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Influence of a cold water bottom dome on internal wave trapping
Author(s) -
Xing Jiuxing,
Davies Alan M.
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2004gl021833
Subject(s) - internal wave , forcing (mathematics) , geology , dome (geology) , stratification (seeds) , inertial wave , wavelength , geophysics , atmospheric sciences , mechanics , wave propagation , physics , longitudinal wave , optics , mechanical wave , oceanography , geomorphology , seed dormancy , botany , germination , dormancy , biology
A numerical model of a cross section through a cold water bottom dome is used to examine the influence of wind forcing frequency, dome length, and density field upon the variability of internal waves in the region. Forcing at super‐inertial frequencies produces internal waves in the frontal regions that propagate into the centre of the dome producing a standing wave. The wavelength of the internal wave depends upon water depth forcing frequency and stratification. At the edges of the dome internal waves are trapped by the bottom fronts. At sub‐inertial forcing waves are trapped close to the dome's boundary giving different mixing to that found with super‐inertial forcing. These calculations suggest significant differences in internal wave spectra in domes compared with open sea observations. These spectral differences would be a critical test of the model's dynamics.