[H-CG27] Turbidity current: from triggers for the generation to the depositional and morphologic al processes

Mon. May 27, 2019 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Miwa Yokokawa(Osaka Institute of Technology), Hajime Naruse(Department of Geology and Mineralogy, Graduate School of Science, Kyoto University), Norihiro Izumi(Faculty of Engineering, Hokkaido University), Ken Ikehara(Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Technology)

Recent developments of field observation, physical and numerical experiments, and mathematical analysis have brought us a better understanding of the dynamics of turbidity currents and relevant morphology and bedforms. Applying new findings to rock records, more profound understanding of turbidites have been achieved. It has been found that different triggers and/or sources generate distinctive features of turbidity currents, resulting in various appearances of rock records and morphology. The integration of such new knowledge on turbidity currents is important not only from scientific but also practical points of view, such as assessments of natural hazards, and exploration of resources. This international session welcomes all kinds of approaches for the turbidity currents such as field observation, physical and numerical experiments, mathematical analysis, and studies from rock records.

[HCG27-P01] The Huapinghsu Canyon (SW East China Sea): morphology and sedimentary processes

*Cheng-Shing Chiang¹, Ho-Shing Yu² (1.National Museum of Natural Science, Taiwan, 2.Institute of Oceanography, National Taiwan University, Taipei, Taiwan)

[HCG27-P02] Towards understanding the seismic history of the Nankai Trough using fine-grained turbidites

*Natsumi Okutsu¹, Juichiro Ashi¹, Asuka Yamaguchi¹ (1.The University of Tokyo)

[HCG27-P03] Flood-induced sediment gravity-flow deposits in varved diatomites

*Hana Sasaki¹, Yoshiro Ishihara² (1.Graduate School of Science, Fukuoka University, 2.Department of Science, Fukuoka University)

[HCG27-P04] Features of parallel lamination in turbidite sandstones in the Upper Cretaceous Izumi Group in the southern part of the Awaji Island, southwest Japan

*Akane Okuda¹, Hajime Naruse¹ (1.Division of Earth and Planetary Sciences, Graduate school of Science, Kyoto University )

[HCG27-P05] Sediment wave formation on slope base environments: an example of the Neogene Aoshima Formation, Miyazaki Prefecture, Southwest Japan

Shiori Iwao¹, Yuri Onishi², *Yoshiro Ishihara¹, Miwa Yokokawa³ (1.Department of Earth System Science Faculty of Science, Fukuoka University, 2.OYO Corporation, 3.Lab. of Geoenvironment, Osaka Institute of Technology)

[HCG27-P06] A flume experiment on sedimentary structures and grain size distribution of cyclic steps formed by surge-type turbidity currents

*Miwa Yokokawa¹, Kazunori Fujita¹, Isamu Mori¹, Robert Fernandez², Matt Czapiga³, John Berrens⁴, Jeffrey Kwang⁴, Kensuke Naito⁴, Gary Parker⁴, Norihiro Izumi⁵, Hajime Naruse⁶ (1.Osaka Institute of Technology, 2.University of Hull, 3.Technical University of Delft, 4.University of Illinois, 5.Hokkaido University, 6.Kyoto University)

Session information