Nederwiek I (NL) Integrated Ground Model: UHRS Pre-stack Inversion for Quantitative Ground Modelling

In 2023, the Netherlands Enterprise Agency (RVO) acquired 5000 km of 2D ultra-high resolution seismic (UHRS) data and more than 200 geotechnical point measurements over the 283 km2 area Nederwiek Wind Farm Zone Zuid (NWWFZ), located approximately 100 km off the west coast of the Netherlands. In this paper methodologies to perform an integrated interpretation of the geotechnical and geophysical data for building a quantitative ground model are described. The ultimate objective is to develop a model of geotechnical parameters from the UHRS data -such as shear modulus (Gmax) and synthetic CPTs - that describe soil conditions site-wide to facilitate and de-risk the design of wind turbine foundations.