Abstract Issues of predominant period of ground motion and derived underground velocity structure model are investigated in the coastal plains affected by the shallow soft sedimentary layer after the last ice age. It is found that two predominant periods due to the shallow soft layer and deeper drastic sedimentary boundaries are close in a small plain such as the Tottori plain. Japan ... https://www.diegojavierfares.com/special-offer-Salvation-Vinyl-LP-great-price/