Session Details
[U-11]Climate change during the Quaternary and Anthropocene
Tue. May 26, 2026 5:15 PM - 7:00 PM JST
Tue. May 26, 2026 8:15 AM - 10:00 AM UTC
Tue. May 26, 2026 8:15 AM - 10:00 AM UTC
Poster Hall Exhibition Hall 7&8, Makuhari Messe_2
convener:Kaoru Kubota(Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology), Yusuke Yokoyama(Atmosphere and Ocean Research Institute, University of Tokyo), Li Lo(Department of Geosciences, National Taiwan University), Chuan-Chou Shen(National Taiwan University)
Understanding the mechanisms and variability of the Earth climate system across different timescales is essential for sustaining the biosphere and human society. Anthropogenic forcing has increasingly modified the climate system through physical and chemical perturbations, affecting ecosystems and human activities on a global scale. This session invites contributions on Quaternary and Anthropocene climate change derived from natural archives, proxy data, and modeling approaches. We particularly encourage studies addressing hydrological and atmospheric variability, extreme climatic events, and the coupled interactions among the atmosphere, ocean, and greenhouse gases that drive global climate change.
[U11-P01]Investigation of water-mass mixing near the Denman Glacier using dissolved inorganic radiocarbon
*Yaojia Sun1, Laura Herraiz-Borreguero2,3, Stewart Fallon4, Michael Ellwood4,5, Yosuke Miyairi1, Yusuke Yokoyama1 (1.Atmosphere and Ocean Research Institute, University of Tokyo, 2.Australian Antarctic Program Partnership (AAPP), University of Tasmania, Hobart, TAS, Australia, 3.Commonwealth Scientific and Industrial Research Organization Environment, Hobart, TAS, Australia, 4.Research School of Earth Sciences, Australian National University, Canberra, Australia, 5.Australian Centre for Excellence in Antarctic Science (ACEAS), Australian National University, Canberra, ACT, Australia)
[U11-P02]Anthropocene Diatom Assemblages and Paleoceanographic Variability along the Alaskan Margin of the Arctic Ocean
*Masao IWAI1, Yuki Hamada2,3, Tatsuki Miyake2,4, Masanobu Yamamoto5 (1.Marine Core Research Institute, Kochi University, 2.Graduated Faculty of Science and Technology, Kochi University, 3.the BIKEN Foundation, 4.SANSHIN Co., Ltd., 5.Hokkaido University)
[U11-P03]Stratigraphic evidence for modern-like glacier extents in south-central Alaska within the last glacial period (MIS 3).
*Bruno Belotti1, Elizabeth Cassel1, Timothy Bartholomaus1, Michael Loso2, Michael Christoffersen3, John Holt4 (1.Department of Earth and Spatial Sciences, University of Idaho, Moscow, 83844, Idaho, United States, 2.Wrangell-St. Elias National Park and Preserve, Resource Stewardship and Science, Copper Center, 99573, Alaska, United States, 3.School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, 30332-0340, Georgia, United States, 4.Department of Geosciences, University of Arizona, Tucson, 85721, Arizona, United States)
[U11-P04]Significant Ecological Reorganization of Planktonic Diatom Communities Across the Mid-Pleistocene Transition in the Okhotsk Sea
*Li Lo1, Yusuke Okazaki2, Liang-Chi Wang3, Chih-Lin Wei4 (1.Department of Geosciences, National Taiwan University, Taipei, Taiwan, 2.Department of Earth and Planetary Sciences, Kyushu University, Fukuoka, Japan, 3.Department of Environmental Sciences, National Chung Cheng University, Chiayi, Taiwan, 4.Institute of Oceanography, National Taiwan University, Taipei, Taiwan)
[U11-P05]Sedimentary and Environmental Changes of Terminal Lake in the Arid Region of Mongolia During the Last Two Millennia
