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Seismic moments of Taiwan’s earthquakes evaluated from a regional broadband array

Abstract

We have taken the seismic moment (Mo) values of 79 earthquakes occurring in the Taiwan region that have been published in the Global centroid-moment tensor (CMT) and regional Broadband Array in Taiwan for Seismology (BATS) catalogues for the period 1996–2005 and compared the values determined from the global and regional networks, respectively. MoG and MoB are used to denote the Mo values published in the Global CMT and regional BATS catalogues, respectively. Our results show that MoB linearly correlates with MoG and that MoB is, on average, approximately equal to 0.37MoG. This difference may be caused by the use of shorter period seismic waves in BATS for estimating MoB. The moment magnitude evaluated from regional BATS seismograms is about 0.3 less than that estimated from global data.

References

  • Aki, K., Generation and propagation of G waves from the Niigata earthquake of June 16, 1964, Bull. Earthq. Res. Inst. Tokyo Univ., 44, 23–88, 1966.

    Google Scholar 

  • Aki, K., Sealing law of seismic spectrum, J. Geophys. Res., 72, 1217–1232, 1967.

    Article  Google Scholar 

  • Ben-Menahem, A., S. J. Singh, and F. Solomon, Static deformation of a spherical earth model by internal dislocations, Bull. Seismol. Soc. Am., 59, 813–853, 1969.

    Google Scholar 

  • Burridge, R. and L. Knopoff, Body force equivalents for seismic dislocations, Bull. Seismol. Soc. Am., 54, 1875–1888, 1964.

    Google Scholar 

  • Dziewonski, A. M., T. A. Chou, and J. H. Woodhouse, Determination of earthquake source parameters from waveform data for studies of global and regional seismicity, J. Geophys. Res., 86, 2825–2852, 1981.

    Article  Google Scholar 

  • Hanks, T. C. and H. Kanamori, A moment magnitude scale, Bull. Seismol. Soc. Am., 84(B5), 2348–2350, 1979.

    Google Scholar 

  • Huang, M. W., Estimates of seismic radiated energies and seismic moments of the aftershocks of the 1999 Chi-Chi, Taiwan, earthquake using strong-motion data, Ph.D. Diss., Institute of Geophysics, National Central University, 141 pp, 2006.

    Google Scholar 

  • Huang, M. W. and J. H. Wang, Scaling of displacement spectra of near-fault seismograms of the 1999 Chi-Chi, Taiwan, earthquake, Geophys. Res. Lett., 29(10), 1442, doi:10.1029/2001GL014021, 2002.

    Article  Google Scholar 

  • Huang, M. W., J. H. Wang, R. D. Hwang, and K. C. Chen, Estimates of source parameters of two large aftershocks of the 1999 Chi-Chi, Taiwan, earthquake in the Chia-Yi area, Terr. Atmo. Ocean, 13, 299–312, 2002.

    Google Scholar 

  • Hwang, R. D., J. H. Wang, B. S. Huang, K. C. Chen, W. G. Huang, T. M. Chang, H. C. Chiu, and C. C. P. Tsai, Estimates of stress drop from near-field seismograms of the Ms7.6 Chi-Chi, Taiwan, earthquake of September 20, 1999, Bull. Seismol. Soc. Am., 91, 1158–1166, 2001.

    Article  Google Scholar 

  • Kanamori, H. and E. E. Brodsky, The physics of earthquakes, Rep. Prog. Phys., 67, 1429–1496, 2004.

    Article  Google Scholar 

  • Kao, H. and P. R. Jian, Source parameters of regional earthquakes in Taiwan: July 1995-December 1996, Terr. Atmo. Ocean, 10, 585–604, 1999.

    Google Scholar 

  • Kao, H. and P. R. Jian, Seismogenic patterns in the Taiwan region: Insights from source parameter inversion of BATS data, Tectonophys., 333, 179–198, 2001.

    Article  Google Scholar 

  • Kao, H., P. R. Jian, K. F. Ma, B. S. Huang, and C. C. Liu, Moment-tensor inversion for offshore earthquakes east of Taiwan and their implications to regional collision, Geophys. Res. Lett., 25, 3619–3622, 1998.

