Asian monsoon activities reconstructed from varved sediments in Lake Ichi-no-Megata
| Project/Area Number |
25800282
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Geology
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| Research Institution | Museum of Natural and Environmental History, Shizuoka (2015)
Shizuoka University (2014)
Waseda University (2013) |
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Principal Investigator |
YAMADA Kazuyoshi ふじのくに地球環境史ミュージアム, 学芸課, 准教授 (60508167)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 湖沼堆積物 / 古気候 / 年縞 / 一ノ目潟 / アジアモンスーン / 晩氷期 |
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| Outline of Final Research Achievements |
Thirty-seven meter long sediment cores were recovered from Lake Ichi-no-Megata, northeast Japan. Six lithozones were classified based on detailed lithology and physical properties of the sediment cores. Most of the sediment sequences were thinly laminated except one interval from 26.3 to 31.7 m, which is composed of volcanic materials of an adjacent maar, Lake San-no-Megata. Although these laminations had different structures and composition between the Holocene and the last glacial period, they have been related to an annual cycle of deposition, i.e. a varve. Multiple AMS 14C dates enabled us to establish the detailed chronology agreed well with tephrostratigraphy over the last 30,000 years. The age-depth plots indicate a stable deposition environment with a linear sedimentation rate (0.727 mm/year) since after 25,000 cal BP. The continuous laminated sediments have great potential for high-resolution study of the past environmental changes since the last glacial period.
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Report
(4 results)
Research Products
(38 results)
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[Journal Article] Investigaciones Arqueologicas y Paleoambientales en y alrededor de Ceibal, Peten, Guatemala2014
Author(s)
Aoyama, Kazuo, Hitoshi Yonenobu, Takeshi Inomata, Kazuyoshi Yamada, Hiroo Nasu, Toshiyuki Fujiki, Yoshitsugu Shinozuka, Katsuya Gotanda, and Yoshiharu Hoshino
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Journal Title
XXVII Simposio de Investigaciones Arqueologicas en Guatemala
Volume: 27
Pages: 987-995
Related Report
Peer Reviewed
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[Presentation] Asian dust depositional flux changes during the last 100 years recorded in Lake Suigetsu sediment, Japan2015
Author(s)
Nagashima, K., Hara, Y., Nishido, H., Suzuki, Y., Tada, R., Sasaoka, K., Goto-Azuma, K., Yamada, K., Irino, T. and Nakagawa
Organizer
8th International Conference on Asian Marine Geology
Place of Presentation
Cheju Is. (Korea)
Year and Date
2015-09-05
Related Report
Int'l Joint Research
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[Presentation] Spatio-temporal structure of deglacial climate change: climate changes reconstructed from varved sediments of Lake Ichi-no-megata, Northern Japan, and its correlation with global references2015
Author(s)
Kitaba, I., Staff, R.A., Shinozuka, Y., Yamada, K., Gotanda, K., Kitagawa, J., Haraguchi, T., Nakagawa, T. and Yonenobu, H
Organizer
XIX INQUA Congress 2015
Place of Presentation
名古屋国際メッセ（愛知県名古屋市）
Year and Date
2015-07-26
Related Report
Int'l Joint Research
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[Presentation] Temporal variation of very fine elemental carbon in marginal sea and lake sediments in the northern Far East region2015
Author(s)
Irino, T., Nakai, Y.，Lu, S.，Yamamoto, M., Miyazaki, Y., Kawamura, K., Yamada, K., Yonenobu, H., Tada, R., Murray, R.W., Alvarez Zarikian, C.A., and Expedition 346 Scientists
Organizer
XIX INQUA Congress 2015
Place of Presentation
名古屋国際メッセ（愛知県名古屋市）
Year and Date
2015-07-26
Related Report
Int'l Joint Research
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[Presentation] Asian dust input to the North Pacific and its seasonal to decadal variations2015
Author(s)
Nagashima, K., Hara, Y., Nishido, H., Suzuki, Y., Tada, R., Sasaoka, K., Goto-Azuma, K., Yamada, K., Irino, T., Nakagawa, T. and SG12/06 Project members
Organizer
XIX INQUA Congress 2015
Place of Presentation
名古屋国際メッセ（愛知県名古屋市）
Year and Date
2015-07-26
Related Report
Int'l Joint Research
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