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Friday, July 17, 2020 | History

2 edition of Scattering of coastal-trapped waves by irregularities in coastline and topography found in the catalog.

Scattering of coastal-trapped waves by irregularities in coastline and topography

John L. Wilkin

Scattering of coastal-trapped waves by irregularities in coastline and topography

by John L. Wilkin

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  • 23 Currently reading

Published by Woods Hole Oceanographic Institution in Woods Hole, Mass .
Written in English

    Subjects:
  • Ocean waves -- Mathematical models.

  • Edition Notes

    Statementby John L. Wilkin.
    SeriesWHOI -- 88-47., WHOI (Series) -- 88-47.
    ContributionsMassachusetts Institute of Technology.
    The Physical Object
    Pagination120 p. :
    Number of Pages120
    ID Numbers
    Open LibraryOL16119229M

    [30] Nakamura et al. claimed that strong tide‐topography interaction generates internal waves with the intrinsic frequency ω = −kU (t 0) ± σ tide at each instant of time t = t 0, where k is the horizontal wave number of the bottom topography, U (t) = U 0 cos(σ tide t) is the tidal velocity with σ tide the tidal frequency. They called. At all cross‐shore sections along the southwestern African and South American continents, every 1/12°, CTW modal structures of the first four free CTW modes are derived using ROMS mean (–) stratification and topography by applying the Brink and Chapman Coastal‐Trapped Wave programs.

    Scattering Of Baroclinic Long Waves By Complex Coastal Topography: Model studies suggest that scattering of CTWs by irregularities in the topography such as abrupt we rotate the topography so that the coast lines up in a roughly North-South Direction (Figure 1). 3. The scattering of Rossby waves from finite abrupt topography. Geophysical and Astrophysical Fluid Dynamics , 99(3), Willmott AJ. Waves in the Ocean and the Atmosphere by J. Pedlosky [Book review]. Geophysical and Astrophysical Fluid Dynamics , 99(4), Biggs NRT, Austin LMC, Willmott AJ.

    Phenomena of long-wave refraction and capture by underwater ridges and the shelf are described. Estimation is performed of linear (viscous) and nonlinear (turbulent) dissipation of the energy of long waves. The effect of a wave amplitude being reduced by scattering on bottom irregularities . Upwelling in the ocean is concentrated in regions along the coast where winds are favourable, along the edges of the continental shelf, in equatorial regions, near the edge ofice D.C. () Scattering of coastal-trapped waves by irregularities in coastline and topography.


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Scattering of coastal-trapped waves by irregularities in coastline and topography by John L. Wilkin Download PDF EPUB FB2

The scattering of freely-propapting coastal-trapped waves (CTWs) by large variations in coastline and topography is studied using a numerical model which accomodates arbitrary density stratification, bathymetry and by: Scattering of Coastal-Trapped Waves by Irregularities in Coastline and Topography John L.

Wilkin; John L. Wilkin Joint Program in Oceanographic Engineering, MIT/WHOI. Woods Hole, Massachusetts. Scattering of Coastal-Trapped Waves by Irregularities in Castline and Topography Article (PDF Available) in Journal of Physical Oceanography 20(3) March with Reads. Title: Scattering of Coastal-Trapped Waves by Irregularities in Coastline and Topography Created Date: 5/2/ AM.

adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86ACited by:   Scattering of long coastal-trapped waves due to bottom irregularities.

Dyn. Atmos. Oceans, The topographic scattering of long coastal-trapped waves is considered to see whether or not stratification tends to weaken scattering. Numerical examples show that this is.

These coastal trapped waves can be represented by a sum of modes whose structures and phase velocities depend on cross-shore topography and stratification.

The amplitude of such modes depends on the wind forcing, the dissipation by friction and the scattering of energy to other modes or other kinds of motion. Yang Ding, Xianwen Bao, Maochong Shi, Characteristics of coastal trapped waves along the northern coast of the South China Sea during yearOcean Dynamics, /s, 62, 9, (), ().

The behavior of coastal-trapped waves near the inertial frequency is poorly understood, yet important in view of the energy concentrations at such frequencies.

In linear theory, low frequency (subinertial) energy at ocean margins is channeled along topography and/or the coastline as coastal-trapped waves. A model for the scattering of a continental shelf wave by a small, isolated and smooth topographic irregularity is developed.

It is found that a wave of ., incident on a bump of. Scattering of Coastal-Trapped Waves by Irregularities in Coastline and Topography. John L. Wilkin; David C. Chapman. Abstract.

View Article. PDF. Linear Equatorial Wave Mode Initialization in a Model of the Tropical Pacific Ocean: An Initialization Scheme for Tropical Ocean Models. As published Keyword Coastal-trapped waves; Bottom friction ; Bottom friction.

The structures and evolution of the coastal-trapped waves (CTW) along the northern coast of the South China Sea (SCS) in the year are studied using observed hourly sea level records collected from four sites around the northern SCS and a three-dimensional numerical model with realistic bathymetry and wind forcing.

Analysis of the yearlong records of the observed sea level data indicates. Coastal-trapped Wave Scattering into and out of Straits and Bays the coastal-trapped waves (CTW) along the northern coast of the South China Sea (SCS) in the year are studied using.

The scattering of a BSW by variable topography on a shelf of Scattering of Coastal-Trapped Waves by Irregularities in Castline and Topography To detect possible incoming propagating.

Moreover, the numerical model yielded more realistic freely propagating CTWs because it included the effects of the along-shore variations in both the bottom topography and the coastline as well as the bottom friction and viscosity. Interpretation of the observed coastal-trapped waves.

CTWs can be generated by wind forcing over irregular bottom topography along the coast and have been the subject of investigation for a long time (e.g. Clarke, ).In the GoM, CTWs are forced by. Scattering of coastal trapped waves by irregularities in coastline and topography, Laboratoire d'Etudes en Geophysique et Oceanographie Spatiales, CNES/ GRGS/ LEGOS/ UMR, 18 Avenue Edouard Belin, Toulouse Cedex 4, To submit an update or takedown request for.

The spatial structures and propagation characteristics of coastal trapped waves (CTWs) along the southern and eastern coasts of Australia are investigated using observed daily mean sea level data and results from a high-resolution ocean general circulation model (OGCM), and by conducting sensitivity studies with idealized numerical models.

The results obtained from the sea level. Consistent with the Gill and Clarke model for a rectilinear coastline, the topography for the experiment was constructed with the cross-sectional shelf depth of D.C.

ChapmanScattering of coastal-trapped waves by irregularities in coastline and topography. Coastal Trapped Waves. J.M. Huthnance, in Encyclopedia of Ocean Sciences was shown to be due to topography rather than coastline shape because a uniform depth model with the same coastline slope gave upwelling rates that were and the excitation of edge waves caused by coastline irregularities and the subsequent scattering and resonance.

The results are of interest for coastal propagation of the tides; numerical examples are given for the California coastline. It is found that the Earth's curvature reduces the wave speed south of Cape Mendocmo by 8–10% (the possible range for other coastlines is roughly ± 15%) and that the continental shelf reduces the wave speed by 2−8%.In this paper, the main results of field research into the seawater dynamics on the shelf of the Crimea in the summer of are reported.

It is shown that in the ‘weather’ frequency band, the oscillations with periods of 11–12 days have the greatest amplitude.

These represent coastal-trapped waves with a spatial scale of the order of the length of the Black Sea coastline.