Seminar by Dylan Mikesell, Senior Researcher, Norwegian Geotechnical Institute (NGI).
A geophysical look at the recent surge of Sít’ Kusá (Turner Glacier), southeast Alaska
Abstract: The physical mechanisms that drive regular oscillations between modes of slow and fast flow for surge-type glaciers remains one of glaciology’s greatest unsolved mysteries. The activation of fast flow during the surge phase is attributed to a reduction in resistance at the glacier bed that allows accelerated basal motion. However, the relative importance of the wide variety of internal and external mechanisms that influence basal resistance remains unclear, in part due to the scarcity of detailed surge observations. We are using the recent surge(s) of Sít’ Kusá (Turner Glacier) in southeast Alaska to investigate controls on surge evolution. In this seminar I will provide an overview of the ongoing geophysical observations at Sít’ Kusá and present some of our preliminary results and interpretations regarding the subglacial hydrologic system.
The talk is digital (Zoom) but will be streamed in Aud 2, The Geology Building
Videolink to the lecture will be sent to the mailinglists alle@geo and geohyd-info@geo. If you want to subscribe to the geohyd-info@geo list send an email to Anita.
This lecture use Zoom | Download the Zoom Client for Meetings
About the seminar
This seminar is offered by the Section for Geography and Hydrology, Dept. of Geosciences, University of Oslo. The GEOHYD-seminars are announced as lunch seminars so bring your lunch if you want to.
The seminars are open for everyone interested, and especially students are welcome.
The Lunch Seminar Team
– Louise and Henning