Frequency analysis of the 2004 Sumatra-Andaman earthquake using spectral seismograms

• Autorzy: Wilde-Piórko M. , Duda S. , Grad M.
• Języki publikacji: EN

Abstrakty

EN

Frequency analysis of the Sumatra-Andaman earthquake of 2004, one of the most significant and best-recorded earthquakes, is based on spectral seismograms obtained from their broadband seismograms. The Sumatra-Andaman earthquake is found to have a wide-range frequency content of P-wave radiation during the rupturing process. On the basis of stacking spectral seismograms we distinguished four time events of the rupturing process of a total length of about 540 s. The frequency, fmax, is the highest for the first event (0.163 Hz in time interval 0-88 s), lowest for the second - which is the strongest (0.075 Hz in time interval 88-204 s). For third and fourth events frequencies are similar (0.089 and 0.082 Hz in time intervals 204-452 and 452-537 s, respectively). The frequency also shows an azimuthal dependence (±0.02 Hz). Azimuths for which the frequency, fmax, has maximum and minimum values are 203-222° and 23-42°, respectively. These observations are discussed in relation to previously published papers on this topic.

Słowa kluczowe

EN

Sumatra–Andaman earthquake; spectral seismograms; Butterworth filter

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2011
• Tom: Vol. 59, no. 3
• Strony: 483--501
• Opis fizyczny: Bibliogr. 23 poz.

Twórcy

autor

Wilde-Piórko M.

autor

Duda S.

autor

Grad M.

• Faculty of Physics, Institute of Geophysics, University of Warsaw, Warszawa, Poland,

Bibliografia

• Ammon, C.J., C. Ji, H.-K. Thio, D. Robinson, S. Ni, V. Hjorleifsdottir, H. Kanamori, T. Lay, S. Das, D. Helmberger, G. Ichinose, J. Polet, and D.Wald (2005), Rupture process of the 2004 Sumatra-Andaman earthquake, Science 308, 5725, 1133-1139, DOI: 0.1126/science.1112260.
• Banerjee, P., F.F. Pollitz, and R. Bürgmann (2005), The size and duration of the Sumatra-Andaman earthquake from far-field static offsets, Science 308, 5729, 1769-1772, DOI: 10.1126/science.1113746.
• Bilek, S.L., K. Satake, and K. Sieh (2007), Introduction to the Special Issue on the 2004 Sumatra-Andaman earthquake and the Indian Ocean tsunami, Bull. Seism. Soc. Am. 97, 1A, S1-S5, DOI: 10.1785/0120050633.
• Domanski, B.M. (2007), Source parameters of the 2004 Kaliningrad earthquakes, Acta Geophys. 55, 3, 267-287, DOI: 10.2478/s11600-007-0021-7.
• Duda, S.J., and D. Kaiser (1989), Spectral magnitudes, magnitude spectra and earthquake quantification; the stability issue of the corner period and of the maximum magnitude for a given earthquake, Tectonophysics 166, 1-3, 205-211, 215-219, DOI: 10.1016/0040-1951(89)90214-X.
• Duda, S.J., and S.X. Xu (1988), Broad-band seismograms, band-pass seismograms, and spectral magnitudes for a selection of 1978-1983 explosions – comparison with worldwide earthquakes, Inst. Geophys., Univ. Hamburg.
• Duda, S.J., D. Kaiser, and S. Fasthoff (1989), Broad-band seismograms, band-pass seismograms and spectral magnitudes for a selection of 1984, 1985 and 1986 earthquakes in the Alpide-Himalayan belt, Inst. Geophys., Univ. Hamburg.
• Duda, S.J., J. Saul, and M. Grad (1996), The influence of near-source and near-receiver structure on the spectrum of P waves from nuclear explosions, Acta Geophys. Pol. 44, 1, 1-18.
• Fasthoff, S., and L. Guo (2001), On spectral seismograms - 3D display of seismograms, CTTA 10, 3, 47-51.
• Gusev, A.A., E.M. Guseva, and G.F. Panza (2007), Size and duration of the high-frequency radiator in the source of the 2004 December 26 Sumatra earthquake, Geophys. J. Int. 170, 3, 1119-1128, DOI: 10.1111/j.1365-246X.2007.03368.x.
• Herrmann, R.B., and C.J. Ammon (2007), GSAC – Generic Seismic Application Coding, Version 3.30, 2004.
• Ishii, M., P.M. Shearer, H. Houston, and J.E. Vidale (2005), Extent, duration and speed of the 2004 Sumatra-Andaman earthquake imaged by the Hi-Net array, Nature 435, 933-936, DOI: 10.1038/nature03675.
• Jeffreys, H., and K.E. Bullen (1940), Seismological Tables, Brit. Assoc. for Adv. Sci., London.
• Jenkins, G.M., and D.G.Watts (1968), Spectral Analysis and its Applications, Holden-Day, San Francisco.
• Kennett, B.L.N., and E.R. Engdahl (1991), Traveltimes for global earthquake location and phase identification, Geophys. J. Int. 105, 2, 429-465, DOI: 10.1111/j.1365-246X.1991.tb06724.x.
• Krüger, F., and M. Ohrnberger (2005), Tracking the rupture of the Mw = 9:3 Sumatra earthquake over 1,150 km at teleseismic distance, Nature 435, 937-939, DOI: 10.1038/nature03696.
• Lay, T., H. Kanamori, C.J. Ammon, M. Nettles, S.N. Ward, R.C. Aster, S.L. Beck, S.L. Bilek, M.R. Brudzinski, R. Butler, H.R. DeShon, G. Ekström, K. Satake, and S. Sipkin (2005), The great Sumatra-Andaman earthquake of 26 December 2004, Science 308, 5725, 1127-1133, DOI: 10.1126/science.1112250.
• Liu, N., Q.F. Chen, F.L. Niu, and Y. Chen (2007), Rupture of the 2004 Sumatra-Andaman earthquake inferred from direct P-wave imaging, Chinese Sci. Bull. 52, 14, 1986-1991, DOI: 10.1007/s11434-007-0286-x.
• Nortmann, R., and S.J. Duda (1983), Determination of spectral properties of earthquakes from their magnitudes, Tectonophysics 93, 3-4, 251-275, DOI: 0.1016/0040-1951(83)90283-4.
• Sarkar, D., M. Ravi Kumar, S.J. Duda, and H.K. Gupta (2000), Spectral seismograms, magnitude spectra and source parameters of a selection of Indian plate earthquakes, J. Geodyn. 30, 4, 423-438, DOI: 10.1016/S0264-3707(00)00005-3.
• Tsai, V.C., M. Nettles, G. Ekström, and A.M. Dziewonski (2005), Multiple CMT source analysis of the 2004 Sumatra earthquake, Geophys. Res. Lett. 32, L17304, DOI: 10.1029/2005GL023813.
• Wessel, P., and W.H.F. Smith (1995a), The Generic Mapping Tools GMT Version 3. Technical Reference and Cookbook, SOEST/NOAA.
• Wessel, P., and W.H.F. Smith (1995b), GMT Version 3.0, Reference Manual Pages.