Mapping the sludge layer of a sand mining pit with subbottom profiler

T&A Survey to conduct a geophysical water bottom survey for the RuwBouw Group to gain insight into the soil structure and thicknesses of the sludge layer for a sand mining project in Hoogersmilde (Drente). On the project location sand extraction had already taken place in the past. The aim of this field study was to determine the thickness of the sludge layer present in the research area.
T&A chose to use a subbottom profiler for this survey, an acoustic survey technique that, mounted on a survey boat, maps the sediment by dragging a probe over the water surface or water bottom. Depending on the desired accuracy, water bottoms can be mapped from a few meters to many tens of meters in depth and obstacles can be detected on or under the water bottom.