Seminar by Kaytan Kelkar (University of Alaska Fairbanks, USA) :
A Rock Glacier Inventory of the Central Alaska Range and A Very-Low Frequency Survey of the Rainbow Ridge Rock Glacier, Alaska
Abstract: Rock glaciers are debris landforms consisting of a perennially frozen ice/rock matrix that gradually move downslope on permafrost affected slopes. These features offer valuable insights as geomorphological indicators of mountain permafrost conditions. Here we present a geomorphological rock glacier inventory of the Central Alaska Range, an area of discontinuous permafrost in the Subarctic. We build upon initial efforts by Wahrhaftig and Cox (1959) to explore the influence of slope, aspect, elevation, permafrost distribution, and geology exert over rock glacier location, morphology, and signs of movement. We manually mapped over 628 rock glaciers using medium-to-high resolution spectral satellite imagery in ArcGIS Pro. Results from these studies will provide critical baseline data on rock glacier extent, future dynamics, and morphometry in the Central Alaska Range. Such data is a valuable resource to infer mountain permafrost distribution and predict potential permafrost-affected geohazards in high-mountain Alaska
The talk is in Aud 1 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 (GeoHyd), Dept. of Geosciences, University of Oslo. The 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
– Yeliz and Thomas