HR: 12:10h
AN: OS32A-08    [Abstracts]
TI: Features observed in the Southern Gulf of Mexico
AU: * Monreal-Gomez, M A
EM: monreal@mar.icmyl.unam.mx
AF: ICML-UNAM, Circuito Exterior S/N Cd. Universitaria, Mexico, DF 04510, Mexico
AU: Salas-de-Leon, D A
EM: salas@mar.icmyl.unam.mx
AB: The southern Gulf of Mexico has been studied at different scale. The analysis of dynamic topography shows a cyclonic eddy that dominates mesoscale circulation, its formation and westwards shift have been simulated by a numerical model as a result of the variation of the intensity of the Yucatan Current and the topography of the Bay of Campeche . There are hydrographic features of smaller scale such as topographical effect at the western margin of the Yucatan shelf which induce an uplift of cool water, and internal waves at the shelf edge. Over the Campeche canyon a subsurface anticyclonic-cyclonic eddy pair appears as well as an associated thermal front. On the other hand, the southern gulf coastal waters are influenced by river runoff, such as from the Grijalva- Usumacinta Rivers system, this runoff induces haline fronts and some times thermal and haline gradients occur with surface temperature and salinity increasing offshore, where low temperature and salinity values produce an inverse effect on water density.
DE: 4532 General circulation (1218, 1222)
SC: Ocean Sciences [OS]
MN: 2007 Joint Assembly