[M-IS06] Evolution and variability of the Tropical Monsoon and Indo-Pacific climate during the Cenozoic Era

2025年5月29日(木) 10:45 〜 12:15 301A (幕張メッセ国際会議場)

コンビーナ:松崎賢史(東京大学大気海洋研究所)、佐川拓也(金沢大学理工研究域)、Ho Sze Ling(Institute of Oceanography, National Taiwan University)、Gallagher Stephen J(University of Melbourne)、Chairperson:Sze Ling Ho(Institute of Oceanography, National Taiwan University)、佐川拓也(金沢大学理工研究域)

The tropical monsoon system spans the African, Indian, Australian, and East Asian Monsoons. Driven by ocean-land thermal contrasts, it interacts with the global climate system. On tectonic time scales, the uplift of the Himalayas and Tibetan Plateau has been considered a significant factor in the establishment and intensification of tropical monsoon, though its importance remains debated. Paleoclimate records suggest that monsoon evolution during the Cenozoic era was also substantially influenced by global climate changes related to changes in atmospheric CO2.
The Indo-Pacific oceanography also plays a crucial role in generating land-ocean thermal contrast and water vapor circulation. The region's West Pacific Warm Pool (WPWP), the largest heat reservoir in the global ocean, significantly contributes to atmospheric heat and moisture, influencing the El Nino-Southern Oscillation (ENSO) climate pattern. The constriction of the Indonesian Seaways during the Neogene has had a major impact on the formation of the WPWP and consequently affects ENSO dynamics. However, the precise timing and mechanism of this process are still under debate.
This session aims to assess the relative importance of these processes on different time scales, from millennial to tectonic. The goal is to enhance our understanding of the evolution of the tropical Monsoon, WPWP, and ENSO variability. It also seeks to explore the controlling factors and interactions with the global climate system. Presentations based on various archives such as piston cores, DSDP/ODP/IODP cores, and land sections are encouraged. These studies welcome a broad range of paleo-environmental proxies, including geochemistry, geophysics, sedimentology, and micropaleontology. Modeling studies are also welcome to complement the proxy-based research.

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10:45 〜 11:00

[MIS06-06] Monsoon intensity is not the dominant control of glacial-interglacial SST latitudinal patterns in the South and East China Sea

Alicia Hou^1,2、*Sze Ling Ho¹、Ru-Yun Tung¹、Shih-Yun Lin¹、Masanobu Yamamoto³、Kuo-Fang Huang⁴、Yuan-Pin Chang⁵、Min-Te Chen⁶ (1.Institute of Oceanography, National Taiwan University、2.EPOC, University of Bordeaux、3.Faculty of Environmental Earth Science, Hokkaido University、4.Institute of Earth Sciences, Academia Sinica、5.Department of Oceanography, National Sun Yat-Sen University、6.Institute of Earth Sciences, Center of Excellence for the Oceans & Center of Excellence for Ocean Engineering, National Taiwan Ocean University)

11:00 〜 11:15

[MIS06-07] Changes in the Tsushima Warm Current System in the Japan Sea Throughout the Holocene

*松崎賢史¹、板木拓也²、佐川拓也³、鈴木克明²、入野智久⁴、池原研² (1.東京大学大気海洋研究所、2.産業技術総合研究所　地質情報研究部門、3.金沢大学理工研究域地球社会基盤学系、4.北海道大学大学院地球環境科学研究院 )

11:15 〜 11:30

[MIS06-08] Variations in paleovegetation recorded by plant-derived terpenoids in the sediments from Lake Dabusu, northeastern China, over the past 7.2 ka

*福地亮介¹、沢田健^2,1 (1.北海道大学理学院自然史科学専攻、2.北海道大学理学研究院地球惑星科学部門)

11:30 〜 11:45

[MIS06-09] Reconstructing past dynamics of the East Asian Monsoon using the temperature variability derived from individual foraminifera analysis

*Pei-Ting Lee¹、Sze Ling Ho¹、Yoshimi Kubota²、Keiji Horikawa³、Chuan-Chou Shen⁴、Min-Te Chen⁵ (1.Institute of Oceanography, National Taiwan University, Taipei, Taiwan、2.Geology and Paleontology, National Museum of Nature and Science, Tsukuba, Japan、3.Faculty of Science, Academic Assembly, University of Toyama, Toyama, Japan、4.Department of Geosciences, National Taiwan University, Taipei, Taiwan、5.Institute of Earth Sciences, National Taiwan Ocean University, Keelung, Taiwan)

11:45 〜 12:15

[MIS06-10] Late Quaternary tropical Indo-Pacific climate and its relation to the Australasian monsoon

★Invited Papers

*Mahyar Mohtadi¹ (1.Center for Marine Environmental Sciences, University of Bremen, Germany)

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