[Eoas-seminar] Dr. Lucas Seminar Mo Feb 2, 10:45am

[eoas-seminar at lists.fsu.edu]

I am pleased to announce a colloquium by:

Dr. Erica Lucas
University of Santa Cruz

On Monday February 2nd at 10:45 AM
Location EOAS 6042

Title:
Ice sheet stability across space and time from geophysical investigations of Antarctica

Abstract:
With the remote setting and near complete ice coverage, characterizing the geophysical setting of Antarctica remains a unique challenge. Over the last two decades, a surge in seismic and GPS station deployments have helped to advance our understanding of solid Earth structure in Antarctica. In this talk, I will discuss implications of recent regional-scale investigations of mantle structure for better understanding tectonics and solid Earth – ice sheet interactions in West Antarctica. Strong upper mantle heterogeneity in West Antarctica, consistent with a complex tectonic setting, is found to significantly impact predictions of glacial isostatic adjustment-induced bedrock deformation and local sea level change for modern (past ~100 years) and projected (next ~300 years) ice sheet changes. I will also present results revealing seismic evidence for widespread active magmatism in eastern Marie Byrd Land, a region of West Antarctica that coincides with multiple major glaciers undergoing rapid ice mass loss.




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