Tue. May 27, 2025 1:45 PM - 3:15 PM 106 (International Conference Hall, Makuhari Messe)

[J] Oral
| H (Human Geosciences )
| H-CG Complex & General

[H-CG21] Earth surface processes related to deposition, erosion and sediment transport

2:45 PM - 3:00 PM

[HCG21-05] Chemosedimentary sequence analysis using biomarker profiles of the sediments in Bengal Fan

*Yusuke kodama¹, Takuto Ando², Ken Sawada^1,3 (1.Department of Natural History Sciences, Graduate school of Science, Hokkaido University, 2.Department of Earth Resource Science, Faculty of International Resource Sciences, Akita University, 3.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University)

Mon. May 26, 2025 1:45 PM - 3:15 PM 301A (International Conference Hall, Makuhari Messe)

[E] Oral
| B (Biogeosciences )
| B-PT Paleontology

[B-PT03] Biomineralization, Geochemistry, and Environmental Studies

2:15 PM - 2:30 PM

[BPT03-03] Search for diatom biomarkers by lipid analysis of diatom species from North Pacific Ocean

*Kotaro Hoshi¹, Akira Kuwata², Ken Sawada¹ (1.Hokkaido University, 2.Fisheries Technology Institute, Japan Fisheries Research and Education Agency)

Wed. May 28, 2025 3:30 PM - 5:00 PM 301A (International Conference Hall, Makuhari Messe)

[J] Oral
| B (Biogeosciences )
| B-CG Complex & General

[B-CG06] Decoding the history of Earth: From Hadean to the present

3:45 PM - 4:00 PM

[BCG06-20] Paleoecological reconstruction by molecular fossil analysis of sedimentary rocks deposited across the Devonian-Carboniferous boundary in northeastern Vietnam

*Risa Shigi¹, Reishi Takashima², Toshifumi Komatsu³, Ken Sawada⁴ (1.Department of Natural History Sciences, Graduate School of Science, Hokkaido University, 2.The Center for Academic Resources and Archives, The Tohoku University Museum, Tohoku University, 3.Faculty of Advanced Science and Technology, Division of Natural Science, Kumamoto University, 4.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University)

4:15 PM - 4:30 PM

[BCG06-22] Paleoenvironmental variations recorded by molecular fossils in sedimentary rocks deposited across the Cretaceous/Paleogene boundary in the Nemuro Group, Hokkaido, Japan

*Ritomi Kinoshita¹, Masashi A. Ikeda², Ken Sawada¹, Keiichi Hayashi³, Hayu Ota⁴, Junichiro Kuroda⁴, Hiroyuki Hoshi⁵, Reishi Takashima⁶, Hiroshi Nishi⁷ (1.Faculty of Science, Hokkaido University, 2.Kanazawa University, 3.Hokkaido Research Organization (HRO), 4.Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, the University of Tokyo, 5.Aichi University of Education, 6.The Tohoku University Museum, Tohoku University, 7.Institute of Dinosaur Res., Fukui Prefectural University)

Thu. May 29, 2025 10:45 AM - 12:15 PM 301A (International Conference Hall, Makuhari Messe)

[E] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

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

11:15 AM - 11:30 AM

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

*Ryosuke Fukuchi¹, Ken Sawada^2,1 (1.Graduate School of Science, Hokkaido University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University)

Thu. May 29, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS14] Paleoclimatology and paleoceanography

5:15 PM - 7:15 PM

[MIS14-P17] Paleoclimatic reconstruction by algal biomarkers analysis of sediment core in Lake Nakaumi, Japan, during the Little Ice Age

*Kana Matsuda¹, Yuki Hattori¹, Takuto Ando², Hideto Nakamura^1,3, Kotaro Hirose⁴, Ken Sawada^1,3 (1.Department of Natural History Sciences, Graduate School of Science, Hokkaido University, 2.Department of Earth Resource Science, Faculty of International Resource Sciences, Akita University, 3.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 4.Hyogo Prefectural University)

Tue. May 27, 2025 1:45 PM - 3:15 PM 102 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS22] Biogeochemistry

1:45 PM - 2:00 PM

[MIS22-01] Biomarker analysis of suspended particles in sea surface layers of the northwestern Pacific off the eastern Hokkaido to the Sanriku coast

*Sena Tsuneda¹, Kotaro Hoshi¹, Akira Kuwata², Hiroshi Kuroda³, Ken Sawada^1,4 (1.Department of Natural History Sciences, Graduate School of Science, Hokkaido University, 2.Tohoku Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 3.Hokkaido Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 4.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University)

Tue. May 27, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-GI General Geosciences, Information Geosciences & Simulations

[M-GI28] Drilling Earth Science

5:15 PM - 7:15 PM

[MGI28-P02] Reconstruction of marine primary productivity and production by analysis of sediment cores: Consideration for the degradation and preservation effects

*Ken Sawada^1,2, Kotaro Hoshi² (1.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 2.Department of Natural History Sciences, Graduate School of Science, Hokkaido University)

Ken Sawada

Speaker, Author, Co-Author