Now showing items 841-850 of 5486
The subtropical nutrient spiral
(American Geophysical Union, 2003-12-04)
We present an extended series of observations and more comprehensive analysis of a tracer-based measure of new production in the Sargasso Sea near Bermuda using the 3He flux gauge technique. The estimated annually averaged ...
An improvement in the small-volume technique for determining thorium-234 in seawater
The recently developed 2‐5 L small‐volume MnO2 coprecipitation method for determining 234Th in seawater has provided a new way to substantially increase, both temporally and spatially, the sampling resolution of 234Th ...
Introduction to special section : U.S. GLOBEC : physical processes on Georges Bank (GLOBEC)
(American Geophysical Union, 2003-11-18)
Detection of change in the Arctic using satellite and in situ data
(American Geophysical Union, 2003-12-24)
The decade of the 1990s was the warmest decade of the last century, while the year 1998 was the warmest year ever observed by modern techniques, with 9 out of 12 months of the year being the warmest months. Satellite ice ...
Coupled radon, methane and nitrate sensors for large-scale assessment of groundwater discharge and non-point source pollution to coastal waters
We constructed a survey system of radon/methane/nitrate/salinity to find sites of submarine groundwater discharge (SGD) and groundwater nitrate input. We deployed the system in Waquoit Bay and Boston Harbor, MA where we ...
Acoustic ducting, reflection, refraction, and dispersion by curved nonlinear internal waves in shallow water
(IEEE Oceanic Engineering Society, 2010-02-08)
Nonlinear internal waves in shallow water have been shown to be effective ducts of acoustic energy, through theory, numerical modeling, and experiment. To date, most work on such ducting has concentrated on rectilinear ...
Acoustic mode radiation from the termination of a truncated nonlinear internal gravity wave duct in a shallow ocean area
(Acoustical Society of America, 2009-10)
Horizontal ducting of sound between short-wavelength nonlinear internal gravity waves in coastal environments has been reported in many theoretical and experimental studies. Important consequences arising at the open end ...
KAPEX RAFOS float data report 1997-1999 part B : float trajectories at 750 m in the Benguela Current
(Woods Hole Oceanographic Institution, 2003-06)
Thirty-two RAFOS floats were launched at the depth of intermediate water, near 750 m, in the Benguela Current along 30S and its extension along 7W. The floats were tracked acoustically for two years during 1997–1999. ...
Influence of diurnal heating on stratification and residual circulation of Georges Bank
(American Geophysical Union, 2003-11-22)
The influence of the diurnal heat flux on summer stratification and residual circulation over Georges Bank was examined using a three-dimensional primitive equation numerical circulation model. For a given spatially uniform ...
Wind-induced, cross-frontal exchange on Georges Bank : a mechanism for early summer on-bank biological particle transport
(American Geophysical Union, 2003-11-29)
Water exchange across the tidal-mixing front on the southern flank of Georges Bank (GB) is examined using a two-dimensional (2D) primitive equation ocean model. The model domain features a cross-frontal transect including ...