FN Archimer Export Format
PT J
TI Sub-Mesoscale Frontal Instabilities in the Omani Coastal Current
BT 
AF MORVAN, Mathieu
   Carton, Xavier
AS 1:1;2:1;
FF 1:;2:;
C1 Laboratoire d’Océanographie Physique et Spatiale, UMR 6523 Univ. Brest-CNRS-IFREMER-IRD, Institut Universitaire Européen de la Mer, rue Dumont d’Urville, 29280 Plouzané, France
C2 UBO, FRANCE
UM LOPS
IN WOS Cotutelle UMR
   DOAJ
IF 1.105
TC 1
UR https://archimer.ifremer.fr/doc/00623/73483/72784.pdf
LA English
DT Article
DE ;sub-mesoscale;fronts;instabilities
AB The Omani Coastal Current (OCC) flowing northward along the southern coast of Oman during the summer monsoon is associated with an upwelling system. The mesoscale circulation of the western Arabian Sea is dominated by energetic mesoscale eddies down to about 1000 m depth. They drive the pathways of the upwelling water masses and the Persian Gulf Outflow water. This paper focuses on the sub-mesoscale frontal dynamics in the OCC by analyzing the results from a regional realistic numerical simulation performed with a primitive equation model. Off the Omani coast, the interaction between the upwelling fronts and the mesoscale eddies triggers the frontogenesis at play in the surface mixed layer during the summer monsoon. In spring, sub-mesoscale eddies are generated at the Cape of Ra’s al Hadd due to the horizontal shear instabilities undergone by the OCC. The OCC also drives and elongates Peddies formed during the Summer monsoon and located below the thermocline. Finally, the interaction between mesoscale eddies and the upwelling system leads to the formation of sub-mesoscale eddies at depth through baroclinic instabilities. 
PY 2020
PD APR
SO Mathematics
SN 2227-7390
PU MDPI AG
VL 8
IS 4
UT 000531824100102
DI 10.3390/math8040562
ID 73483
ER

EF