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

다중빔음향측심 자료분석에 의한 한국 연안 사퇴의 해역별 지형 특성

SEUNG-GYUN BAEK1
,
YOUNG-KYO SEO2*
,
JA-HUN JUNG3
,
YOUNG-YUN LEE4
,
EUN-IL LEE5
,
DO-SEONG BYUN6
,
HWA-YOUNG LEE7
백 승균1
,
서 영교2*
,
정 자헌3
,
이 영윤4
,
이 은일5
,
변 도성6
,
이 화영7
1Director of Research Institute, Gematek Co. Ltd., 1108 Haeun-daero, Haeundae-gu, Busan 48071, Korea
2President, Gematek Co. Ltd., 1108 Haeun-daero, Haeundae-gu, Busan 48071, Korea
3Vice President, Gematek Co. Ltd., 1108 Haeun-daero, Haeundae-gu, Busan 48071, Korea
4Senior Researcher, Gematek Co. Ltd., 1108 Haeun-daero, Haeundae-gu, Busan 48071, Korea
5Director, Ocean Research Division, Korea Hydrographic and Oceanographic Agency, Busan 49111, Korea
6Senior Researcher, Ocean Research Division, Korea Hydrographic and Oceanographic Agency, Busan 49111, Korea
7Researcher, Ocean Research Division, Korea Hydrographic and Oceanographic Agency, Busan 49111, Korea
1지마텍(주) 연구소장
2지마텍(주) 대표
3지마텍(주) 부사장
4지마텍(주) 선임연구원
5국립해양조사원 해양과학조사연구실 실장
6국립해양조사원 해양과학조사연구실 연구관
7국립해양조사원 해양과학조사연구실 연구사
*Corresponding Author
28 February 2022. pp. 33-47
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Abstract

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.

Keywords
Sand ridge
Regional topographic characteristics
Multibeam echo sounder data
DEM (Digital Elevation Model)
TPI (Topographic Position Index)

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.

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Information
  • Publisher :The Korean Society of Oceanography
  • Publisher(Ko) :한국해양학회
  • Journal Title :The Sea Journal of the Korean Society of Oceanography
  • Journal Title(Ko) :한국해양학회지 바다
  • Volume : 27
  • No :1
  • Pages :33-47
  • Received Date : 2021-12-15
  • Revised Date : 2022-02-11
  • Accepted Date : 2022-02-16
  • DOI :https://doi.org/10.7850/jkso.2022.27.1.033
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