Estimation of crustal Qβ in the NW Himalaya using teleseismic broadband SH waveforms of the 8 October 2005 South Asian earthquake

• Autorzy: Kumar S.
• Języki publikacji: EN

Abstrakty

EN

The average value of the intrinsic shear wave quality factor, Qβ, for the 15 km of the upper crust in the NW Himalaya is estimated. Thirty-two teleseismic broadband SH and sSH waveforms of 8 October 2005 South Asian earthquake (Mw = 7.6), from sixteen Global Seismographic Network stations of the National Earthquake Information Center network have been used. The selected windows of the direct and depth phases have been Fourier transformed and smoothed using the Hamming and Tuckey technique. Ratio of the smoothed spectra of depth and direct phases are obtained in the frequency range 0.2-1.5 Hz. A straight line is fitted in the least-square sense to the spectral ratio versus frequency. The value of Q ß is estimated from the slope of the line. The frequency independent average value of Q ß is estimated to be 218±56.

Słowa kluczowe

EN

seismic hazard; shear wave analysis; intrinsic attenuation; NW Himalaya; 8 October 2005 South Asian earthquake

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2010
• Tom: Vol. 58, no. 4
• Strony: 645--660
• Opis fizyczny: Bibliogr. 59 poz.

Twórcy

autor

Kumar S.

