Beaded streams: A case study in the Blackstone Uplands, Yukon Canada.

• Main Authors: Ciric, Emma, Roy-Léveillée, Pascale
• Format: Still Image
• Language: unknown
• Published: figshare 2018
• Subjects: Physical Geography; Environmental Science; 40601 Geomorphology and Regolith and Landscape Evolution; FOS Earth and related environmental sciences; Arctic; Canada; Yukon; Ice; permafrost; Thermokarst; Tundra; wedge*
• Online Access: https://dx.doi.org/10.6084/m9.figshare.5786793.v1; https://figshare.com/articles/Beaded_streams_A_case_study_in_the_Blackstone_Uplands_Yukon_Canada_/5786793/1

Ciric, E , Roy-Leveillee, P (2017) Beaded Streams: A case study in the Blackstone Uplands, Yukon, Canada. Canadian Association of Geographers 2017: Towards a Just and Sustainable World, May 29-June2, 2017, Toronto, ON. Abstract:Beaded streams are a type of thermokarst expression resulting from ice wedge degradation found on gentlysloping terrain. They have been studied in Arctic ecosystems underlain by continuous permafrost. This researchexamined beaded streams in the Blackstone Uplands (YT), a sub-arctic tundra landscape of the discontinuouspermafrost zone. Analysis of beaded streams on satellite imagery and aerial photography taken in the 1950sindicated that beaded stream development is closely linked to the degradation of ice wedge polygon networks,and results in can result in pronounced changes in vegetation cover as beaded streams mature. In July 2016, abeaded stream from this study area was visited in the field to determine its depth as well as physical observations.