*Shuukhaaz Ganbat1,3, Noriko Hasebe1, Davaadorj Davaasuren2, Keisuke Fukushi1, Shinya Ochiai1 (1.Institute of Nature and Environmental Technology, Kanazawa University, 2.School of Art Science, National University of Mongolia, 3.Institute for Sustainable Development, National University of Mongolia)
[U11-P06]Tracking Surface Water Mass Mixing in the Northwestern Pacific Using Dissolved Inorganic Radiocarbon
*Yincheng Liu1, Yaojia Sun1, Zihan Huang1, Toshiya Fujiwara2, Toshiya Kanamatsu2, KanHsi Hsiung2, Shoko Hirabayashi1, Yosuke Miyairi1, Yusuke Yokoyama1 (1.Atmosphere and Ocean Research Institute, University of Tokyo , 2.Japan Agency for Marine-Earth Science and Technology)
[U11-P07]Bulk versus density fractionations: Comparison of Radiocarbon Dating Techniques on Tsunami Deposits located at Kadonohama, Iwate Prefecture
*Jessica Biddle1, Takashi Ishizawa5, Kai Leggett2, Yosuke Miyairi2, David Heslop1, Yusuke Yokoyama1,2,3,4 (1.Australian National University, 2.Atmosphere and Ocean Research Institute, and Department of Earth and Planetary Sciences, The University of Tokyo, 3.Department of Earth and Planetary Sciences, Graduate School of Science, The University of Tokyo, 4.Graduate Program on Environmental Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 5.International Research Institute of Disaster Science, Tohoku University)
[U11-P08]Evaluating Ecosystem Responses to Extreme Extreme Hydroclimate Events in Lake Suigetsu Using Deep-Learning–Based Diatom Segmentation
*Yusaku Tamura1, Masayuki Ikeda1, Megumi Saitou2, Takeshi Nakagawa3, Ryuji Tada4, Daishi Horiuchi5 (1.University of Tokyo, 2.National Museum of Nature and Science, 3.Ritsumeikan University, 4.Chiba Institute of Technology,, 5.Japan Coast Guard Academy)
[U11-P09]Last glacial Aisan monsoon history recorded as 10Be in sediments obtained from Lake Biwa, Japan
*Yusuke Yokoyama1,2,3,4, Satomi Takahashi1, Takahiro AZE1, Masako Yamane1, Yosuke Miyairi1, Hiroyuki Kitagawa5, Hiroyuki Matsuzaki6, Keiji Takemura7 (1.Atmosphere and Ocean Research Institute, University of Tokyo, 2.Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, 3.Graduate Program on Environmental Science, University of Tokyo, 4.Research School of Physics, The Australian National University, 5.Institute for Space-Earth Environmental Research, Nagoya University, 6.MALT, The University Museum, University of Tokyo, 7.The Institute for Geothermal Sciences, Graduate School of Science, Kyoto University)
[U11-P10]Hydroclimatic variability during the last deglaciation based on biogenic silica records from Lake Suigetsu, Japan
*Madoka Murai1, Masayuki Ikeda1, Takeshi Nakagawa2, Ryuji Tada3, Daishi Horiuchi4, Tsuyoshi HARAGUCHI11,5, Ikuko Kitaba2, Yoshiaki Suzuki6, Katsuya Gotanda7, Keitaro Yamada8, TAKAAKI ITAI1, Jonathan TYLER9, Alexander FRANCKE9, Vanessa NOWINSKI9, Ryuhei Sanjo10, Kazuo Mizoguchi10 (1.The University of Tokyo, Graduate School of Science, Japan, 2.Ritsumeikan University, Research Center for Palaeoclimatology, Japan, 3.Earth Science Research Center, Chiba Institute of Technology, Japan, 4.Japan Coast Guard Academy, Japan, 5.International Research Institute of Disaster Science (IRIDeS), Tohoku University; STORY Co., Ltd., Japan, 6.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Japan, 7. Chiba University of Commerce, Faculty of Global and Regional Studies, Japan, 8.Yamagata University, Faculty of Science, Japan, 9.Adelaide University, School of Physics, Chemistry and Earth Science, Australia, 10.Central Research Institute of Electric Power Industry (CRIEPI), Japan, 11.STORY, Ltd.)
