Tomographic Estimation of Waterbody Parameters in the Presence of Ice Cover Using Seismoacoustic Sources

Resumo

The article presents the results of field tests of marine seismic sources and seismoacoustic areal measuring systems based on autonomous embedded buoys in Lake Ladoga under ice conditions. The authors demonstrate the possibility of separating in the received signal individual modes propagating in the ice cover–water layer–sediment layer–elastic half-space system. An iterative tomographic scheme is proposed that makes it possible to reconstruct high-contrast high-speed anomalies in the considered layered medium. The results of tomographic estimation of the bottom, water layer, and ice layer characteristics in the active mode are presented.