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Eddies in the Hawaiian Archipelago Region: Formation, Characterization, and Potential Implications on Larval Retention of Reef Fish
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2020
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Source: Journal of Geophysical Research: Oceans, 125(5)
[PDF-16.27 MB]
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Journal Title:Journal of Geophysical Research: Oceans
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Description:Here we present an assessment of eddy activity in a 3,500 ×2,000 km region of the North Pacific. Eddies were identified and tracked within a numerical simulation that used the Massachusetts Institute of Technology general circulation model and an eddy characterization algorithm. Spatially, eddybirths were more frequent: (1) nearshore (cyclones) and offshore (anticyclones) on the windward side of the main Hawai‘ian Islands; (2) in patches of cyclones and anticyclones that resembled the dipole structure of wind stress curl along the islands’ leeward side; and (3) in zonal patches of eddies of both polarities westand north of the islands. Temporally, high eddy activities occurred in spring. There was a meridional distribution of eddy lifespans, which increased northward. Cyclones were more abundant, longer-lived, smaller, and more nonlinear. Reef fish spawning locations in Hawai‘i coincide with the regions of higheddy activity, with nonlinear eddies responsible for high larval retention.
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Source:Journal of Geophysical Research: Oceans, 125(5)
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ISSN:2169-9275;2169-9291;
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Rights Information:Other
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