Abstract
The classified map of geomorphic surfaces is the most basic data for the geomorphological research. Up to recent days, the traditional methods extracting specific geomorphic surfaces are accomplished by analyzing the aerial photographs and topographical maps, and field works. Also it needs a lot of time and expertness. Furthermore it is difficult to gain the aerial photographs in Korea. Since digital maps in Korean Peninsula are almost completed recently, we tried to extract specific surfaces by analyzing the characteristics of marine terraces based on the level of paleoshoreline and slope analysis on the terrace surface using GIS. However, research used GIS was hardly found up to date, therefore many problems are not be solved yet. The aim of this study is to develop the more efficient and objective method for the extraction and classification of specific geomorphic surfaces by using GIS in Gampo-eup, Gyeongju city, Southeastem Coast in Korea, where a lot of traditional research has already accomplished. For this aim, we have designed the process of extracting specific geomorphic surfaces, chosen the factors that was Gyeongiu city, Southeastem Coast in Korea, where a lot of traditional research has already accomplished. For this aim, we have designed the process of extracting specific geomorphic surfaces, chosen the factors that was suitable for classification of specific geomorphic surface, and presented method of setting up optimum criteria of extraction. As last, effectiveness and problems of these methods were investigated through conincidence rate and error rate.
지형면 분류도는 지형학 연구에 있어서 가장 기본적인 자료이다 최근가지 이루어지고 있는 항공사진, 지형도 및 현지조사에 의한 지형면 분류 방법은 많은 시간과 높은 숙련도를 요구하며, 항공사진 획득에도 어려움이 있다. 현재 우리나라는 수치지도가 거의 완성되었으므로. GIS를 이용하여 해안단구 지형이 갖는 해발고도와 경사도의 특성을 정량적으로 분석하면, 적합한 지형면을 찾아낼 수 있다. 본 연구에서는 이미 전통적인 방법에 의해 해안단구 연구가 다수 이루어진 한국 남동해안 경주시 감포읍 지역에서, GIS를 이용하여 보다 효율적이고 객관적인 해안단구 지형면 분류 기법을 제시하였다. 이를 위하여 해안단구 지형면 분류 과정을 설계하였으며, 지형면 분류에 적합한 분류요인을 선정하고, 최적분류기준을 추출하여 지형면을 분류한 후, 부합을 및 오류율을 통하여 이러한 방법에 대한 효용성과 문제점을 검토하였다.
