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[국내논문] 로스해 Iselin Bank에서 규조를 이용한 고해양 환경변화 해석
Analysis of Changes in Paleoenvironment using Diatoms from Iselin Bank in the Ross Sea 원문보기

한국지구과학회지 = Journal of the Korean Earth Science Society, v.42 no.6, 2021년, pp.677 - 687  

박영숙 (전북대학교 자연과학대학 지구환경과학과) ,  김성한 (극지연구소 빙하환경연구본부) ,  이재일 (극지연구소 빙하환경연구본부) ,  유규철 (극지연구소 빙하환경연구본부) ,  이민경 (극지연구소 빙하환경연구본부)

초록
AI-Helper 아이콘AI-Helper

로스해의 Iselin Bank 인근에서 채취한 RS15-GC41코어로부터 규조를 분석한 결과 총 24속 35종의 규조를 감정하였으며, 규조 개체수 농도는 0.2-28.6×106/g 범위에 해당하였다. 규조 군집 조성에 의해 4개의 규조 군집대를 설정하였으며 규조 군집의 변화는 거의 10만년을 주기로 변화 하였다. Marine Isotope Stages 1-11 시기에 RS15-GC41이 퇴적되는 동안 간빙기(Interglacial)에는 open ocean을 지시하는 Rhizosolenia styliformis, Fragilariopsis kerguelensis와 Thalassionema nitzschioides등이 풍부하게 산출되며, 빙기(Glacial)에는 sea-ice종인 Actinocyclus actinocyclus의 산출이 풍부하게 나타난다. MIS 7, 9와 11의 간빙기 동안 MIS 1, 3과 5 시기보다 sea-ice의 분포가 더 넓고 지속 기간이 더 오래 계속되었음을 알 수 있다. Paralia sulcata는 이 시기(MIS 7, 9와 11) 동안 해류에 의한 ice-rafted debris의 유입과 함께 연안지역으로부터 재이동 되었음을 뒷받침 해 준다.

Abstract AI-Helper 아이콘AI-Helper

In this study, we analyzed diatoms from core RS15-GC41 collected in Iselin Bank, Ross Sea. A total of 24 genera and 35 species of diatoms are identified, and the having valve abundance of diatoms varies from 0.2 to 28.6×106/g. Four diatom assemblage zones are established by the vertical distr...

주제어

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