The 14 April 2012 Koyna Earthquake of Mw 4.8: insights into active tectonics of the Koyna region
Tóm tắt
The 14 April 2012 earthquake of Mw 4.8 is the best monitored event in the Koyna region, a globally significant site of reservoir triggered seismicity in western India. Hence, investigation of this event assumes great importance, also considering its epicentral location close to that of the 1967 Koyna earthquake of M 6.3, the world’s largest reservoir triggered earthquake. Inversion of P-wave amplitude data along with the first motion polarities at 30 digital seismic stations provides a well-constrained strike-slip type focal mechanism solution, similar to that of the 1967 earthquake. The mechanism is further confirmed by moment tensor inversion of 3-component waveform data recorded at the three nearest broadband stations. The depth distribution of the aftershocks clearly delineates a NNE-SSW trending fault plane dipping about 78° to the WNW and coinciding with the trend of the Donachiwada fault, as well as the left-lateral fault plane of the focal mechanism solution obtained. The precise location, focal mechanism and the seismicity distribution from our dense network indicate that the activity in the Koyna region is mainly controlled by the NNE-SSW trending Donachiwada (D) fault zone rather than the Koyna River Fault Zone (KRFZ) on the west as suggested previously.
Tài liệu tham khảo
citation_title=Quantitative seismology: Theory and methods; citation_publication_date=1980; citation_id=CR1; citation_author=K Aki; citation_author=PG Richards; citation_publisher=W.H. Freeman and Co.
citation_journal_title=Bull Seismol Soc Am; citation_title=Focal Mechanism of Indian Earthquakes; citation_author=AR Banghar; citation_volume=62; citation_publication_date=1972; citation_pages=603-608; citation_id=CR2
citation_journal_title=Bull Seismol Soc Am; citation_title=A simple method to calculate Green’s functions for elastic layered media; citation_author=M Bouchon; citation_volume=71; citation_publication_date=1981; citation_pages=959-971; citation_id=CR3
citation_journal_title=Pure Appl Geophys; citation_title=Delineation of active faults, Nucleation process and Pore pressure measurements at Koyna (India); citation_author=RK Chadha, HK Gupta, HJ Kuempel, P Mandal, AN Rao, N Kumar, I Radhakrishna, BK Rastogi, IP Raju, CSP Sarma, C Satyamurthy, HVS Satyanarayana; citation_volume=150; citation_publication_date=1997; citation_pages=551-562; citation_doi=10.1007/s000240050092; citation_id=CR4
citation_journal_title=Eng Geol; citation_title=On categorizing induced and natural tectonic earthquakes near new reservoirs; citation_author=R Chander, null Kalpna; citation_volume=46; citation_publication_date=1997; citation_pages=81-92; citation_doi=10.1016/S0013-7952(96)00099-3; citation_id=CR5
citation_journal_title=Geophys J Int; citation_title=Focal mechanism of the Koyna, India earthquake of 1967, December 10; citation_author=U Chandra; citation_volume=46; citation_publication_date=1976; citation_pages=247-251; citation_doi=10.1111/j.1365-246X.1976.tb04156.x; citation_id=CR6
citation_journal_title=Pure Appl Geophys; citation_title=Hydromechanics of the Koyna-Warna region, India; citation_author=I Durá-Gómez, P Talwani; citation_publication_date=2009; citation_id=CR7
citation_journal_title=Geophys J; citation_title=The effect of crustal scattering on observed high-frequency earthquake seismograms; citation_author=JE Ebel; citation_volume=95; citation_publication_date=1989; citation_pages=329-341; citation_doi=10.1111/j.1365-246X.1989.tb03356.x; citation_id=CR8
citation_journal_title=Geophys J Int; citation_title=Moment tensor inveriosn of small earthquakes in southwestern germany for fault plane solution; citation_author=JE Ebel, KP Bonjer; citation_volume=101; citation_publication_date=1990; citation_pages=133-146; citation_doi=10.1111/j.1365-246X.1990.tb00763.x; citation_id=CR9
citation_title=Reservoir-Induced Earthquakes; citation_publication_date=1992; citation_id=CR10; citation_author=HK Gupta; citation_publisher=Elsevier
