Storm Impact on Morphological Evolution of a Sandy Inlet
Abstract
Observations of waves, currents, and bathymetric change in shallow water (8 m). A numerical model (Delft3D, 2DH mode) simulating waves, currents, and morphological change reproduces the observations with the inclusion of hurricane force winds and sediment transport parameters adjusted based on model‐data comparisons. For simulations of short hurricanes and longer nor'easters with identical offshore total time‐integrated wave energy, but different peak wave energies and storm durations, morphological change is correlated (R2 = 0.60) with storm intensity (total energy of the storm divided by the duration of the storm). Similarly, the erosion observed at the Sand Engine in the Netherlands is correlated with storm intensity. The observations and simulations suggest that the temporal distribution of energy in a storm event, as well as the total energy, impacts subsequent nearshore morphological change. Increased storm intensity enhances sediment transport in bathymetrically complex, mixed wave‐and‐tidal‐current energy environments, as well as at other wave‐dominated sandy beaches.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 01, 2018
- Source ID
- 10.1029/2017jc013708
Entities
People
- Britt Raubenheimer
- Julia Hopkins
- Steve Elgar
Organizations
- Delft University of Technology
- National Oceanic and Atmospheric Administration
- National Science Foundation
- United States Department of Defense
- Woods Hole Oceanographic Institution