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Case Study of the Shallow Seismic Refraction Survey using Wave Glider

웨이브글라이더를 이용한 천해저 탄성파 굴절법 탐사 사례

  • Kim, Young-Jun (Petroleum and Marine Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Cheong, Snons (Petroleum and Marine Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Koo, Nam-Hyung (Petroleum and Marine Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Chun, Jong-Hwa (Petroleum and Marine Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Kim, Jeong-Ki (Petroleum and Marine Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Hwang, Kyu-Duk (Petroleum and Marine Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Lee, Ho-Young (Petroleum and Marine Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Heo, Sin (OCAEATECH Co.) ;
  • Moon, Ki-Don (OCAEATECH Co.) ;
  • Jeong, Cheol-Hun (OCAEATECH Co.) ;
  • Hong, Sung-Du (OCAEATECH Co.)
  • 김영준 (한국지질자원연구원 석유해저연구본부) ;
  • 정순홍 (한국지질자원연구원 석유해저연구본부) ;
  • 구남형 (한국지질자원연구원 석유해저연구본부) ;
  • 천종화 (한국지질자원연구원 석유해저연구본부) ;
  • 김정기 (한국지질자원연구원 석유해저연구본부) ;
  • 황규덕 (한국지질자원연구원 석유해저연구본부) ;
  • 이호영 (한국지질자원연구원 석유해저연구본부) ;
  • 허신 (오션테크(주) 기술지원부) ;
  • 문기돈 (오션테크(주) 기술지원부) ;
  • 정철훈 (오션테크(주) 기술지원부) ;
  • 홍성두 (오션테크(주) 기술지원부)
  • Received : 2016.11.16
  • Accepted : 2017.02.20
  • Published : 2017.02.28

Abstract

The applicability of refraction survey has been tested using a wave glider widely used in long-term ocean observations around the world. To record seismic refractions, a single channel streamer with metal weight and a seismic recording system were mounted on the wave glider. We used GPS precise time synchronization signal and radio frequency (RF) communication to synchronize shot and recorder triggers and to control acquired data quality in real time. When the wave glider is positioned close to the set point, a 2,000 J sparker is exploded along the designed track at 2 second intervals. Through the test survey, we were able to successfully acquire refractions from the subsurface.

전세계적으로 장기 해양 관측에 많이 활용되고 있는 웨이브글라이더를 이용하여 천해저 굴절법 탐사의 적용가능성을 시험하였다. 굴절파 기록을 위해 웨이브글라이더에 무게 추가 달린 단일채널 스트리머와 탄성파를 기록하는 상용 소프트웨어를 탑재하였다. GPS 정밀 시간동기 신호와 RF(radio frequency) 통신을 이용하여 트리거 동기화 및 실시간 자료품질 관리를 수행하였다. 웨이브글라이더가 설정 지점에 위치하게 되면, 설계된 측선을 따라 2,000 J 용량의 스파커를 2초 간격으로 발파하면서 탐사하였다. 첫 시험탐사를 통해 성공적으로 해저 천부지층 탄성파 굴절파를 취득할 수 있었다.

Keywords

Acknowledgement

Grant : 고성능 석유 해저 탄성파탐사 자료처리 및 다성분 탐사기술 개발

Supported by : 한국지질자원연구원

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