Centroid-moment tensor solutions for July–September 1999

Abstract

Centroid-moment tensor (CMT) solutions are presented for 231 earthquakes that occurred during the third quarter of 1999. The solutions are obtained using corrections for aspherical earth structure represented by a whole mantle shear velocity model SH8/U4L8 of Dziewonski and Woodward (Dziewonski, A.M., Woodward, R.L., 1992. Acoustic imaging at the planetary scale, In: Emert, H., Harjes, H.-P. (Eds.), Acoustical Imaging, Plenum, New York, Vol. 19, pp. 785–797.). A model of anelastic attenuation of Durek and Ekström (Durek, J.J., Ekström, G., 1996. A radial model of anelasticity consistent with long-period surface wave attenuation. Bull. Seismol. Soc. Am. 86 144–158.) is used to predict the decay of the waveforms.