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Paleoceanographic Changes of the Sea of Japan During 3.5-0.8 Ma

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/38464

Title: Paleoceanographic Changes of the Sea of Japan During 3.5-0.8 Ma
Authors: Kitamura, Akihisa Browse this author
Keywords: Sea of Japan
Warm Tsushima current
Fossil record
Shallow-marine deposits
Pliocene
Pleistocene
Issue Date: 2008
Publisher: 21st Century COE for Neo-Science of Natural History, Hokkaido University
Citation: Edited by Hisatake Okada, Shunsuke F. Mawatari, Noriyuki Suzuki, Pitambar Gautam. ISBN: 978-4-9903990-0-9
Journal Title: Origin and Evolution of Natural Diversity : Proceedings of the International Symposium, The Origin and Evolution of Natural Diversity, held from 1-5 October 2007 in Sapporo, Japan
Start Page: 187
End Page: 194
Abstract: On the basis of fossil record from marine deposits in and around the Sea of Japan, the environment during 3.5-0.8 Ma is divided into two stages. During the old stage (3.5-1.71 Ma (stage 60/59)), cold surface water prevailed, except for the short term inflow (< 41 ky duration) of warm Tsushima Current at 3.5, 3.2, 2.9, 2.4 and 1.9 Ma. During the young stage (1.71-0.8 Ma), the Tsushima Current flowed into the sea at every interglacial highstand. This change was caused by opening of the southern channel due to crustal stretching in the northern Okinawa Trough. The onset of inflow of the Tsushima Current caused intrusion of warm-water organisms into the Sea of Japan during interglacial stages and barrier to migration of land organisms between East Asia and Japan. In summary, the environments and organisms in and around the Sea of Japan since 3.5 Ma have been strongly controlled by the development of southern channel (1.71 and 1.35 Ma) and global climate changes (glacial/interglacial cycles).
Description: International Symposium, "The Origin and Evolution of Natural Diversity". 1–5 October 2007. Sapporo, Japan.
Conference Name: International Symposium, "The Origin and Evolution of Natural Diversity"
Conference Place: Sapporo
Type: proceedings
URI: http://hdl.handle.net/2115/38464
Appears in Collections:Origin and Evolution of Natural Diversity > Proceedings

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