Rapid moment magnitude estimation for large earthquakes in Iran using time integration of absolute ground accelerations
محورهای موضوعی :
Mineralogy
Hossein Sadeghi
1
,
Behnam Rahimi
2
,
Parvin Babaei
3
1 - Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
2 - Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
3 - Earthquake Research Center, Ferdowsi University of Mashhad, Mashhad, Iran
تاریخ دریافت : 1398/03/03
تاریخ پذیرش : 1399/05/17
تاریخ انتشار : 1399/10/12
کلید واژه:
Magnitude,
Seismic attenuation,
Earthquake,
Strong motions,
Early warning,
چکیده مقاله :
A total of 324 strong ground-motion records from 26 earthquakes with moment magnitude greater than 6 were used to derive an adequate equation for moment magnitude estimation. A parameter called total effective shaking was used to introduce an empirical equation for determining the near real-time magnitude of the Iranian plateau. This parameter was obtained through time integration of the absolute acceleration values from accelerograms over the strong shaking duration. It can be calculated by a simple mathematical procedure 5 seconds after completion of the waveform by decreasing the amplitudes to less than 20% of the maximum ground acceleration. The total effective shaking has a dimension of velocity and corresponds to moment magnitude and hypocentral distance in an attenuation relationship. The optimum coefficients were calculated through least-square regression analysis. Also, the effect of site conditions was evaluated in the analysis. The average shear-wave velocity to a depth of 30 m beneath each recording station was taken into account as the local site effect for 147 records out of the total number of records. The estimated moment magnitudes are in reasonably good agreement with the Global CMT values. Their differences are mostly less than 0.25 in the magnitude unit.
منابع و مأخذ:
Alavi M (1994) Tectonics of the Zagros orogenic belt of Iran: New data and interpretations, Tectonophysics 229: 211–238.
Allen RM, Kanamori H (2003) The potential for earthquake early warning in southern California. Science 300:786–789.
Allen RM (2007) The ElarmS earthquake early warning methodology and application across California. In Gasparini P., Manfredi G., Zschau J. (eds) Earthquake Early Warning Systems. Springer, Berlin: 21-43.
Asudeh I (1982) Seismic structure of Iran from surface and body wave data, Geophysical Journal of the Royal Astronomical Society 71: 715–730.
Berberian M (1976) Contribution to the seismotectonic of Iran, part II, Geological Survey of Iran, Report No. 39, (in Persian).
Berberian M (2014) Earthquakes and coseismic surface faulting on the Iranian Plateau. A historical, social, and physical approach, Elsevier, Developments in Earth Surface Processes 17: 714 p.
BHRC (2018a) Building & Housing Research Center (BHRC) of Iran. Iran Strong Motion Network, Waveforms, https://smd.bhrc.ac.ir/Portal/en/Search/Waveforms. Accessed 22 October 2018.
BHRC (2018b) Building and Housing Research Center (BHRC) of Iran. Iran Strong Motion Network, Stations, https://smd.bhrc.ac.ir/Portal/en/Search/Stations. Accessed 22 October 2018.
Boore DM, Atkinson GM (2008) Ground-Motion Prediction Equations for the Average Horizontal Component of PGA, PGV, and 5%-Damped PSA at Spectral Periods between 0.01 s and 10.0 s Earthquake Spectra 24: 99–138.
Borcherdt RD, Gibbs JF (1976) Effects of local geological conditions in the San Francisco Bay region on ground motions and the intensities of the 1906 earthquake. Bulletin of the Seismological Society of America 66: 467–500.
Borcherdt RD, Glassmoyer G (1992) On the characteristics of local geology and their influence on ground motions generated by the Loma Prieta earthquake in the San Francisco Bay region, California. . Bulletin of the Seismological Society of America 82: 603–641.
Colombelli S, Zollo A (2015) Fast determination of earthquake magnitude and fault extent from real-time P-wave recordings, Geophysical Journal International 202: 1158–1163.
Colombelli S, Zollo A, Festa G, Kanamori H (2012) Early magnitude and potential damage zone estimates for the great Mw 9 Tohoku-Oki earthquake, Geophysical Research Letters 39: L22306, doi:10.1029/2012GL053923.
Dehghani G, Makris J (1984) The gravity field and crustal structure of Iran, Neues Jahrbuch für Geologie und Paläontologie Abhandlungen 168: 215-229.
Delouis B, Charlety J, Vallee M (2009) A Method for Rapid Determination of Moment Magnitude Mw for Moderate to Large Earthquakes from the Near-Field Spectra of Strong-Motion Records (MWSYNTH), Bulletin of the Seismological Society 99:1827–1840.
Douglas J (2019) Ground motion prediction equations 1964–2018, http://www.gmpe.org.uk/gmpereport2014.pdf, Accessed 20 May 2020.
Engdahl ER, Bergman EA, Myers SC (2008) Seismotectonics of the Iran Region, American Geophysical Union, Fall Meeting 2008, abstract No. T23D-06.
Engdahl ER, Jackson JA, Myers SC, Bergman EA, Priestley K (2006) Relocation and assessment of seismicity in the Iran region, Geophysical Journal International 167: 761–778.
Eurocode 8 (2004) Design of structuresfor earthquake resistance – Part 1: General rules, seismicactions and rules for buildings, The European Standard EN 1998-1:2004.
Festa G, Zollo A, Lancieri M (2008) Earthquake magnitude estimation from early radiated energy, Geophysical Research Letters 35: L22307, doi:10.1029/2008GL035576.