• Wadia Institute of Himalaya Geology, Dehra Dun, India,

Bibliografia

• Abercrombie, R., and P. Leary (1993), Source parameters of small earthquakes recorded at 2.5 km depth, Cajon Pass, southern California: Implications for earthquake scaling, Geophys. Res. Lett. 20, 14, 1511-1514.
• Aki, K. (1980a), Attenuation of shear-waves in the lithosphere for frequencies from 0.05 to 25 Hz, Phys. Earth Planet. Int. 21, 1, 50-60.
• Aki, K. (1980b), Scattering and attenuation of shear waves in the lithosphere, J. Geophys. Res. 85, B11, 6496-6504.
• Aki, K., and B. Chouet (1975), Origin of coda waves: Source, attenuation, and scattering effects, J. Geophys. Res. 80, 23, 3322-3342.
• Aki, K., and P.G. Richards (1980), Quantitative Seismology, Theory and Methods, Vol. I, W.H. Freeman, San Francisco CA, 535 pp.
• Akinci, A., and H. Eyidoğan (1996), Frequency-dependent attenuation of S and coda waves in Erzincan region (Turkey), Phys. Earth Planet. Int. 97, 1-4, 109-119.
• Baker, D.M., R.J. Lillie, R.S. Yeats, G.D. Johnson, M. Yousuf, and A.S. Hamid Zamin (1988), Development of the Himalayan frontal thrust zone: Salt Range, Pakistan, Geology 16, 1, 3-7.
• Banerjee, P., and R. Bürgmann (2002), Convergence across the northwest Himalaya from GPS measurements, Geophys. Res. Lett. 29, 13, 1652.
• Båth, M. (1974), Spectral Analysis in Geophysics, Elsevier, Amsterdam, 563 pp.
• Bettinelli, P., J.P. Avouac, M. Flouzat, F. Jouanne, L. Bollinger, P. Willis, and G.R. Chitrakar (2006), Plate motion of India and interseismic strain in the Nepal Himalaya from GPS and DORIS measurements, J. Geodesy 80, 8-11, 567-589.
• Bilham, R., K. Larson, J. Freymueller, F. Jouanne, P. Le Fort, P. Leturmy, J.L. Mugnier, J.F. Gamond, J.P. Glot, J. Martinod, N.L. Chaudury, G.R. Chitrakar, U.P. Gautam, B.P. Koirala, M.R. Pandey, R. Ranabhat, S.N. Sapkota, P.L. Shrestha, M.C. Thakuri, U.R. Timilsina, D.R. Tiwari, G. Vidal, C. Vigny, A. Galy, and B. de Voogd (1997), GPS measurements of present-day convergence across the Nepal Himalaya, Nature 386, 6620, 61-64.
• Bowman, J.R. (1988), Body wave attenuation in the Tonga subduction zone, J. Geophys. Res. 93, B3, 2125-2139.
• Chandrasekaran, A.R., and J.D. Das (1994), Evaluation of factor-Q from strong motion records, Proceedings of 10th Symposium on Earthquake Engineering 1, 105-113.
• Chen, Ji (2005), Inversion by Chen Ji available at http://earthquake.usgs.gov/earthquakes/eqinthenews/2005/usdyae/finitefault/.
• Console, R., and A. Rovelli (1981), Attenuation parameters for Friuli region from strong-motion accelerogram spectra, Bull. Seism. Soc. Am. 71, 6, 1981-1991.
• Crust2 (2000), The global crustal model CRUST2 is available at http://mahi.ucsd. edu/Gabi/rem.html.
• Dominguez, T., C.J. Rebollar, and R.R. Castro (1997), Regional variations of seismic attenuation of Lg waves in southern Mexico, J. Geophys. Res. 102, B12, 27,501-27,509.
• Flanagan, M.P., and D.A. Wiens (1998), Attenuation of broadband P and S waves in Tonga: Observations of frequency dependent Q, Pure Appl. Geophys. 153, 2-4, 345-375.
• Gupta, S.C., V.N. Singh, and A. Kumar (1995), Attenuation of coda waves in the Garhwal Himalaya India, Phys. Earth Planet. Int. 87, 3-4, 247-253.
• Gupta, S.C., K. Ashwani, V.N. Singh, and S. Basu (1996), Lapse-time dependence of Qc in the Garhwal Himalaya, Bull. Ind. Soc. Earthq. Tech. 33, 147-159.
• Gupta, S.C., S.S. Teotia, S.S. Rai, and N. Gautam (1998), Coda Q estimates in the Koyna region, India, Pure Appl. Geophys. 153, 2-4, 713-731.
• Hough, S.E. (1997), Empirical Green’s function analysis: Taking the next step, J. Geophys. Res. 102, B3, 5369-5384.
• Hough, S.E., and J.G. Anderson (1988), High frequency spectra observed at Anza, California: Implications for the Q structure, Bull. Seism. Soc. Am. 78, 692-707.
• Hough, S.E., J.M. Lees, and F. Monastero (1999), Attenuation and source properties at the Coso Geothermal Area California, Bull. Seism. Soc. Am. 89, 1606-1619.
• Jin, A., and K. Aki (1986), Temporal change in coda Q before the Tangshan earthquake of 1976 and the Haicheng earthquake of 1975, J. Geophys. Res. 91, B1, 665-673.
• Kanao, M., and K. Ito (1992), Attenuation of Coda Waves in the Source Area of the 1990 July 16 Luzon Earthquake, Philippines, Bull. Disas. Prev. Res. Inst. Of Kyoto Univ. 42, 2, 1-365.
• Kazuo, Y., H. Sato, Y. Iio, H. Ito, T. Ohminato, and M. Ohtake (1993), Frequencydependent Attenuation of High-frequency P and S Waves in the Upper Crust in Western Nagano Japan, Pure Appl. Geophys. 153, 489-502.
• Khattri, K.N. (1992), Local seismic investigation in the Garhwal-Kumaon Himalayas, Mem. Geol. Soc. Ind. 23, 45-66.
• Kinoshita, S. (1994), Frequency-dependent attenuation of shear waves in the crust of the southern Kanto area Japan, Bull. Seism. Soc. Am. 84, 1387-1396.
• Krishna, V.G., C.V.R.K. Rao, H.K. Gupta, D. Sarkar, and M. Baumbach (1999), Crustal seismic velocity structure in the epicentral region of the Latur earthquake (September 29, 1993) southern India: inferences from model ling of the aftershock seismograms, Tectonophysics 304, 3, 241-255.
