[H-CG23] Turbidity current: from triggers for the generation to the depositional and morphological processes

Mon. May 21, 2018 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Miwa Yokokawa(Osaka Institute of Technology), Norihiro Izumi(Faculty of Engineering, Hokkaido University), Takeshi Nakajima(産業技術総合研究所地圏資源環境研究部門, 共同), Hajime Naruse(Department of Geology and Mineralogy, Graduate School of Science, Kyoto University)

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.

[HCG23-P01] Transition from traction carpet deposits to massive structureless unit at the basal part of a turbidite bed

★Invited Papers

*Yoshiro Ishihara¹, Yuri Onishi², Keisuke Tsuda³, Miwa Yokokawa⁴ (1.Department of Earth System Science Faculty of Science, Fukuoka University, 2.OYO Corporation, 3.Nihon Chiken, 4.Osaka Institute of Technology)

[HCG23-P02] Origin and abrasion process of mud clasts in turbidity currents: A case study of the lower Pleistocene Otadai Formation, Kazusa Group central Japan

*Sojiro Fukuda¹, Hajime Naruse¹ (1.Kyoto University)

[HCG23-P03] The modern depositional and morphological characteristics of the SW Ryukyu subduction zone

*KanHsi Hsiung¹, Kiichiro Kawamura², Toshiya Kanamatsu¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Yamaguchi University)

[HCG23-P04] The modern Kaoping transient fan offshore SW Taiwan: Morphotectonics and development

*Cheng-Shing Chiang¹, Kan-Hsi Hsiung², Ho-Shing Yu³ (1.National Museum of Natural Science, Taiwan, 2.Japan Agency for Marine-Earth Science and Technology, 3.National Taiwan University)

[HCG23-P05] Geochemical fingerprinting of event deposits in Japan Trench by using multivariate analyses of XRF-scanning data

Tobias Schwestermann¹, *Jyh-Jaan Huang¹, Gerold Wefer², Ken Ikehara³, Toshiya Kanamatsu⁴, Arata Kioka¹, Timothy Ian Eglinton⁵, Negar Haghipour⁵, Michael Strasser^1,2 (1.Institute of Geology, University of Innsbruck, Innrain 52, 6020 Innsbruck, Austria, 2.MARUM – Center for Marine Environmental Sciences and Department of Geosciences, University of Bremen, Klagenfurter Str., 28359 Bremen, Germany, 3.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 7, 1-1-1 Higashi, Tsukuba, 305-8567, Japan, 4.Research and Development Center for Earthquake and Tsunami, Japan Agency for Marine-Earth Sciences and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka, 237-0061, Japan, 5.Geological Institute, ETH Zurich, Sonneggstrasse 5, 8092 Zurich, Switzerland)

[HCG23-P06] Estimation of the sea floor events by radiocarbon dating of total organic carbon contained in marine sediment

*Ayaka Nakazawa¹, Juichiro Ashi², Akiko Omura¹, Yosuke Miyairi¹, Yusuke Yokoyama¹ (1.The University of Tokyo, 2.University of Tsukuba)

[HCG23-P07] Identification of earthquake-triggered surficial sediment remobilization and implications on turbidite paleoseismology

Ariana Molenaar¹, *Michael Strasser¹, Jasper Moernaut¹ (1.University of Innsbruck)

[HCG23-P08] Shallow-subsurface event stratigraphy along the hadal trench axis of the Japan Trench using subbottom profiler data

*A. Kioka¹, T. Schwestermann¹, J. Moernaut¹, K. Ikehara², T. Kanamatsu³, M. Strasser^1,4 (1.Institute of Geology, University of Innsbruck, 2.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 3.R&D Center for Earthquake and Tsunami, Japan Agency of Marine Science and Technology (JAMSTEC), 4.MARUM – Center for Marine Environmental Sciences, University of Bremen)

[HCG23-P09] Features of cyclic steps formed due to surge-type turbidity currents: morphology of the steps and grain size distribution

*Kazunori Fujita¹, Isamu Mori¹, Miwa Yokokawa¹, Roberto Fernandez², Matt Czapiga², John Berens², Jeffrey Kwang², Kensuke Naito², Gary Parker², Norihiro Izumi³, Hajime Naruse⁴ (1.Osaka Institute of Technology, 2.University of Illinois, 3.Hokkaido University, 4.Kyoto University)

[HCG23-P10] Experimental Verification of Inverse Analysis of Turbidity Current from Their Deposit by Machine Learning Technique

*Cai Zhirong¹, Hajime Naruse¹, Qifeng Yao¹ (1.Kyoto University)

[HCG23-P11] A new numerical model of turbidity currents considering the vertical flow structure: Development of the two-layer depth-averaged model based on numerical experiments using 2-D RANS model

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

Session information