Loop Current rings and the deep circulation in the Gulf of Mexico

Welsh, Susan E.; Inoue, Masamichi

doi:10.1029/2000jc900054

Cited by 65 publications

(64 citation statements)

References 22 publications

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“…and life spans (≈ 10~17 months) are reasonable in view of observations. Romanou et al also examined deep eddies, and confirm Sturges et al's [993] and Welsh and Inoue's [2000] findings that these eddies are spun up by Loop Current's extension and ring-shedding. Figure 2 and Table show that MICOM results in the Yucatan Channel have similar characteristics to those from POM and OPA.…”

Section: Loop Current and Yucatan Channel Flow Variabilitysupporting

confidence: 62%

Loop Current, Rings and Related Circulation in the Gulf of Mexico: A Review of Numerical Models and Future Challenges

Oey¹,

Ezer²,

Lee³

2013

Circulation in the Gulf of Mexico: Observations and Models

173

149

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Section: Loop Current and Yucatan Channel Flow Variabilitysupporting

confidence: 62%

Loop Current, Rings and Related Circulation in the Gulf of Mexico: A Review of Numerical Models and Future Challenges

Oey¹,

Ezer²,

Lee³

2013

Circulation in the Gulf of Mexico: Observations and Models

173

149

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“…Welsh and Inoue (2000) found that the deep cyclone survives longer than the anticyclone in the western Gulf, suggesting a mean cyclonic abyssal flow. Tenreiro et al (2018) show observational evidence of large-scale fluctuations of relative vorticity in the deep layer as expected from modons trapped below westward-moving LC rings.…”

Section: Introductionmentioning

confidence: 99%

“…In the deep abyssal plain of the western basin, numerical studies suggest that the LC rings induce eddies in the bottom layer via vortex stretching, resulting in an anticyclone (cyclone) in the leading (trailing) edge moving westward and locked to the surface eddy (Hurlburt and Thompson 1982;Sturges et al 1993;Welsh and Inoue 2000). Welsh and Inoue (2000) found that the deep cyclone survives longer than the anticyclone in the western Gulf, suggesting a mean cyclonic abyssal flow.…”

Section: Introductionmentioning

confidence: 99%

“…60-100 days; Oey and Lee 2002). Numerical results by Welsh and Inoue (2000) suggest that the cyclonic component of a modon traveling under a Loop Current ring survives longer in the western Gulf of Mexico and hence could result in a mean cyclonic flow in the abyssal plain. This seems confirmed by the analysis made with the current meter mooring data used in Tenreiro et al (2018).…”

mentioning

confidence: 99%

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Dominant Circulation Patterns of the Deep Gulf of Mexico

Pérez-Brunius

Furey

Bower

et al. 2018

Journal of Physical Oceanography

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The large-scale circulation of the bottom layer of the Gulf of Mexico is analyzed, with special attention to the historically least studied western basin. The analysis is based on 4 years of data collected by 158 subsurface floats parked at 1500 and 2500 m and is complemented with data collected by current meter moorings in the western basin during the same period. Three main circulation patterns stand out: a cyclonic boundary current, a cyclonic gyre in the abyssal plain, and the very high eddy kinetic energy observed in the eastern Gulf. The boundary current and the cyclonic gyre appear as distinct features, which interact in the western tip of the Yucatan shelf. The persistence and continuity of the boundary current is addressed. Although high variability is observed, the boundary flow serves as a pathway for water to travel around the western basin in approximately 2 years. An interesting discovery is the separation of the boundary current over the northwestern slope of the Yucatan shelf. The separation and retroflection of the along-slope current appears to be a persistent feature and is associated with anticyclonic eddies whose genesis mechanism remains to be understood. As the boundary flow separates, it feeds into the westward flow of the deep cyclonic gyre. The location of this gyre-named the Sigsbee Abyssal Gyre-coincides with closed geostrophic contours, so eddy-topography interaction via bottom form stresses may drive this mean flow. The contribution to the cyclonic vorticity of the gyre by modons traveling under Loop Current eddies is discussed.

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“…The Sigsbee abyssal plain occupies most of the central portion of the basin and is characterized by thin turbidite layers (Bryant et al, 1991). The surface circulation is dominated by the Loop Current and interaction with eddies (Welsh and Inoue, 2000), in general the water column is thermally stratified and displays space and time variability along the continental shelf (Monreal-Gómez and Salas de León, 1997).…”

Section: Methodsmentioning

confidence: 99%

Updated checklist and identification of areas of endemism of benthic amphipods (Caprellidea and Gammaridea) from offshore habitats in the SW Gulf of Mexico

Winfield¹,

Escobar²,

Morrone³

2006

Sci. Mar.

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SUMMARY: An updated checklist of the benthic amphipods associated with soft bottoms in the SW Gulf of Mexico has been made and the areas of endemism have been identified. Amphipods were collected in a depth interval of 25 to 3700 m during six cruises from 1994 to 1999. A total number of 56 species were identified, 11 belonging to the suborder Caprellidea and 45 to the suborder Gammaridea. Thirteen species extended their geographical distribution within the Gulf of Mexico and four species were considered new records in the Gulf of Mexico. A biogeographic analysis based on the shared species and the parsimony criterion helped identify three areas of endemism in the SW Gulf of Mexico. They were named: area A, a small area on the continental shelf of the Bay of Campeche; area B, the continental slope of the Bay of Campeche; and area C, the lower continental slope of the Mexican ridges extending into the western Sigsbee abyssal plain. These areas are defined in terms of their complex topography that may help isolate habitats that promote endemicity.

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Loop Current rings and the deep circulation in the Gulf of Mexico

Abstract: Abstract.A

Cited by 65 publications

References 22 publications

Loop Current, Rings and Related Circulation in the Gulf of Mexico: A Review of Numerical Models and Future Challenges

Loop Current, Rings and Related Circulation in the Gulf of Mexico: A Review of Numerical Models and Future Challenges

Dominant Circulation Patterns of the Deep Gulf of Mexico

Updated checklist and identification of areas of endemism of benthic amphipods (Caprellidea and Gammaridea) from offshore habitats in the SW Gulf of Mexico

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