한국해양학회지:바다 (The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY)

  • 제27권1호
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  • Pages.33-47
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  • 2022
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  • 1226-2978(pISSN)
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  • 2671-8820(eISSN)
한국해양학회 (The Korean Society of Oceanography)
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다중빔음향측심 자료분석에 의한 한국 연안 사퇴의 해역별 지형 특성

Regional Topographic Characteristics of Sand Ridge in Korean Coastal Waters on the Analysis of Multibeam Echo Sounder Data

  • 투고 : 2021.12.15
  • 심사 : 2022.02.16
  • 발행 : 2022.02.28
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초록

다중빔측심자료를 이용하여 우리나라 전 연안 해역에 발달한 해저 사퇴의 분포를 확인하고, 해역별 지형 특성을 파악하고자 하였다. 이를 위하여 국립해양조사원의 황해와 대한해협 수심자료를 이용하여 DEM 자료를 작성한 후 TPI 기법을 적용하여 사퇴의 경계를 정밀하게 추출하였다. 그 결과 우리 해역에 분포하는 총 200개의 사퇴를 확인하였으며, 그들의 규모(폭, 길이, 둘레, 면적, 높이)와 형태(폭/길이 비율, 높이/폭 비율, 선형·분기형, 노출·비노출형)에 대한 통계분석을 실시하여 사퇴의 지역별 특성을 분석하였다. 이러한 연구 결과는 연안 항해안전은 물론 해양지명 선정 지원, 해사골재자원 파악, 수산자원 관리 등에 활용될 수 있다.

In this study, distribution of submarine sand ridges in the coastal waters of Korea was surveyed using multibeam echo sounder data, and the topographic characteristics of each region were identified. For this purpose, the DEM (Digital Elevation Model) data was generated using depth data obtained from the Yellow Sea and the South Sea by Korea Hydrographic and Oceanographic Agency, and then applied the TPI (Topographic Position Index) technique to precisely extract the boundary of the sand ridges. As a result, a total of 200 sand ridges distributed in the coastal waters were identified, and the characteristics of each region of the sedimentary sediments were analyzed by performing statistical analysis on the scale (width, length, perimeter, area, height) and shape (width/length ratio, height/width ratio, linear·branch type, exposure·non-exposure type). The results of this study are expected to be used not only for coastal navigational safety, but also for marine naming support, marine aggregate resource identification, and fisheries resource management.

키워드

과제정보

본 연구는 2018~2021년 해양수산부 국립해양조사원(Korea Hydrographic and Oceanographic Agency)의 '해저특이지형(해저사퇴) 분석 연구' 및 '연안 해저특이지형(태안반도 북부해역) 변화 연구' 과제의 지원으로 수행되었으며, 해저사퇴 분포도는 국립해양조사원 "개방해(www.khoa.go.kr/oceanmap)"와 해양수산부 "해양수산 빅데이터플랫폼(www.vadahub.go.kr)"을 통해 제공되고 있음.

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