CGRG Bibliography of Canadian Geomorphology
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Author : Ambler, D.C.
Date : 1974
Title : Runoff from a small arctic watershed
Publication : Permafrost Hydrology; Proceedings of Workshop Seminar; 1974, Calgary, Alberta (Canada), February 26-28, 1974. Environment Canada, Ottawa
Issue :
Page(s) : 26-28
Abstract
Hydrometric data collected from a small watershed on Northern Ellesmere Island in 1973 were presented. Climatically, the area experiences long cold winters for nine to ten months each year with temperatures recorded at -30c or less. During the short summer period of approximately three months, daily temperatures may rise to only 10-15c. The mean annual precipitation amounts to about 140 mm with about 50% of this precipitation occurring as rain between June and September. In early June prior to the start of runoff, a control was constructed in the stream cross-section. A 120 degree v-notch weir was fabricated on site. From the runoff hydrograph, the greatest volume of runoff can be seen to occur within 10 days of the beginning of runoff. The peak has two high points, the second one corresponding to a rainfall event of June 24th. The 1973 runoff was equivalent to a yield of 4.63 inches over the basin. The short response time of the basin emphasizes the requirement for continuous measurement. The daily mean discharges presented, when analyzed on an hourly basis, illustrate a marked diurnal variation. The basin was oriented in relation to the sun path to produce peak daily flows between 2400 hours and 0230 hours and minimum daily flows between 1200 hours and 1600 hours
Bibliography of Canadian Geomorphology