok-gu, Daejeon, 306-711, Korea

Correspondence to:

Saro Lee

leesaro@kigam.re.kr

Received: May 7, 2007; Accepted: February 13, 2008

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, groundwater 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

    KSEEG
    Apr 30, 2024 Vol.57 No.2, pp. 107~280

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