High-resolution sub-bottom profiling using parametric acoustics

To get sub-bottom information several equipment for sediment echo sounding is used. There are some important advantages of non-linear echo sounders compared to linear ones. This article discusses some advantages of non-linear echo sounders for high-resolution sub-bottom profiling in general as well as INNOMAR'S parametric sub-bottom profiler systems SES-96 and SES-2000. These systems provide not only the exact water depth determination, but give also detailed information about sediment layers and sub-bottom structures with very high resolution.