[U11-P11]Decoupling of silicate weathering and Asian monsoon evolution during the penultimate glacial and interglacial
Meng Zhang1, Xiuyang Jiang2, *Chuan-Chou Shen3, Chun-Yuan Huang3, Fengtai Tong4, Jack Geary Murphy5, Yang-Yang Wang1, Yilin Xiao1 (1.University of Science and Technology of China, 2.Fujian Normal University, 3.National Taiwan University, 4.Nanjing University, 5.University of Pennsylvania)
[U11-P12]Reconstruction of the Kuroshio Current Characteristics and Variability during the 20th Century Based on Coral Records from the Ryukyu Islands.
*Yuta Oue1, Ryuji Asami1, Hideko Takayanagi1,2, Shusaku Sugimoto1,2, Tohru Naruse3, Osamu Abe4, Ryuichi Shinjo5, KE LIN6, Xianfeng Wang6, Yasufumi Iryu2 (1.Graduate School of Science, Tohoku University, 2.Advanced Institute for Marine Ecosystem Change, 3.Tropical Biosphere Research Center, University of the Ryukyus, 4.Graduate School of Environmental Studies, Nagoya University, 5.Department of Materials and Earth Sciences, University of the Ryukyus, 6.Nanyang Technological University, Singapore)
[U11-P13]Precessional and Millennial Intensification of the Kuroshio Current in the Okinawa Trough Revealed by Foraminifera-Bound Nitrogen Isotopes
*Haojia Abby Ren1,2, Wen-Hui Chen1,2, Er-Wen Yang1, Yuan-Pin Chang3, Min-Te Chen4, Yu-Chen Liu1, Ya-Hsien Lan2, Yi-Jun Lin1 (1.National Taiwan University, 2.Academia Sinica, 3.National Sun Yat-Sen University, 4.National Taiwan Ocean University)
[U11-P14]Middle Holocene (4.6 ka) hydroclimatic variations from monthly geochemical records in a fossil coral at Ishigaki Island.
*Krisana Supadee1, Ryuji Asami1, Osamu Abe2, Sayaka Okuhira1, Hideko Takayanagi1,3, Yasufumi Iryu1,3 (1.Institute of Geology and Paleontology, Department of Earth Science, Graduate School of Science, Tohoku University, Aobayama, Sendai, Miyagi 980-8578, Japan., 2.Graduate School of Environmental Studies, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan, 3.Advanced Institute for Marine Ecosystem Change (WPI-AIMEC), Tohoku University, Sendai 980-8578, Japan)
[U11-P15]Evaluation of the potential of in-situ cosmogenic 14C to date Holocene marine terraces on Yakushima, Japan
*Jianlun ZHANG1,2, Kai Leggett1,2, Yosuke Miyairi1, Yusuke Yokoyama1,2,3 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Department of Earth and Planetary Science, School of Science, The University of Tokyo, 3.Research School of Physics, The Australian National University)
[U11-P16]Tracing Groundwater Dynamics on Yoron Island (Amami Islands) Using Radiocarbon
*Shoko Hirabayashi1, Yusuke Yokoyama1, Naoto Fukuyo2, Toshihiro Miyajima1 (1.Atmosphere and Ocean Research Institute, The University of Tokyo , 2.Hosei University)
[U11-P17]Holocene Diatom and Chrysophyceae assemblages at Toushe Peatland, Central Taiwan; Ancient flooding traces preserved in a peat bog during these 9000 years presumed by microfossils
*Kaoru Kashima1, LiangChi Wang2, Yu Fukumoto3, Abdur Rahman2 (1.Estuary Research Center, Shimane University, Department of Earth and Environmental Sciences, National Chung Cheng University Taiwan, 2.Department of Earth and Environmental Sciences, National Chung Cheng University Taiwan, 3.Estuary Research Center, Shimane University)
[U11-P18]Corals as High-Resolution Archives of Marine Lead Pollution in the Western North Pacific
*Kuo-Fang Huang1, Yi-Ning Chen1, Yu-Tsung Tai1, Hong-Yi Chen1, Yi-Wei Liu1, Li Lo2 (1.Institute of Earth Sciences, Academia Sinica, 2.Department of Geosciences, National Taiwan University)
[U11-P19]Characteristics of Radiocarbon from Nuclear Tests in East Asia Detected in Tree-Ring Cellulose
*Kohei Sakamoto1, Wataru Sakashita2, Yosuke Miyairi1, Takahiro AZE1, Toshihiro Miyajima1, Yusuke Yokoyama1 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Forestry and Forest Products Research Institute)
