Centroid-moment tensor solutions for October–December, 1998

Abstract

Centroid-moment tensor solutions are presented for 242 earthquakes that occurred during the fourth quarter of 1998. 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, Vol. 19. Plenum, pp. 785–797]. A model of anelastic attenuation by 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.