The displacement field due to an arbitrary tansential dislocation buried In a layered sphere has been derived by Wason and Sinah (1972). Uslna tho dis· placement field at any arbitrary point, the chanses In the componenls of tho Inertia tensor due to a burled displacement dislocation are thocrotlcaliy calculated for a multilayered spberlcal eartb modol. Tb. Inertia cbAllse. oro lint derived for tho spoclal caso in which tho epicontr. lies on tho eartb’. axla of rotation. Tben, throlllb tho orlho.onal IrAII,formation, the .plcontral …. are carried to the seoarapblcal ….. aDd tho inertia cbaDa.. have been calculated wltb reference to tbe seo&rapblcal.y.lem. Tho results hav. boon derived for throe ….. of.bear dislocations: vertical .trlke-slip, vertical dip-slip aDd dip- ,lip on a 45 degree dipping pi ….