[M-IS17] Ocean Plastics, an earth science perspective

Fri. May 26, 2023 10:45 AM - 12:00 PM 102 (International Conference Hall, Makuhari Messe)

convener:Atsuhiko Isobe(Kyushu University), Kiichiro Kawamura(Yamaguchi University), Yusuke Okazaki(Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University), Masashi Tsuchiya(Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology), Chairperson:Kiichiro Kawamura(Yamaguchi University)

Mismanaged plastic wastes accounting for 70% of marine debris remain persistently in the marine environment, even if they are degraded and fragmentized to tiny microplastics. To date, it has been unknown how this anthropogenic, buoyant, and persistent matter which was first appeared in the earth history, contaminates (or is incorporated into) the earth system. The ocean plastic study requires the insight and methodology of a variety of earth sciences such as the oceanography, geology, and palaeontology. Studies on the plastic circulation loaded from the land/atmosphere to upper oceans and bottom sediments, studies on microplastics as a proxy of the Anthropocene, and studies to establish procedures in monitoring and analyzing macro/microplastics are welcomed.

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10:45 AM - 11:00 AM

[MIS17-06] Deposition rates of small microplastics for the last 70 years in Beppu Bay, southwest Japan

*Michinobu Kuwae¹, Takuma Masuhara², Hirofumi Hinata³ (1.Center for Marine Environmental Studies, Ehime University, 2.Faculty of Science, Ehime University, 3.Faculty of Engineering, Ehime University)

11:00 AM - 11:15 AM

[MIS17-07] Numerical simulation of microplastic accumulation rates in Beppu Bay: Comparison among summers in 1993, 2004, and 2013

*Hirofumi Hinata¹, Kenki Kasamo¹, Atsuomi Mase¹, Yui Matsuura¹, Michinobu Kuwae¹, Narumi Tsugeki² (1.Ehime University, 2.Matsuyama University)

11:15 AM - 11:30 AM

[MIS17-08] Distribution and estimated tranport process of microplastics in deep-sea sediments of the Northwest Pacific

*Masashi Tsuchiya¹, Tomo Kitahashi², Ryota Nakajima¹, Kazumasa Oguri³, Kiichiro Kawamura⁴, Akimu Nakamura⁵, Kengo Nakano⁶, Yosaku Maeda¹, Masafumi MURAYAMA⁷, Sanae Chiba⁸, Katsunori FUJIKURA¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.KANSO TECHNOS CO., LTD., 3.Hadal and Nordcee, Department of Biology, University of Southern Denmark, 4.Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 5.Nishi-Nippon Railroad Co., Ltd., 6.Fujiyama, 7.Faculty of Agriculture and Marine Science, Kochi University, 8.North Pacific Marine Science Organization)

11:30 AM - 11:45 AM

[MIS17-09] Zooplankton as a suitable bioindicator for small microplastics: perspectives and challenges

*Maria Belen Alfonso¹, Haruka NAKANO¹, Suppakarn Jandang¹, Andres Hugo Arias², Isobe Atsuhiko¹ (1.Research Institute for Applied Mechanics, Kyushu University, 2.Instituto Argentino de Oceanografía (IADO), Universidad Nacional del Sur (UNS)-CONICET, Florida, 8000, Complejo CCT CONICET Bahía Blanca, Edificio E1, B8000BFW, Bahía Blanca, Argentina)

11:45 AM - 12:00 PM

[MIS17-10] Can plastic debris distribute microbes all over the ocean?

*Yoshiyuki Ishitani¹, Shunichi Ishii¹, Hiroyuki Kashima¹, Yuuki Sakao¹, Noriyuki Isobe¹, Yuriko Nagano¹, Ryota Nakajima¹, Hidetaka Nomaki¹ (1.Japan Agency for Marine-Earth Science and Technology)

Session information