Horner and co-authors assess whether nine bioactive trace metals and their isotopes can be used as paleo-productivity proxies.
Jun / 30 / 2021
Barium
Coupling and decoupling of barium and radium-226 along the GEOVIDE GEOTRACES section
Because radium-226 (226Ra) and barium (Ba) are both alkaline earth metals and thus display similar chemical behaviours, studying their fate in contrasting environments is of prime interest. With this aim, […]
Sep / 04 / 2018
High mesopelagic carbon remineralization traced by particulate biogenic barium in the North Atlantic Ocean
The high resolution section of particulate “excess Ba” (Baxs) measured by Lemaitre and co-authors (2018, see reference below) along the GEOVIDE GA1 section (R/V Pourquoi Pas? spring 2014) confirmed the […]
May / 28 / 2018
Barium isotope measurements help constraining the oceanic barium cycle
Hsieh and Henderson (2017, see reference below) propose a compilation of the oceanic barium (Ba) concentrations together with its isotopic profiles measured so far. Their review covers the main oceanic […]
Oct / 19 / 2017
Solute-particle interactions and the enhanced dissolved barium flux from the Ganga River estuary
Dissolved and particulate barium (Ba) were investigated in samples that were collected in six periods of contrasting water discharge over two years (2012 and 2013) by Saumik and Dalai (2016, […]
Nov / 16 / 2016
New insights into global barium cycling from the first barium isotope data for seawater
A new method developed by Horner and co-workers (2015, see reference below) allows for the determination of dissolved barium (Ba) isotopic compositions in seawater using nanogram quantities of Ba. The […]
Nov / 16 / 2015
Tracking the Indian Ocean source of barium
Intermediate waters of the Bay of Bengal can be a significant source of dissolved barium (Ba) to the Indian Ocean. This is the conlusion of an extensive study of the […]
Sep / 05 / 2013
Results from the GEOTRACES cruise section GIPY11
An interesting comparison of data of dissolved barium (Ba) and data of dissolved aluminium (Al) and silicate (Si) collected onboard the GEOTRACES cruise GIPY11 (ARK-XXII/2 Polarstern expedition) is presented in […]
Jul / 04 / 2012