citation_journal_title=Earth-Sci Rev; citation_title=A review of recent studies of triggered earthquakes by artificial water reservoirs with special emphasis on earthquakes in Koyna, India; citation_author=HK Gupta; citation_volume=58; citation_publication_date=2002; citation_pages=279-310; citation_doi=10.1016/S0012-8252(02)00063-6; citation_id=CR11
citation_title=Dams and Earthquakes; citation_publication_date=1976; citation_id=CR12; citation_author=HK Gupta; citation_author=BK Rastogi; citation_publisher=Elsevier
citation_journal_title=Bull Seismol Soc Am; citation_title=A Study of the Koyna Earthquake of December 10, 1967; citation_author=HK Gupta, H Narain, BK Rastogi, I Mohan; citation_volume=59; citation_publication_date=1969; citation_pages=1149-1162; citation_id=CR13
citation_journal_title=Geophys Res Let; citation_title=Anatomy of surface rupture zones of two stable continental region earthquakes, 1967 Koyna 1993 Latur, India; citation_author=HK Gupta, RUM Rao, R Srinivasan, GV Rao, GK Reddy; citation_volume=26; citation_publication_date=1999; citation_pages=1985-1988; citation_doi=10.1029/1999GL900399; citation_id=CR14
citation_journal_title=Curr Sci; citation_title=Earthquake forecast appears feasible at Koyna, India; citation_author=HK Gupta, D Shashidhar, M Pereira, P Mandal, NP Rao, M Kousalya, HVS Satyanarayana, VP Dimri; citation_volume=93; citation_publication_date=2007; citation_pages=843-848; citation_id=CR15
citation_journal_title=J Geol Soc Ind; citation_title=Short term earthquake forecasts at Koyna, India; citation_author=HK Gupta, D Shashidhar, K Mallika, NP Rao, D Srinagesh, HVS Satyanarayana, S Saha, RTB Naik; citation_volume=77; citation_publication_date=2011; citation_pages=5-11; citation_doi=10.1007/s12594-011-0001-z; citation_id=CR16
citation_journal_title=Geol Sac Am Abstr Prog; citation_title=Active faulting in the Deccan Plateau near Koyna Nagar, India; citation_author=RE Harpster, LC Cluff, JR Lovegreen; citation_volume=11; citation_publication_date=1979; citation_pages=438-439; citation_id=CR17
citation_title=Technical report on deep seismic sounding studies along Koyna-I and Koyna-II profiles, Deccan Trap covered area, Masharashtra State; citation_publication_date=1979; citation_id=CR18; citation_author=KL Kaila; citation_author=PR Reddy; citation_author=PRK Murthy; citation_author=KM Tripathi; citation_publisher=India
citation_journal_title=Bull Seismol Soc Am; citation_title=Reflections, rays and reverberations; citation_author=BLN Kennett; citation_volume=64; citation_publication_date=1974; citation_pages=1685-1969; citation_id=CR19
citation_journal_title=Geophys J R Astron Soc; citation_title=Seismic waves in a stratified half space-II, Theoretical seismograms; citation_author=BLN Kennett; citation_volume=61; citation_publication_date=1980; citation_pages=1-10; citation_doi=10.1111/j.1365-246X.1980.tb04299.x; citation_id=CR20
Khattri KN (1970) The Koyna Earthquake-Seismic Studies. Proc. Symposium on Earthquake Engg School of Research and Training in Earthquake Engg University of Roorkee Roorkee India
citation_journal_title=Bull Seismol Soc Am; citation_title=Inversion of complex body waves – II; citation_author=M Kikuchi, H Kanamori; citation_volume=81; citation_publication_date=1991; citation_pages=2335-2350; citation_id=CR22
citation_journal_title=J Geophys Res; citation_title=A body wave inversion of the Koyna, India earthquake of December 10, 1967, and some implications for body wave focal mechanisms; citation_author=CA Langston; citation_volume=81; citation_publication_date=1976; citation_pages=2517-2529; citation_doi=10.1029/JB081i014p02517; citation_id=CR23
citation_journal_title=J Geophys Res; citation_title=Depth of faulting during the 1968 Meckering, Australia earthquake sequence determined from waveform analysis of local seismograms; citation_author=CA Langston; citation_volume=92; citation_publication_date=1987; citation_pages=11561-11574; citation_doi=10.1029/JB092iB11p11561; citation_id=CR24
