Geophysical Techniques

Geophysical Techniques

The primary aim of INFOMAR as a marine mapping project is to conduct hydrographic and bathymetric surveys to describe the seabed. However, we also conduct geophysical surveys as required and can further define seabed structures and identify sediment type and distribution, both on and below the seabed using a range of instruments. These include sparkers, pingers, magnetometers, chirps and sub-bottom profilers.

Further detail on our Geophysical Instrumentation is available through the INFOMAR Blue Button tabs on this page.

Information on the composition of sediment and geological layers beneath the seabed is vital to guide the optimal siting of marine infrastructure and is of particular relevance to the Offshore Renewable Energy sector. Different structures require different foundational designs to provide secure anchorage to the seabed. A knowledge of sub-bottom data is crucial here for successful emplacement of windfarms, for example.   

Our NEW Sub-Bottom Profile data viewer was created for just that purpose and can be accessed here.

This viewer provides a preview of the SEGY data in the form of composite charts and enable users to quickly interpret the data quality. The composite charts include the survey trackline overlaid on the multibeam bathymetry and backscatter, enabling user to see the seabed geomorphology and the corresponding sub-surface structures.

A quick procedure explaining how to use the new SEG-Y layers is available here.