Systematic Unequal Dissection of Opposing Valley Sides

• Published in: Journal of Glaciology
• Main Authors: Liebling, Richard S., Scherp, Horst S.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 1983
• Subjects: Earth-Surface Processes; Yukon; Canada; Ogilvie; Ogilvie Mountains; Nahoni Range; Journal of Glaciology
• Online Access: http://dx.doi.org/10.1017/s0022143000030434; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000030434

Abstract In the Nahoni Range of the northern Ogilvie Mountains, Yukon Territory, Canada, dissection channels are most markedly developed on valley sides facing the north and north-east. The extent of slope channelling is controlled by intensity of insolation and its influence on persistence of snow and ice. Upon the cooler north- and north-east-facing slopes, snow and ice remain well into midsummer; melt water is released over a long period and its discharge is restricted to narrow rivulets. In contrast, snow and ice on the warmer west- and south-facing slopes melt rapidly during the late spring months. The scree on these valley sides moves down-slope as a more or less uniform mass of water-saturated detritus.