Q of Mode 0S0

Main Article Content

L. Knopoff
P.A. Rydelek
W. Zurn
T. Yogi

Abstract

Estimates of Q of mode oSo as measured after the Chilean (1960) and Alaskan (1964) earthquakes showed large scatter. The Indonesian quake of August 19, 1977, has provided a new opportunity to determine the attenuation factor for oSo. Time lapse spectra of a priori selected high quality data were analyzed using a maximum-likelihood method and Ricean statistics. Data from South Pole and Los Angeles gave Q values of 6324 (1 ±21 %) and 6859 (1 ± 17%) respectively. Taken together the result is 6687 (1 ± 13%).


Google Scholar         ARK: https://n2t.net/ark:/88439/y084078


Permalink: https://geophysicsjournal.com/article/39


 

Article Details

How to Cite
Knopoff, L., Rydelek, P., Zurn, W., & Yogi, T. (1979). Q of Mode 0S0. Journal of Geophysics, 46(1), 89-95. Retrieved from https://journal.geophysicsjournal.com/JofG/article/view/39

References

Buland, R., Berger, J., Gilbert, F. (1979) Observations from the IDA network of attenuation and splitting during a recent earthquake. Nature 277, 358-362

Knopoff, L. (1961) Statistical accuracy of the fault-plane problem, Publications of the Dominion Observatory. 24, 317-319

Middleton, D. (1968) An introduction to statistical communication theory. New Y ark: McGraw-Hill Book Co.

Nakanishi, K.K., Knopoff, L., Slichter, L.B. (1976) Observation of Rayleigh Wave dispersion at very long periods. J. Geophys. Res. 81,4417-4421

Ness, N.F., Harrison, J.C., Slichter, L.B. (1961) Observations of the free oscillations of the earth. J. Geophys. Res. 66, 621-629

Rice, S.O. (1944) Mathematical analysis of random noise, I. Bell System Tech. J. 23, 283-332

Rice, S.O. (1945) Mathematical analysis of random noise, II. Bell Syst. Tech. J. 24, 46-156

Rice, S.O. (1948) Statistical properties of a sine wave plus random noise, Bell Syst. Tech. J. 27, I 09-157

Sailor, R.V., Dziewonski, A.M. (1978) Measurements and interpretation of normal mode attenuation. Geophys. J. Roy. Astron. Soc. 53, 559-581

Slichter, L.B. (1967) Spherical Oscillations of the Earth, Geophys. J. R. Astron. Soc. 14, 171-177

Siichter, L.B., MacDonald, G.J., Caputo, M. Hager, C.L. (1966) Comparison of spectra for spheroidal modes excited by the Chilean and Alaskan quakes. Geophys. J. R. Astron. Soc. 11, 256

Smith, S.W. (1961) An investigation of the earth's free oscillations. California Institute of Technology, Pasadena, California, USA: PhD Thesis