Séminaire de Susanna Ebmeier

Observations of volcanic processes from satellite remote sensing:  degassing and deformation

My research investigates volcanic and magmatic processes by exploiting new opportunities for volcanology offered by global satellite remote sensing.  Satellite imagery is particularly exciting for volcanology, which is based on the forensic study of a relatively small number of recent eruptions and active volcanoes. Globally, uniformly acquired datasets allow the examination of questions of transferability in our understanding of volcanic systems  – where and when lessons from one volcano can reasonably be applied to another.  I will present two examples of how satellites datasets provide novel information about volcanological processes.  First, how satellite radar measurements allow regional comparisons of magma storage processes, illustrated by examples from Latin America, and how they can be compared in different tectonic and magmatic settings.  I will also introduce a strategy for testing the relationship between different volcanic deformation signals using Independent Component Analysis (ICA). The second example will describe measurements made of the decals impact of passive degassing on levels of aerosol, aerosol indirect effects and therefore albedo.