• Kumar, D. (2005), Estimation of crustal Qβ in the Ganga Basin using teleseismic broad-band SH waveforms for the 1988 Nepal–India border earthquake, J. Asian Earth Sci. 25, 1, 69-75.
• Kumar, N., I.A. Parvez, and H.S. Virk (2005), Estimation of coda wave attenuation for NW Himalayan region using local earthquakes, Phys. Earth Planet. Int. 151, 3-4, 243-258.
• Kumar, N., J. Sharma, B.R. Arora, and S. Mukhopadhyaya (2006), Imaging deep structures through the inversion of earthquake data: an example from Kangra-Chamba region of Himachal Himalaya: DCS-DST News 16(1), 7-8.
• Kumar, S., and T. Sato (2003), Compressional and Shear wave velocities in the crust beneath the Garhwal Himalaya North India, J. Him. Geol. 24, 77-85.
• Kumar, S., R. Chander, and K.N. Khattri (1987), Compressional wave velocity in the second crustal layer in Garhwal Himalaya, J. Assoc. Expl. Geophys. 8, 219-225.
• Kumar, S., S.G. Wesnousky, T.K. Rockwell, D. Regona, V.C. Thakur, and G.G. Seitz, (2001), Earthquake recurrence and rupture dynamics of Himalayan Frontal Thrust India, Science 294, 5550, 2328-2331.
• Kvamme, L.B., and J. Havskov (1989), Q in southern Norway, Bull. Seism. Soc. Am. 79, 1575-1588.
• Lavé, J., and J.P. Avouac (2000), Active folding of fluvial terraces across the Siwaliks Hills, Himalayas of Central Nepal, J. Geophys. Res. 105, B3, 5735-5770.
• Leary, P., and R. Abercrombie (1993), Frequency dependent crustal scattering and absorption at 5-160 Hz from coda decay observed at 2.5 km depth, Geophys. Res. Lett. 21, 11, 971-974.
• Lee, K.S., A.P. William, and S. James (1989), Site-dependent coda Q at Mono Craters, California, Bull. Seism. Soc. Am. 79, 5, 1559-1574.
• Mandal, P., and B.K. Rastogi (1998), A frequency-dependent relation of coda Qc for Koyna-Warna region, India, Pure Appl. Geophys. 153, 1, 163-177.
• Mitchell, B.J. (1980), Frequency dependence of shear wave internal friction in the continental crust of eastern North America, J. Geophys. Res. 85, B10, 5212-5218.
• Mitchell, B.J. (1981), Regional variation and frequency dependence on Qb in the crust of the United States, Bull. Seism. Soc. Am. 71, 1531-1538.
• Mukhopadhyay, S., and C. Tyagi (2007), Lapse time and frequency-dependent attenuation characteristics of coda waves in the northwestern Himalayas, J. Seismol. 11, 2, 149-158.
• Nakata, T. (1989), Special Paper 232, Active faults of the Himalaya of India and Nepal, in tectonics of the western Himalayas. In: L.L. Malinconico and R.J. Lillie (eds.), Geol. Soc. Am. 232, Boulder, CO, 243-264.
• Pulli, J.J. (1984), Attenuation of coda waves in New England, Bull. Seism. Soc. Am. 74, 1149-1166.
• Pulli, J.J., and K. Aki (1981), Attenuation of seismic waves in the lithosphere: comparison of active and stable areas. In: J.E. Beavers (ed.), Earthquakes and Earthquake Engineering: the Eastern US, Ann Arbor Science Publishers, Ann Arbor, MI, 129-141.
• Reha, S. (1984), Q determined from local earthquakes in the South Carolina coastal plain, Bull. Seism. Soc. Am. 74, 2257-2268.
• Roecker, S.W. (1982), Velocity structure of the Pamir-Hindu Kush region: possibile evidence of subducted crust, J. Geophys. Res. 87, B2, 945-959.
• Roecker, S.W., B. Tucker, J. King, and D. Hatzfeld (1982), Estimates of Q in central asia as a function of frequency and depth using the coda of locally recorded earthquakes, Bull. Seism. Soc. Am. 72, 1, 129-149.
• Roth, E.G., D.A. Wiens, L.M. Dorman, J. Hildebrand, and S.C. Webb (1999), Seismic attenuation tomography of the Tonga-Fiji region using phase pair methods, J. Geophys. Res. 104, B3, 4795-4809.
• Singh, D.D. (1991), Anelasticity of the crust and upper mantle beneath north and central India from the inversion of observed Love and Rayleigh wave attenuation data, Pure Appl. Geophys. 135, 4, 545-558.
• Singh, S., and R.B. Herrmann (1983), Regionalization of crustal coda Q in the Continental United States, J. Geophys. Res. 88, B1, 527-538.
• Singh, S.K., M. Ordaz, R.S. Dattatrayam, and H.K. Gupta (1999), A spectral analysis of the May 21, 1997, Jabalpur, India earthquake (Mw ¼ 5.8) and estimation of ground motion from future earthquakes in the Indian shield region, Bull. Seism. Soc. Am. 89, 1620-1630.
• Singh, S.K., A. Iglesias, R.S. Dattatrayam, B.K. Bansal, S.S. Rai, X. Perez-Campos, G. Suresh, P.R. Baidya, and J.L. Gautam (2006), Muzaffarabad earthquake of 8 October 2005 (Mw 7.6): A preliminary report on source characteristics and recorded ground motion, Current Science 91, 689-695.
• Steensma, G.J., and N.N. Biswas (1988), Frequency dependent characteristics of coda wave quality factor in central and southcentral Alaska, Pure Appl. Geophys. 128, 1-2, 295-307.
• Vallée, M. (2005), Inversion by Martin Vallée available at http://geoazur.oca.eu/ spip.php?article112var_recherche=SEISME/FPAKISTAN/081005/note1.html
• Van Eck, T. (1988), Attenuation of coda waves in the Dead Sea region, Bull. Seism. Soc. Am. 78, 770-779.
• Zhou, R., F. Tajima, and P.L. Stoffa (1995), Earthquake source parameter determinationusing genetic algorithms, Geophys. Res. Lett. 22, 4, 517-520.