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Hydrothermal Vents & MegaplumesPresented by Dr. Jessica Fitzsimmons and Dr. Brandy Toner - Thursday, May 12, 2015
The GEOTRACES webinar series concluded with a discussion of the influence of hydrothermal vents – and the megaplumes that they create -- on levels of trace metals in the ocean. At mid-ocean ridges, heat, seawater, and ocean crust combine to create vent fluids, which are typically rich in trace metals such as iron. Hydrothermal plumes can impact ocean chemistry thousands of kilometers from their sources. In some key areas of the ocean, these far-flung sources of iron may affect ocean productivity and, eventually, climate.
As with the other research shared during the GEOTRACES webinar series, collecting hydrothermal vent-borne measurements requires a high level of international coordination and collaboration. Please continue to follow research of the GEOTRACES team as they seek to unravel the mysteries of biogeochemical cycles and large-scale distribution of trace metals in the ocean environment.
You can watch the archived video of the webinar below. Below the video are the concept maps that were presented, so that you can follow along with the video.
Click here (PDF, 77 KB) for a transcript of the Q&A portion of this video.
This webinar contained two concept maps. To view any map in full screen, click on the blue wrench and select Open Full Map Viewer. Click on the concepts to access additional resources embedded in the map. To save this map to your CLIMB account, click the blue wrench in the upper left corner and select Copy Map to My Maps.
How are Hydrothermal Vent Fluids Created and How Do They Move Through the Ocean?
Brandy's concept map illustrates the mechanics of how hydrothermal vents are created, and the evolution of hydrothermal “plumes” as they move through the water.
How Do Hydrothermal Vents Affect the Ocean's Iron Composition?
Jessica's concept map explains how hydrothermal vent plumes can carry the many forms of iron through the ocean. The map includes evidence for the possible long-distance travel of dissolved iron as well as its potential impact on productivity and climate.
Jessica Fitzsimmons is an Assistant Professor at Texas A&M University. She received a Ph.D. in chemical oceanography from MIT/Woods Hole Oceanographic InstitutionI and a B.A. in Chemistry from Boston University. The Fitzsimmons Lab studies the distribution, physicochemical state, and isotope ratios of trace metals in seawater in order to better understand the cycles and biological usage of metals in the water column.
Brandy Toner is an Associate Professor in the Department of Soil, Water, and Climate at the University of Minnesota. She holds a Ph.D. in Environmental Science and Policy Management and an M.S. in Civil and Environmental Engineering, both from the University of California, Berkeley. Her research addresses chemical and biological processes that result in the cycling of metals in the environment.