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Study on the Geographic and Geologic Centers in South Korea Using GIS  

Cheong, Won-Seok (Department of Geological and Environmental Science, Chungbuk National University)
Hwang, Jae-Hong (Korea Institute of Geoscience and mineral Resources)
Kang, Yong-Sock (Department of Information Industry Engineering, Chungbuk National University)
Na, Ki-Chang (Department of Geological and Environmental Science, Chungbuk National University)
Publication Information
Journal of the Korean earth science society / v.27, no.4, 2006 , pp. 416-424 More about this Journal
Abstract
Because there is no generally accepted definition of a geographic center and no completely satisfactory method to determine one, there may be as many geographic centers of a country as there are many definitions. The geographic center of an area may be defined as the center of gravity on a surface, or that point on which the surface of an area would balance if it were a plane of uniform thickness. This research uses geographic information system (GIS) analysis and there are places where it defines the geographical and the geological centers in the inland of South Korea. To compute the geo-centers in South Korea: 1) firstly, we collected existing reaserch data related to digital map data. 2)Secondly, we analyzed a geological center and data collection examples of Korea and other nations-the Europe and America. 3) Thirdly, we carried out numerous processes to build a geodatabase, short for geograhic database, so that GIS analysis and the constructed geodatabase is covered within the inland in South Korea. Where geodatabase is a kind of spatial database. 4) Fourthly, in order to determine the geographical center, we supposed that the condition of continental surface is the plane of homogeneous or irregular density. 5) Consequently, we chose a few resonable conditions and produced a variety of geographical centers that is geometric and gravitational in South Korea. As a result of the analysis, center points are massed to southern part of Chungbuk province, Korea.
Keywords
geographic center; inland in South Korea; GIS;
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