Abstract
The moment tensor representation of seismic sources is applied to some close-in (2–13 km) accelerometer data of contained nuclear explosions. The two explosions studied are Handley and Pipkin, both detonated on Pahute Mesa at the Nevada Test Site. A variety of Gree’s functions are used in the inversions for the moment tensor to test the sensitivity of the procedure to assumed propagation path effects. The simplest model consisted of a half-space structure with the most complicated a three-layer over a half-space. The resulting source functions are dominated by the isotropic component of the moment tensor with the deviatoric component as much as a factor of twenty-five smaller. The time function of the source appears to have a double peaked nature. The fit of the calculated seismograms to the observed is not greatly affected by the assumed Green’s function.
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References
Backus, G.E., 1977a. Interpreting the seismic glut moment of total degree two or less, Geophys. J. Roy. Ast. Soc. 51, 1–25.
Backus, G.E., 19776. Seismic sources with observable glut moment of spatial degree two, Geophys. J. Roy. Astr. Soc. 51, 27–45.
Backus, G.E. and M. Mulcahy, 1976a. Moment tensors and other phenomenological descriptions of seismic sources - I. Continuous displacement, Geophys. J. Roy. Astr. Soc. 46, 341–361.
Backus, G.E. and M. Mulcahy, 1976b. Moment tensors and othe,-phenomenological descriptions of seismic sources — II. Discontinuous displacements, Geophys. J. Roy. Astr. Soc. 47, 301–329.
Gilbert, F., 1970. Excitation of normal modes of the earth by earthquake sources, Geophys. J. Roy. Astr. Soc. 22, 223–226.
Gilbert, F., and A.M. Dziemonski, 1975. An application of normal mode theory to the retrieval of structural parameters and source mechanisms from seismic spectra, Phil. Trans. Roy. Soc. London, Ser. A, 278, 187–269.
Hadley, D.M. and D.V. Helmberger, 1979. Seismic source functions and attenuation from local and teleseismic observations of the NTS events Jorum and Handley, Abstract Fall AGU, EOS, 60, 881.
Hamilton, R.M. and J.H. Healy, 1969. Aftershocks of the Benham nuclear explosion, Bull. Seism. Soc. Am. 59, 2271–2281.
Helmberger, D.V., 1968. The crust-mantle transition in the Bearing Sea, Bull. Seism. Soc. Am. 58, 179–214.
Johnson, L.R., 1974. Green’s function for Lamb’s problem, Geophys. J. Roy. Astr. Soc. 37, 99–131.
Pao, Y-H. and R.R. Gajewski, 1977. The generalized ray theory and transient responses of layered elastic solids, Phvs. Acous. 13, 183–265, Academic Press.
Strelitz, R.A., 1977. Moment tensor inversions and source models, Geophys. J. Roy. Astr. Soc. 52, 359–364.
Stump, B.W. and L.R. Johnson, 1977. The determination of source properties by the linear inversion of seismograms, Bull. Seism. Soc. Am. 67, 1489–1502.
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© 1981 D. Reidel Publishing Company
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Stump, B.W., Johnson, L.R. (1981). The Effect of Green’s Functions on the Determination of Source Mechanisms by the Linear Inversion of Seismograms. In: Husebye, E.S., Mykkeltveit, S. (eds) Identification of Seismic Sources — Earthquake or Underground Explosion. NATO Advanced Study Institutes Series, vol 74. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-8531-5_9
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DOI: https://doi.org/10.1007/978-94-009-8531-5_9
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