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頁籤選單縮合
題名 | The Ancient Kuroshio Current in the Okinawa Trough during the Holocene=全新世時期沖繩海槽內之古黑潮洋流 |
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作者姓名(中文) | 謝英宗; 陳民本; | 書刊名 | 臺灣海洋學刊 |
卷期 | 34:4 1995.12[民84.12] |
頁次 | 頁73-80 |
分類號 | 351.951 |
關鍵詞 | 古海洋; 沖繩海槽; 黑潮; 浮游性有孔蟲; Paleoceanography; Okinawa trough; Kuroshio current; Planktonic foraminifera; |
語文 | 英文(English) |
中文摘要 | 本研究從南沖繩海槽採得之活塞岩心OR281-12P沉積物的浮游性有孔蟲的分布,粗 顆粒含量和碳十四定年著手瞭解全新世時期黑潮進入沖繩海槽之狀況。在七千五百年前,浮 游性有孔蟲Globigerinoides ruber, Pulleniatina obliquilocualata和Globigerinita glutinata的相對含量急速增加,而Neogloboquadrina dutertrei的相對含量遞減之現象顯 示古黑潮的洋流路徑在該時起了變化。 |
英文摘要 | This study examined the entry of the Kuroshio Current into the Okinawa Trough during the Holocene period. Analyses of the planktonic foraminiferal faunal concentratons, coarse fraction measurements and detailed C-14 dating of piston core OR281-12P, which was collected from the southern Okinawa Trough. At about 7.5±0.5Ka, the relative abundance of Globigerinoides, ruber, Pulleniatina obliquiloculata and Globigerinita glutinata increased rapidly, but Neogloboquadrina dutertrei decreased. Our results indicate that the ancient Kuroshio Current path changed at that time. ######################################## |
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