日本地球惑星科学連合2023年大会

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[E] 口頭発表

セッション記号 M (領域外・複数領域) » M-IS ジョイント

[M-IS02] Evolution and variability of the Asian Monsoon and Indo-Pacific climate during the Cenozoic Era

2023年5月24日(水) 13:45 〜 15:00 302 (幕張メッセ国際会議場)

コンビーナ:佐川 拓也(金沢大学理工研究域)、松崎 賢史(東京大学 大気海洋研究所)、Sze Ling Ho(Institute of Oceanography, National Taiwan University)、座長:松崎 賢史(東京大学 大気海洋研究所)、関 有沙(信州大学 理学部)

The Asian Monsoon (AM) is an inter-hemispheric atmospheric system driven by the thermal contrast between ocean and land. It interacts with the global climate system via several processes. On tectonic time-scales, the uplift of Himalaya and Tibetan Plateau (HTP) has been considered an important player in the establishment and intensification of the Asian monsoon, but its importance is still debatable. On the other hand, comparison of regional and global paleoclimate records suggests that AM evolution during the Cenozoic is significantly affected by global climate changes most likely through pCO2. In addition, Indo-Pacific oceanic climate condition is also essential for the land-ocean thermal contrast as well as water vapor circulation because these areas have the largest heat content in the global ocean and supply a large amount of heat and moisture to the atmosphere, which cause warm and cool phases of a recurring climate pattern across the tropical Pacific, the El Nino-Southern Oscillation (ENSO).
In this session, we seek to disentangle and determine the relative importance of the above-mentioned processes on different time-scales. This will improve our understanding of the evolution of AM, ENSO and Indo-Pacific in terms of the mean climate state and variability from millennial to tectonic time-scale, as well as their controlling factors, and their interaction with the global climate system. Presentations based on various archives such as piston cores, DSDP/ODP/IODP cores as well as land sections relying on a wide panel of paleo-environmental proxy are welcome (e.g., geochemistry, geophysics, sedimentology, micropaleontology as well as modeling studies). Studies on calibration and evaluation of proxy and comparison of multiproxy approach are also welcome. We also welcome presentations from older time periods such as the Mesozoic and Paleozoic that shed light on the evolution of the monsoon system during the Phanerozoic.

14:10 〜 14:25

*Muhammad Adam Ismail1、Amajida Roslim2Ken Sawada1,3 (1.Division of Natural History Science, Graduate School of Science, Hokkaido University、2.Department of Geoscience, Faculty of Science, Universiti Brunei Darussalam、3.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University)


14:25 〜 14:40

*関 有沙1多田 隆治2、黒川 駿介3入野 智久4村山 雅史5,6 (1.信州大学 理学部、2.千葉工業大学 地球学研究センター、3.東京大学 大学院理学系研究科、4.北海道大学 大学院地球環境科学研究院、5.高知大学 農林海洋科学部、6.高知大学 海洋コア総合研究センター)


Discussion (14:55 〜 15:00)

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