JpGU-AGU Joint Meeting 2026

セッション情報

[E] ポスター発表

セッション記号 M (領域外・複数領域) » M-IS ジョイント

[M-IS16] Evolution and variability of the Tropical Monsoon and Indo-Pacific climate during the Cenozoic Era

2026年5月26日(火) 17:15 〜 19:00 ポスター会場 (幕張メッセ国際展示場 7・8ホール)

The tropical monsoon system encompasses the African, Indian, Australian, and East Asian Monsoons. This inter-hemispheric atmospheric phenomenon is driven by the thermal contrast between ocean and land, interacting with the global climate system through various processes. On tectonic time scales, the uplift of the Himalayas and Tibetan Plateau has been considered a significant factor in the establishment and intensification of the Indo-Australian-Asian monsoon, though its importance remains debated. Paleoclimate records suggest that monsoon evolution during the Cenozoic era was also substantially influenced by global climate changes, likely related to atmospheric CO2 levels.

On the other hand, the Indo-Pacific oceanic climate also plays a crucial role in shaping land-ocean thermal contrast and regulating water vapor circulation. This region, home to the West Pacific Warm Pool (WPWP)-the largest reservoir of oceanic heat-serves as a major source of atmospheric heat and moisture, exerting strong influence on the El Nino-Southern Oscillation (ENSO) climate pattern. The progressive constriction of the Indonesian Seaways during the Neogene has had a major impact on the formation of the WPWP and, in turn, affected ENSO dynamics. However, the precise timing and mechanisms underlying these changes are still under debate.

This session aims to assess the relative importance of these processes across different time scales, from millennial to tectonic. The goal is to advance our understanding of the evolution of the Indo-Australian-Asian Monsoon, WPWP, and ENSO variability and to explore drivers and interactions within the global climate system. Presentations based on both marine and terrestrial archives are encouraged. These studies may encompass a broad range of proxy approaches from geochemistry, geophysics, micropaleontology, sedimentology, as well as the investigation of model simulations across these realms.

17:15 〜 19:00

*松崎 賢史1、佐川 拓也2、板木 拓也3、亀尾 桂1、関 有沙4、入野 智久5、Lo Li6、オブラクタ スティーブン7、桑野 太輔8、Fenies Pierrick9、Shouta Yano5、岡崎 裕典10、Ho Sze Ling9、高田 裕行11、Wu Li-Peng6、Anju Hayakawa2、稲野邉 健央7、Kimura Shunsuke10 (1. Atmosphere and Ocean Research Institute, The university of Tokyo、2. Faculty of Geosciences and Civil Engineering, Kanazawa University、3. The Geological Survey of Japan, AIST、4. Fukada Geological Institute、5. Faculty of Environmental Earth Science, Hokkaido University、6. Department of Geosciences, National Taiwan University、7. Graduate School of International Resource Sciences, Akita University 、8. Graduate School of Human and Environmental Studies, Kyoto University、9. Institute of Oceanography, National Taiwan University、10. Graduate School of Science, Kyushu University、11. Faculty of Dinosaur Paleontology, Fukui Prefectural University)

17:15 〜 19:00

*久保田 好美1、木元 克典2、内田 昌男3、池原 研4、多田 隆治5、オブラクタ スティーブン6 (1. 国立科学博物館、2. 海洋研究開発機構、3. 国立研究開発法人国立環境研究所、4. 産業技術総合研究所地質情報研究部門、5. 千葉工業大学地球学研究センター、6. 秋田大学)

17:15 〜 19:00

*松崎 賢史 1、Roberts Andrew2、Stokes Louisa3、Anton Lottie4、Preece Katie5、Ueda Hayato6、Vanucchi Paola7、Kitajima Hiroko8、Yamaguchi Asuka1、Okutsu Natsumi9、The IODP3 Expedition 502 Science Team (1. Atmosphere and Ocean Research Institute, The university of Tokyo, Japan、2. Research School of Earth Sciences, The Australian National University, Australia、3. School of Earth and Planetary Sciences, Curtin University, Australia、4. School of Geography, Earth & Environmental Sciences, University of Plymouth, UK、5. Department of Geography, Swansea University, UK、6. Department of Geology, Faculty of Science, Niigata University, Japan、7. Department of Earth Science, University of Florence, Italy、8. Department of Geology & Geophysics, Texas A&M University, USA、9. Institute for Marine-Earth Exploration and Engineering, Japan Agency for Marine-Earth Science and Technology, Japan)

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