Submesoscale coherent vortices in the Gulf Stream.
MetadataShow full item record
Keywordsubmesoscale coherent vortices; glider; seismic observations; Gulf Stream; topographic interactions; Charleston Bump
Seismic images and glider sections of the Gulf Stream front along the U.S. eastern seaboard capture deep, lens‐shaped submesoscale features. These features have radii of 5–20 km, thicknesses of 150–300 m, and are located at depths greater than 500 m. These are typical signatures of anticyclonic submesoscale coherent vortices. A submesoscale‐resolving realistic simulation, which reproduces submesoscale coherent vortices with the same characteristics, is used to analyze their generation mechanism. Submesoscale coherent vortices are primarily generated where the Gulf Stream meets the Charleston Bump, a deep topographic feature, due to the frictional effects and intense mixing in the wake of the topography. These submesoscale coherent vortices can transport waters from the Charleston Bump's thick bottom mixed layer over long distances and spread them within the subtropical gyre. Their net effect on heat and salt distribution remains to be quantified.
Author Posting. © American Geophysical Union, 2019. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 46(5), (2019):2704-2714, doi:10.1029/2019GL081919.
Suggested CitationGula, J., Blacic, T. M., & Todd, R. E. (2019). Submesoscale coherent vortices in the Gulf Stream. Geophysical Research Letters, 46(5), 2704-2714.
Showing items related by title, author, creator and subject.
Kassis, Patricia (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2000-08)With Lagrangian and hydrographic data taken in the deep Brazil Basin, we identify several submesoscale coherent vortices (SCVs). These features contrast with SCV paradigms in that float data indicate approximately equal ...
Balasuriya, Sanjeeva; Ouellette, Nicholas T.; Rypina, Irina I. (2018-01-19)The notion of a Lagrangian Coherent Structure (LCS) is by now well established as a way to capture transient coherent transport dynamics in unsteady and aperiodic fluid flows that are known over finite time. We show that ...
Submesoscale processes at shallow salinity fronts in the Bay of Bengal : observations during the winter monsoon Ramachandran, Sanjiv; Tandon, Amit; MacKinnon, Jennifer A.; Lucas, Andrew J.; Pinkel, Robert; Waterhouse, Amy F.; Nash, Jonathan D.; Shroyer, Emily L.; Mahadevan, Amala; Weller, Robert A.; Farrar, J. Thomas (American Meteorological Society, 2018-02-26)Lateral submesoscale processes and their influence on vertical stratification at shallow salinity fronts in the central Bay of Bengal during the winter monsoon are explored using high-resolution data from a cruise in ...