Spectra of some Oaxaca earthquake aftershocks from RESMAC

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C. J. Rebollar
E. Nyland

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Fue calculado el espectro de las ondas S del evento principal y 21 réplicas del sismo de Oaxaca (Noviembre 29, 1978) registrados digitalmente a 500 Km del área epicentral en las estaciones sísmicas fijas telemétricas de RESMAC. Debido al ancho de banda en frecuencias del sistema RESMAC, el espectro de las ondas S del evento principal no muestra ninguna frecuencia de esquina. Este muestra dos pendientes a frecuencias altas (-2.0 y -2.8) intersectándose a una frecuencia de 1.4 HZ. La comparación de los espectros de las réplicas con aquellos obtenidos con las estaciones portátiles digitales cercanas, muestran un cambio de la frecuencia de esquina a bajas frecuencias típicamente del orden de 0.3 HZ y, en general, un valor pequeño, típicamente 4.3 menor, para el momento sísmico. EI espectro de la onda P no muestra ninguna frecuencia de esquina en los sismogramas de RESMAC.

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Rebollar, C. J., & Nyland, E. (1980). Spectra of some Oaxaca earthquake aftershocks from RESMAC. Geofísica Internacional, 19(2), 109–127. https://doi.org/10.22201/igeof.00167169p.1980.19.2.881
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ANDERSON, D. L., and R. S. HART, 1978. Q of the earth, J. Geophys. Res., 83, 5869-5882. DOI: https://doi.org/10.1029/JB083iB12p05869

BRUNE, J. N., 1970. Tectonic stress and the spectra of seismic shear waves from earthquakes, J. Geophys. Res., 75, 4997-5009. DOI: https://doi.org/10.1029/JB075i026p04997

BRUNE, J. N., 1976. The physics of earthquake strong motion, in Seismic Risk and Engineering Decisions, Ch. 5, 140-177, C. Lomnitz and E. Rosenblueth, editors, Elsevier, Amsterdam. DOI: https://doi.org/10.1016/B978-0-444-41494-6.50008-4

BRUNE, J. N., R. J. ARCHULETA, and S. HARTZELL, 1979. Far-field S-wave spectra, corner frequencies, and pulse shapes, J. Geophys. Res., 84, 2262-2272. DOI: https://doi.org/10.1029/JB084iB05p02262

DAHLEN, F. A., 1974. On the ratio of P-wave to S-wave corner frequencies for shallow earthquakes sources, Bull. Seism. Soc. Am, 64, 1159-1180. DOI: https://doi.org/10.1785/BSSA0640041159

GARZA, T., J. GIL, C. LOMNITZ, A. TUBILLA, 1978. Estado de avance de la red sismológica Mexicana de apertura continental RESMAC. Ingeniería Vol XLVIII, Núm 2 UNAM, Abril-Junio, México.

MADARIAGA, R., 1976. Dynamics of an expanding circular fault, Bull. Seism. Soc. Am., 66, 639-666. DOI: https://doi.org/10.1785/BSSA0660030639

MADARIAGA, R., 1977. Implications of stress-drop models of earthquakes for the inversion of stress drop from seismic observations, Pure Appl. Geophys., 115 (112), 30I-316. DOI: https://doi.org/10.1007/978-3-0348-5745-1_19

MOLNAR, P., B. E. TUCKER, and J. N. BRUNE, 1973. Corner frequencies of P and S waves and models of earthquake sources, Bull. Seism. Soc. Am, 64, 1159-1180.

McGARR, A., S. M. SPOTTISWOODE, N. C. GAY, and W. D. ORTLEPP, 1979. Observations relevant to seismic driving stress, stress drop, and efficiency, J. Geophys. Res., 84, 2251-2261. DOI: https://doi.org/10.1029/JB084iB05p02251

MUNGUIA, L., J. BRUNE, A. REYES, J. GONZALEZ, R. SIMONS, F. VERNON, 1979. Digital Seismic Event Recorder Records and Spectra for Aftershocks of the November 28, 1978, Oaxaca Earthquake, Geofísica Internacional 17 : 3, 359-366. DOI: https://doi.org/10.22201/igeof.00167169p.1978.17.3.1057

NUTTLI, O., 1961. The effect of the Earth's surface on the S wave particle motion, Bull. Seism. Soc. Am, 51, 237-246. DOI: https://doi.org/10.1785/BSSA0510020237

OHTAKE, M., T. MATUMOTO, and G. V. LATHAM, 1977. Seismicity gap near Oaxaca, southern Mexico, as a probable precursor to a large earthquake, Pure Appl. Geophys., 115, 375. DOI: https://doi.org/10.1007/978-3-0348-5745-1_23

PONCE, L., K. C. McNALLY, V. SUMIN DE PORTILLA, J. GONZALEZ, A. DEL CASTILLO, L. GONZALEZ, E. CHAEL, M. FRENCH, 1978. Oaxaca, México, Earthquake of 29 November 1978: A Preliminary Report on Spatio-Temporal Pattern of Preceding Seismic Activity and Mainshock Relocation, Geofísica Internacional, 17 : 2, 109-126. DOI: https://doi.org/10.22201/igeof.00167169p.1978.17.2.928

PRINCE, J., H. RODRIGUEZ, E. Z. JAWASKI, G. KILANDER, 1973. A strong Motion Radio Telemetry Network, Proceedings of the fifth World Conference on Earthquake Engineering, Vol. 1, 1095-1103.

REYES, A., J. GONZALEZ, L. MUNGUIA, A. NAVA, F. VERNON, J. N. BRUNE, 1979. Locations of aftershocks of the Oaxaca earthquake using smoked paper and digital event recorders. Technical report. Sept. DOI: https://doi.org/10.22201/igeof.00167169p.1978.17.3.1055

SAVAGE, J. C., 1972. Relation between P-and S-wave corner frequencies in the seismic spectrum, Bull. Seism. Soc. Am., 64, 1621-1627. DOI: https://doi.org/10.1785/BSSA0640061621

STEWART, G. S., and E. CHAEL, 1978. Source mechanism of the November 29, 1978, Oaxaca, Mexico earthquake - A large simple event, Earthquakes Notes, 49, 47. DOI: https://doi.org/10.22201/igeof.00167169p.1978.17.3.1050

THATCHER, W. and T. C. HANKS, 1973. Source parameters of Southern California earthquakes, J. Geophys. Res., 78, 8547-8576. DOI: https://doi.org/10.1029/JB078i035p08547

TUCKER, E. B., J. N. BRUNE, 1977. Source mechanism and Mb-Ms analysis of aftershocks of the San Fernando earthquake, Geophys. J. Roy. Astr. Soc., 49, 371-426. DOI: https://doi.org/10.1111/j.1365-246X.1977.tb03714.x