Now showing items 871-880 of 5486
Lateral circulation and sediment transport driven by axial winds in an idealized, partially mixed estuary
(American Geophysical Union, 2009-12-03)
A 3D hydrodynamic model (ROMS) is used to investigate lateral circulation in a partially mixed estuary driven by axial wind events and to explore the associated transport of sediments. The channel is straight with a ...
Warm Atlantic surface water inflow to the Nordic seas 34–10 calibrated ka B.P.
(American Geophysical Union, 2008-01-15)
A number of short-lasting warm periods (interstadials) interrupted the otherwise cold climate of the last glacial period. These events are supposedly linked to the inflow of the warm Atlantic surface water to the Nordic ...
Interpreting sea surface temperature from strontium/calcium ratios in Montastrea corals : link with growth rate and implications for proxy reconstructions
(American Geophysical Union, 2008-07-31)
We analyzed strontium/calcium ratios (Sr/Ca) in four colonies of the Atlantic coral genus Montastrea with growth rates ranging from 2.3 to 12.6 mm a−1. Derived Sr/Ca–sea surface temperature (SST) calibrations exhibit ...
Low reservoir ages for the surface ocean from mid-Holocene Florida corals
(American Geophysical Union, 2008-05-13)
The 14C reservoir age of the surface ocean was determined for two Holocene periods (4908–4955 and 3008–3066 calendar (cal) B.P.) using U/Th-dated corals from Biscayne National Park, Florida, United States. We found that ...
Did North Atlantic overturning halt 17,000 years ago?
(American Geophysical Union, 2008-01-31)
Models indicate that a complete shutdown of deep and intermediate water production is a possible consequence of extreme climate conditions in the northern North Atlantic, and the high ratio of 231Pa to 230Th on Bermuda ...
Sea surface temperature and salinity variability at Bermuda during the end of the Little Ice Age
(American Geophysical Union, 2008-07-09)
We use geochemical and isotope measurements on a 225-year old brain coral (Diploria labyrinthiformis) from the south shore of Bermuda (64°W, 32°N) to construct a record of decadal-to-centennial-scale climate variability. ...
Correction to “Decadal analysis of hydrography and in situ nutrient budgets in the western and eastern North Atlantic subtropical gyre”
(American Geophysical Union, 2008-03-07)
New broadband methods for resonance classification and high-resolution imagery of fish with swimbladders using a modified commercial broadband echosounder
(Oxford University Press, 2010-01-05)
A commercial acoustic system, originally designed for seafloor applications, has been adapted for studying fish with swimbladders. The towed system contains broadband acoustic channels collectively spanning the frequency ...
Ocean acidification’s potential to alter global marine ecosystem services
(Oceanography Society, 2009-12)
Ocean acidification lowers the oceanic saturation states of carbonate minerals and decreases the calcification rates of some marine organisms that provide a range of ecosystem services such as wild fishery and aquaculture ...