[M-IS20] Ocean Plastics, an earth science perspective

Sat. Jun 5, 2021 3:30 PM - 5:00 PM Ch.10 (Zoom Room 10)

convener:Atsuhiko Isobe(Research Institute for Applied Mechanics, 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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3:30 PM - 3:45 PM

[MIS20-07] Large-scale distribution and composition of floating plastic debris in the transition region of the North Pacific

*Kentaro Miyazono¹, Rei Yamashita², Hiroomi Miyamoto³, Kazuaki Tadokoro⁴, Yugo Shimizu⁵, Kazutaka Takahashi¹ (1.Graduate school of agricultural and life science, The University of Tokyo , 2.Atmosphere and Ocean Research Institute, The University of Tokyo , 3.Fisheries Research Agency, Hachinohe, 4.Fisheries Research Agency, Shiogama, 5.Fisheries Agency)

3:45 PM - 4:00 PM

[MIS20-08] TARA-JAMBIO Microplastic Mission : Distributions of microplastics in water surface and sediment of Japanese coastal waters

*Kugako Sugimoto¹, JAMBIO Consortium³, Tara Japan², Sylvain Agostini¹ (1.Shimoda Marine Research Center, University of Tsukuba, 2.Tara Océan Fondation, 3.Japanese Association for Marine Biology)

4:00 PM - 4:15 PM

[MIS20-09] Distribution of Microplastics in the Deep-sea Sediments

*Tomo Kitahashi¹, Masashi Tsuchiya¹, Ryota Nakajima¹, Rie Matsui¹, Kazumasa Oguri^1,2, Kiichiro Kawamura³, Yosaku Maeda¹, Sanae Chiba¹, Katsunori FUJIKURA¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.University of Southern Denmark, 3.Yamaguchi University)

4:15 PM - 4:30 PM

[MIS20-10] Chemical properties of film coatings developed on microplastics distributed on the urban river shore in Mongolia

*Masayuki Kawahigashi¹, Batdulam Battulga¹ (1.Tokyo Metropolitan University)

4:30 PM - 4:45 PM

[MIS20-11] A trial of small microplastics collection by Neuston net

*Haodong XU¹, Haruka NAKANO¹, Tadashi TOKAI¹, Hisayuki ARAKAWA¹ (1.Tokyo University of Marine Science and Technology)

4:45 PM - 5:00 PM

[MIS20-12] Non-contact real-time identification of microplastics in flow by combining holography and Raman spectroscopy

*Tomoko Takahashi^1,2,3, Zonghua Liu², Thangavel Thevar⁴, Nicholas Burns⁴, Dhugal Lindsay¹, John Watson⁴, Sumeet Mahajan³, Blair Thornton^2,3 (1.Japan Agency for Marine-Earth Science and Technology, 2.Institute of Industrial Science, The University of Tokyo, 3.University of Southampton, 4.University of Aberdeen)

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