Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)
- Volume 31 Issue 5
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- Pages.609-621
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- 1998
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- 0374-8111(pISSN)
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- 2287-8815(eISSN)
Physical Properties and Facies of the Sand Ridge Sediment, South Sea of Korea
남해 Sand ridge 퇴적물의 퇴적상과 물리적 특성
- CHON Hee-Jeong (Department of Applied Geololgy, Pukyong National University) ;
- SEO Yong-Kyo (Department of Applied Geololgy, Pukyong National University) ;
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KIM Dae-Choul
(Department of Exploration Engineering, Pukyong National University Korea) ;
- KIM Jeng-Chang (Department of Shipboard Training, Pukyong National University) ;
- KEENE Jock (Division of Geology and Geophysics, School of Geoscience, University of Sydney)
- Published : 1998.09.01
Abstract
Sand ridges in the South Sea of Korea have been investigated to reveal the surface morphology and vortical variation in sediment physical property. Both field and laboratory methods such as high resolution subbottom profiling, side scan sonar, and physical property and sediment textural study on cored sediments were employed. Asymmetric sand waves are found on the ridge, No prominent difference in the sediment was recorded throughout the ridge area. Sediment sorting is generally poor due to interbedded mud. Average compressional wave velocity is 1753 m/sec for the sand dominated core section, Most of cores show two prominent facies: facies A and B. Facies A is defined as modern mud sediment and B is dominated by relict sand. Facies B is characterized by gravel, sand, and shell fragment, It is suggested that the facies B was developed in transgressive environment by tide and sporadic high energy events.
1. 연구지역내 sand ridge들은 10