Browsing Oceanography by Title
Now showing items 49-68 of 152
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Enhanced ocean carbon storage from anaerobic alkalinity generation in coastal sediments
(European Geosciences Union, 2008-09)The coastal ocean constitutes the crucial link between land, the open ocean and the atmosphere. Furthermore, its shallow water column permits close interactions between the sedimentary and atmospheric compartments, which ... -
Estimating mixed layer nitrate in the North Atlantic Ocean
(2010)Here we present an equation for the estimation of nitrate in surface waters of the North Atlantic Ocean (40 degrees N to 52 degrees N, 10 degrees W to 60 degrees W). The equation was derived by multiple linear regression ... -
Estimating the monthly pCO(2) distribution in the North Atlantic using a self-organizing neural network
(2009)Here we present monthly, basin-wide maps of the partial pressure of carbon dioxide (pCO(2)) for the North Atlantic on a 1 degrees latitude by 1 degrees longitude grid for years 2004 through 2006 inclusive. The maps have ... -
Estimation of Low-Frequency Wind Stress Fluctuations Over the Open Ocean
(1983)No abstract available. -
Evidence for asymmetric nonvolcanic rifting and slow incipient oceanic accretion from seismic reflection data on the Newfoundland margin
(2006-09)[ 1] Prestack depth migrations of seismic reflection data collected around the Ocean Drilling Program (ODP) Leg 210 transect on the Newfoundland nonvolcanic margin delineate three domains: ( 1) extended continental crust, ... -
Evolution of orogenic wedges and continental plateaux: insights from crustal thermal-mechanical models overlying subducting mantle lithosphere
(2003-04)The links between an early phase of orogenesis, when orogens are commonly wedge shaped, and a later phase, with a plateau geometry, are investigated using coupled thermal-mechanical models with uniform velocity subduction ... -
Extinct spreading center in the Labrador Sea: Crustal structure from a two-dimensional seismic refraction velocity model
(1995-02/10)The Labrador Sea contains a rare example of an abandoned mid-ocean ridge where active accretion of oceanic crust ceased due to a change in the spreading geometry of lithospheric plates. Seismic refraction data were collected ... -
Extraction of tidal streams from a ship-borne acoustic Doppler current profiler using a statistical-dynamical model
(1996-04)We present a method for extracting the barotropic tide directly from the time-space series of horizontal velocity obtained by a ship-borne acoustic Doppler current profiler (ADCP). The method is conceptually straightforward, ... -
Fine-Scale Vertical Resolution of Chlorophyll and Photosynthetic Parameters in Shallow-Water Benthos
(1995-06)The vertical distributions of chlorophyll concentration and photosynthetic parameters of sediment-associated microalgae were measured with a resolution of 1 mm. Sediment and the overlying water were sampled at 3 sandy, ... -
GCM experiments on changes in atmospheric predictability associated with the PNA pattern and tropical SST anomalies
(2002-08)Based on results from a simple three-level quasi-geostrophic model, Lin and Derome suggested that atmospheric predictability is influenced by the Pacific/North American (PNA) pattern. In the present study, predictability ... -
Genomic islands of divergence and their consequences for the resolution of spatial structure in an exploited marine fish
(2013-04)As populations diverge, genomic regions associated with adaptation display elevated differentiation. These genomic islands of adaptive divergence can inform conservation efforts in exploited species, by refining the ... -
Geochemical Profiles in the Central Arctic Ocean - their Relation to Freezing and Shallow Circulation
(1983)No abstract available. -
Heat flow in the Balearic and Tyrrhenian basins, western Mediterranean
(1985-01/10)Presents the results of three detailed heat flow surveys which are used to investigate the variations of heat flow and age of the Balearic and Tyrrhenian basins in the western Mediterranean. The heat flow values are within ... -
Heat-Flow, Depth, and Crustal Thickness of Marginal Basins of South Philippine Sea
(1976)No abstract available. -
High frequency acoustic observations of episodic mixing events in Lunenburg Bay
(Canadian Acoust. Assoc, 2006-12)High frequency (0.6-5 MHz) acoustic backscatter data has been collected during the past four years (2002-2006) at Dalhousie's coastal ocean observing system at Lunenburg Bay (www.cmep.ca). Severe storm events, including ... -
Hypotheses to Explain High-Nutrient Conditions in the Open Sea
(1991-12)Oceanic high-nutrient, low-chlorophyll waters are characterized principally by the persistence of major nutrients at the sea surface. This condition indicates control of autotrophic production by something other than NO3 ... -
Impact of ultraviolet radiation on marine crustacean zooplankton and ichthyoplankton: a synthesis of results from the estuary and Gulf of St. Lawrence, Canada
(2000)The objectives of the research program reported upon here were (1) to measure ambient levels of UV radiation and determine which variables most strongly affected its attenuation in the waters of the estuary and Gulf of St. ... -
Inferred influence of nutrient availability on the relationship between Sun-induced chlorophyll fluorescence and incident irradiance in the Bering Sea
(American Geophysical Union, 2000 Florida Ave., N.W. Washington DC 20009 USA, [mailto:service@agu.org], [URL:http://www.agu.org], 2008-08)This study examines variability in the relationship between Sun-induced chlorophyll fluorescence and incident solar irradiance as a potential diagnostic of the nutritional status of phytoplankton. The study site is the ... -
Inhibition of marine photosynthesis by ultraviolet radiation: Variable sensitivity of phytoplankton in the Weddell-Scotia Confluence during the austral spring
(1998-05)To assess the potential impacts of ozone depletion on photosynthesis in the Southern Ocean, we need to know more about effects of ultraviolet radiation (UV) on phytoplankton in Antarctic waters, where, in addition to ... -
An isotopic labeling method for determining production of volatile organohalogens by marine microalgae
(2000-12)An isotopic method has been developed to establish the biological production of volatile organohalogens. The marine microalgae Porphyridium purpureum and Dunaliella tertiolecta were grown in seawater medium containing ...