citation_journal_title=Nature; citation_title=Fault-plane solution of the Koyna (India) earthquake; citation_author=WH Lee, CB Raleigh; citation_volume=233; citation_publication_date=1969; citation_pages=172-173; citation_doi=10.1038/223172a0; citation_id=CR25
citation_journal_title=Bull Seismol Soc Am; citation_title=Hypocenter: An earthquake location method using centered, scaled, and adaptively least squares; citation_author=BRE Lienert, E Berg, LN Frazer; citation_volume=76; citation_publication_date=1986; citation_pages=771-783; citation_id=CR26
citation_journal_title=Seismol Res Lett; citation_title=A computer program for locating earthquakes both locally and globally; citation_author=BRE Lienert, J Havskov; citation_volume=66; citation_publication_date=1995; citation_pages=26-36; citation_doi=10.1785/gssrl.66.5.26; citation_id=CR27
citation_journal_title=Pure Appl Geophys; citation_title=Focal Mechanism Study of an Aftershock in the Koyna Region of Maharashtra State, India; citation_author=BSR Rao, TKSP Rao, VS Rao; citation_volume=113; citation_publication_date=1975; citation_pages=483-488; citation_doi=10.1007/BF01592933; citation_id=CR28
citation_journal_title=Curr Sci; citation_title=Single station moment tensor inversion for focal mechanisms of Indian intra-plate earthquakes; citation_author=NP Rao; citation_volume=77; citation_publication_date=1999; citation_pages=1184-1189; citation_id=CR29
citation_journal_title=Geophys J Int; citation_title=Deep lower crustal earthquakes in central India: inferences from analysis of regional broadband data of the 1997 May 21, Jabalpur earthquake; citation_author=NP Rao, T Tsukuda, M Kosuga, SC Bhatia, G Suresh; citation_volume=148; citation_publication_date=2002; citation_pages=132-138; citation_doi=10.1046/j.0956-540x.2001.01584.x; citation_id=CR30
citation_journal_title=Bull Seismol Soc Am; citation_title=Seismicity at Warna reservoir (near Koyna) through 1995; citation_author=BK Rastogi, RK Chadha, CSP Sarma, P Mandal, HVS Satyanarayana, IP Raju, N Kumar, C Satyamurthy, AN Rao; citation_volume=87; citation_publication_date=1997; citation_pages=1484-1494; citation_id=CR31
citation_journal_title=Geophys J Int; citation_title=Waveform inversion of broadband data of local earthquakes in Koyna-Warna region, western India; citation_author=D Shashidhar, NP Rao, HK Gupta; citation_volume=185; citation_publication_date=2011; citation_pages=292-304; citation_doi=10.1111/j.1365-246X.2011.04935.x; citation_id=CR32
citation_journal_title=Bull Seismol Soc Am; citation_title=Surface-wavera diation pattern and source parameters of Koyna earthquake of December 10, 1967; citation_author=DD Singh, BK Rastogi, HK Gupta; citation_volume=65; citation_publication_date=1975; citation_pages=711-773; citation_id=CR33
citation_journal_title=J Geophys Res; citation_title=Seismicity of the Indian Ocean and a Possible Nascent Island are Between Ceylon and Australi; citation_author=LR Sykes; citation_volume=75; citation_publication_date=1970; citation_pages=5041-5055; citation_doi=10.1029/JB075i026p05041; citation_id=CR34
citation_journal_title=Bull Seismol Soc Am; citation_title=An inversion method to analyse the rupture process of earthquakes using near-field seismograms; citation_author=M Takeo; citation_volume=77; citation_publication_date=1987; citation_pages=490-513; citation_id=CR35
Tandon AN, Chaudhury HM (1968) Koyna earthquake of December, 1967. India Meteoro- logical Department Sei Rep 59 New Delhi
citation_journal_title=Pure Appl Geophys; citation_title=Seismotectonics of the Koyna-Warna area, India; citation_author=P Talwani; citation_volume=150; citation_publication_date=1997; citation_pages=511-550; citation_doi=10.1007/s000240050091; citation_id=CR37
citation_journal_title=Abstract Only Trans Am Geophys Union; citation_title=The Koyna, India, Earthquake of December 10, 1967; citation_author=Y-Ben Tsai, K Aki; citation_volume=52; citation_publication_date=1971; citation_pages=277; citation_id=CR38