Cycladophora davisiana(Radiolarian)contents are counted in two cores of the Ber-ing Sea and correlated well with the oxygen isotopic records of ice in the deep core obtained by the Greenland Ice Sheet Project II(GISP ...Cycladophora davisiana(Radiolarian)contents are counted in two cores of the Ber-ing Sea and correlated well with the oxygen isotopic records of ice in the deep core obtained by the Greenland Ice Sheet Project II(GISP 2)and deep-sea sediments(SPECMAP)of the world oceans.Millennial scale climatic events,for example,Younge Dryas and B?lling/Aller?d events,Heinrich1 and Dansgaard-Oeschger1events,recorded by C.davisiana percents are distin-guished from Core B4-2.C.davisiana events b,c1,c2,d,e1 and e2,respectively,corresponding to oxygen isotopic 2.0,3.1,3.3,4.0,5.1 and 5.3,are identified from Core B2-9.High resolution re-cords of C.davisian are tuned to the oxygen isotopic records in GISP 2 and SPECMAP and the depth-age frameworks are established in the two cores,supplying a stratigraphic base for future paleoceanographic and paleoclimatic studies.High C.davisiana during the glacial periods in the two cores indicate that they can serve as a proxy of the glacial Subarctic Pacific Intermediate Water,which verifies the glacial Subarctic Pacific Intermediate Water brought from the Bering Sea.展开更多
基金supported by the NKBRSF(Grant No.G2000078500)the National Natural Science Foundation of China(Grant Nos.40321603,40276020 and 40176015)+1 种基金the Foundation for the Author of National Excellent Doctoral Dissertation of the People’s Republic of China(Project No.200126)the Foundation for University Key Teachers,Ministry of Education of China.
文摘Cycladophora davisiana(Radiolarian)contents are counted in two cores of the Ber-ing Sea and correlated well with the oxygen isotopic records of ice in the deep core obtained by the Greenland Ice Sheet Project II(GISP 2)and deep-sea sediments(SPECMAP)of the world oceans.Millennial scale climatic events,for example,Younge Dryas and B?lling/Aller?d events,Heinrich1 and Dansgaard-Oeschger1events,recorded by C.davisiana percents are distin-guished from Core B4-2.C.davisiana events b,c1,c2,d,e1 and e2,respectively,corresponding to oxygen isotopic 2.0,3.1,3.3,4.0,5.1 and 5.3,are identified from Core B2-9.High resolution re-cords of C.davisian are tuned to the oxygen isotopic records in GISP 2 and SPECMAP and the depth-age frameworks are established in the two cores,supplying a stratigraphic base for future paleoceanographic and paleoclimatic studies.High C.davisiana during the glacial periods in the two cores indicate that they can serve as a proxy of the glacial Subarctic Pacific Intermediate Water,which verifies the glacial Subarctic Pacific Intermediate Water brought from the Bering Sea.
