GenCade Application at Onslow Bay, North Carolina

Abstract

This Coastal and Hydraulics Engineering Technical Note (CHETN) describes the setup and results of a regional sediment transport analysis of Onslow Bay, North Carolina, performed using GenCade Version 1. GenCade is a regional shoreline and inlet sand-sharing model capable of evaluating engineering activities (dredging, mining, beach nourishment, structural alternatives) over years to centuries, incorporating cumulative impacts of multiple projects within large coastal systems. The U.S. Army Engineer District, Wilmington, requested that the Coastal Inlets Research Program (CIRP) and the Regional Sediment Management (RSM) Program apply the shoreline change and sand transport model, GenCade, to Onslow Bay to improve understanding of the regional sediment system and provide information for a sediment budget effort. GenCade is a newly developed model that combines the project-scale, engineering design-level calculations of GENESIS (Hanson and Kraus 1989) with the regional-scale, planning level calculations of Cascade (Larson et al. 2003, Connell and Kraus 2006). Inlets, inlet shoals, dredging, beach fills, bypassing, and coastal structures such as seawalls, groins, and breakwaters are represented in the model. GenCade was officially released in April 2012 following a period of extensive testing by numerous beta-users and is run in the Surface-Water Modeling System (SMS) 11.1 with georeferencing capabilities. GenCade was developed by the CIRP and the RSM Program. Additional information on GenCade including model theory, a user s guide, idealized cases, and applications may be found in Frey et al. (2012). The release version of GenCade was applied to the Onslow Bay region to help determine longshore sand transport direction and magnitude.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2012
Accession Number
ADA576416

Entities

People

  • Ashley E. Frey
  • Greg L. Williams
  • Kevin B. Conner
  • Michael J. Wutkowski
  • Sophie Munger

Organizations

  • Engineer Research and Development Center

Tags

DTIC Thesaurus Topics

  • Aerial Photographs
  • Army
  • Army Corps Of Engineers
  • Barrier Islands
  • Boltzmann Equation
  • Coastal Engineering
  • Coastal Management
  • Dredging
  • Engineering
  • Engineers
  • Environmental Assessment
  • Grain Size
  • Model Theory
  • Navigation
  • North Carolina
  • Sedimentation
  • Statistics

Fields of Study

  • Environmental science

Readers

  • Coastal and Marine Engineering/Sediment Transport/Hydraulic Engineering
  • Computational Modeling and Simulation