Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Foraminiferal Characteristics in Mud Deposits of the Southeastern Margin of Korea

한국 남동 대륙주변부 니질대 표층퇴적물의 유공충 특성

  • 우한준 (한국해양연구원 해양환경연구본부) ;
  • 최재웅 (한국해양연구원 해양환경연구본부)
  • Published : 2006.06.30
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Abstract

Six surface sediments from two offshore transects of Ulsan and Gampo, on the southeastern margin of Korea were taken for sediment and foraminiferal analyses. Sedimentary processes are dominated by reworking and resedimentation from storms in the area off Ulsan and hemipelagic suspension settling in the area off Gampo. Eighty-four foraminiferal species were identified in total assemblages, including 33species of living populations and 9 species of planktonic foraminifera. The characteristics of foraminifera showed differences of offshore environments between Ulsan and Gampo. The number of living species, species diversity and equitability in Gampo offshore area had higher values than those in Ulsan offshore area. However, planktonic/benthic(P/B) ratio showed higher in the Ulsan offshore area. The species diversity indices and P/B ratio indicated that environmental stability and surface-ocean productivity in the Gampo offshore area were relatively higher than the Ulsan offshore area. The difference of species compositions is useful for interpreting the paleoenvironments in mud deposits of the southeastern margin of Korea.

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  2. Vertical Variations of Benthic Foraminiferal Assemblages in Core Sediments on Yeoja Bay, Southern Coast of Korea: Implications for Late Holocene Sea-Level Change vol.30, pp.4, 2009, https://doi.org/10.5467/JKESS.2009.30.4.409