- Why did the concentration of atmospheric carbon dioxide rise so much and so quickly during last deglaciation?
During the Last Glacial Maximum, the deep southern Pacific waters were stratified, efficiently accumulating old, CO2 rich waters. Basak and co-authors measured neodymium isotopes in sediment cores that clearly show that...
-Surface South Pacific ecosystems reflect the availability of the nutrients iron, nitrate and phosphate
Thanks to a high resolution section across the South Pacific, Ellwood and co-workers identify that the gradient of sources and fates of the three nutrients iron, nitrogen, and phosphorus is explaining the observed ecosystem west-east gradient...
- Astonishing protactinium and thorium profiles in the Mediterranean Sea
In the framework of the GEOTRACES cruise along the GA04 section in the Meditterranean Sea, Gdaniec and co-workers, measured thorium and protactinium isotope distributions on eight profiles across the Mediterranean Sea. Contrasting with what is observed in the open ocean...
-Using ICPMS/MS to determine manganese, iron, nickel, copper, zinc, cadmium and lead concentrations on less than 40ml of seawater
Jackson and co-workers first did a classical offline preconcentration of small seawater aliquots using a SeaFast system. More innovative is the use of a state of the art inductively coupled plasma - tandem mass spectrometry (ICPMS/MS) to analyse the eluate...
- High production of methylmercury in the anoxic waters of the Black Sea
As part of the GEOTRACES MedBlack cruise, the research vessel Pelagia occupied 12 full-depth stations in the Black Sea along an East-West transect between July 13th and 25th, 2013. In the permanently anoxic waters of the Black Sea, a high fraction (up to 57%) of total mercury was found to be methylmercury...
-Basak, C., Fröllje, H., Lamy, F., Gersonde, R., Benz, V., Anderson, R. F., Molina-Kescher, M., Pahnke, K. (2018). Breakup of last glacial deep stratification in the South Pacific. Science, 359 (6378), 900–904. doi: 10.1126/science.aao2473
-Fischer, L., Smith, G., Hann, S., & Bruland, K. W. (2018). Ultra-trace analysis of silver and platinum in seawater by ICP-SFMS after off-line matrix separation and pre-concentration.Marine Chemistry, 199, 44–52. doi: 10.1016/J.MARCHEM.2018.01.006
- Ho, P., Lee, J.-M., Heller, M. I., Lam, P. J., & Shiller, A. M. (2018). The distribution of dissolved and particulate Mo and V along the U.S. GEOTRACES East Pacific Zonal Transect (GP16): The roles of oxides and biogenic particles in their distributions in the oxygen deficient zone and the hydrothermal plume. Marine Chemistry, 201, 242–255. doi: 10.1016/J.MARCHEM.2017.12.003
- Moffett, J. W., & German, C. R. (2018). The U.S.GEOTRACES Eastern Tropical Pacific Transect (GP16). Marine Chemistry, 201, 1–5. doi: 10.1016/J.MARCHEM.2017.12.001
- Ohnemus, D. C., Lam, P. J., & Twining, B. S. (2018). Optical observation of particles and responses to particle composition in the GEOTRACES GP16 section. Marine Chemistry, 201, 124–136. doi: 10.1016/J.MARCHEM.2017.09.004
- Samanta, S., & Dalai, T. K. (2018). Massive production of heavy metals in the Ganga (Hooghly) River estuary, India: Global importance of solute-particle interaction and enhanced metal fluxes to the oceans.Geochimica et Cosmochimica Acta, 228, 243–258. doi: 10.1016/J.GCA.2018.03.002
Banner 3D scene figure: 3D scene showing the distribution of dissolved iron in the Atlantic Ocean. Source: Schlitzer, R., eGEOTRACES - Electronic Atlas of GEOTRACES Sections and Animated 3D Scenes, http://www.egeotraces.org, 2017.