We use various sampling techniques including vibro-coring, drop core, box coring, grab sampling and diver inspection to obtain physical seabed samples in water depths ranging from the very shallow to several hundred metres.
IXSURVEY has teamed up with SEAS Offshore for a efficient and reliable vibro coring solution. The SEAS vibro coring solution is smaller, lighter and more efficient than any other on the market and this allows us to provide our clients with a very cost effective solution.
The SEAS system has the option of utilising an aluminium core barrel, or a stainless steel core barrel with polycarbonate liner for contaminant sampling and testing. The SEAS VC system can sample between 1 and 6m in depth – subject to the hardness of the seabed. The system can be operated in very shallow water and to depths exceeding 2,000m. The system can be fitted with subsea cameras and highly accurate ultra-short baseline (USBL) acoustic positioning system.
The Box Corer we use can collect a 50cm x 50cm x 50cm sediment sample in a stainless steel box.
We own several different type of grab samplers including the Smith-McIntyre, Van Veen and Shipek Grab systems. These are generally used in water depths less than 100m and can be deployed from small vessels.
When it comes to providing ground truth of protected survey areas or to monitor the growth of seabed flora, we use divers. Divers are the only solution when non-invasive solutions are required to study and measure certain areas of seabed. Detailed diver surveys are often employed after a large area sensor survey (such as a side scan sonar survey) has been completed. The SSS survey may identify particular areas of interest which can then be more closely examined with diver inspection or drop camera.
We have several small, lightweight drop cameras which can be used at various depths and feature a colour video camera.