eprintid: 1349059
rev_number: 34
eprint_status: archive
userid: 608
dir: disk0/01/34/90/59
datestamp: 2012-06-13 18:40:58
lastmod: 2021-09-19 22:25:50
status_changed: 2016-02-01 13:49:00
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Kaoullas, G
creators_name: Johnson, ER
title: Isobath variation and trapping of continental shelf waves
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
divisions: F59
keywords: geophysical and geological flows, shallow water flows, topographic effects
note: Copyright © Cambridge University Press 2012.
abstract: Since Trösch (Proceedings of the 4th International Conference on Applied Numerical Modeling, Tainan, Taiwan, 1984 (ed. H. M. Hsia, Y. L. Chou, S. Y. Wang & S. J. Hsieh) Science and Technology Series, vol. 63, 1986, pp. 307–311. American Astronautical Society) found trapped sub-inertial oscillations in computations of low-frequency variability in the Lake of Lugano, models of trapping have generally considered evenly spaced isobaths parallel to shorelines with approximate boundary conditions at any shelf–ocean boundary. Here an asymptotic analysis for slowly varying topography and accurate spectral computations demonstrate trapping on non-rectilinear shelves. It is shown that changes in any of three factors, isobath curvature, distance from the coast and the shelf-break, and the slope at the shelf-break, are sufficient on their own to give trapping. Continental shelves that abut smoothly onto the open ocean are considered thus avoiding the shelf–ocean boundary condition approximation and allowing the accuracy of previous approximations to be assessed.
date: 2012-06
official_url: http://dx.doi.org/10.1017/jfm.2012.153
vfaculties: VMPS
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_source: WoS-Lite
elements_id: 414214
doi: 10.1017/jfm.2012.153
lyricists_name: Johnson, Edward
lyricists_id: ERJOH80
full_text_status: public
publication: Journal of Fluid Mechanics
volume: 700
pagerange: 283-303
issn: 0022-1120
citation:        Kaoullas, G;    Johnson, ER;      (2012)    Isobath variation and trapping of continental shelf waves.                   Journal of Fluid Mechanics , 700    pp. 283-303.    10.1017/jfm.2012.153 <https://doi.org/10.1017/jfm.2012.153>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1349059/1/Johnson_Trapped_shelf_waves_v4_UCL_RPS.pdf