Search

Your search keyword '"Hay, Alex E"' showing total 289 results
Start Over Author "Hay, Alex E"
289 results on '"Hay, Alex E"'

24. Dense overflow into a large silled embayment: tidal modulation, fronts and basin modes

Author

White, M. and Hay, Alex E.

Subjects
Ocean currents -- Research, Ocean temperature -- Research, Biological sciences, Earth sciences
Abstract

The overflow of cold dense Labrador water into a filled embayment caused a series of cold temperature fronts, associated with separate overflow events, to pass through the mooring array. This observation was made over a 70-day period, using a coherent array of current meters and thermistor chain. As the scale of the bay is large, the coriolis force controlled the overflow.

Published
1994

48. High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia.

Author

Horwitz, Rachel M., Hay, Alex E., Burt, William, Cheel, Richard, Salisbury, Joseph, and Thomas, Helmuth

Subjects
CARBON cycle, ATMOSPHERIC carbon dioxide, EMISSIONS (Air pollution), COASTAL ecology
Abstract

Assessing changes in the marine carbon cycle arising from anthropogenic CO2 emissions requires a detailed understanding of the carbonate system's natural variability. Coastal ecosystems vary over short spatial and temporal scales, so their dynamics are not well-described by long-term and broad regional averages. A year-long time series of pCO2, temperature, salinity, and currents is used to quantify the high-frequency variability of the carbonate system at the mouth of the Bay of Fundy, Nova Scotia. The seasonal cycle of pCO2 is modulated by a diel cycle that is larger in summer than in winter, and a tidal contribution that is primarily M2, with amplitude roughly half that of the diel cycle throughout the year. The interaction between tidal currents and carbonate system variables leads to lateral transport by tidal pumping, which moves alkalinity and DIC out of the bay, opposite to the mean flow in the region, and constitutes a new feature of how this strongly tidal region connects to the larger Gulf of Maine and Northwest Atlantic carbon system. These results suggest that tidal pumping could substantially modulate the coastal ocean's response to global ocean acidification in any region with large tides and spatial variation in biological activity, requiring that high-frequency variability be accounted for in assessments of carbon budgets of coastal regions. [ABSTRACT FROM AUTHOR]

Published
2018
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results