[U11-P20]Glacial–interglacial CO2 dynamics over the last 800 kyr revealed by multi-proxy geochemical analyses of planktic foraminifera from the South China Sea
*Yi-Ning Chen1, Kuo-Fang Huang1 (1.Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan)
[U11-P21]Ocean Heat Transport Variability in the Western Pacific Warm Pool During the Last Deglaciation: Insights from TraCE-21ka
*Yi-Hsueh Tsai1, Li Lo1, Shih-Yu Lee 2, Qiuzhen Yin3 (1.Department of Geosciences, National Taiwan University, Taipei, Taiwan, 2.Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan, 3.Earth and Climate Research Center, Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium)
[U11-P22]Upwelling in the Timor Sea during the Last Glacial Maximum revealed by beryllium isotope
*Karin Nemoto1, Yusuke Yokoyama1,2,3,4, Stephen Obrochta5, Yosuke Miyairi1, Takahiro AZE1 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Department of Earth and Planetary Science, The University of Tokyo, 3.Graduate Program on Environmental Studies, The University of Tokyo, 4.Research School of Physics, The Australian National University, 5.Graduate School of International Resource Science, Akita University)
[U11-P23]Temporal Constraints on Sea Levels During Past Interglacials from U-Th Dated Hawai’i Corals
*Yueh-Yang Lee1,2, Yusuke Yokoyama1,2,3,4, Jody M Webster5, Marc Humblet6, Juan Carlos Braga7, Ana Christina Ravelo8 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Graduate Program on Environmental Sciences, The University of Tokyo, 3.Graduate School of Science, The University of Tokyo, 4.Research School of Physics, The Australian National University, 5.Geocoastal Research Group, School of Geosciences, The University of Sydney, 6.Graduate School of Environmental Studies, Nagoya University, 7.Department of Stratigraphy and Paleontology, University of Granada, 8.Ocean Sciences Department, University of California, Santa Cruz)
[U11-P24]Understanding Antarctic Melting History through Sea-level Highstand Deposit from Rameswaram Island, India
*Saikat Kumar Misra1, Shoko Hirabayashi2, Shradha Menon1, Yusuke Yokoyama2, Pankaj Khanna1 (1.REEFS Lab, Department of Earth Sciences, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat-382355, India , 2.Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan)
[U11-P25]Reconstructing human-environment interactions in the Maya lowlands using lipid biomarkers
*Benjamin Gwinneth1, Kevin Johnston2, Andy Breckenridge3, Peter Douglas4, Isabel Strachan4,1, Alexis Marcoux1, Haydar Martínez Dyrzo5, Priyadarsi Roy5 (1.Département de géographie, Université de Montréal, 2.Independent Scholar, Columbus, United States of America, 3.Natural Sciences Department, University of Wisconsin-Superior, Superior, United States of America, 4.Department of Earth and Planetary Sciences, McGill University, Montréal, Canada, 5.Departamento de Dinámica Terrestre Superficial, Universidad Nacional Autónoma de México, Ciudad de México, México)
[U11-P26]Reconstruction of Crop Yield Potential for the Past 1000 Years Using Paleoclimate Reconstruction Methods: A Comparative Analysis with Societal Events
*Norihiro Matsumura1, Yuji Masutomi2, Jingya Cheng1, Kei Yoshimura1 (1.The University of Tokyo, 2.National Institute of Environmental Studies)
[U11-P27]Northern African Hydroclimate Dynamics During Marine Isotope Stage 7 Revealed by Speleothem Records from Tunisia
*Mesut Kolbuken1, Yun-Chuan Chung1,2, Hatem Dhaouadi3, Chuan-Chou Shen1 (1.High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC), Department of Geosciences, National Taiwan University, Taipei, 106319, Taiwan, ROC, 2.Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland, 3.Research Laboratory of Environmental Chemistry and Clean Processes (LR21ES04), Department of Chemistry, Faculty of Sciences, University of Monastir, Monastir, Tunisia)