Now showing items 1851-1860 of 6432
Thallium-isotopic compositions of euxinic sediments as a proxy for global manganese-oxide burial
Thallium (Tl) isotopes are a new and potentially powerful paleoredox proxy that may track bottom water oxygen conditions based on the global burial flux of manganese oxides. Thallium has a residence time of ~20 thousand ...
Mechanisms of variability in a convective basin
(Sears Foundation for Marine Research, 2009-05)
An idealized model for a convective basin is used to investigate the mechanisms of variability of the formation and export of dense water. In this model, which consists of two isopycnic layers, dense water formation is ...
An assessment of the Atlantic and Arctic sea–air CO2 fluxes, 1990–2009
(Copernicus Publications on behalf of the European Geosciences Union, 2013-01-29)
The Atlantic and Arctic Oceans are critical components of the global carbon cycle. Here we quantify the net sea–air CO2 flux, for the first time, across different methodologies for consistent time and space scales for the ...
Identification of possible source markers in marine dissolved organic matter using ultrahigh resolution mass spectrometry
Marine dissolved organic matter (DOM) is one of the most heterogeneous and largest pools of reactive carbon on earth, rivaling in mass the carbon in atmospheric carbon dioxide. Nevertheless, the molecular-level composition ...
Striking the right balance in right whale conservation
(NRC Research Press, 2009-08-14)
Despite many years of study and protection, the North Atlantic right whale (Eubalaena glacialis) remains on the brink of extinction. There is a crucial gap in our understanding of their habitat use in the migratory corridor ...
A data archive from Discovery 247, a process study of the Faroe Bank Channel overflow
CTD, XCP and LADCP data acquired during the June 2000 Discovery cruise 247 to Faroe Bank Channel are provided in a data archive that may be accessed by Matlab 7.X.
Variation in Serripes groenlandicus (Bivalvia) growth in a Norwegian high-Arctic fjord : evidence for local- and large-scale climatic forcing
We examined the growth rate of the circumpolar Greenland Cockle (Serripes groenlandicus) over a period of 20 years (1983-2002) from Rijpfjord, a high-Arctic fjord in northeast Svalbard (80º10´N, 22°15´E). This period ...
Development and application of a monoclonal-antibody technique for counting Aureococcus anophagefferens, an alga causing recurrent brown tides in the Mid-Atlantic United States
(American Society for Microbiology, 2003-09)
A method was developed for the rapid detection and enumeration of Aureococcus anophagefferens, the cause of harmful algal blooms called "brown tides" in estuaries of the Mid-Atlantic United States. The method employs a ...
Correction of shallow-water electromagnetic data for noise induced by instrument motion
An unexpected noise source was found in magnetic and sometimes electric field data recorded on the bottom of lakes in the Archean Slave craton (NW Canada) during warm seasons. The noise is due to instrument motion and in ...
Laurentian crustal recycling in the Ordovician Grampian Orogeny : Nd isotopic evidence from western Ireland
(Cambridge University Press, 2004-04-21)
Because magmatism associated with subduction is thought to be the principal source for continental crust generation, assessing the relative contribution of pre-existing (subducted and assimilated) continental material to ...