Multidisciplinary Hydrographic Survey for Marine Terminal Planning
Substructure conducted a multibeam and sub-bottom profile survey in the areas around a deep-water marine facility and into the main channel in the Delaware River to provide data for a project to expand the pier structure and deepen the channel. Substructure’s custom built survey vessel Orion, trailered to Delaware, was used to acquire all of the multibeam data, including full multibeam backscatter and snippet data. Final data deliverables included a half-meter gridded bathymetric data, a 25-centimeter backscatter mosaic, and an estimate of sediment thickness. In addition, a detailed data report and figures were prepared to outline the survey methods and to present a variety of pier expansion and dredging options, including the required dredging volumes.
A depiction of one of several pier expansion and dredging scenarios that were developed for a commercial marine terminal on the Delaware River based on multibeam bathymetry and backscatter imagery, as well as numerous other existing conditions (e.g., gas pipeline and state regulatory limits) that impact construction in this area. These data clearly show the impacts associated with past pipeline excavation, dredging, and burial work that were conducted near the terminal.
