GeoFEM Kinematic Earthquake Cycle Simulation in Southwest Japan

2004 ◽  
pp. 2069-2090
Author(s):  
Mamoru Hyodo ◽  
Kazuro Hirahara
Keyword(s):  
Earthquake Cycle ◽  
Southwest Japan ◽  
Cycle Simulation ◽  
Earthquake Cycle Simulation

Toward Advanced Earthquake Cycle Simulation

2009 ◽  
Vol 4 (2) ◽  
pp. 99-105
Author(s):  
Kazuro Hirahara ◽  
Keyword(s):  
Earthquake Cycle ◽  
Activity Data ◽  
Megathrust Earthquake ◽  
Friction Laws ◽  
Megathrust Earthquakes ◽  
Cycle Simulation ◽  
Simulation Based ◽  
Rate And State Friction ◽  
Earthquake Cycle Simulation ◽  
Earthquake Cycles

Recent earthquake cycle simulation based on laboratory derived rate and state friction laws with super-parallel computers have successfully reproduced historical earthquake cycles. Earthquake cycle simulation is thus a powerful tool for providing information on the occurrence of the next Nankai megathrust earthquake, if simulation is combined with data assimilation for historical data and recently ongoing crustal activity data observed by networks extending from the land to the ocean floor. Present earthquake cycle simulation assumes simplifications in calculation, however, that differ from actual complex situations. Executing simulation relaxing these simplifications requires huge computational demands, and is difficult with present supercomputers. Looking toward advanced simulation of Nankai megathrust earthquake cycles with next-generation petaflop supercomputers, we present 1) an evaluation of effects of the actual medium in earthquake cycle simulation, 2) improved deformation data with GPS and InSAR and of inversion for estimating frictional parameters, and 3) the estimation of the occurrence of large inland earthquakes in southwest Japan and of Nankai megathrust earthquakes.

Earthquake cycle simulation with a revised rate- and state-dependent friction law

2013 ◽  
Vol 600 ◽  
pp. 196-204 ◽  
Author(s):  
Nobuki Kame ◽  
Satoshi Fujita ◽  
Masao Nakatani ◽  
Tetsuya Kusakabe
Keyword(s):  
Earthquake Cycle ◽  
Friction Law ◽  
Cycle Simulation ◽  
State Dependent ◽  
Earthquake Cycle Simulation

scholarly journals Fast Computation of Quasi-Dynamic Earthquake Cycle Simulation with Hierarchical Matrices

2011 ◽  
Vol 4 ◽  
pp. 1456-1465 ◽  
Author(s):  
M. Ohtani ◽  
K. Hirahara ◽  
Y. Takahashi ◽  
T. Hori ◽  
M. Hyodo ◽  
...  
Keyword(s):  
Hierarchical Matrices ◽  
Fast Computation ◽  
Earthquake Cycle ◽  
Cycle Simulation ◽  
Earthquake Cycle Simulation

Characterization of groundwater based on δ2H, δ18O and Cl− concentration beneath the Osaka Plain, Southwest Japan

2019 ◽  
Vol 53 (4) ◽  
pp. 235-247
Author(s):  
Tsuyoshi Shintani ◽  
Harue Masuda ◽  
Kaori Okazaki ◽  
Emilie Even ◽  
Masahiko Ono ◽  
...  
Keyword(s):  
Southwest Japan

Research on Protection Methods of Embedded Operating System Software Based on Hardware Compiler

2013 ◽  
Vol 443 ◽  
pp. 556-560
Author(s):  
Gao Ming He
Keyword(s):  
Operating System ◽  
Practical Significance ◽  
Embedded Operating System ◽  
System Software ◽  
Software Protection ◽  
Performance Loss ◽  
Cycle Simulation ◽  
Protection Technology ◽  
Program Flow ◽  
High Level

This paper describes a system; CODESSEAL can provide protection and evaluation to system software. CODESSEAL was designed to protect embedded systems with sufficient expertise and resources to capture attack equipment and manipulator, not only to protect software but also to protect hardware. By using the reconfigurable hardware allows CODESSEAL to provide confidentiality, integrity of security services and a platform-independent program flow without having to redesign the processor. System uses software and data protection technology and designs cycle simulation methods for data analysis. Experimental results show that the protected instructions and data with a high level of safety can be realized a low, which in most cases the performance loss can be reduced to below 10%, so the research of software protection methods of the embedded operating system of hardware compiler has important practical significance.

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