Vertical structure of rip-currents in the nearshore circulation

Sang Young Son, Tae Hwa Jung, Fengyan Shi

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

A number of numerical models have been proposed over the past few decades to investigate rip currents in nearshore circulation zones. Rip currents are the offshore-directed flow generated mainly by wave breaking and momentum transfer over varying topography and they are important in relation to the management of coastal preservation, maintenance, and development. To date, a number of rip current studies have been conducted using depth-integrated two-dimensional (2D) or quasi-three-dimensional (3D) models based on wave-averaged formulations. However, compared with 3D hydrodynamic numerical models, these models are not capable of providing the accurate vertical profiles of current velocity. In this study, we examine the vertical variation of velocities induced by rip-currents using a phase-resolving, 3D Non-Hydrostatic WAVE model (NHWAVE) where an idealized rip channel is used to generate nearshore circulation. The vertical variation of velocities for several locations is investigated and compared with a depth-integrated numerical model for better understanding of depth-dependent hydrodynamics.

Original languageEnglish
Pages (from-to)1402-1406
Number of pages5
JournalJournal of Coastal Research
Volume1
Issue number75
DOIs
Publication statusPublished - 2016 Mar 1
Event14th International Coastal Symposium, ICS 2016 - Sydney, Australia
Duration: 2016 Mar 62016 Mar 11

Keywords

  • Nearshore circulation
  • Non-hydrostatic model
  • Rip-currents

ASJC Scopus subject areas

  • Ecology
  • Water Science and Technology
  • Earth-Surface Processes

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