GEOB 103 Lecture Notes - Lecture 12: Geomorphology, Toposcope, Periglaciation

• School: UBC
• Department: Geographical Sciences
• Course: GEOB 103
• Professor: Shawn Chartrand

Document Summary

Ice masses + glaciers are important geomorphic processes, they are also associated with physical effects. Periglacial landscapes: shaped by cycles of freezing and thawing, small changes in periglacial landscapes would lead to massive changes (i. e. rapid landscape changes) --> they are low temperature but not glaciated (so not completely frozen) Cool and local landscape scales occur within periglacial landscapes. Glaciers are powerful geomorphic agents and commonly interact with. Alpine glaciers: constraint by the topographic landscape, they are typically bordered by moraines and are confined by these valley walls typically bordered by moraines and are confined by these valley walls. May flow out of mountains and onto lower gradient where they are no longer constrained by valley walls. Ice fields: occupy highlands and as a process, buries the existing topography, they are also drained by outlet glaciers that transport ice to lower elevations where it eventually melts and deposits moraines.