A global compilation of the neodymium isotopic composition of seawater for GEOTRACES

GEOTRACES will allow the collection of numerous data that will be archived in the GEOTRACES Data Assembly Centre (GDAC), and will eventually contribute to create a world atlas of tracers in the ocean. However, data acquired on GEOTRACES core parameters in the framework of past cruises could also be considered in this gathering. With this aim, François Lacan and co-authors (Lacan at al, 2012) propose a commented compilation of the neodymium (Nd) isotope and concentration data published before September 1st, 2011. A very interesting tool for modellers and any other scientist following works on this tracer!

Lacan_2012

Figure: εNd averaged between the surface and 400 m depth. Figure made with Ocean Data View (Schlitzer, 2009).
Source: Author manuscript, definitive and authenticated version published in “Chemical Geology 300-301 (2012) 177-184″

 

References:

Lacan F., Tachikawa K., Jeandel C. (2012) Neodymium isotopic composition of the oceans: A compilation of seawater data Chemical Geology, Volume: 300-301 DOI : 10.1016/j.chemgeo.2012.01.019. Click here to acces the author’s manuscript.

Schlitzer R. (2009) Ocean data view, http://odv.awi.de

Latest highlights

Mercury content and isotopes in bird’s guano: a window to reconstruct past climates

By analysing peat cores, Chuxian Li and her colleagues have shown how populations of nesting seabirds have fluctuated on a sub-Antarctic Island over the last 8,000 years.

Contraction of North Atlantic Deep Water during glacial times: a paradigm called into question

Blaser and co-authors propose a new distribution of deep-water masses in the Atlantic Ocean during the Last Glacial Maximum and the Heinrich Stadial..

Authigenic radiogenic neodymium isotope composition traces millennial-scale overturning circulation variability in the Arabian Sea

The neodymium isotopic signature of the sediment authigenic fraction is, a priori, a valuable proxy for reconstructing deep-water mass trajectories…

Magmatic activity at the Carlsberg Ridge in the Indian Ocean triggered by glacial sea-level variation

De and colleagues provide a high-resolution record of magmatic input and associated hydrothermal activity over the past 49 kyr from a core recovered from a magmatic segment of the slow-spreading Carlsberg Ridge in the Indian Ocean.

Rechercher