FN Archimer Export Format
PT J
TI Instability of wind-forced inertial oscillations
BT 
AF TREGUIER, Anne-Marie
   KLEIN, Patrice
AS 1:1;2:1;
FF 1:;2:;
C1 IFREMER,CTR BREST,PHYS OCEANS LAB,BP70,F-29280 PLOUZANE,FRANCE.
C2 IFREMER, FRANCE
SI BREST
IN WOS Ifremer jusqu'en 2018
IF 1.601
TC 6
UR https://archimer.ifremer.fr/doc/00196/30687/30398.pdf
LA English
DT Article
AB An instability mechanism that can amplify wind-forced inertial oscillations in the upper ocean is investigated. This forced instability happens because of the phase relationship between the mixed-layer depth and the surface current. It allows the inertial oscillations propagating against the wind to extract energy from it and amplify. The key ingredients for the instability to work are (a) a non-zero mean wind stress, (b) a spatial variability of the oscillations in the direction of the wind stress. The amplification is demonstrated using a simple shallow-water model in a few situations: the dispersion of a localized disturbance with steady and time-varying wind forcing, generation of inertial waves at a coast, and spatial variability induced by mesoscale eddies. Estimates of the growth rate are provided for both dissipative and nondissipative cases.
PY 1994
PD SEP
SO Journal Of Fluid Mechanics
SN 0022-1120
PU Cambridge Univ Press
VL 275
UT A1994PK57100013
BP 323
EP 349
DI 10.1017/S0022112094002387
ID 30687
ER

EF