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Benchmarking an Unstructured-Grid Model for Tsunami Current Modeling

  • Yinglong J. Zhang
  • George Priest
  • Jonathan Allan
  • Laura Stimely
Chapter
Part of the Pageoph Topical Volumes book series (PTV)

Abstract

We present model results derived from a tsunami current benchmarking workshop held by the NTHMP (National Tsunami Hazard Mitigation Program) in February 2015. Modeling was undertaken using our own 3D unstructured-grid model that has been previously certified by the NTHMP for tsunami inundation. Results for two benchmark tests are described here, including: (1) vortex structure in the wake of a submerged shoal and (2) impact of tsunami waves on Hilo Harbor in the 2011 Tohoku event. The modeled current velocities are compared with available lab and field data. We demonstrate that the model is able to accurately capture the velocity field in the two benchmark tests; in particular, the 3D model gives a much more accurate wake structure than the 2D model for the first test, with the root-mean-square error and mean bias no more than 2 cm s−1 and 8 mm s−1, respectively, for the modeled velocity.

Keywords

Tsunami current unstructured grids SCHISM 

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Copyright information

© Springer International Publishing 2016

Authors and Affiliations

  • Yinglong J. Zhang
    • 1
  • George Priest
    • 2
  • Jonathan Allan
    • 2
  • Laura Stimely
    • 2
  1. 1.Virginia Institute of Marine ScienceCollege of William & MaryGloucester PointUSA
  2. 2.Oregon Department of Geology and Mineral IndustriesNewport Coastal Field OfficeNewportUSA

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