Circulation and cross-shelf transport in the Florida Big Bend

Todd, Austin C.; Morey, Steven L.; Chassignet, Eric P.

doi:10.1357/002224014815540660

Cited by 9 publications

(7 citation statements)

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“…This circulation pattern is revealed in the general direction of trajectories of the drifters (Figure 1). strength of the northward and southward winds (southward being stronger) promotes a residual jet flowing southeastward along the shelf of the northeastern Gulf [19]. This circulation pattern is revealed in the general direction of trajectories of the drifters (Figure 1).…”

Section: Drifter Trajectories and Velocitymentioning

confidence: 90%

“…Atmospheric cold fronts and extratropical cyclones dominate the synoptic variability of winds over this region during this time, with winds alternating from southerly (northward) ahead of a cold front and rapidly turning clockwise to northerly (southward) following passage of the front ( Figure 5). Asymmetry in the strength of the northward and southward winds (southward being stronger) promotes a residual jet flowing southeastward along the shelf of the northeastern Gulf [19]. This circulation pattern is revealed in the general direction of trajectories of the drifters (Figure 1).…”

Section: Drifter Trajectories and Velocitymentioning

confidence: 93%

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Measurement Characteristics of Near-Surface Currents from Ultra-Thin Drifters, Drogued Drifters, and HF Radar

et al. 2018

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Concurrent measurements by satellite tracked drifters of different hull and drogue configurations and coastal high-frequency radar reveal substantial differences in estimates of the near-surface velocity. These measurements are important for understanding and predicting material transport on the ocean surface as well as the vertical structure of the near-surface currents. These near-surface current observations were obtained during a field experiment in the northern Gulf of Mexico intended to test a new ultra-thin drifter design. During the experiment, thirty small cylindrical drifters with 5 cm height, twenty-eight similar drifters with 10 cm hull height, and fourteen drifters with 91 cm tall drogues centered at 100 cm depth were deployed within the footprint of coastal High-Frequency (HF) radar. Comparison of collocated velocity measurements reveals systematic differences in surface velocity estimates obtained from the different measurement techniques, as well as provides information on properties of the drifter behavior and near-surface shear. Results show that the HF radar velocity estimates had magnitudes significantly lower than the 5 cm and 10 cm drifter velocity of approximately 45% and 35%, respectively. The HF radar velocity magnitudes were similar to the drogued drifter velocity. Analysis of wave directional spectra measurements reveals that surface Stokes drift accounts for much of the velocity difference between the drogued drifters and the thin surface drifters except during times of wave breaking.

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Section: Drifter Trajectories and Velocitymentioning

confidence: 90%

Section: Drifter Trajectories and Velocitymentioning

confidence: 93%

Measurement Characteristics of Near-Surface Currents from Ultra-Thin Drifters, Drogued Drifters, and HF Radar

et al. 2018

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“…The northeastern GoM, also known as the Big Bend region of Florida, lies upon the West Florida Shelf which represents 75% of the U.S. GoM shelf area and includes "ecologically productive and biologically rich marine habitat" (Coleman et al, 2011). This region provides important nursery habitat for several ecologically and economically important species including many fish and shellfish species (Todd et al, 2014). This area has low-energy shorelines and habitat that includes seagrass beds, salt marshes, and oyster reefs (Seavey et al, 2011;Kaplan et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

The Importance of the Northeastern Gulf of Mexico to Foraging Loggerhead Sea Turtles

et al. 2020

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Identification of high-use foraging sites where imperiled sea turtles are resident remains a globally-recognized conservation priority. In the biodiverse Gulf of Mexico (GoM), recent telemetry studies highlighted post-nesting foraging sites for federally threatened loggerhead turtles (Caretta caretta). Our aim here was to discern loggerhead use of additional northern GoM regions that may serve as high-use foraging sites. Thus, we used satellite tracking and switching state-space modeling to show that the Big Bend region off the northwest Florida coast is a coastal foraging area that supports imperiled adult female loggerhead turtles tracked from different nesting subpopulations. From 2011 to 2016, we satellite-tagged 15 loggerheads that nested on four distinct beaches around the GoM: Dry Tortugas

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“…Besides providing nutrients for photosynthesis, cross-shelf movement of water plays a role in larval dispersal and retention on both the east and west coasts of Florida (Weisberg et al 2014, Werner et al 1997. Gag grouper spawning aggregation sites are well positioned to take advantage of seasonal cross-shore currents (Todd 2013). Thus, the adaptability of populations will depend on the plasticity of animal behavior and stock demographics.…”

Section: Changes In Oceanic Flows and Windsmentioning

confidence: 99%

Climate Change Impacts on Florida’s Fisheries and Aquaculture Sectors and Options for Adaptation

Lorenzen¹,

Ainsworth²,

Baker³

et al. 2017

Florida’s Climate: Changes, Variations, &Amp; Impacts

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Florida supports diverse marine and freshwater fisheries and a significant aquaculture industry with a combined economic impact of approximately 15 billion US$. We begin by describing the characteristics Key Messages• Sea level rise, more frequent severe storms, coastal habitat loss associated with both factors, changes in nutrient dynamics, and ocean acidification are likely to impact the productivity of Florida's marine fisheries. Some of these factors will also affect fisheries access.• Florida's freshwater fisheries will be impacted by increased hydrological variability, increased temperatures, and more frequent severe storms. Shallow lakes may respond by switching from a clear to a turbid, phytoplankton-dominated state that provides poor sport fishing. Greater hydrological variability will also exacerbate fishing access issues.• Among the aquaculture sectors, shellfish aquaculture is particularly sensitive to multiple drivers including sea level rise, coastal habitat loss, increased frequency of harmful algal blooms and ocean acidification. Ornamental fish culture and other forms of intensive aquaculture under controlled conditions will be relatively insensitive to climate change.• Key adaptation options for marine fisheries include switching of species, locations and fishing methods, while adapting catch limits to changes in productivity. In freshwater fisheries, on the other hand, water and habitat management will be key to adaptation. Change in farming methods will be important in aquaculture, along with species and location changes, particularly in the shellfish industry. Aquaculture for fisheries enhancement and ecological restoration can aid adaptation in both marine and freshwater fisheries. Adaptation will benefit from awareness of drivers and impact pathways, monitoring of a broad suite of impact indicators, and adaptive decision-making. 428 • KAI LORENZEN ET AL.

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Circulation and cross-shelf transport in the Florida Big Bend

Cited by 9 publications

References 0 publications

Measurement Characteristics of Near-Surface Currents from Ultra-Thin Drifters, Drogued Drifters, and HF Radar

Measurement Characteristics of Near-Surface Currents from Ultra-Thin Drifters, Drogued Drifters, and HF Radar

The Importance of the Northeastern Gulf of Mexico to Foraging Loggerhead Sea Turtles

Climate Change Impacts on Florida’s Fisheries and Aquaculture Sectors and Options for Adaptation

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