Modern benthic foraminifera along a transect at 131W in the central equatorial Pacific Ocean and its application to MIS 8 paleoceaography

Title
Modern benthic foraminifera along a transect at 131W in the central equatorial Pacific Ocean and its application to MIS 8 paleoceaography
Author(s)
Takata; 김부근; 유찬민; 김형직; 지상범
KIOST Author(s)
Yoo, Chan Min(유찬민)Kim, Hyung Jeek(김형직)Chi, Sang Bum(지상범)
Publication Year
2013-11-07
Abstract
Abyssal benthc foraminifera in the central equatorial Pacific Ocean seemed to respond to the fluctuations of Intertropical Convergence Zone (ITCZ), but knowledge on modern benthic foraminifera is still limited. We investigated modern benthic foraminifera from six surface sediments of KODOS05-02 cruise along a transect at 131W, focusing on correspondence to the ITCZ position. Nuttallides umbonifer and Epistominella exigua are common constituents. It is notable that the abundances of benthic foraminifera show marked decline between ~6N and ~7N. However, the abundance of E. exigua increases northward from the equator to ~6N, which is consistent to more significat seasonal fluctuation of chlorophyll-a concentrations in the surface water and confirms the seasonal food supply from the surface ocean at ~131W of the central equatorial Pacific Ocean. Latitudinal occurrences of benthic foraminifera during MIS 8 were basically similar to those of the present day.c foraminifera from six surface sediments of KODOS05-02 cruise along a transect at 131W, focusing on correspondence to the ITCZ position. Nuttallides umbonifer and Epistominella exigua are common constituents. It is notable that the abundances of benthic foraminifera show marked decline between ~6N and ~7N. However, the abundance of E. exigua increases northward from the equator to ~6N, which is consistent to more significat seasonal fluctuation of chlorophyll-a concentrations in the surface water and confirms the seasonal food supply from the surface ocean at ~131W of the central equatorial Pacific Ocean. Latitudinal occurrences of benthic foraminifera during MIS 8 were basically similar to those of the present day.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/26617
Bibliographic Citation
2013년 한국해양학회 추계학술발표대회, pp.191, 2013
Publisher
한국해양학회
Type
Conference
Language
English
Publisher
한국해양학회
Related Researcher
Research Interests

deep sea mineral resources,deep sea sediments,심해저 광물자원,심해저 퇴적물,심해 환경

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