Local Time Statistical Character and Frequency Spectrum Analysis Based on ISC, SCSN and CRN Seismological Catalogues

doi:10.7523/j.issn.2095-6134.2005.3.014

Abstract

Abstract:

The ISC, SCSN and CRN seismic catalogue data are first transformed to the local time system and the sequence statistics are made, the time-occurring number of earthquakes are set up on the system of local time, and then the frequency spectrum analysis on the earthquake sequence is done to pick up information related to the characteristic period.The results indicate :(1)time-occurring number of earthquake is up to the maximum value at local time 0:00 AM and 1:00 PM while down to the minimum at local time 9:00AM and 7:00 PM ;(2)there are two typical periods of 12h and 24h;(3)The small earthquakes and large earthquakes are different in spatial and temporal distributions.The results of frequency spectrum analyses show that there are not only periods of 12h and 24h connectedwith the diurnal tide and the semidiurnal tide, respectively, but also the periods of 11.7a, 1a, and 17.5a connected with 11-year sunspot cycle, earth revolution, and nearly to ascending node tropical year of the moon, respectively.

Key words: local time, frequency spectrum analysis, earthquake number

CLC Number:

P315.08

FENG Xiang-Dong, WEI Dong-Ping. Local Time Statistical Character and Frequency Spectrum Analysis Based on ISC, SCSN and CRN Seismological Catalogues[J]. , 2005, 22(3): 352-358.

References

[1] Kilston S, Knopoff L.Lunar-solar periodicities of large earthquakes in southern California.Nature, 1983, 304:21～ 25

[2] Shirley JH.Shallow moonquakes and large shallow earthquakes:a temporal correlation.Earth.Planet.Sci.Lett., 1985, 76:241

[3] Robert EW, William HP.Strong correlation of major earthquakes with solid-earth tides in part of the eastern United States.Geology, 1989, 661 ～ 664

[4] Lopes RMC, Malin SRC, Mazzarella A, et al.Lunar and solar triggering of earthquakes.Physics of the Earth and Planetary Interiors, 1990, 59: 127～ 129

[5] Gao W, Liu PX, Xu SX, et al.The relationships between earthquakes and positions of the Sun andMoon(Ⅱ), some temporal characteristics of aftershock sequences.Acta Seismologica Sinica, 1996, 18(3):333～ 339(in Chinese)

[6] Sadeh DS, Meidav M.Search for sideral periodicity in earthquake occurrences.J.Geophys.Res., 1973, 78(32):7709～ 7716

[7] Palumbo A.Lunar and solar tidal components in the occurrence of earthquakes in Italy.Geophys.JR Astr.Soc., 1986, 84:93～ 99

[8] Junzo K.Tides.earthquakes and volcanoes.Science, 2002, l297:348～ 349

[9] Du PR.18.6 years seismic cycle and the preliminary exploration for its cause.Acta GeophysicaSinica, 1994, 37(3):362～ 369(in Chinese with English abstract)

[10] Du PR.18.6 years cycles of large intermediate and deep focus earthquakes in the world' s major seismic regions.Acta Geophysica Sinica, 1996, 39(3):327～ 335(in Chinese with English abstract)

[11] Vidale JE, Agnew DC, Johnstom MJS, et al.Absence of earthquake correlation with Earth tides:an indication of high preseimic fault stress rate. J.Geophys.Res., 1998, 103:24567～ 24572

[12] Wan YG, Wu ZL, Zhou GW, et al.“Stress triggering” between different rupture events in several earthquakes.Acta Seismologia Sinica, 2000, 22(6):568～ 576(in Chinese with English abstract)

[13] BeelerNM, Lockner DA.Why earthquakes correlate weakly with the solid Earth tides:effects of periodic stress on the rate and probability of earthquake occurrence.J.Geophys.Res., 2003, B108, doi :10.1029 2001JB001518

[14] Alon Z, Allan MR.Static stress transfer and earthquake triggering :Nolower threshold in sight ?J.Geophys.Res., 2000, 105(B6):13631～ 13642

[15] Wu XP, Mao W, Huang Y.Astronocial tides and earthquakes.Progress in Astronomy, 2001, 19(1):40～ 46(in Chinese with English abstract)

[16] Huang XY, Wei DP, Chen QF, et al.An analysis on short-wave components of the global stress field.Acta Seismologica Sinica, 2003, 25(1): 40～ 46(in Chinese with English abstract)

[17] http:// www.isc.ac.uk/

[18] http: //www.trinet.org /scsn/ scsn.html

[5] 高伟, 刘浦雄, 许绍燮, 等.地震与太阳、月亮位置的关系(二)———强震余震序列的某些时间特征.地震学报, 1996, 18(3):333 ～ 339

[9] 杜品仁.18.6年地震轮回及其成因初探.地球物理学报, 1994, 37(3):362～ 369

[10] 杜品仁.全球主要地震区中源和深源大地震的 18.6年轮回.地球物理学报, 1996, 37(3):327～ 335

[12] 万永革, 吴忠良, 周公威, 等.几次复杂地震中不同破裂事件之间的“应力触发”问题.地震学报, 2000, 22(6):568～ 576

[15] 吴小平, 冒蔚, 黄雍.天文潮汐与地震.天文学进展,2001, 19(1):45～ 54

[16] 黄玺瑛, 魏东平, 陈棋福, 等.全球观测应力场的短波分量分析.地震学报, 2003, 25(1):40～ 46