Multidisciplinary and Interdisciplinary (M)
Session Sub-category Intersection(IS)
Session ID M-IS20
Title Interactions of Geosphere-Hydrosphere-Biosphere and Deep-sea Methane Environments
Short Title Deep-sea Methane in Geo-Hydro-Biospheres
Main Convener Name Yusuke Miyajima
Affiliation Geomicrobiology Research Group, Research Institute for Geo-Resources and Environment, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology
Co-Convener 1 Name Miho Asada
Affiliation NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Co-Convener 2 Name Robert Jenkins
Affiliation School of Geosciences and Civil Engineering, College of Science and Engineering, Kanazawa University
Co-Convener 3 Name Shinsuke Aoki
Affiliation Faculty of Agriculture, Kagawa University
Session Language
J
Scope
Methane produced in subseafloor environments is transported to the seafloor and discharged into seawater at cold seeps, mud volcanoes, and hydrothermal vents. The discharged methane and accompanying fluids form unique environments, such as methane hydrates and carbonates, and sustain chemosynthetic ecosystems. Methane and the methane-driven phenomena are closely related to the ocean and global environmental changes, material cycles, and evolution of life, making them a key for better understanding of the interactions among Geosphere-Hydrosphere-Biospheres. Deepening and expanding our knowledge of these processes will also contribute to the sustainable development of human society, including resource utilization, disaster prevention, and biodiversity and ecosystem conservation. This session welcomes latest research topics related to the geophysical background, resources, geobiology, and geochemical origin of methane and accompanying fluids at marine and terrestrial cold seeps, mud volcanoes, and hydrothermal vents from the past to present. Based on these topics, we aim to promote active interactions between scientists from multiple fields and the development of a multidisciplinary research community.
All the presentations in this session are given in Japanese or English. We recommend preparing figures and tables in English.
Presentation Format Oral and Poster presentation
Invited Authors Daniel Smrzka
Time Presentation No Title Presenter
Oral Presentation May 25 PM1
14:00 - 14:15 MIS20-01 Distribution of redeposited beds by cuttings generated by non-riser drilling, off Sakata and Joetsu, Sea of Japan. Mikio Satoh
14:15 - 14:30 MIS20-02 Bathymetric change at the shallow methane hydrate bearing mound during 2013 and 2024, Umitaka Spur, off Joetsu, Japan Miho Asada
14:30 - 14:45 MIS20-03 Larval dispersal and genetic connectivity of deep-sea crustaceans around surface-type methane hydrate-bearing areas Naoki Saito
14:45 - 15:00 MIS20-04 Depth of origin of boron in surface pore fluids around the epicenter of the Noto Peninsula earthquake Tomohiro Toki
15:00 - 15:15 MIS20-05 Discharge of deeply rooted fluids from submarine mud volcanoes in the northern Ryukyu Trench slope Akira Ijiri
Oral Presentation May 25 PM2
15:30 - 15:45 MIS20-06 Emission of dissolved organic carbon from submarine mud volcanoes along the Ryukyu Trench Akira Ijiri
15:45 - 16:00 MIS20-07 Authigenic carbonates related to oil seepage from seafloor sediments – Geologic archives of unique geobiologic ecosystems Daniel Smrzka
16:00 - 16:15 MIS20-08 Controlling Factors on the Biogenic Gas Generation along the Sea of Japan : A Case Study of Niigata Area Ryu Tomida
16:15 - 16:30 MIS20-09 Impacts of sedimentary structures on methane seep-related geochemical properties in the Kujukuri coastal area, eastern Japan Yuki Ota
16:30 - 16:45 MIS20-10 An attempt to correct response time of methane sensor by deconvolution Shinsuke Aoki
Presentation No Title Presenter
Poster Presentation May 25 PM3
MIS20-P01 New sediment samplers for sediment-intrinsic megabenthos sampling of surface-type methane hydrates development Hiroshi Ishida
MIS20-P02 Halogen geochemistry of interstitial water in a gas hydrate field, Amazon Fan offshore Brazil Satoko Owari
MIS20-P03 Source Depth of Sediments in Mud Volcanoes in the Ryukyu Trench to Nankai Trough Rina Fukuchi
MIS20-P04 Evaluation test of strength and drilling resistance of soil simulating methane hydrate-bearing ground Nakamura Kotomi
MIS20-P05 Acoustic blanking and heterogeneities under the seafloor in methane hydrate-bearing zone Hayato MATSUSHITA
MIS20-P06 Potential methane production rates of methanogen cultures and deep subseafloor sediments assessed with 13C stable isotope tracers Yusuke Miyajima