US-based TDI-Brooks has accomplished a big survey marketing campaign offshore New York and New Jersey. Between January 2023 and February 2024, the corporate performed an intensive website investigation programme in two offshore wind blocks in state and federal waters.
TDI-Brooks carried out varied duties at completely different levels, corresponding to geophysical surveys, UHRS detailed surveys, archaeological identification surveys, gentle geotechnical coring, and benthic sampling.
The initiatives concerned surveying in extra of 20,000 line-km of analogue and both single or multi-channel seismic lease blocks and cable routes alongside the coasts of New York and New Jersey.
The targets, decided by the collected information, had been to evaluate the situations of the seabed and sub-seabed, which can embody potential dangers (geohazards or man-made hazards) that would affect the set up of wind generators and subsea cables sooner or later.
TDI-Brooks utilised three survey vessels, specifically the R/V BROOKS McCALL, R/V MISS EMMA McCALL, and M/V MARCELLE BORDELON.
The geotechnical survey concerned 150 pneumatic vibracores (pVCs) and over 150 Neptune 5K cone penetration exams (CPTs) gathered from each lease areas and alongside the offshore cable route (OCR).
Together with a number of export cable route surveys, a reconnaissance survey masking the whole thing of the lease space with 150-metre spaced survey strains was performed, adopted by a extra detailed archaeological survey with 30-metre spaced strains.
Survey sensors together with twin head multibeam sonar, facet scan sonar, sub-bottom profiler, UHRS seismic, single-channel seismic, and Transverse Gradiometer (TVG) had been utilised.
The investigations concerned two foremost areas of focus. The primary space included measuring variations in water depth and slope modifications, analyzing the morphology (composition of the seabed and lithology within the formations beneath in relation to native geology), figuring out any pure or man-made obstructions on or beneath the seabed, corresponding to rock outcrops, channels, depressions, gaseous fluid options, particles (pure or artifical), wrecks, industrial constructions, cables, and others.
The second space centered on assessing any shallow geohazards that would have an effect on the websites and future deep geotechnical soil research throughout the prime 100 metres beneath the seabed.
In line with TDI-Brooks, the gathering of knowledge performs an important function in figuring out the optimum location and design for offshore initiatives corresponding to wind farms.
The corporate revealed in February 2023 that it gained a geophysical, geotechnical, and benthic sampling survey contract to check seabed situations throughout the venture lease space and potential export cable routes off the US East Coast.
When it comes to different information coming from TDI-Brooks, the corporate’s new analysis vessel, RV Nautilus, arrived in March on the US East Coast after present process a retrofit marketing campaign. There the vessel will carry out offshore wind work.
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