Thin-Layered Basalt – Implications for Seismic Imaging

H038 THIN-LAYERED BASALT: IMPLICATIONS FOR SEISMIC IMAGING Abstract 1 In this paper we use synthetic modelling to study the effect of a succession of basalt flows on the seismic wave and in particular attempt to find a link between the response in the frequency domain and the thickness and velocity distribution of the basalt sequence. Results indicate that in general low-frequency energy is the most efficient at penetrating the basalt but that in some cases higher frequency energy can pass through. The exact nature of the response is dependent on the thickness and velocities of the layers; ray theory is