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Virtual Goldschmidt 2021
July 4 – July 9
Goldschmidt is the foremost annual, international conference on geochemistry and related subjects, organized by the Geochemical Society and the European Association of Geochemistry. Given the exceptional circumstances due to the current Covid-19 pandemic, the Goldschmidt2021 Conference will be an online meeting.
13a. Marine biogeochemistry: Particle fluxes and dissolved trace element cycling from source to sink
Adi Torfstein, Hebrew University of Jerusalem
Phoebe Lam, University of California, Santa Cruz
William B Homoky, University of Leeds
Erin Black, Lamont-Doherty Earth Observatory
Amber Annett, University of Southampton
Christopher T Hayes, University of Southern Mississippi
Claudia Benitez-Nelson, University of South Carolina
The compositions of seawater and marine particulate material, and their temporal and spatial fluxes and exchange, play a pivotal role in modulating the biological pump and atmospheric CO2 uptake, as well as various biogeochemical processes in the oceans. Determination of the inputs, settling fluxes, remineralization rates, chemical scavenging and the linkage of particles to seawater composition and marine productivity, are therefore critical for a full understanding of marine biogeochemical cycles and their impact on global climate.
Here we seek contributions on the following non-exclusive topics: (1) new methodologies for determination of trace element concentrations, isotopic compositions, or particle flux rates, (2) new approaches to characterize particle compositions, including across size classes, mineralogical phases or different environments, or (3) the interactions between particles and dissolved distributions. We encourage submissions of multi-disciplinary studies, such as GEOTRACES or other programs, including applications of radionuclides, experimental and analytical isotope geochemistry, modeling, and trace element partitioning between solid, colloidal and dissolved phases. We focus on studies that describe processes in the modern oceans but submissions discussing paleoceanographic conditions are welcome. We further seek studies that focus on the interplay between external sources (e.g., dust, rivers, margins), surface productivity and marine particulate and dissolved compositions and fluxes.