Sub-mesoscale coastal eddies observed by high frequency radar: A new mechanism for delivering nutrients to kelp forests in the Southern California Bight

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Bassin, C. J., Washburn, L., Brzezinski, M., & McPhee-Shaw, E. (2005). Sub-mesoscale coastal eddies observed by high frequency radar: A new mechanism for delivering nutrients to kelp forests in the Southern California Bight. Geophysical Research Letters, 32(12), 1-4. doi:10.1029/2005GL023017
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TitleSub-mesoscale coastal eddies observed by high frequency radar: A new mechanism for delivering nutrients to kelp forests in the Southern California Bight
AuthorsC. Bassin, L. Washburn, M. Brzezinski, E. McPhee-Shaw
AbstractSub-mesoscale eddies are described along the mainland coast of the Santa Barbara Channel based on observations from a network of high frequency (HF), current-measuring radars and near-shore moorings. The eddies are 4-15 km in diameter and typically last about 2 days, although some last up to 6 days. Most eddies within the radar coverage area are anti-cyclonic with relative vorticities of -0.4 f to -0.8 f where f is the Coriolis parameter, but cyclonic eddies are also observed. Moored observations over the inner shelf (12 m water depth) of a sequence of two eddies in December 2001 show an increase in nitrate plus nitrite from the background levels of 1-2 μM to a maximum of 10-12 μM when the eddies are present. We speculate that these eddies are an important transport mechanism for nutrients and biogenic particles to inner shelf ecosystems of the Southern California Bight. Copyright 2005 by the American Geophysical Union.
JournalGeophysical Research Letters
Date2005
Volume32
Issue12
Start page1
End page4
ISSN0094-8276
SubjectsCoastal zones, Ecosystems, Forestry, Mooring, Ocean currents, Radar measurement, Time series analysis, Vortex flow, Current-measuring radars, High frequency radar, Sub-mesoscale eddies, Oceanography, coastal water, eddy, kelp forest, nearshore dynamics, nutrient dynamics, Coasts, Oceans, Radar, Vortices, oceanic regions, Pacific Ocean, Southern California Bight, World
NoteCited By (since 1996):30, Oceanography, CODEN: GPRLA, Downloaded from: http://onlinelibrary.wiley.com/doi/10.1029/2005GL023017/pdf (14 June 2014).

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