Ghodrati GA, Mahdavian A, Manouchehri F (2007) Attenuation Relationships for Iran, Journal of Earthquake Engineering 4: 469-492.
Heidari H, Shomali ZH, Ghayamghamian MR (2013) Magnitude-scaling relations using period parameters τc and τpmax, for Tehran region, Iran, Geophysical Journal International 192: 275–284.
Joyner WB, Boore DM (1981) Peak horizontal acceleration and velocity from strong-motion records including records from the 1979 Imperial Valley, California, earthquake, Bulletin of the Seismological Society of America 71: 2011–2038.
Kanamori H (1993) Locating earthquake with amplitude: Application to real-time seismology, Bulletin of the Seismological Society of America 83: 264-268.
Kanamori H, Hauksson E, Heaton T (1997) Real-time seismology and earthquake hazard mitigation, Nature 390: 461–464.
Lee J, Friederich W, Meier T (2012) Real time monitoring of moment magnitude by waveform inversion, Geophysical Research Letters 39: L02309, doi:10.1029/2011GL050210.
Lin TL, Wu YM (2012) A Fast Magnitude Estimation for the 2011 Mw 9.0 Great Tohoku Earthquake, Seismological Research Letters 83: 666-671.
Mase LZ, Likitlersuang S, Tobita T (2018a) Analysis of seismic ground response caused during strong earthquake in Northern Thailand, Soil Dynamic and Earthquake Engineering 114: 113-126.
Mase LZ, Likitlersuang S, Tobita T (2018b) Non-linear Site Response Analysis of Soil Sites in Northern Thailand during the Mw 6.8 Tarlay Earthquake, Engineering Journal 22: 291-303
Midorikawa S, Matsuoka M, Sakugawa K (1994) Site effects on strong-motion records observed during the 1987 Chiba-Ken-Toho-Oki, Japan Earthquake. Proceedings of 9th Japan EarthquakeEngineering Symposium 3: 85–90.
Nasiripour B (2006) Moho depth and crustal Vp/Vs ratio in Khorasan provinces inferred from receiver functions of teleseismic events observed by the Khorasan seismic network, MSc Thesis, Ferdowsi University of Mashhad, Mashhad, Iran.
Nazeri S, Shomali ZH, Colombelli S, Elia L, Zollo A (2017). Magnitude Estimation Based on Integrated Amplitude and Frequency Content of the Initial P Wave in Earthquake Early Warning Applied to Tehran, Iran, Bulletin of the Seismological Society of America 107: 1432-1438.
NEHRP (1997) National Earthquake Hazards Reduction Program (NEHRP). Recommended provisions for seismic regulation for new buildings and other structures edition, Part 1: Provisions, FEMA, Washington, DC.
Nowroozi A (1976) Seismotectonic provinces of Iran, Bulletin of the Seismological Society of America 66: 1249–1276.
Pankow KL, Pechmann JC (2004) The SEA99 ground-motion predictive relations for extensional tectonic regimes: Revisions and a new peak ground velocity relation, Bulletin of the Seismological Society of America 94: 341–348.
R Core Team (2020). R: A language and environment for statistical computing. Vienna, Austria, https://www.R-project.org/, Accessed 20 May 2020.
Sadeghi-Bagherabadi A, Sadeghi H, Fatemi Aghda SM, Sinaeian F, Mirzaei-Alavijeh H, Farzanegan E, Hosseini SK, Babaei P (2013) Real-Time Mapping of PGA Distribution in Tehran Using TRRNet and peeqMap, Seismological Research Letters 84: 1004-1013.
Saffari H, Kuwata Y, Mahdavian A (2017) Site amplification of Iran’s major Seismic zones using attenuation relationship, Journal of Earthquake Engineering doi:10.1080/13632469.2017.1323045.
Shahbazi P, Mansouri B (2019) Loss Modeling for 2017 Sarpol-e Zahab Earthquak, Journal of Seismology and Earthquake Engineering 20: 69-80.
Standard 2800, 2014. Iranian code of practice for seismic resistant design of buildings, 4th edn, BHRC Publication, Tehran, Iran.
Takin M (1972) Iranian geology and continental drift in the Middle East, Nature 235: 147–150.
USGS (2020), Where do earthquakes occur? https://www.usgs.gov/faqs/, Accessed 20 May 2020.
Walker R, Jackson J (2004) Active tectonics and late Cenozoic strain distribution in central and eastern Iran, Tectonics 23: TC5010.
Wessel P, Smith WHF (1998) New improved version of Generic Mapping Tools released. EOS Trans. American Geophysical Union 79: 579-579.
Weisberg S (1980) Applied linear regression, Wiley, New York.
Wu YM, Kanamori H (2008) Exploring the feasibility of on-site earthquake early warning using close-in records of the 2007 Noto Hanto earthquake, Earth Planets and Space 60: 155–160.
Wu YM, Teng TL (2004) Near real-time magnitude determination for large crustal earthquakes, Tectonophysics 390: 205-216.
Zaarour N, Melachrinoudis E (2019) What’s in a Coefficient? The “Not so Simple” Interpretation of R 2, for Relatively Small Sample Sizes, Journal of Education and Training Studies 7: 27-40.
Zare M, Brad PY, Ghafory-Ashtiany M (1999) Site characterizations for the Iranian strong motion network, Soil Dynamics and Earthquake Engineering 18: 101-123.
Zollo A, Amoroso O, Lancieri M, Wu YM, Kanamori H (2010) A threshold-based earthquake early warning using dense accelerometer networks, Geophysical Journal International 183: 963–974.