January 1, 2018 at 5:45 pm

Geology Colloquium | From the Magma Chamber to the Atmosphere, Jan. 26

Dr. Patricia Nadeau, standing outside in a park

Dr. Patricia Nadeau

The Geological Sciences Colloquium Series presents Dr. Patricia Nadeau on “From the magma chamber to the atmosphere:  Tackling the role of volatiles in volcanism” on Jan. 26 at 2 p.m. in Clippinger 205.

Nadeau is a Visiting Assistant Professor of Geology at the Department of Geological Sciences at Ohio University.

Abstract: Gases dissolved in magmas are the driving force behind volcanic eruptions and their behavior can dictate the style and explosivity of such eruptions. Magmatic and volcanic gases are also frequently invoked as the source of a range of volcanogenic signals in geophysical measurements. Various means of studying volcanic volatiles and their relationship to other aspects of volcanic phenomena can offer clues about eruption mechanism, shallow rheological changes, and potential hazards. New, high-temporal resolution SO2 emission rate data at Fuego and Kilauea volcanoes reveal linkages between gas emissions, seismicity, and eruptive behavior. In-depth petrologic studies of Augustine volcano reveal a significant change in the nature of its volatiles over time, and the potential for a previously unrealized hazard. Multidisciplinary approaches to studying volcanoes, integrating many types of data, will be crucial in volcanologists’ future attempts to develop a comprehensive understanding of volcanic systems.

Upcoming Colloquia

Gaurav Sinha of Ohio University on “Making the Case for Ontology and Naive Geography in Digital Terrain Modeling” on Feb. 23 at 2 p.m. in Clippinger 205.

Dave Hunt of the Ohio Environmental Protection Agency on Mar. 2 at 2 p.m. in Clippinger 205.

Derek Sawyer of The Ohio State University on “Earthquakes and Submarine Landslides on Continental Margins” on Mar. 30 at 2 p.m. in Clippinger 205.

Tom Darrah of The Ohio State University on Apr. 13 at 2 p.m. in Clippinger 205.

James Lamsdell of West Virginia University on “Exploring environmental drivers of morphological change in horseshoe crabs and sea scorpions” Apr. 20 at 2 p.m. in Clippinger 205.


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