Japan Geoscience Union Meeting 2022

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[J] Oral

H (Human Geosciences ) » H-QR Quaternary research

[H-QR04] Quaternary, Diachronic dynamics of human-environment interactions

Sun. May 22, 2022 10:45 AM - 12:15 PM 202 (International Conference Hall, Makuhari Messe)

convener:Kazuyoshi Yamada(Waseda University), convener:Toru Tamura(Institute of Geology and Geoinformation Geological Survey of Japan, AIST), Kazuaki Hori(Department of Earth Science, Graduate School of Science, Tohoku University), convener:Atsushi Urabe(Research Institute for Natural Hazards and Disaster Recovery, Niigata University), Chairperson:Kazuyoshi Yamada(School of Human Sciences, Waseda University), Kazuaki Hori(Department of Earth Science, Graduate School of Science, Tohoku University), Toru Tamura(Institute of Geology and Geoinformation Geological Survey of Japan, AIST), Atsushi Urabe(Research Institute for Natural Hazards and Disaster Recovery, Niigata University)

11:45 AM - 12:00 PM

[HQR04-05] Last 100-year environmental history of urban areas recorded in the moat sediments

*Kazuyoshi Yamada1, Junya Kaneko1, Koji Seto2, Kota Katsuki2, Akira Tsujimoto3, Toshiyuki Fujiki4, Kaoru Kashima5 (1.School of Human Sciences, Waseda University, 2.Estuary Research Center, Shimane University, 3.Faculty of Education, Shimane University, 4.Faculty of Science, Okayama University of Science, 5.Faculty of Science, Kyushu University)

Keywords:Water pollution, Anthropocene, Paleoenvironment, Moat, Sumpu Castle, Okayama Castle

Environmental changes have been recorded in the sediments of the moat of the castle that remain in Japan. In particular, if the castle is built in the coastal plain, it will be located in the center of the city as it is, such as the location of the prefectural office. It is possible to reconstruct the environmental changes in these areas, and it is a convenient material for discussing the environmental changes in the Anthropocene. Therefore, in this study, columnar samples were collected at each point in Sumpu Castle in the central area of Shizuoka City and Okayama Castle Moat in the central area of Okayama City, and the dating data from the Pb / Cs dating results were used. Environmental changes over the past 100 years have been restored based on sediment layer observations and CNS analysis.