Developing winter flow rating relationships using slope‐area hydraulics

River Research and Applications - Tập 27 Số 9 - Trang 1076-1089 - 2011
Spyros Beltaos1
1National Water Research Institute, Environment Canada, Burlington, ON L7R 4A6, Canada

Tóm tắt

AbstractDespite recent advances in instrumentation and modelling methods, accurate determination of river discharge under an ice cover still requires direct measurement. Published flows at hydrometric gauging stations are based on interpolation between a few measurements that are carried out during each winter. The feasibility of using slope‐area hydraulics to develop discharge‐stage rating relationships is explored at two stations, Peace River at Peace Point and Mackenzie River at Arctic Red River. Records at both gauges contain key information for understanding local ice jamming processes, which are known to control the long‐term maintenance of the aquatic ecosystems in the respective deltas. For each site, the variations of reach‐average hydraulic parameters with stage are first determined from several nearby cross‐sections. This information is then used to calculate hydraulic resistance characteristics during the ice season based on archived discharge measurement data, which also include ice cover thickness. The Peace River flow measurements indicate a well‐defined seasonal variation in hydraulic resistance, with the exception of years with large slush deposits under the solid‐ice sheet. Slush effects are negligible at the Mackenzie River gauge site, but the stage‐flow relationship is complicated by a variable water surface slope, a result of downstream control by the Beaufort Sea. This feature is most pronounced during the pre‐breakup period when flows are rising sharply and renders flow estimation uncertain. A nearby water‐level gauge would help quantify the slope and increase confidence in winter flow estimates. Copyright © 2010 in the right of Canada.

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Tài liệu tham khảo

Ashton GD, 1986, River and Lake Ice Engineering

Ashton GD, 1972, Ripples on underside of river ice covers, Journal Hydraulics Division ASCE, 98, 1603, 10.1061/JYCEAJ.0003407

AshtonGD ZufeltJ.1991.Evolution of ice cover roughness.Proceedings of the 6th International specialty conference on Cold Regions Engineering (ASCE) ed. by D.S. Sodhi West Lebanon N.H. U.S.A. 294–305.

BeltaosS.1982.Notes on ice hydraulics summary of lecture notes presented at IWD training seminar “Hydraulics of Ice Covered Rivers and Ice Jam Analysis” NWRI Report Burlington Canada.

10.1061/(ASCE)0733-9429(2001)127:8(650)

10.1016/j.coldregions.2008.11.002

10.1002/hyp.6417

CareyKL.1966.Observed configuration and computed roughness of the underside of river ice St. Crois River Wisconsin. U.S. Geological Survey Prof. Paper 550‐B B192–B198.

CareyKL.1967a. Analytical approaches to computation of discharge of an ice‐covered stream.Geological Survey Prof. Paper 575‐C C200‐C207.

CareyKL.1967b.The underside of river ice St. Crois River Wisconsin.U.S. Geological Survey Prof. Paper 575‐C C195‐B199.

Davar KS, 1996, A Primer on Hydraulics of River Ice

DornanL.2005.Development of Site Specific Ice Growth Models for Hydrometric Purposes. Proceedings CD 13th Workshop on the Hydraulics of Ice Covered Rivers Hanover NH September15–16 2005 Paper No. 7 (31 p; no page numbers) CGU HS Committee on River Ice Processes and the Environment Edmonton Canada.

Henderson FM, 1966, Open channel flow

10.1139/l02-031

KellerhalsR NeillCR BrayDI.1972.Hydraulic and geomorphic characteristics of rivers in Alberta. River Engineering and Surface Hydrology Report 72‐1 Research Council of Alberta Edmonton Canada 52 p.

KhannaVK WildeDJ JasperJN.2001.Predicting the Extent of Flooding due to Storm Surges Climate Change and Spring Floods on the Mackenzie Delta. Paper presented at Ottawa Canadian Geophysical Union Annual Meeting June 11 p.

Larsen PA, 1969, Head losses caused by an ice cover on open channels, Journal Boston Society Civil Engineers, 56, 45

10.1139/l82-008

10.14430/arctic1638

MarshP LesackL RobertsA.1993.The environmental effects of ice jam flooding on lakes in the Mackenzie Delta. Proc. Workshop on Environmental Aspects of River Ice Saskatoon Canada (NHRI Symposium no. 12 ed. by T.D. Prowse) 359–381.

MelcherNB WalkerJF.1992.Evaluation of selected methods for determining streamflow during periods of ice effect. US Geological Survey Water Supply paper 2378 Denver CO U.S.A. 47 p.

Morse B, 2003, Characteristics of ice in the St. Lawrence River, Canadian Journal of Civil Engineering, 30, 766, 10.1139/l03-030

MorseB HamaiK ChoquetteY.2005.River discharge measurement using the velocity index method. Proceedings CD 13th Workshop on the Hydraulics of Ice Covered Rivers Hanover NH September15–16 2005 Paper No. 11 (26 p; no page numbers) CGU HS Committee on River Ice Processes and the Environment Edmonton Canada.

Nezhikhovskiy RA, 1964, Coefficients of roughness of bottom surface on slush‐ice cover. Soviet Hydrology, Washington, Am, Geoph. Union, 127

ParkinsonFE HolderGK.1982.Liard‐Mackenzie winter regime study final report. Prepared for British Columbia Hydro and Power Authority. LHL‐830. Lasalle Hydraulic Laboratory Ltd. Montreal Canada.

10.2166/nh.1990.0023

RosenbergHB PentlandRL.1983.Accuracy of winter streamflow records Inland Waters Directorate Direction générale des eaux intérieures Ottawa Canada (reprinted from the Proceedings of the 43rd Eastern Snow Conference 1966 Hartford U.S.A. 51–72).

10.1016/j.jhydrol.2005.10.037