    Article  Google Scholar 

  • Kao, H., Y. H. Liu, and P. R. Jian, Source parameters of regional earthquakes in Taiwan: January-December 1997, Terr. Atmo. Ocean, 12, 431–439, 2001.

    Google Scholar 

  • Kao, H., Y H. Liu, W. T. Liang, and W. P. Chen, Source parameters of regional earthquakes in Taiwan: 1999-2000 including the Chi-Chi earthquake sequence, Terr. Atmo. Ocean, 13, 279–298, 2002.

    Google Scholar 

  • Lee, S. J., K. F. Ma, and H. W. Chen, Three dimensional dense strong motion waveform inversion for the rupture process of the 1999 Chi-Chi, Taiwan, earthquake, J. Geophys. Res., 111, B11308, doi:10. 1029/2005JB004097, 2006.

    Article  Google Scholar 

  • Liang, W. T., Y. H. Liu, and H. Kao, Source parameters of regional earthquakes in Taiwan: January-December, 2001, Terr. Atmo. Ocean, 14, 249–260, 2003.

    Google Scholar 

  • Liang, W T., Y. H. Liu, and H. Kao, Source Parameters of Regional Earthquakes in Taiwan: January-December, 2002, Terr. Atmo. Ocean, 15, 727–741, 2004.

    Google Scholar 

  • Lin, C. H., Active continental subduction and crustal exhumation: the Taiwan orogeny, Terra Nova, 14, 281–287, 2002.

    Article  Google Scholar 

  • Ma, K. F., C. T. Lee, Y B. Tsai, T. C. Shin, and J. Mori, The Chi-Chi, Taiwan earthquake: Large surface displacements on an inland thrust fault, Eos Trans., AGU, 80, 605–611, 1999.

    Article  Google Scholar 

  • Maruyama, T., On the force equivalents of dynamic elastic dislocations with reference to the earthquake mechanism, Bull. Earthq. Res. Inst. Tokyo Univ., 41, 467–486, 1963.

    Google Scholar 

  • Molnar, P., Average regional strain due to slip on numerous faults of different orientations, J. Geophys. Res., 88(B8), 6430–6432, 1983.

    Article  Google Scholar 

  • Patton, H. J. and G. Zandt, Seismic moment tensors of western U.S. earthquakes and implications for the tectonic stress, J. Geophys. Res., 96(B11), 18245–18259, 1991.

    Article  Google Scholar 

  • Ritsema, J. and T. Lay, Rapid source mechanism determination of large (Mw 5) earthquakes in the western United States, Geophys. Res. Lett., 20, 1611–1614, 1993.

    Article  Google Scholar 

  • Romanowicz, B., D. Dreger, M. Pasyanos, and R. Uhrhammer, Monitoring of strain release in central and northern California using broadband data, Geophys. Res. Lett., 20, 1643–1646, 1993.

    Article  Google Scholar 

  • Steketee, J. A., Some geophysical applications of the elasticity theory of dislocations, Can. J. Phys., 36, 1168–1197, 1958.

    Article  Google Scholar 

  • Thio, H. K. and H. Kanamori, Moment-tensor inversions for local earthquakes using surface waves recorded at TERRAscope, Bull. Seismol. Soc. Am., 85, 1021–1038, 1995.

    Google Scholar 

  • Tsai, Y B., T. L. Teng, J. M. Chiu, and H. L. Lin, Tectonic implications of the seismicity in the Taiwan region, Memoir Geol. Soc. China, 2, 13–41, 1977.

    Google Scholar 

  • Wang, J. H., Studies of earthquake seismology in Taiwan during the 1897-1996 period, J. Geol. Soc. China, 41, 291–336, 1998.

    Google Scholar 

  • Wu, F. T, Recent tectonics of Taiwan, J. Phys. Earth, 26, Suppl., S265–S299, 1978.

    Article  Google Scholar 

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Correspondence to Kou-Cheng Chen.

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Chen, KC., Liang, WT., Liu, YH. et al. Seismic moments of Taiwan’s earthquakes evaluated from a regional broadband array. Earth Planet Sp 60, 559–564 (2008). https://doi.org/10.1186/BF03353118

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  • DOI: https://doi.org/10.1186/BF03353118

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