Seminar by Jukes Liu, Geo, Boise State University:
Down-glacier propagating speedups similar to a surge of Sít’ Kusá (Turner Glacier), southeast Alaska
Abstract:
Ice flow acceleration and related instabilities comprise a large portion of global glacier mass loss. Surging glaciers present an opportunity to study the initiation and propagation of flow instabilities on semi-regular intervals. This talk focuses on Sít’ Kusá (Turner Glacier) in southeast Alaska, which has the shortest known surge recurrence interval of ~8 years. I will present on the observed changes in motion of Sít’ Kusá throughout its most recent surge cycle from image analysis techniques and field observations. Annual speedups propagate down-glacier from the upper tributary of Sít’ Kusá and appear to be similar to the 2020-2021 surge. These observations challenge the established dichotomy between quiescent and active phases of surging glaciers.
The talk is in Aud 2 in the Geology Building. It is also possible to follow at Zoom.
Video link to the lecture will be sent to the mailing lists alle@geo and geohyd-info@geo. If you want to subscribe to the geohyd-info@geo list send an email to Anita.
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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 to everyone interested, and especially students are welcome.
The Lunch Seminar Team
–Olga and Ruitang