The role of internal tides in the nutrient enrichment of Monterey Bay, California

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Shea, R. E., & Broenkow, W. W. (1982). The role of internal tides in the nutrient enrichment of Monterey Bay, California. Estuarine, Coastal and Shelf Science, 15(1), 57-66.
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TitleThe role of internal tides in the nutrient enrichment of Monterey Bay, California
AuthorsR. Shea, W. Broenkow
AbstractSemidiurnal internal tides in Monterey Canyon are shown to be partially responsible for macronutrient enrichment of surface waters in Monterey Bay, California. CTD time series at five stations in the canyon revealed the presence of semidiurnal internal tides with heights between 50 and 120 m. p Thermistor data demonstrated an internal tidal bore at the head of the canyon. Data and theory suggest that internal tidal bores may be breaking, due to either shear instability or direct overturning, thereby enriching the immediate area near the canyon head. Transects normal to Monterey Canyon showed a 20-m thick lens of 12 °C water moving out of the canyon at high internal tide. This lens was then pinched off from the canyon, and led to a density-induced divergence. The nutrient transport associated with the internal tidal divergence could support as much as 30% of the daily primary productivity in the northern part of Monterey Bay during non-upwelling periods. © 1982.
JournalEstuarine, Coastal and Shelf Science
Date1982
Volume15
Issue1
Start page57
End page66
ISSN02727714
SubjectsFLOW OF WATER - Transport Properties, GEOLOGY - Subaqueous, TIDES, COASTAL ZONES, OCEANOGRAPHY
NoteCited By (since 1996):29, Oceanography, CODEN: ECSSD

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