Browsing Oceanography Faculty Research, Publications and Presentations by Title
Now showing items 68-87 of 151
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Lipid and gross energy content of North Atlantic right whale food, Calanus finmarchicus, in the Bay of Fundy
We address spatial and temporal distribution of abundance, lipid and caloric content and water column energy density of the copepod Calanus finmarchicus, a major food source for the north Atlantic right whale (NARW) Eubalaena ... -
Low-Frequency Fluctuations in the Strait of Gibraltar from Medalpex Sea-Level Data
No abstract available. -
Madden-Julian Oscillation and sea level: Local and remote forcing
The Madden-Julian Oscillation (MJO) is the dominant mode of atmospheric variability in the tropical atmosphere on intraseasonal time scales (i.e., weeks to seasons). This study examines the connection between the MJO and ... -
Mapping coastal optical and biogeochemical variability using an autonomous underwater vehicle and a new bio-optical inversion algorithm
Autonomous underwater vehicles (AUVs) can map water conditions at high spatial ( horizontal and vertical) and temporal resolution, including under cloudy conditions when satellite and airborne remote sensing are not feasible. ... -
Mapping the relationship between northern hemisphere winter surface air temperature and the Madden-Julian oscillation
A regression-based modeling approach is described for mapping the dependence of atmospheric state variables such as surface air temperature (SAT) on the Madden-Julian oscillation (MJO). For the special case of a linear ... -
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The mean surface circulation of the North Atlantic subpolar gyre: A comparison of estimates derived from new gravity and oceanographic measurements
A new mean sea surface topography (MSST) is used to estimate the surface circulation of the subpolar gyre of the northwest Atlantic. The MSST is produced using a new geoid model derived from a blend of gravity data from ... -
Mean surface topography of the northwest Atlantic: Comparison of estimates based on satellite, terrestrial gravity, and oceanographic observations
The accuracy of a new mean sea surface topography (MSST) of the northwest Atlantic is assessed. The MSST is estimated from 12 years of altimeter observations referenced with respect to a new regional geoid based on a blend ... -
Measurements of methyl chloride in the Northwest Atlantic
Methyl chloride was measured directly in seawater using a purge and trap system and gas chromatography with electron capture detection. The results indicate that surface waters of the northwest Atlantic are a source of ... -
Methodological Underestimation of Oceanic Nitrogen Fixation Rates
The two commonly applied methods to assess dinitrogen (N(2)) fixation rates are the (15)N(2)-tracer addition and the acetylene reduction assay (ARA). Discrepancies between the two methods as well as inconsistencies between ... -
Methyl iodide distribution in the ocean and fluxes to the atmosphere
Methyl iodide concentrations have been measured in air samples, surface, and subsurface waters of the NW Atlantic, NE Atlantic, and Pacific Oceans. They are shown to be substantially oversaturated in all surface waters. ... -
Methyl iodide in the NW Atlantic: Spatial and seasonal variation
While the global ocean is an important source of atmospheric methyl iodide (CH(3)I), the major producers of CH(3)I within the ocean remain unclear. During a seasonal study in the NW Atlantic, the relationship between CH(3)I ... -
Methyl iodide in the NW Atlantic; spatial and seasonal variation
While the global ocean is an important source of atmospheric methyl iodide (CH (sub 3) I), the major producers of CH (sub 3) I within the ocean remain unclear. During a seasonal study in the NW Atlantic, the relationship ... -
Methyl-Chloride (Ch3cl) Production in Phytoplankton Cultures
Unialgal nonaxenic cultures of seven species of phytoplankton, including both warm- and cold-water organisms, were examined under halocarbon-clean conditions for the production of CH3Cl. Incubations of all species showed ... -
Mixed-stock analysis of Atlantic cod near the Gulf of St. Lawrence based on microsatellite DNA
The collapse of various stock complexes of cod (Gadus morhua) in the northwest Atlantic has prompted a clarification of relationships among stock components. Here we examine the genetic composition of >2300 cod collected ... -
A model of the circulation on the outer Scotian shelf with open boundary conditions inferred by data assimilation
The circulation on Western Bank is described using data collected in spring 1991 and 1992 as part of an interdisciplinary study of the early life history of Atlantic cod (Gadus morhua). The mean circulation over the crest ... -
Modeling events of sea-surface variability using spectral nudging in an eddy permitting model of the northeast Pacific Ocean
[ 1] Eddies are an important part of the current system that hugs the coasts of British Columbia and Alaska. The ability of "spectral nudging'' to improve the eddy statistics determined from model simulations of this current ... -
Modeling the effects of ultraviolet radiation on embryos of Calanus finmarchicus and Atlantic cod (Gadus morhua) in a mixing environment
It is well established that ultraviolet radiation (UVR, 280-400 nm) harms aquatic organisms. Reductions in productivity have been reported for phytoplankton, ichthyoplankton, and zooplankton in incubations exposed to UVR. ... -
A modified galerkin-spectral model for three-dimensional, barotropic, wind-driven shelf circulation
The authors describe an efficient numerical scheme for calculating wind-driven currents on the continental shelf. Our scheme is based on the spectral approach introduced by Heaps and subsequently modified by Lardner. The ...
