Global ETD Search
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Showing 1 to 7 of 7 for “"Nankai Trough"”.
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Sediment Heterogeneity and Sand Production in Gas Hydrate Extraction: Daini-Atsumi Knoll, Nankai Trough, Japan
… the 2013 trial at the Daini-Atsumi knoll, Nankai Trough, offshore Japan. Sand production is generally thought to be the result of mechanical and hydrodynamic instability, however it appears the failure mechanism is not the same for all reservoirs and the location of reservoir porosity and …
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Numerical Investigation of Hydrate-bearing Sediment Formation Heterogeneity during Methane Gas Recovery
… north slope of the Daini Atsumi Knoll in Eastern Nankai Trough, Japan. The methane hydrate concentrated zone (MHCZ) was roughly 300 m below the seafloor and 1300 m below sea level, with a dip to the northwest by roughly 20 degrees. For the target MHCZ in Eastern Nankai Trough site, there are …
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Fibre optic monitoring and finite element analysis of well integrity in methane hydrate reservoirs
… integrity are carried out for the case of the Nankai Trough methane hydrate reservoir in Japan, in order to contribute to a better well integrity management. FEA on well construction and reservoir compaction processes as well as cement shrinkage process is conducted. Laboratory experiments are …
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Reflective Planning and Design for Community Resilience: A Case Study in a Vulnerable and Shrinking Japanese Village
… (DPCRPP) in preparation for the anticipated Nankai Trough earthquake and tsunami, expected to occur within the next 20 years with a high probability. The methodology involved developing planning and design proposals, presenting these to officials in Numazu City for feedback, and revising the …
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Bōsai, Tsunami
… situated at the collision plate forming active troughs capable of generating forcefully destructive tsunami waves. The Great East Japan Earthquake that hit the Tohoku region in 2011 exposed disaster planning challenges and a looming demographic crisis in Japanese coastal towns. Despite the …
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The Determination of Lithospheric Rheology and Long-Term Interplate Coupling in Japan: Finite Element Modeling
… there have been great (M>8) earthquakes in the Nankai Trough region, but none that large in the off-Sanriku region.
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Quantification of total microbial biomass and metabolic activity in subsurface sediments
… In another study on sediments from the Nankai Trough microbial abundance and hydrogenase activity data show that both the habitat and the activity of subseafloor sedimentary microbial communities have been impacted by seismic activities. An increase in hydrogenase activity near the fault …