Abstract
In this paper, the investigations on seismotectonic and intensity evaluations of epicentral and meizoseismal regions in Muzaffarabad earthquake—8 Oct. 2005, Mw 7.6—are summarized using The European Macroseismic Scale (EMS-98). The observations are compiled based on the field investigations and isoseismal map. The results show that the isoseismals are elongated parallel to the reactivated Muzaffarabad fault, and the attenuation is high in the direction normal to the fault compared with the direction parallel to it. The geotechnical investigations in Muzaffarabad Valley have helped the authors to assign intensity values in the localities where some huge landslides are observed. Finally, the empirical laws, previously developed for intensity attenuation in Iran in EMS-98 scale, are compared with the intensity observations here. The results are roughly consistent with the general form of attenuation laws. However, it is found that the intensity attenuations are different in the directions normal and parallel to the fault.
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References
Armbruster J, Seeber L, Jacob KH (1978) The northwestern termination of the Himalayan mountain front: active tectonics from microearthquakes. J Geophys Res 83:269–282. doi:10.1029/JB083iB01p00269
Associated Press (2005) web site http://www.ap.org/, October 2005
Avouac JP, Ayoub F, Leprince S, Konca O, Helmberger DV (2006) The 2005, Mw 7.6 Kashmir earthquake: sub-pixel correlation of ASTER images and seismic waveforms analysis. Earth Planet Sci Lett 249:516–528. doi:10.1016/j.epsl.2006.06.025
Gee ER (1980) Pakistan geological salt range series; (6 sheets, scale 1: 50,000). Directorate of overseas surveys, UK, for the Government of Pakistan & Geological Survey of Pakistan
Geological Survey of Pakistan (GSP) (2005) web site; http://www.gsp.gov.pk/, October 2005 to December 2005
Grunthal G (ed) (1998) European Macroseismic Scale 1998, http://www.gfz-potsdam.de/pb1/pg2/ems_new/INDEX.HTM
Kazmi AH, Jan MQ (1997) Geology and tectonics of Pakistan. Graphic, Karachi
Khwaja AA, MonaLisa, Khan SA, Chaudhry QZ, Rafiq M, Khan AT (2003) Recent seismic activity along the western margin of the Nanga Parbat Haramosh Massif, Pakistan. Islamabad J Sci 13(1):18–27
Madin IP, Lawrence RD, Ur-Rehman S (1989) The northwestern Nanga Parbat-Haramosh Massif; evidence for crustal uplift at the northwestern corner of the Indian craton. In: Malinconico LL, Lillie RJ (eds) Tectonics and geophysics of the Western Himalaya, vol 232. Geological Society of America, Special Papers, pp. 169–182
MonaLisa (2008) Recent seismic activity in the NW Himalayan Fold and Thrust Belt, Pakistan: focal mechanism solution and tectonic implications. Geological Society of London, Special Publications (in press)
MonaLisa, Khwaja AA, Qaiser M (2002) Focal mechanism studies of Kohat and Northern Potwar deformed zone. Geol Bull Univ Peshawar 35:85–95
MonaLisa, Khan SA, Khwaja AA (2004) Focal mechanism studies of North Potwar deformed zone (NPDZ), Pakistan. Acta Seismol Sin China 17:255–261. doi:10.1007/s11589-004-0047-8
MonaLisa, Khwaja AA, Jan MQ (2008) October 08, 2005 Muzaffarabad earthquake: seismological investigations and probabilistic estimation of peak ground accelerations. Curr Sci 94(9):1158–1166
Pande P, Joshi DD, Kandpal GC, Joshi KC, Singh RJ, Singh BK, et al (2006) A geoseismological report on 8th October 2005 Kashmir earthquake. Geological Survey of India
Parsons T, Yeats RS, Yagi Y (2006) Static stress change from the 8 October, 2005 M = 7.6 Kashmir earthquake. Geophys Res Lett 33:LO6304. doi:10.1029/2005GL025429
Pathier E, Fielding EJ, Wright TJ, Walker R, Parsons BE, Hensley S (2006) Displacement field and slip distribution of the 2005 Kashmir earthquake from SAR imagery. Geophys Res Lett 33:L20310. doi:10.1029/2006GL027193
Seeber L, Armbruster J (1979) In: Farah A, DeJong KA (eds) Seismicity of the Hazara arc in northern Pakistan: decollement vs. basement faulting, in Geodynamics of Pakistan. Geol. Surv. of Pakistan, Quetta, pp. 131–142
Sercombe WJ, Pivnik DA, Wilson WP, Albertin ML, Beck RA, Stratton MA (1998) Wrench faulting in the northern Pakistan foreland. AAPG Bull 82:2000–2030
Treloar PJ, Rex DC, Guise PG, Coward MP, Searle MP, Windley BF, et al (1989) K-Ar and Ar-Argeochronology of the Himalayan collision in NW Pakistan: constraints on the timing of collision deformation, metamorphism and uplift tectonic. Tectonics 4:881–909. doi:10.1029/TC008i004p00881
Verma RK, ChandraSekhar CH (1986) Focal mechanism solutions and nature of plate movements in Pakistan. J Geodyn 5:331–351. doi:10.1016/0264-3707(86)90013-X
Yielding G, Khurshid A, Ahmad S, Davison I, Jackson JA, King GCP, Lin Ban Zuo (1984) The seismicity of northernmost Pakistan. Tectonophysics 109:209–226. doi:10.1016/0040-1951(84)90141-0
Zaré M, Memarian H (2003) Macroseismic intensity and attenuation laws: a study on the intensities of Iranian earthquakes: 1975–2000. In: Proceedings of the 4th international conference on seismology and earthquake engineering (SEE4), vol 1. CD-Rom. May 2003, Tehran, Iran, published by IIEES, 8 pp
Zeitler PK, Johnson NM, Naeser CW, Tahirkheli RAK (1982) Fission-track evidence for Quaternary uplift of the Nanga Parbat region, Pakistan. Nature 298:255–257. doi:10.1038/298255a0
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Zaré, M., Karimi-Paridari, S. & MonaLisa An investigation on Balakot, Muzaffarabad (Pakistan) earthquake, 8 Oct. 2005, Mw 7.6; geological aspects and intensity distribution. J Seismol 13, 327–337 (2009). https://doi.org/10.1007/s10950-008-9120-4
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DOI: https://doi.org/10.1007/s10950-008-9120-4