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- Title
동해에서 지구 물리 이종방법간의 결합시스템을 활용한 침선 수색의 효용성 연구
- Authors
유이선; 장남도; 정섬규; 이승훈; 이철구; 김선효; 조진형
- Abstract
When the 60-ton-class patrol boat '72' of the Korea Coast Guard (KCG) was on duty and she accidentally collided with another patrol boat ('207', 200-ton-class) and sank. A month-long search found a small amount of lost items, but neither the crew nor the ship was found. For the first time in 39 years since the accident, the Korea Institute of Ocean Science and Technology (KIOST) searched the boat 72 using the latest integrated geophysical techniques. A number of sonar images presumed to be of a sunken ship was acquired using a combined system of side scan sonar and marine magnetometer, operated at an altitude of approximately 30 m from the seabed. At the same time, a strong magnetic anomaly (100 nT) was detected in one place, indicating the presence of an iron ship. A video survey using a remotely operated underwater vehicle (ROV) confirmed the presence of a shielding part of a personal firearm at the stern of the sunken vessel. Based on these comprehensive data, the sunken vessel discovered in this exploration was assumed to be '72'. This result is meaningful in terms of future ocean exploration and underwater archaeology, as the integrated system of various geophysical methods is an efficient means of identifying objects present in the water.
- Subjects
REMOTE submersibles; PATROL boats; UNDERWATER exploration; SONAR imaging; UNDERWATER archaeology; ELECTRONIC navigation; SUBMERSIBLES
- Publication
Ocean & Polar Research, 2022, Vol 44, Issue 4, p355
- ISSN
1598-141X
- Publication type
Article
- DOI
10.4217/OPR.2022024