Variability and extreme of Mackenzie River daily discharge during 1973–2011

Yang, D., Shi, X. and Marsh, P. (2015) Variability and extreme of Mackenzie River daily discharge during 1973–2011. Quaternary International, 380-81, pp. 159-168. (doi: 10.1016/j.quaint.2014.09.023)

Abstract

This study systematically analyzes long-term (1973–2011) daily flow data collected near the Mackenzie basin outlet. It clearly defines the variability, extreme events, and changes in daily flow records over the past 4 decades. The results of this study accurately determine the seasonal cycle of river discharge, including the range of highest and lowest daily flows. The interannual variation of daily flow is generally small in the cold season, highest in the spring melt period, and large over the summer months mainly due to rainfall storm activities and associated floods. This study also shows that Mackenzie River flow regime has changed over the past 4 decades due to climate variation, with the advance of snowmelt peak timing by several days, decrease in maximum spring flows by about 3000 m3/s, and weak rise of cold season base flows. These results are the consequence of hydrological response to regional climate warming, and they provide new knowledge to improve our understanding of large-scale environmental changes over the broader northern regions.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Shi, Dr John Xiaogang
• Authors: Yang, D., Shi, X., and Marsh, P.
• College/School: College of Social Sciences > School of Social & Environmental Sustainability
• Journal Name: Quaternary International
• Publisher: Elsevier
• ISSN: 1040-6182
• ISSN (Online): 1873-4553
• Published Online: 25 October 2014
• Copyright Holders: Copyright © 2014 Elsevier Ltd and INQUA
• First Published: First published in Quaternary International 380-381:159-168
• Publisher Policy: Reproduced under a Creative Commons License