[S-CG65] [EE] Turbidity current: from triggers for the generation to the depositional and morphological processes

Thu. May 25, 2017 1:45 PM - 3:15 PM Poster Hall (International Exhibition Hall HALL7)

convener:Miwa Yokokawa(Osaka Institute of Technology), Norihiro Izumi(Faculty of Engineering, Hokkaido University), Svetlana Kostic(Computational Science Research Center, San Diego State University), Hide Sakaguchi(Japan Agency for Marine-Earth 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.

[SCG65-P01] Rock magnetic analyses for understanding of depositional processes of turbidites induced by large earthquakes in Japan Trench

*Toshiya Kanamatsu¹, Ken Ikehara², Kazuno Arai³, Kazuko Usami² (1.Japan Agency for Marine-Earth Science and Technology, 2.Geological Survey of Japan, AIST, 3.Center for advanced marine core reserach, Kochi University)

[SCG65-P02] Origin of deep-sea turbidite by stratigraphic variations of terrigenous organic carbon ratio, examples from the off Kii and Boso peninsulas

*Akiko Omura^1,2,3, Juichiro Ashi^2,3, Natsumi Okutsu^2,3 (1.JSPS Research Fellow, 2.Graduate School of Frontier Science, The University of Tokyo, 3.Atmosphere and Ocean Research Institute, The University of Tokyo)

[SCG65-P03] Identification of muddy seismogenic turbidite from sedimentary structure and chemical composition

*Natsumi Okutsu¹, Juichiro Ashi¹, Akiko Omura¹, Asuka Yamaguchi¹, Toshiya Kanamatsu², Yusuke Suganuma³, Masafumi MURAYAMA⁴ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Japan Agency for Marine-earth Science and Technology, 3.National Institute of Polar Research, 4.Center for Advanced Marine Core Research, Kochi University)

[SCG65-P04] Stratigraphic changes and sedimentary facies of lacustrine sediment gravity flow deposits in the Middle Pleistocene Miyajima Formation, Tochigi Prefecture, northeast Japan

*Hana Sasaki¹, Yuri Onishi¹, Yoshiro Ishihara² (1.Graduate School of Science, Fukuoka University, 2.Department of Science, Fukuoka University)

[SCG65-P05] Sedimentary structures within sedimentary gravity flow deposits formed under upper flow regime conditions and their association with sedimentary topography

*Yoshiro Ishihara¹, Yuri ONISHI², Miwa Yokokawa³ (1.Department of Earth System Science, Fukuoka University, 2.Graduate School of Science, Fukuoka University, 3.Osaka Institute of Technology)

[SCG65-P06] Effect of surge-duration on the velocity distribution of turbidity current and resultant cyclic step morphology: PIV measurements of the surge-type turbidity currents in flume experiments

*Miwa Yokokawa¹, Masatomo Miyai¹, Junpei Yamano¹ (1.Osaka Institute of Technology)

[SCG65-P07] Three types of submarine canyons offshore southwest Taiwan

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

[SCG65-P08] Development Processes of Turbidity Currents Toward the Equilibrium State: Examination by Numerical Simulation

*Koji Ohata¹, Hajime Naruse¹ (1.Kyoto University)

[SCG65-P09] Inverse analysis to reconstruct hydraulic conditions of non-steady turbidity currents considering multiple grain-size classes

*Kento Nakao¹, Hajime Naruse¹, Shuichi Tokuhashi² (1.Department of Geology and Mineralogy, Graduate School of Science, Kyoto University, 2.AIST - National Institute of Advanced Industrial Science and Technology Tsukuba (Japan))

Session information