Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Comparison of EM 120 Multibeam Echo Sounding Data with SeaBeam 2000 Data Acquired at KODOS(Korea Deep Ocean Study) Area

한국 심해연구지역에서 획득된 EM 120과 SeaBeam 2000의 자료 비교

  • 이근창 (한국해양연구원 해양자원연구본부) ;
  • 김현섭 (한국해양연구원 해양자원연구본부) ;
  • 고영탁 (한국해양연구원 해양자원연구본부) ;
  • 정미숙 (한국해양연구원 해양자원연구본부) ;
  • 함동진 (한국해양연구원 해양자원연구본부) ;
  • 김종욱 (한국해양연구원 해양자원연구본부)
  • Published : 2006.12.31
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Abstract

The EM 120, a newly installed multibeam echo sounder on RM Onnuri, has several advantages over the previously installed SeaBeam 2000 in performance and thus data quality. The EM 120 system provides a bottom topographic map with high resolution by (1) increasing the number of beams, (2) increasing the across track swath range, (3) measuring the more accurate sound velocity within the water column, and (4) improving stabilization for pitching, rolling, and yawing of the ship. This study compares EM 120 and SeaBeam 2000 echo sounders in terms of the data quality from the same survey area in the Clarion-Clipperton Zone, NE Pacific. Our result shows that the EM 120 provides more precise topographic data than the SeaBeam 2000. Although overall trends of data, such as topographic direction and relief, are similar for both echo sounders, the water depths measured by the EM 120 are shallower than that of SeaBeam 2000 by 80 to 90 meters.

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References

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