Now showing items 41-50 of 5877
Segmentation of plate coupling, fate of subduction fluids, and modes of arc magmatism in Cascadia, inferred from magnetotelluric resistivity
(John Wiley & Sons, 2014-11-11)
Five magnetotelluric (MT) profiles have been acquired across the Cascadia subduction system and transformed using 2-D and 3-D nonlinear inversion to yield electrical resistivity cross sections to depths of ∼200 km. Distinct ...
The East Greenland Spill Jet as an important component of the Atlantic Meridional Overturning Circulation
The recently discovered East Greenland Spill Jet is a bottom-intensified current on the upper continental slope south of Denmark Strait, transporting intermediate density water equatorward. Until now the Spill Jet has ...
Microbes in beach sands : integrating environment, ecology and public health
Beach sand is a habitat that supports many microbes, including viruses, bacteria, fungi and protozoa (micropsammon). The apparently inhospitable conditions of beach sand environments belie the thriving communities found ...
Ocean Carbon and Biogeochemistry News, vol. 7. no. 1
(OCB Project Office, 2014)
Giovannoni, S, K Vergin and C Carlson. Twenty-five years of omics at BATS.
Recent trends and drivers of regional sources and sinks of carbon dioxide
(Copernicus Publications on behalf of the European Geosciences Union, 2015-02-02)
The land and ocean absorb on average just over half of the anthropogenic emissions of carbon dioxide (CO2) every year. These CO2 "sinks" are modulated by climate change and variability. Here we use a suite of nine dynamic ...
Transfer of organic carbon through marine water columns to sediments – insights from stable and radiocarbon isotopes of lipid biomarkers
(Copernicus Publications on behalf of the European Geosciences Union, 2014-12-10)
Compound-specific 13C and 14C compositions of diverse lipid biomarkers (fatty acids, alkenones, hydrocarbons, sterols and fatty alcohols) were measured in sinking particulate matter collected in sediment traps and from ...
Chalcophile behavior of thallium during MORB melting and implications for the sulfur content of the mantle
(John Wiley & Sons, 2014-12-18)
We present new laser ablation ICP-MS trace element concentration data for 28 elements in 97 mid-ocean ridge basalt (MORB) glasses that cover all major spreading centers as well as Tl concentration data for all mineral ...
The composition of dissolved iron in the dusty surface ocean : an exploration using size-fractionated iron-binding ligands
The size partitioning of dissolved iron and organic iron-binding ligands into soluble and colloidal phases was investigated in the upper 150 m of two stations along the GA03 U.S. GEOTRACES North Atlantic transect. The ...
The impact of finite-amplitude bottom topography on internal wave generation in the Southern Ocean
(American Meteorological Society, 2014-11)
Direct observations in the Southern Ocean report enhanced internal wave activity and turbulence in a kilometer-thick layer above rough bottom topography collocated with the deep-reaching fronts of the Antarctic Circumpolar ...
Fortnightly tides and subtidal motions in a choked inlet
Amplitudes of semi-diurnal tidal fluctuations measured at an ocean inlet system decay nearly linearly by 87% between the ocean edge of the offshore ebb-tidal delta and the backbay. A monochromatic, dynamical model for a ...