Investigating offshore groundwater flow provides an excellent opportunity to improve our knowledge on the global hydrogeological cycle. A fundamental way to understand the key factors in offshore groundwater flow is through numerical simulations using a realistic three-dimensional (3D) hydrogeological model of the New Jersey shelf. The work presented here comprises the application of acoustic impedance inversion to several two-dimensional (2D) seismic profile lines acquired along the shelf. The results provide new insights on the subsurface porosity distribution in that area and has served as a guidance for facies delineation in the hydrogeological model which we are currently constructing. The acoustic impedance section also enables us to refine the initial seismic horizon picks which are essential for improving the geometry of the hydrogeological model. The quantitative interpretation of the porosity distribution might as well open a new geologic perspective of the area, which so far has been only interpreted in more conventional and less deterministic ways. Additionally, the work presented here also serves as an assessment to perform more advanced rock physics methods for the groundwater reservoir characterization at the New Jersey shelf within follow-up projects.


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