Japan Geoscience Union Meeting 2018

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[JJ] Oral

H (Human Geosciences) » H-QR Quaternary research

[H-QR04] Quaternary, Diachronic dynamics of human-environment interactions

Sun. May 20, 2018 1:45 PM - 3:15 PM A08 (Tokyo Bay Makuhari Hall)

convener:Mamoru Koarai(Earth Science course, College of Science, Ibaraki University), Toshihiko Sugai(Department of Natural Environmental Studies, Institute of Environmental Studies, Graduate School of Frontier Science, The University of Tokyo), Kiyohide Mizuno(国立研究開発法人産業技術総合研究所地質情報研究部門, 共同), Minoru YONEDA(The University Museum, The University of Tokyo), Chairperson:Mizuno Kiyohide, Aoki Kaori

1:45 PM - 2:00 PM

[HQR04-06] Lake environmental reconstruction at Altai Mountain in Mongolia using diatom analysis

*Kaoru Kashima1, Ganzorig Ulgiichimeg 2, Tomokazu Mita1 (1.Department of Earth and Planetary Sciences, Kyushu University, 2.Institute of Geography and Geoecology, Mongolian Academy of Science)

Keywords:Holocene, Climatic Change, Altai Mountain, Mongolia, Diatom Analysis

The Climatic changes and the dust fluctuation histories during the Holocene at Altai Mountain in Mongolia were presumed by the diatom analysis of the lake and marsh deposits. In 2017, we surveyed at 16 lakes and marshes at Altai Mountain, and took 40 diatom samples and 6 drilling cores. The diatoms in the lakes and marshes distributed according to the water environment, especially electric conductivity. We found the two times of high water stages after 4000 years BP using diatom analysis of the cores.