Sieber and his colleagues lift the veil on some of the mechanisms that control the behavior of zinc in the Pacific Ocean, and more globally.
May / 17 / 2023
Pacific Ocean
Disentangling what controls the cadmium distribution in the Pacific Ocean
Sieber and his colleagues established the distribution of dissolved cadmium concentrations and isotopes a section from Alaska to Tahiti.
May / 16 / 2023
Different fates of four poorly soluble trace elements in the Pacific Ocean
Zheng and co-authors present the full-depth distributions of aluminum, lead, manganese and copper in the western South Pacific.
Nov / 24 / 2022
The Tonga arc, an iron boundary in the South West Pacific Ocean
As part of the TONGA GEOTRACES process study, Tilliette and colleagues identified high dissolved iron concentrations in the west of the Tonga arc.
Aug / 31 / 2022
Dominance of the benthic flux of rare earth elements on continental shelves
Deng and his colleagues focus on one of the largest land–ocean interfaces in Asia, the Changjiang River–East China Sea system.
Aug / 30 / 2022
High resolution of dissolved and particulate barium distributions in the Atlantic and Pacific Ocean reveal the importance of the margin sources on the oceanic barium budget
Rahman and co-workers performed intensive samplings and analyses of barium along the GEOTRACES GA03 and GP16 transects.
Jul / 06 / 2022
High resolution of dissolved and particulate barium distributions in the Atlantic and Pacific Ocean reveal the importance of the margin sources on the oceanic Ba budget
Rahman and co-workers performed intensive samplings and analyses of barium along the GEOTRACES GA03 and GP16 transects.
Distributions, boundary inputs, and scavenging processes of trace metals in the East Sea (Japan Sea)
Seo and his colleagues show pronounced atmospheric and shelf inputs of trace elements in the Japan Sea.
Jun / 14 / 2022
New trace metal data in the Seas of Japan and Okhotsk
Nakaguchi and colleagues realized full-depth and section distributions of traces metals collected from the Seas of Japan and Okhotsk.
May / 24 / 2022
A better insight into parameters that control particle flux in the ocean
Xiang and co-workers compiled full ocean-depth size-fractionated particle data from three recent U.S. GEOTRACES cruises.
May / 10 / 2022
From Alaska to Tahiti, the distribution and bulk deposition fluxes of trace elements
A suite of trace element was measured in aerosols collected in the North and equatorial Pacific.
Mar / 17 / 2022
Anthropogenic aerosol has become a dominant source of zinc in the deep water of the Northern South China Sea
Liao and colleagues determined zinc concentrations and isotope compositions in sinking particles collected in the Northern South China Sea…
Nov / 24 / 2021
An updated global ocean chromium biogeochemical cycle
Janssen and co-authors present an exhaustive compilation of ocean chromium data…
Scavenging differentiates the distribution of cadmium, nickel, zinc and copper in the North Pacific Ocean
Zheng and co-authors observed sectional distributions of cadmium, nickel, zinc, and copper in the North Pacific Ocean during three GEOTRACES related cruises…
Jul / 19 / 2021
First direct measurements of luxury iron uptake in natural phytoplankton communities: surprising results!
This study demonstrates the importance of biology and ecology to understanding iron biogeochemistry.
Mar / 19 / 2021
Uranium-238 data and physical transports off the Peruvian coast are questioning the thorium-uranium export model
Authors determined insignificant advective and diffusive thorium-234 fluxes at 25 stations in the Peruvian oxygen minimum zone
Dec / 04 / 2020
Surface water trace element and isotope data challenge dust flux models
Using measurements of dissolved and particulate thorium-230 and thorium-232 along a section across the South Pacific, authors estimated the dust flux over this remote area
Nov / 05 / 2020
The power of combining geochemical tracer data with direct current measurements
Learn about new discoveries done combining seawater Rare Earth Elements concentrations and direct physical oceanographic observations
Oct / 14 / 2020
A new model simulates the speciation and dispersion of hydrothermal iron
Roshan and collaborators present new observations of dissolved iron and its physical speciation in the South Pacific
Jun / 10 / 2020
Mechanisms driving biological CO2 drawdown in the Subarctic Pacific unraveled
Nishioka and co-authors compiled comprehensive data sets of iron and macronutrients covering the whole subarctic Pacific…
Jun / 04 / 2020
Loihi Seamount, hydrothermal Helium-3 and dissolved iron sources and their dispersion within the Pacific Ocean
As part of the GEOTRACES cruise GP15, Jenkins and co-workers (2020, see reference below) observed large water column anomalies in helium isotopes and trace metal concentrations above the Loihi Seamount […]
May / 04 / 2020
Oceanic Margins as sources of lithogenic particulate and dissolved iron in the North Pacific Ocean
Three GEOTRACES Japanese cruises on board the R/V Hakuho Maru allowed establishing basin-scale and full-depth sectional distributions of total dissolvable iron (tdFe), dissolved iron (dFe), and labile particulate iron (lpFe=tdFe […]
Mar / 10 / 2020
Rare Earth distribution and pattern anomalies in the Solomon Sea
The Solomon Sea is surrounded by high and intensively weathered islands. Its complex topography and hydrography make this area a potential source of trace elements to the waters flowing through […]
Dec / 16 / 2019
South Pacific particulate organic carbon fate challenges Martin’s Law
Joint Science Highlight with US-Ocean Carbon & Biogeochemistry (OCB). Carbon storage in the ocean is sensitive to the depths at which particulate organic carbon (POC) is respired back to CO2 […]
May / 16 / 2019
About the decoupled fates of aluminium, manganese, cobalt and lead in the North Pacific Ocean
Did you know that each of these tracers could follow its own marine story, quite decoupled from the others?
Apr / 24 / 2019
All the bioactive elements are not affected by the land-ocean gradient of the atmospheric deposition along the Eastern Pacific Zonal Transect
Atmospheric dust is considered an important source of trace elements to the ocean. As part of the Eastern Pacific Zonal Transect GEOTRACES cruise (EPZT GP16), Buck and co-workers collected 17 […]
Feb / 13 / 2019
Using the three thorium isotope toolbox to probe the particle dynamic within an East Pacific Rise hydrothermal plume
The insoluble radiogenic isotopes of thorium (Th) are produced at a known rate in the water column via the decay of soluble uranium (234Th, 230Th) and radium (228Th) isotopes. These […]
Feb / 07 / 2019
Cadmium to phosphorus ratio in euphotic zone particulates: why does it vary?
Bourne and co-workers examine the particulate cadmium to phosphorus ratio (Cd/P) variations of 3 particle fractions (<1µm, 1-51µm and >51µm) from 50 casts covering spatial and temporal scales never reached so far […]
Nov / 01 / 2018
Contrasting fates of the cadmium-cadmium isotopes in the Kuroshio and Oyashio environmental systems
Yang et al. (2018, see reference below) studied the relative importance of physical and biogeochemical processes on controlling the isotopic composition of dissolved and particulate cadmium (Cd) in a GP18 […]
Jul / 18 / 2018
When hydrothermal iron fertilizes the surface ocean in the Western Tropical South Pacific Ocean
For the first time, iron measurements in the Western Tropical South Pacific reveal that shallow hydrothermal inputs from the Tonga Arc region fertilize the euphotic waters of this vast region. […]
Jun / 18 / 2018