Accession Number:

ADA454270

Title:

Incident Boundary Conditions for Wave Transformation

Descriptive Note:

Research rept.

Corporate Author:

ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB

Personal Author(s):

Report Date:

2006-01-01

Pagination or Media Count:

13.0

Abstract:

The nearshore wave transformation model STWAVE is used to transform hindcast wave time histories to the shore to estimate longshore sediment transport rates. These transport rates are used to evaluate engineering design of beach fills and coastal shore protection structures. The boundary conditions used to force STWAVE are typically derived from the Wave Information Studies WIS wind-wave hindcast database. In the past, only bulk wave parameters height, period, and direction were available from the database, and these parameters were used to generate parametric spectra to drive the transformation model. Thus, the detailed spectral information from the hindcast was lost in the transition to the nearshore. The updated WIS hindcast is archiving wave spectra, as well as parameters, for intermediate-depth sites along the coast. The purpose of this paper is to evaluate the feasibility of driving a nearshore model with hindcast spectra versus parameters for a two-year period at Duck, North Carolina. Comparisons are made with nearshore gauge measurements. The relative impacts of the incident boundary input on sediment transport estimates for the two-year period are evaluated.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Operations Research
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE