한국지하수토양환경학회지:지하수토양환경 (Journal of Soil and Groundwater Environment)

  • 제9권3호
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  • Pages.56-61
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  • 2004
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  • 1598-6438(pISSN)
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  • 2287-8831(eISSN)
한국지하수토양환경학회 (Korean Society of Soil and Groundwater Environment)
권호 표지

DTM으로부터 지형변수의 추출 및 분석: 제주도 사례연구

Extraction and Analysis of Topographic Variables from DTM: A Case Study in Jeju Island

  • 발행 : 2004.09.01
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초록

강수현상에 영향을 주는 지형변수들을 고도(ELEV), 경사(SLOPE), 바다까지의 거리(SEA), 방해물(OBST), 방벽(BAR), 굴곡도(SHIELD)로 구분하여 해상도별로 추출하고 분석하였다. 해상도는 50 m DTM (Digital Terrain Model)을 기본으로 하여 100m, 200m, 400m, 600m, 800m, 그리고 1,000m로 분석하였다. 이때 해상도 분석은 TOVA (Topographic Variables Extraction Program)를 이용하였다. 제주 기상관측소를 사례로 지형변수를 분석한 결과 전반적으로 해상도에 따른 값의 변화는 8개의 주방위선에 따른 변화보다 적지만 특히 SHIELD 변수값과 해상도 600m의 경우에는 의미 있게 나타났다.

The topographic variables, which influence the precipitation phenomena, are classified by elevation (ELEV), slope (SLOPE), distance to sea (SEA), obstruction (OBST), barrier (BAR), roughness (SHIELD), extracted and analysed according to resolutions. This study is performed through 100 m, 200 m, 400 m, 600 m, 800 m and 1,000 m based on 50 m DTM using TOVA (Topographic Variables Extraction Program). The result of a case study on Jeju weather station says that the variance according to resolution is generally less than that according to cardinal direction, but particularly SHIELD values and some cases for 600m resolution have a significant results.

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참고문헌

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