Gregg A. Jacobs

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[1] Application of recent geometric tools for Lagrangian coherent structures (LCS) shows that material attraction in geostrophic velocities derived from altimetry data imposed an important constraint to the motion of drifters from the Grand Lagrangian Deployment (GLAD) in the Gulf of Mexico. This material attraction is largely transparent to traditional(More)
§ The Editor-in-Chief does not recommend the usage of the term " East Sea " in place of " Japan Sea ". (TWC). Although the TWC is confined to approximately the top 200 m in the JES because of the shallow sill depth in the KTS, the TWC is thought to impact the formation of fronts and eddies and to have a major effect on the circulation in the Ulleung Basin.(More)
When the chemical cues co-occurring with prey vary in time and space, foraging predators profit from an ability to repeatedly associate chemical cues with the presence of their prey. We demonstrate the ability of a predatory arthropod (the plant-inhabiting mite, Phytoseiulus persimilis) to learn the association of a positive stimulus (herbivorous prey,(More)
Reliable forecasts for the dispersion of oceanic contamination are important for coastal ecosystems, society, and the economy as evidenced by the Deepwater Horizon oil spill in the Gulf of Mexico in 2010 and the Fukushima nuclear plant incident in the Pacific Ocean in 2011. Accurate prediction of pollutant pathways and concentrations at the ocean surface(More)
Eulerian velocity fields are derived from 300 drifters released in the Gulf of Mexico by The Consortium for Advanced Research on Transport of Hydrocarbon in the Environment (CARTHE) during the summer 2012 Grand Lagrangian Deployment (GLAD) experiment. These data are directly assimilated into the Navy Coastal Ocean Model (NCOM) four-dimensional variational(More)
he ocean is changing vigorously on a wide range of time and space scales. This variability leads to substantial problems in observing and mod-eling (simulating) the rapidly changing flow field, the ocean's temperature distribution, and more generally the consequences of those changes on a wide variety of scientific, military, and societal problems,(More)
Ocean prediction systems rely on an array of assumptions to optimize their data assimilation schemes. Many of these remain untested, especially at smaller scales, because sufficiently dense observations are very rare. A set of 295 drifters deployed in July 2012 in the northeastern Gulf of Mexico provides a unique opportunity to test these systems down to(More)
meanders. Given an accurate model and accurate forcing (wind stress and heat fluxes), the ocean model will generate mesoscale eddies (see Rhodes et al., this issue). The model may generate eddies with characteristics (size, propagation speed, decay time) similar to observed eddies. However, the mesoscale field is non-deterministic. The model will not(More)
TOPEX/Poseidon has been collecting altimeter data continuously since October 1992. Altimeter data have been used to produce maps of sea surface height, geostrophic velocity, significant wave height, and wind speed. This information is of proven use to mariners as well as to the scientific community. Uses of the data include commercial and recreational(More)
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