利用并行计算方法实现地震活动速率变化参数Z值的空间扫描处理及其计算效能评价

Abstract

Abstract: Nearly 30 years of studies indicate that seismic quiescence may be the medium to long-term precursory phenomenon which contains seismicity rate changes. Z-Test is widely used for significance testing of seismicity rate changes, which is measured by Z-value. As a result of choosing spatial scanning window of fixed number of earthquakes, each window size of grid is usually different, which results in large amount of calculation. In this paper, we have realized the spatial scanning of Z-value based on the self-built cluster consisting of 4 nodes by parallel processing. The preliminary test shows that parallel program can run with high speedup ratio and prarallel efficiency, this is to say, the parallel process method of space scanning of seismicity parameters can be widely used.

Key words: Seismic quiescence, Z-Test, Space scanning, Parallel computing efficiency

CLC Number:

P315.7

LIU Gui-ping, LI Min-feng, LI Sheng-qiang, Wang Bin. Application of Parallel Computing to Spatial Scanning of Seismicity Rate Changes (Z-Value) and its Efficiency Evaluation[J]. EARTHQUAKE, 2009, 29(4): 131-138.

References

[1] Ogata Y. Space-time model for regional seismicity and detection of crustal stress changes[J]. Journal of Geophysical Research-Solid Earth, 2004, 109(B3): 23.
[2] Ohtake M, Matumoto T, Latham G. Seismicity gap near Oaxaca, sourthern Mexico as a probable precursor to a large earthquake[J]. Pure and Applied Geophysics, 1977, 115: 375-385.
[3] Kisslinger C. An experiment in earthquake prediction and the 7 May 1986 Andreanof islands earthquake[J]. Bull Seism Soc Am, 1988, 78: 218-229.
[4] Wyss M, Martirosyan A H. Seismic quiescence before the 1988 M7 Spitak earthquake, Armenia[J]. Geophysical Journal International, 1998, 134(2): 329-340.
[5] Wiemer S, Wyss M. Seismic quiescence before the Landers (M=7.5) and Big Bear(M=6.5) 1992 earthquakes[J]. Bull Seism Soc Am, 1994, 84: 900-916.
[6] Huang Q, Sobolev G A, Nagao T.Characteristics of the seismic quiescence and activation patterns before the M=7.2 Kobe earthquake, January 17, 1995[J]. Tectonophysics, 2001, 337: 99-116.
[7] Sobolev G A, Huangm Q, Nagao T. Phases of earthquake's preparation and by chance test of seismic quiescence anomaly[J]. Journal of Geodynamics, 2002, 33: 413-424.
[8] Yih-Min Wu , Ling-Yun Chiao.Seismic quiescence before the 1999 Chi-Chi, Taiwan, M_W7.6 Earthquake[J]. Bull seism Soc Am, 2006, 96(1): 321-327.
[9] Huang Q, Oncel A O, Sobolev G A. Precursory seismicity changes associated with the M_W=7.4 1999 August 17 Izmit(Turkey) earthquake[J]. Geophysical Journal International, 2002, 151: 235-242.
[10] 戴志阳, 陈宇卫, 傅容珊, 等. 前兆性地震平静研究[J]. 地球物理学进展, 2006, 21(1): 18-24.
[11] Habermann R E. Teleseismic detection in the Aleutian Islands arc[J]. J Geophys Res, 1983, 88: 5056-5064.
[12] Habermann R E. Man-made changes of seismicity rates[J]. Bull Seism Soc Am, 1987, (77): 141-159.
[13] Habermann R E. Seismicity rate variations and systematic changes in magnitudes in teleseismic catalogs[J]. Tectonophysics, 1991, 193(4): 277-289.
[14] Habermann R E. Precursory seismic quiescence: Past, present and future[J]. Pure and Applied Geophysics, 1988, 126(2~4): 279-318.
[15] 陈国良编著. 并行算法结构、算法、编程[M]. 北京: 高等教育出版社, 2003.

Application of Parallel Computing to Spatial Scanning of Seismicity Rate Changes (Z-Value) and its Efficiency Evaluation

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