GEG 1301 Lecture Notes - Lecture 22: Psychological Trauma, Thermokarst, Coastal Erosion

• School: University of Ottawa
• Department: Geography
• Course: GEG 1301
• Professor: Prof Lekowski

Document Summary

Rapid mass movements slides- continued: debris slides. In 2005, a warm and sunny period in july/august generated high porewater pressures and the formation of 70+ new active layer detachments in three study areas. Mud ejection features caused by artesian pore water pressures (also described for the warm summer of 1988 by edlund. Features develop because water is released by melt of transient layer faster than the soil can consolidate. The soil in this condition is very weak. started in the tiny lobe (5/6 m long ), indicated by the first arrow. It still moved across an almost flat surface. Rapid mass movements falls: falls - vertical or near vertical movement of particles through the air. Rapid mass movements: complex movements - a mixture of any of the other types; many movements are complex and it may be difficult to sort out exactly what happened after the event.