[Eoas-seminar] Reminder TODAY - Fwd: EOAS Colloquium 1/13
eoas-seminar at lists.fsu.edu
eoas-seminar at lists.fsu.edu
Fri Jan 13 10:35:03 EST 2023
Dear EOAS,
The first EOAS Colloquium speaker will be TODAY Friday, 13 January 2023 at
3 pm in EOA 1050
Host: Angie Knapp - please email to meet with Dr. Conway
Dr. Tim Conway, USF
"New insights for oceanic iron biogeochemistry from iron isotopes: 10+
years of the GEOTRACES Program"
Abstract:
The micronutrient element iron plays a major role in setting the
patterns and distribution of primary production and carbon cycling
across the global oceans. As such, understanding the sources, sinks, and
internal cycling processes that drive the oceanic distribution of iron
is key to unlocking the role of iron in the global ocean and climate
system, whether today, in the geologic past, or in the 'anthropogenic'
future. In the last decade, stimulated largely by the International
GEOTRACES Program, dissolved iron isotope analyses of seawater (and source
materials) have emerged as a transformative tool for diagnosing iron
sources to the ocean, and tracking iron through the ocean. In this talk,
I will present an overview of the explosion of new oceanic dissolved
iron concentration and isotope data, as well as several case studies
that show how iron isotopes have revolutionized our understanding of
boundary sources such as atmospheric dust, underwater volcanoes and
vents, and marine sediments, and, remarkably, how they also show iron
can be carried thousands of kilometers through the ocean.
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