Temporal and spatial variations in suspended matter in continental shelf and slope waters off the north-eastern United States

Estuarine, Coastal and Shelf Science
By: , and 

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Abstract

Seston in waters of Georges Bank originates primarily from biological production and from resuspension of bottom sediments. The concentrations of suspended matter observed on the central shoals are more influenced by storms than by seasonal changes. Winter storms produce highest concentrations of non-combustible material throughout the water column, and summer storms appear to increase biological production by mixing additional nutrients into the photic zone. On the south-east flank of the bank, in water depths between 80 and 200 in, the concentrations of total suspended matter and non-combustible material show little variation compared with the central shoals, and storm effects are far less noticeable.

Highest concentrations (>15 mg 1βˆ’1) of suspended matter occur in bottom waters south of Nantucket Island after winter storms and appear to be primarily resuspended bottom sediment. Resuspended sediment is also common in near-bottom waters of the south-western Gulf of Maine, and occasionally near the intersection of the shelf/slope water mass front and the bottom.

Seasonal variations were observed in the distribution and species composition of phytoplankton. Coccoliths are predominant on the central bank during the winter, but during the spring and summer they are concentrated on the eastern flank at deeper depths.

Study Area

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Temporal and spatial variations in suspended matter in continental shelf and slope waters off the north-eastern United States
Series title Estuarine, Coastal and Shelf Science
DOI 10.1016/S0302-3524(81)80077-1
Volume 13
Issue 2
Year Published 1981
Language English
Publisher Elsevier
Contributing office(s) Woods Hole Coastal and Marine Science Center, Coastal and Marine Geology Program
Description 22 p.
First page 213
Last page 234
Country United States
Other Geospatial Georges Bank