[M-IS05] Cenozoic Evolution of the Asian Monsoon and the Indo-Pacific Paleoclimates

convener:Masanobu Yamamoto(Faculty of Environmental Earth Science, Hokkaido University), Steven C Clemens(Brown University), Hongbo Zheng(Research Center for Earth System Science, Yunnan University), Ryuji Tada(Department of Earth and Planetary Science, Graduate School of Science, The Univeristy of Tokyo)

The Asian monsoon (AM) and the El Nino-Southern Oscillation (ENSO) are dominant atmospheric-ocean phenomena on the Earth and affect the climates of Asia, Oceania and circum-Pacific regions. During the Cenozoic, the climate of these areas changed drastically, but the behaviors of the Asian monsoon and the tropical ocean-atmosphere interactions like the ENSO were not fully understood. From July 2013 to December 2016, IODP conducted a series of expeditions such as 346 (Asian Monsoon), 353 (Indian Monsoon Rainfall), 354 (Bengal Fan), 355 (Arabian Sea Monsoon), 356 (Indonesian Throughflow), 359 (Maldives Monsoon and Sea Level), 361 (Southern African Climate), and 363 (Western Pacific Warm Pool) that are related to the AM and tropical Pacific climate evolution and its interaction with global climate system in NW and tropical Pacific and Indian Ocean regions, and exciting results are coming out. We believe it is timely to start synthesizing the results of these cruises and update and exchange information and ideas to promote our understanding of the AM and tropical Pacific evolution, variability, their controlling factors, and their interaction with global climate system during the Cenozoic. On orbital and millennial timescales, studies on the response of the AM and the ENSO to climate forcing are intensively studied using various archives such as sediments, speleothems, corals, etc., during the last decade. Presentations and discussions on the above topics from various backgrounds (proxy and modeling studies) are highly welcome.

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[MIS05-P01] Isotope analysis of Neogene marine sediment from Maldives

*Yuka Tatera¹, Katsuyuki Yamashita¹, Tsuyoshi Ishikawa², Mayuri Inoue¹ (1.Okayama University, 2.Kochi Institute for Core Sample Research, JAMSTEC)

[MIS05-P02] Human activities during last 700 years as recorded in the concentrations of polycyclic aromatic hydrocarbons and pentacyclic triterpene methyl ethers in sediment cores from Lake Suigetsu

*Masaya Inagaki¹, Hideto Nakamura², Masanobu Yamamoto¹, Takeshi Nakagawa³ (1.Graduate School of Environmental Science, Hokkaido University, 2.Faculty of Science, Osaka City University, 3.Research Center for Palaeoclimatorogy, Ritsumeikan University)

[MIS05-P03] Reconstruction of paleoclimate changes in the region where the Okhotsk culture flourished over the past 2,700 year

*Ryuichi Seto¹, Osamu Seki², Masanobu Yamamoto³, Takuya Itaki⁴ (1.Graduate School of Environmental Science, Hokkaido University, 2.Institute of Low Temperature Science, Hokkaido University, 3.Facility of Environmental Earth Science, Hokkaido University, 4.Geological Survey of Japan, AIST)

[MIS05-P04] Fluvio-sedimentary response to late Quaternary climate at the Himalayan frontal thrust, central Nepal

*Mari Hamahashi¹, Judith Hubbard¹, Samuel Haines¹, Rafael Almeida², Edgardo Latrubesse¹, Sanjita Mishra³, Lewis Owen⁴, Soma Nath Sapkota³ (1.Earth Observatory of Singapore, Nanyang Technological University, 2.Yachay Technical University, Ecuador, 3.Department of Mines and Geology, National Seismological Center, Nepal, 4.North Carolina State University, USA)

[MIS05-P05] Tropical western Pacific hydrology during the last 6000 years based on charcoal records from Borneo

*Masanobu Yamamoto¹, Takafumi Kikuchi¹, Hiromichi Sakurai¹, Ryoma Hayashi², Osamu Seki¹, Takafumi Omori³, Abdullah Sulaiman⁴, Hasrizal Shaari⁵, Lulie Melling⁶ (1.Faculty of Environmental Earth Science, Hokkaido University, 2.Lake Biwa Museum, 3.The University of Tokyo, 4.Minerals and Geoscience Department Malaysia, 5.Universiti Malaysia Terengganu, 6.Tropical Peat Research Institute)