Tidally induced mean flow over bathymetric features: a contemporary challenge for high-resolution wide-area models
Polton, Jeff A 
ORCID: https://orcid.org/0000-0003-0131-5250.
2015
Tidally induced mean flow over bathymetric features: a contemporary challenge for high-resolution wide-area models [in special issue: The dynamics of shelf seas Special Issue]
Geophysical & Astrophysical Fluid Dynamics, 109 (3).
207-215.
https://doi.org/10.1080/03091929.2014.952726
|
Text
Polton14_gafd.pdf Available under License Creative Commons Attribution. Download (1MB) | Preview |
Abstract/Summary
Huthnance [Estuarine CoastalMar. Sci. 1973, 1, 89–99] is reviewed, whereby an oscillating tide over bathymetric features induces a mean flow generally along isobaths. The effect is a superposition of Coriolis and frictional processes. These are discussed with the intention of elucidating the processes for a more general readership. Induced velocities of order several cm/s are expected around the UK shelf seas. The effect is dynamically significant over bathymetric scales of order a few kilometres and has previously been of most interest to dynamicists studying processes on this scale. However, with the increase in computing power, appropriate scales can be simulated in shelf-wide regional models and in next generation operationalmodels. It is demonstrated that this small-scale effect is likely to be important for shelf-wide regionalmodels and that a spatial resolution of at least 1.8km is recommended for shelf sea simulations.
| Item Type: | Publication - Article |
|---|---|
| Digital Object Identifier (DOI): | https://doi.org/10.1080/03091929.2014.952726 |
| Programmes: | NOC Programmes > Marine Systems Modelling |
| Additional Keywords: | Regional model; Resolution; Tides; Tidal residual; Bathymetry; Tidal excursion |
| NORA Subject Terms: | Earth Sciences Marine Sciences |
| Date made live: | 30 Sep 2014 13:06 +0 (UTC) |
| URI: | https://nora.nerc.ac.uk/id/eprint/508501 |
Actions (login required)
 |
View Item |
Document Downloads
Downloads for past 30 days
Downloads per month over past year
Altmetric
Altmetric
