Institution
Japan Oil Gas and Metals National Corporation (Japan)
Company•Tokyo, Japan•
About: Japan Oil Gas and Metals National Corporation (Japan) is a company organization based out in Tokyo, Japan. It is known for research contribution in the topics: Catalysis & Syngas. The organization has 317 authors who have published 288 publications receiving 2483 citations. The organization is also known as: Sekiyu ten'nen gasu kinzoku kōbutsu shigen kikō.
Topics: Catalysis, Syngas, Clathrate hydrate, Catalyst support, Hydrocarbon
Papers published on a yearly basis
Papers
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05 May 2014262 citations
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TL;DR: In this paper, the authors used pressure core characterization tools to obtain geomechanical, hydrological, electrical, and biological properties under in situ pressure, temperature, and restored effective stress conditions.
180 citations
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01 Jan 2010
111 citations
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TL;DR: The results suggest that the flexibility and applicability of this new AMD treatment approach could be improved by controlling the dissolved Si concentration prior to the ferrite formation step.
108 citations
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TL;DR: In this article, the authors employ coupled multiphase flow and geomechanical modeling, and show that observed crustal deformations and seismicity could have been driven by upwelling of deep CO2-rich fluids around the intersection of two fault zones: the regional east Nagano earthquake fault and the conjugate Matsushiro fault.
Abstract: [1] In Matsushiro, central Japan, a series of more than 700,000 earthquakes occurred over a 2-year period (1965–1967) associated with a strike-slip faulting sequence. This swarm of earthquakes resulted in ground surface deformations, cracking of the topsoil, and enhanced spring outflows with changes in chemical compositions, as well as carbon dioxide (CO2) degassing. Previous investigations of the Matsushiro earthquake swarm have suggested that migration of underground water and/or magma may have had a strong influence on the swarm activity. In this study, employing coupled multiphase flow and geomechanical modeling, we show that observed crustal deformations and seismicity could have been driven by upwelling of deep CO2-rich fluids around the intersection of two fault zones: the regional east Nagano earthquake fault and the conjugate Matsushiro fault. We show that the observed spatial evolution of seismicity along the two faults and magnitudes surface uplift are convincingly explained by a few megapascals of pressurization from the upwelling fluid within the critically stressed crust, a crust under a strike-slip stress regime near the frictional strength limit. Our analysis indicates that the most important cause for triggering of seismicity during the Matsushiro swarm was the fluid pressurization with the associated reduction in effective stress and strength in fault segments that were initially near critically stressed for shear failure. Moreover, our analysis indicates that a 2-order-of-magnitude permeability enhancement in ruptured fault segments may be necessary to match the observed time evolution of surface uplift. We conclude that our hydromechanical modeling study of the Matsushiro earthquake swarm shows a clear connection between earthquake rupture, deformation, stress, and permeability changes, as well as large-scale fluid flow related to degassing of CO2 in the shallow seismogenic crust. Thus our study provides further evidence of the important role of deep fluid sources in earthquake fault dynamics and surface deformations.
104 citations
Authors
Showing all 317 results
Name | H-index | Papers | Citations |
---|---|---|---|
Kimihito Suzuki | 21 | 88 | 1600 |
Junzo Kasahara | 20 | 88 | 1394 |
Kiyofumi Suzuki | 20 | 50 | 1271 |
Kohei Urasaki | 16 | 28 | 967 |
Jun Matsushima | 15 | 89 | 753 |
Tetsuya Fujii | 14 | 29 | 753 |
Koji Yamamoto | 12 | 29 | 1055 |
Tatsuo Saeki | 11 | 25 | 517 |
Takashi Akai | 11 | 35 | 418 |
Takeshi Minami | 10 | 54 | 331 |
Mikio Kobayashi | 10 | 64 | 563 |
Osamu Takano | 9 | 50 | 480 |
Satoru Takahashi | 9 | 14 | 326 |
Tetsuya Fujii | 9 | 15 | 866 |
Fuyuki Yagi | 8 | 44 | 281 |