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May 2, 2008 - Oceanus Update

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Alexandrium surface live counts. R/V Oceanus April 28 - May 5, 2008

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Alexandrium surface live counts. R/V Oceanus April 28 - May 5, 2008 (D. Anderson & D. McGillicuddy laboratories, Woods Hole Oceanographic Institution)

Our Georges Bank survey is complete (see map on right).  Surface live counts indicate cell concentrations ranging from zero to several hundred cells per liter, with highest concentrations on the northwest part of the bank.  Tens to hundreds of cells per liter extend through the western half of the crest to the southern flank.  Two distinct water mass anomalies are present on the southern flank: a warm salty intrusion to the west, and a cold fresh tongue to the east, which appears to have originated from a crossover of Scotian Shelf water visible in satellite imagery.  Both of these water mass anomalies are nearly devoid of cells, thus these water mass anomalies may be contributing to the relatively low cell concentrations on that part of the bank.

We are steaming to the WGOM now, and expect to complete transects at Casco Bay, Saco Bay, Cape Ann, and Boston before it is time to head for the barn. ETA in WH is between 0800 and 1000 Monday.

Dennis McGillicuddy
Chief Scientist

Last updated: July 1, 2019

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