Presentation Abstract

The Pacific Northwest coasts are subject to the threat of coastal inundation as a result of storm surge. This snapshot presentation provides an overview of a modeling study of storm surge in the Salish Sea using a high resolution coastal hydrodynamic model. A series of historical storm surge events were identified based on non-tidal residual (NTR) water levels observed at Seattle tide gage. Model simulations corresponding to selected storm surge events were conducted. The Salish Sea storm surge model was validated with both observed tidal and NTR data at NOAA tide gauges in the Salish Sea. Sensitivity analysis on the effects of wind forcing and the open boundary conditions are investigated. Model results indicated that storm surge within Salish Sea is dominated by the open boundary conditions at the entrance of the Strait of Juan de Fuca and wind forcing plays a secondary role. Distributions of storm surge heights corresponding to the sub-basins of Salish Sea are analyzed. The result is a map showing coastal areas at higher risk of storm surge versus those that are less exposed. Note: this submission is for oral snapshot presentation.

Session Title

Snapshot Presentations

Keywords

Storm surge, Modeling, Salish Sea

Conference Track

SSE17: Snapshots

Conference Name

Salish Sea Ecosystem Conference (Seattle, WA : 2018)

Document Type

Event

SSEC Identifier

SSE17-319

Start Date

5-4-2018 10:50 AM

End Date

5-4-2018 10:55 AM

Type of Presentation

Oral

Contributing Repository

Digital content made available by University Archives, Heritage Resources, Western Libraries, Western Washington University.

Geographic Coverage

Salish Sea (B.C. and Wash.)

Rights

This resource is displayed for educational purposes only and may be subject to U.S. and international copyright laws. For more information about rights or obtaining copies of this resource, please contact University Archives, Heritage Resources, Western Libraries, Western Washington University, Bellingham, WA 98225-9103, USA (360-650-7534; heritage.resources@wwu.edu) and refer to the collection name and identifier. Any materials cited must be attributed to the Salish Sea Ecosystem Conference Records, University Archives, Heritage Resources, Western Libraries, Western Washington University.

Type

text

Language

English

Format

application/pdf

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Apr 5th, 10:50 AM Apr 5th, 10:55 AM

A modeling study of storm surge in the Salish Sea

The Pacific Northwest coasts are subject to the threat of coastal inundation as a result of storm surge. This snapshot presentation provides an overview of a modeling study of storm surge in the Salish Sea using a high resolution coastal hydrodynamic model. A series of historical storm surge events were identified based on non-tidal residual (NTR) water levels observed at Seattle tide gage. Model simulations corresponding to selected storm surge events were conducted. The Salish Sea storm surge model was validated with both observed tidal and NTR data at NOAA tide gauges in the Salish Sea. Sensitivity analysis on the effects of wind forcing and the open boundary conditions are investigated. Model results indicated that storm surge within Salish Sea is dominated by the open boundary conditions at the entrance of the Strait of Juan de Fuca and wind forcing plays a secondary role. Distributions of storm surge heights corresponding to the sub-basins of Salish Sea are analyzed. The result is a map showing coastal areas at higher risk of storm surge versus those that are less exposed. Note: this submission is for oral snapshot presentation.