Accession Number:

ADA470198

Title:

Tropical Wave-Induced Oceanic Eddies at Cabo Corrientes and the Maria Islands, Mexico

Descriptive Note:

Journal article

Corporate Author:

NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV

Report Date:

2007-05-30

Pagination or Media Count:

18.0

Abstract:

1 TOPEXPoseidon and ERS-2 satellite altimeter observations and the 116 degree Naval Research Laboratory NRL Layered Ocean Model NLOM show the existence of anticyclonic eddies in the Cabo Corrientes - Maria Islands region off the Mexican West Coast. Analysis of the results demonstrates that 1 The Cabo Corrientes - Maria Islands region is characterized by mean poleward coastal currents, driven by local wind forcing. 2 The local currents are intensified by the arrival of baroclinic down welling coastally trapped waves CTWs, generated in the equatorial Pacific. 3 Anticyclonic eddies are generated as the intensified local currents pass cape-like features in the coastline or shelf-break geometry. 4 From I 979 to 2001 the CTWs generated an average of 2.35 2.5 Cabo Corrientes Maria Islands anticyclonic eddies per year. 5 The formation of eddies carries interannually. increasing decreasing during El Nino La Nina years. Comparison of a variety of numerical simulations. which include different dynamics andor different wind forcing andor different topographic effects, suggests that bottom topography. local wind, and baroclinic instabilities are not essential for the eddy generation. It is a the capes at Cabo Corrientes and the Maria Islands and b the strong transient events associated with the CTWs that are essential to the formation of these newly recognized eddies

Subject Categories:

  • Physical and Dynamic Oceanography
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE