Japan Geoscience Union Meeting 2015

Presentation information


Symbol M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS28] High-resolution paleoclimate observatory network in East Asia-NW Pacific region

Wed. May 27, 2015 11:00 AM - 12:45 PM 202 (2F)

Convener:*Ryuji Tada(Department of Earth and Planetary Science, Graduate School of Science, The Univeristy of Tokyo), Takeshi Nakagawa(Ritsumeikan University), Ken Ikehara(Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Technology), Masanobu Yamamoto(Faculty of Environmental Earth Science, Hokkaido University), Chair:Kana Nagashima(Japan Agency for Marine-Earth Science and Technology, Research and Development Center for Global Change)

12:10 PM - 12:25 PM

[MIS28-05] Development and application of Japan Sea Paleoenvironmental Database (JSPED)

*Kazumi OZAKI1, Shotaro HIRASE1, Yuko KUSAMA1, Wataru IWASAKI2, Yusuke YOKOYAMA1, Hodaka KAWAHATA1, Ryuji TADA2, Masanobu YAMAMOTO3 (1.AORI, The University of Tokyo, 2.Graduate School of Science, The University of Tokyo, 3.Graduate School of Env. Earth Science, Hokkaido University)

Keywords:The Japan Sea, Database, Sea surface temperature, Glacial-interglacial cycles, Alkenone

The Japan Sea has seen fundamental changes in environmental conditions in response to the glacial-interglacial cycles, particularly the spatiotemporal variations of sea surface temperature (SST) and oceanic redox states. These climatically-driven changes along with geochemical and tectonic variations in boundary conditions such as sea-level, patterns of ocean current and oxygen distribution all would have affected evolution and distributions of diverse species. From this point of view, a comprehensive paleoenvironmental database of the Japan Sea will be a powerful tool for elucidating paleoenvironmental variations in geological past, and will provide useful information for testing hypothesis on relationships between past environmental changes and evolution. Here we develop a new database, Japan Sea Paleoenvironmental Database (JSPED), with the aim of a collaboration of paleoceanography and phylogeography. In this study, we will summarize the temporal variations of SST distributions over the last 20 kyr and its relationship with genetic diversity of several fish species in the Japan Sea, and discuss the future direction toward updates of JSPED.