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Pregled bibliografske jedinice broj: 545491

Analysis of Imposing Tidal Dynamics to Nested Numerical Models


Janeković, Ivica; Powell, Brian
Analysis of Imposing Tidal Dynamics to Nested Numerical Models // Continental shelf research, 34 (2012), 30-40 doi:10.1016/j.csr.2011.11.017 (međunarodna recenzija, članak, znanstveni)


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Naslov
Analysis of Imposing Tidal Dynamics to Nested Numerical Models

Autori
Janeković, Ivica ; Powell, Brian

Izvornik
Continental shelf research (0278-4343) 34 (2012); 30-40

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Internal tides ; Nested Models ; Boundary Conditions ; ROMS model ; Hawaii

Sažetak
Tides often play an important role in the circulation of coastal and shelf environments. In numerical modeling, high- resolution models are used for these regions requiring that they be nested in coarser models with properly specified tidal boundary conditions. In this paper, we examine two, one-way nesting methods for specifying the combined baroclinic and barotropic tides to a child model: i) specifying spatially interpolated boundary values from the outer model at a specified interval ; and, ii) using the same boundary conditions as (i), but fitting and removing the tidal harmonics from the boundaries and providing the harmonics as separate forcing. We compare these methods in two regions: an idealized seamount experiment where baroclinic tides are generated outside of and propagate into the nested domain ; and, a realistic case of the Hawaiian archipelago with strong barotropic tides with significant energy conversion to the baroclinic tide both inside and outside of the nested domain. In all cases, we find that there is significant improvement in the tidal dynamics by removing the tides from the boundary conditions and using a separate tidal forcing as compared to simply prescribing the boundary conditions. Furthermore, because many numerical models use temporal linear interpolation for boundary conditions at each time-step, if the tidal function is not specified separately, the amplitudes are significantly reduced and --- more importantly --- energy is aliased at higher frequencies. These findings are applicable to any tidally energetic region (particularly shelf and coastal systems) and become more significant with nonlinear interaction between tidal constituents.

Izvorni jezik
Engleski

Znanstvena područja
Geologija



POVEZANOST RADA


Projekti:
098-0982705-2707 - Matematičko modeliranje cirkulacije i satelitska detekcija graničnih procesa (Kuzmić, Milivoj, MZOS ) ( POIROT)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Ivica Janeković (autor)

Poveznice na cjeloviti tekst rada:

doi dx.doi.org www.sciencedirect.com

Citiraj ovu publikaciju:

Janeković, Ivica; Powell, Brian
Analysis of Imposing Tidal Dynamics to Nested Numerical Models // Continental shelf research, 34 (2012), 30-40 doi:10.1016/j.csr.2011.11.017 (međunarodna recenzija, članak, znanstveni)
Janeković, I. & Powell, B. (2012) Analysis of Imposing Tidal Dynamics to Nested Numerical Models. Continental shelf research, 34, 30-40 doi:10.1016/j.csr.2011.11.017.
@article{article, author = {Janekovi\'{c}, Ivica and Powell, Brian}, year = {2012}, pages = {30-40}, DOI = {10.1016/j.csr.2011.11.017}, keywords = {Internal tides, Nested Models, Boundary Conditions, ROMS model, Hawaii}, journal = {Continental shelf research}, doi = {10.1016/j.csr.2011.11.017}, volume = {34}, issn = {0278-4343}, title = {Analysis of Imposing Tidal Dynamics to Nested Numerical Models}, keyword = {Internal tides, Nested Models, Boundary Conditions, ROMS model, Hawaii} }
@article{article, author = {Janekovi\'{c}, Ivica and Powell, Brian}, year = {2012}, pages = {30-40}, DOI = {10.1016/j.csr.2011.11.017}, keywords = {Internal tides, Nested Models, Boundary Conditions, ROMS model, Hawaii}, journal = {Continental shelf research}, doi = {10.1016/j.csr.2011.11.017}, volume = {34}, issn = {0278-4343}, title = {Analysis of Imposing Tidal Dynamics to Nested Numerical Models}, keyword = {Internal tides, Nested Models, Boundary Conditions, ROMS model, Hawaii} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Citati:





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