A review of the Si cycle in the modern ocean: recent progress and missing gaps in the application of biogenic opal as a paleoproductivity proxy
Due to the major role played by diatoms in the biological pump of CO2, and to the presence
of silica-rich sediments in areas that play a major role in air–sea CO2 exchange (eg the …
of silica-rich sediments in areas that play a major role in air–sea CO2 exchange (eg the …
The Southern Ocean during the ice ages: A review of the Antarctic surface isolation hypothesis, with comparison to the North Pacific
Abstract The Southern Ocean is widely recognized as a potential cause of the lower
atmospheric concentration of CO 2 during ice ages, but the mechanism is debated. Focusing …
atmospheric concentration of CO 2 during ice ages, but the mechanism is debated. Focusing …
Sedimentary nitrogen isotopic ratio as a recorder for surface ocean nitrate utilization
MA Altabet, R Francois - Global biogeochemical cycles, 1994 - Wiley Online Library
In two contrasting regions of the ocean, the equatorial Pacific and the southern ocean, the
δ15N of core top sediments were strongly related to [NO3−] in surface waters. With distance …
δ15N of core top sediments were strongly related to [NO3−] in surface waters. With distance …
Measurement of 223Ra and 224Ra in coastal waters using a delayed coincidence counter
We describe a nuclear detector system for measuring low activities of 223Ra and 224Ra in
natural waters based on an original design of Giffin et al.(1963). Samples are obtained by …
natural waters based on an original design of Giffin et al.(1963). Samples are obtained by …
Contribution of Southern Ocean surface-water stratification to low atmospheric CO2 concentrations during the last glacial period
R Francois, MA Altabet, EF Yu, DM Sigman, MP Bacon… - Nature, 1997 - nature.com
The nitrogen-isotope record preserved in Southern Ocean sediments, along with several
geochemical tracers for the settling fluxes of biogenic matter, reveals patterns of past nutrient …
geochemical tracers for the settling fluxes of biogenic matter, reveals patterns of past nutrient …
Atlantic meridional overturning circulation during the Last Glacial Maximum
The circulation of the deep Atlantic Ocean during the height of the last ice age appears to
have been quite different from today. We review observations implying that Atlantic …
have been quite different from today. We review observations implying that Atlantic …
Scavenged excess aluminum and its relationship to bulk titanium in biogenic sediment from the central equatorial Pacific Ocean
RW Murray, M Leinen - Geochimica et Cosmochimica Acta, 1996 - Elsevier
We present results from chemical analyses of Al and Ti in surface sediment sampled along
two cross-Equator latitudinal transects at 135W and 140W in the central equatorial Pacific …
two cross-Equator latitudinal transects at 135W and 140W in the central equatorial Pacific …
Increased biological productivity and export production in the glacial Southern Ocean
A range of complementary radionuclide proxies in sediments of the southernmost Atlantic
Ocean over the past 140,000 years indicate that glacial periods were characterized by …
Ocean over the past 140,000 years indicate that glacial periods were characterized by …
The δ15N of nitrate in the southern ocean: Consumption of nitrate in surface waters
We report nitrogen isotope data for nitrate from transects of hydrocast and surface samples
collected in the eastern Indian and Pacific sectors of the Southern Ocean, focusing here on …
collected in the eastern Indian and Pacific sectors of the Southern Ocean, focusing here on …
Similar rates of modern and last-glacial ocean thermohaline circulation inferred from radiochemical data
EF Yu, R Francois, MP Bacon - Nature, 1996 - nature.com
Today, the ocean thermohaline circulation transports half of the 231Pa produced by
radioactive decay in the Atlantic Ocean water column to the Southern Ocean. This export …
radioactive decay in the Atlantic Ocean water column to the Southern Ocean. This export …