The Korean Journal of Quaternary Research (한국제4기학회지)

Korea Association For Quaternary Research (한국제4기학회)
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Characteristics of Surface Sediments and Accumulation before and after the Typhoon Kompasu in the Gochang Gwangseungri Sandy Intertidal Flat, Korea

태풍 곤파스 전·후 고창 광승리 사질 조간대의 표층 퇴적물과 집적 특성

  • Sol Ip Kang (Division of Science Education and Institute of Science Education, Jeonbuk National University) ;
  • Woo Hun Ryang (Division of Science Education and Institute of Science Education, Jeonbuk National University)
  • 강솔잎 (전북대학교 과학교육학부, 과학교육연구소) ;
  • 양우헌 (전북대학교 과학교육학부, 과학교육연구소)
  • Received : 2024.06.25
  • Accepted : 2024.07.10
  • Published : 2024.06.30
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Abstract

Typhoon effects on macrotide open-coast intertidal sediments were investigated in the Gochang Gwangseungri sandy intertidal flat on the Korean western coast. Variations in the surface sediment texture, accumulation, and sedimentary facies were observed before and after the Typhoon Kompasu in 2010. The typhoon Kompasu landed on the southwestern coast of the Korean Peninsula and passed inland between September 1st and 2nd, 2010, respectively. Surface sediments and their accumulation before and after the typhoon were sampled and measured at intervals of 30 m along a survey line on the Gwangseungri intertidal flat. The intertidal areas were divided into high, middle, and lower tidal zones based on the mean high-wate level, mean sea level, and mean low-water level, respectively. The surface sediments of each tidal zone show rare variations in grain size and sorting of sediment texture before and after the typhoon Kompasu, whereas negative skewness values increased in the middle and lower tidal zones after the typhoon rather than before the typhoon. Surface accumulation represents deposition in the upper and middle tidal zone and erosion in the lower tidal zones after the typhoon. The accumulation decreased from the high to the lower tidal zones.

대조차 개방형 조간대 퇴적물에 대한 태풍 효과를 한국 서해안 고창 광승리 조간대에서 연구하였다. 2010년 태풍 곤파스 전·후에 나타난 표층 퇴적물 조직, 집적, 퇴적상 변화를 관측하였다. 태풍 곤파스는 2010년 9월 1일과 2일 사이에 한반도 남서부 연안에 상륙하여 내륙을 관통하였다. 태풍 곤파스 전·후에 고창 광승리 조간대의 측선을 따라 30m 간격으로 표층 퇴적물을 채취하고 집적 특성을 기술하였다. 광승리 조간대를 평균고조면, 평균해수면, 평균저조면을 기준으로 고조대, 중조대, 저조대로 세분하여 연구하였다. 태풍 곤파스 전·후 각 조간대의 표층 퇴적물은 퇴적물 조직의 입도와 분급에서 거의 변화를 보이지 않은 반면, 왜도는 중조대와 저조대에서 태풍 전보다 태풍 후 음의 왜도 값이 증가하였다. 태풍 곤파스 후에 고조대와 중조대는 퇴적되었고 저조대는 침식되었다. 고조대에서 저조대 방향으로 갈수록 집적이 감소하였다.

Keywords

Acknowledgement

논문 심사와 함께 논문의 부족한 부분을 수정해 주신 익명의 심사위원께 감사드립니다. 함께 토론을 해 주신 전북대학교 윤재린님에게 감사드립니다. 입도분석 기기 사용과 실험에 도움을 주신 한국지질자원연구원 해저지질실에 감사드립니다. 이 논문은 한국과학기술정보통신부 한국연구재단의 연구과제(NRF-2022R1F1A1063126)와 해양수산부 한국해양과학기술진흥원의 연구과제(PJT200538)로 수행된 연구 결과입니다.

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