Abstract
Seismic moment, stress drop, source radius, and fault dislocation have been determined for nineteen significant earthquakes in the Konya area, India using displacement spectra of shear waves computed from strong-motion accelerograph records. Though the stress-drop shows a definite increasing trend with the seismic moment, its correlations with source radius and corner frequency indicate that a constant stress drop of 170 bars represents a good mean value to describe the source mechanism of the Koyna dam earthquakes. An empirical relationship also has been established between magnitude and seismic moment.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Aki, K. (1967),Scaling Law of Seismic Spectrum, J. Geophys. Res.72, 1217–1231.
Anderson, J. G., andHough, S. (1984),A Model for the Shape of the Fourier Amplitude Spectrum of Acceleration at High Frequencies, Bull. Seismol. Soc. Am.74, 1969–1994.
Bakun, W. H., andBufe, C. G. (1975),Shear-wave Attenuation along the San Andreas Fault-zone in Central California, Bull. Seismol. Soc. Am.65, 439–459.
Ben-Menahem, A., Smith, S. W., andTony, T. L. (1965),A Procedure for Source Studies from Spectrum of Long-period Seismic Body Waves, Bull. Seismol. Soc. Am.55, 203–205.
Boore, D. M. (1983),Stochastic Simulation of High-frequency Ground Motions Based on Seismological Models of the Radiated Spectra, Bull. Seismol. Soc. Am.73, 1865–1894.
Brune, J. N. (1970),Tectonic Stress and Spectra of Seismic Shear Waves from Earthquakes, J. Geophys. Res.75, 4997–5009.
Castro, R. R., Anderson, J. G., andSingh, S. K. (1990),Site Response, Attenuation and Source Spectra of S-waves along the Guerrero, Mexico, Subduction Zone, Bull. Seismol. Soc. Am.80, 1481–1503.
Chael, E. P. (1987),Spectral Scaling of Earthquakes in the Miramichi Region of New Brunswick, Bull. Seismol. Soc. Am.77, 347–365.
Dube, R. K. (1986),Relocation of the Koyna Earthquakes with a New Velocity Model, Bull. Seismol. Soc. Am.76, 395–407.
Fletcher, J. B. (1982),A Comparison between the Tectonic Stress Measured in situ and Stress Parameters from Induced Seismicity at Monticello Reservoir, South Carolina, Geophys. Res.87, 6931–6944.
Frankel, A., andWennerberg, L. (1989),Microearthquake Spectra from the Anza, California Seismic Network: Site Response and Source Scaling, Bull. Seismol. Soc. Am.79, 581–609.
Glassmoyer, G., andBorcherdt, R. D. (1990),Source Parameters and Effects of Bandwidth and Local Geology on High-frequency Ground Motions Observed for Aftershocks of the Northeastern Ohio Earthquake of 31 January 1986, Bull. Seismol. Soc. Am.80, 889–912.
Guha, S. K., andPatil, D. N. (1990),Large Water-reservoir-related Induced Seismicity, Geriand Beiträge zur Geophysik99, 265–288.
Guha, S. K., Gosav, P. D., Nand, K., Padale, J. G., andMarwadi, S. C. (1974),Koyna Earthquakes (October, 1963 to December 1973), Report, Central Water and Power Research Station, Khadakwasla, Pune, India, 344 pp.
Gupta, I. D., andJoshi, R. G. (1989),Advancement in the Methods of Strong Motion Accelerogram Analysis at CWPRS, Pune, India, Proc. Silver Jubilee Symp. of Indian Soc. Earthq. Tech., University of Roorkee, Roorkee, India, Feb. 25–26, 1989, II, 13–20.
Gupta, I. D., Rambabu, V., andJoshi, R. G. (1991),Attenuation of Peak Acceleration, Velocity and Displacement at Small Distances in Koyna Dam Region, India, 1st International Conf. on Seismology and Earthq. Engrg., Tehran, Iran, May 27–29, 1991, 307–316.
Hanks, T. C. (1979),b-Values and Seismic Source Models: Implication for Tectonic Stress Variations along Active Crustal Fault Zones and the Estimation of High-frequency Strong Ground Motion, J. Geophys. Res.84, 2235–2242.
Hanks, T. C. (1982),f max, Bull. Seismol. Soc. Am.72, 1867–1879.
Hanks, T. C., andBoore, D. M. (1984),Moment-magnitude Relations in Theory and Practice, J. Geophys. Res.89, 6229–6235.
Haskell, N. (1964),Total Energy and Energy Spectral Density of Elastic Wave Radiation from Propagating Faults, Bull. Seismol. Soc. Am.54, 1811–1841.
Hutchenson, K. D., andTalwani, P. (1980),Source Properties of Earthquakes near Monticello Reservoir, Earthquake Notes51, 21.
Kanamori, H., andAnderson, D. L. (1975),Theoretical Basis of Some Empirical Relations in Seismology, Bull. Seismol. Soc. Am.65, 1973–1095.
Keilis-Borok, V. I. (1960),Investigation of the Mechanism of Earthquakes, Sov. Res. Geophys.4 (English translation). 201 pp. American Geophys. U. Consultants Bureau, New York.
Koyna Earthquake, December 11, 1967. Report of the Committee of Experts. Vol. I, New Delhi, April 1968.
Marion, G. E., andLong, L. T. (1980),Microearthquake Spectra in the Southeastern U.S., Bull. Seismol. Soc. Am.70, 1037–1054.
Mori, J., andFrankel, A. (1990),Source Parameters for Small Events Associated with the 1986 North Palm Springs, California, Earthquake, Determined Using Empirical Green Function, Bull. Seismol. Soc. Am.80, 278–295.
Mueller, C. S., andCranswick, E. (1985),Source Parameters from Locally Recorded Aftershocks of the 9 January 1982 Miramichi, New Brunswick, Earthquake, Bull. Seismol. Soc. Am.75, 337–360.
Nuttli, O. W. (1983),Average Seismic Source Parameter Relation for Mid-plate Earthquakes, Bull. Seismol. Soc. Am.73, 519–535.
Padale, J. G., Kulkarni, U. A., Kulkarni, R. C., andPatil, S. S. (1983),Koyna Earthquakes (1984 to 1981), Vol. II Report, Central Water and Power Research Station, Khadakwasla, Pune, India, 409 pp.
Singh, S. K., Ordaz, M., Anderson, J. G., Rodrigkez, M., Quaas, R., Mena, E., Ottaviani, M., andAlmora, D. (1989),Analysis of Near-source Strong-motion Recordings along the Mexican Subduction Zone, Bull. Seismol. Soc. Am.79, 1697–1717.
Thatcher, W., andHanks, T. C. (1973),Source Parameters of Southern California Earthquake, J. Geophys. Res.78, 8547–8576.
Trifunac, M. D. (1972),Stress Estimates for San Fernando, California Earthquake of February 9, 1971: Main Event and Thirteen Aftershocks, Bull. Seismol. Soc. Am.62, 721–750.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gupta, I.D., Rambabu, V. Source parameters of some significant earthquakes near Koyna dam, India. PAGEOPH 140, 403–413 (1993). https://doi.org/10.1007/BF00876962
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00876962