[CCoE Notice] Friday Oct. 11th Seminar: Prof. Helge Gonnermann (Rice U)

[Knudsen, Rachel W]

Dear colleagues and students,
Please join us this Friday as CTFM welcomes Prof. Helge Gonnermann from the nearby university of Rice.

" From birth to death - bubbles during volcanic eruptions "

Helge Gonnermann

Associate Professor, Department of Earth Science, Rice University
Date: Friday, October 11th, 2019
Time: 1:00-2:00 PM
Location: Room 102D  in Engineering Building 1

Abstract: Volcanic eruptions are driven by abundant magmatic volatiles, such as water, that become supersaturated in the magma and nucleate a myriad of bubbles upon ascent to the surface. Bubbles in the erupted magmas also provide records of subsurface conditions that are inaccessible to direct observations during volcanic eruptions. I will provide an overview of the role of bubbles during volcanic eruptions of silica rich magmas. These are magmas with viscosities that range from ~104 Pa.s at depth to >108 Pa.s near the surface and which produce eruptions that range from the most explosive eruptions on Earth to continuous lava effusion over periods of months or years. I will discuss the roles and unsolved problems associated with the 'birth' and 'death' of bubbles. The former is bubble nucleation, whereas the latter encompasses bubble coalescence and the loss of volatiles by permeable flow, as well as magma fragmentation during explosive eruptions.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://Bug.EGR.UH.EDU/pipermail/engi-dist/attachments/20191009/d0f3d166/attachment-0001.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: CTFM_Helge_Gonnermann_Oct_11_2019.pdf
Type: application/pdf
Size: 626917 bytes
Desc: CTFM_Helge_Gonnermann_Oct_11_2019.pdf
Url : http://Bug.EGR.UH.EDU/pipermail/engi-dist/attachments/20191009/d0f3d166/attachment-0001.pdf