Directional characteristics of wind-wave development under high-resolution wind fields

Teruhisa Shimada, Hiroshi Kawamura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We investigate fetch-limited wind-wave development under alternating coastal wind jets and wakes induced by orographic effects. Synthetic Aperture Radar and scatterometer resolve wind jets and wakes with widths of 10-40 km. Using the wind field and a third-generation wave model, we simulate the nearshore wave field. As a result, broader directional wave spectra are seen in wakes while we can find evolution of the directional wave spectrum with offshore distance in both wind jets and wakes. Especially within the offshore distance of 40 km, directional wave spectra have two peaks. These characteristics are well reflected in the overall directional spreading field. The overall directional spreading closely corresponds to the wind speed distribution, and is small/large in wind jet/wake region. The results mean that wave energies that come from neighboring wind jet regions cross in wake regions and combine with wave energy generated by local wind in wake regions.

Original languageEnglish
Title of host publicationProgress in Electromagnetics Research Symposium 2006, PIERS 2006 Tokyo
PublisherElectromagnetics Academy
Pages620-624
Number of pages5
ISBN (Print)9781629939513
Publication statusPublished - 2006 Jan 1
EventProgress in Electromagnetics Research Symposium 2006, PIERS 2006 Tokyo - Tokyo, Japan
Duration: 2006 Aug 22006 Aug 5

Other

OtherProgress in Electromagnetics Research Symposium 2006, PIERS 2006 Tokyo
CountryJapan
CityTokyo
Period06/8/206/8/5

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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  • Cite this

    Shimada, T., & Kawamura, H. (2006). Directional characteristics of wind-wave development under high-resolution wind fields. In Progress in Electromagnetics Research Symposium 2006, PIERS 2006 Tokyo (pp. 620-624). Electromagnetics Academy.