From: Terra Nova, Vol. 19, n. 4 (2007) Blackwell Publishing Ltd.


Fig. 8. Side-scan sonar (SSS) image of the lake eastern slope. These images, produced by the acoustic backscatter from the lake bottom, reveal tiny bands of high reflectivity (dark color) running parallel to the isobaths, probably due to small scarps (vertical displacements) in the lake bottom. They are visible in the SSS record, but neither in the bathymetric profiles, nor in the underwater video images. The reason may be the presence of a thin veneer of soft sediment over annular fractures, probably caused by collapse towards the centre of the lake. To download a higher resolution image click here: 2725 kb.


Back to the Terra Nova file

Back to the Tunguska Home Page