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Title: Intrusion of the Kuroshio Current to the Okinawa Trough during 40-100 thousand years before present?
Authors: Chen Y.;Chang Y.;Chen M. Lo L.;Wei K.;Shen C.
Contributors: NTOU:Institute of Applied Geosciences
Date: 2009
Issue Date: 2011-10-20T08:17:38Z
Publisher: American Geophysical Union
Abstract: abstract:Whether the intrusion of paleo-Kuroshio Current had intruded into the Okinawa Trough (OT) during the glacial time has been a debate for decades. In this study, we present records of planktonic foraminifer Globigerinoides ruber Mg/Ca-based sea surface temperature (SST) and δ18O records during 40-100 thousand years ago(ka BP, before AD 1950) from core MD01-2404 (26°38.84' N, 125°48.75' E; 1397 m water depth). The Mg/Ca-derived SST record is characterized by a steady thermal condition at 24.4±2.6 (2σ) °C. Harmonic variations of planktonic and benthic foraminiferal δ18O records suggest that the global sea level change dominates the oxygen isotopic variation in G. ruber shell calcite during 40-100 ka BP. Our geochemistry data imply that the warm and saline Kuroshio Current might have not intruded into the Okinawa Trough during this time window.
URI: http://ntour.ntou.edu.tw/handle/987654321/24770
Appears in Collections:[應用地球科學研究所] 期刊論文

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