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Deep Sea Three Components Magnetometer Survey using ROV

ROV를 이용한 심해 삼성분자력탐사 방법연구

  • Kim, Chang-Hwan (East Sea Branch, Korea Ocean Research and Development Institute) ;
  • Park, Chan-Hong (East Sea Branch, Korea Ocean Research and Development Institute)
  • 김창환 (한국해양연구원 동해분원) ;
  • 박찬홍 (한국해양연구원 동해분원)
  • Received : 2011.09.19
  • Accepted : 2011.11.07
  • Published : 2011.11.30

Abstract

We conducted magnetic survey using IBRV (Ice Breaker Research Vessel) ARAON of KORDI (Korea Ocean Research and Development Institute), ROV (Remotely Operated Vehicle) of Oceaneering Co. and three components vector magnetometer, at Apr., 2011 in the western slope of the caldera of TA25 seamount, the Lau Basin, the southwestern Pacific. The depth ranges of the survey area are from about 900 m to 1200 m, below sea level. For the deep sea magnetic survey, we made the nation's first small deep sea three components magnetometer of Korea. The magnetometer sensor and the data logger was attached with the upper part and lower part of ROV, respectively. ROV followed the planning tracks at 25 ~ 30 m above seafloor using the altimeter and USBL (Ultra Short Base Line) of ROV. The three components magnetometer measured the X (North), Y (East) and Z (Vertical) vector components of the magnetic field of the survey area. A motion sensor provided us the data of pitch, roll, yaw of ROV for the motion correction of the magnetic data. The data of the magnetometer sensor and the motion sensor were recorded on a notebook through the optical cable of ROV and the network of ARON. The precision positions of magnetic data were merged by the post-processing of USBL data of ROV. The obtained three components magnetic data are entirely utilized by finding possible hydrothermal vents of the survey area.

Acknowledgement

Supported by : 한국해양연구원

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