CGRG Bibliography of Canadian Geomorphology
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Author : Adamowsky, K.; Bocci, C.; Burn, D.H.; and Ouarda, T.
Date : 2001.
Title : Geostatistical regional trend detection in river flow data.
Publication : Annual Scientific Meeting of the Canadian Geophysical Union. May 14-17, 2001, University of Ottawa, Ottawa.
Issue :
Page(s) :
Abstract
Many studies have identified global warming and climate change as one of the biggest challenges facing Canada. In this paper, the regional temporal trend in river flows is investigated using a space-time model. While the primary focus is the time component, the spatial relationship among monitoring stations in the region is used to strengthen the estimation. Stations are grouped into ten non-overlapping homogeneous regions covering all of Canada. The developed linear model is composed of a random time trend as a function of space and a random error term as a function of both time and space. The estimate of regional time trend is a linear combination of observations that maximize the variance of estimated errors. Numerical analysis was performed on river flow data available from the Reference Hydrometric Basin Network (RHBN) established by Environment Canada, comprising 248 stations throughout Canada. It was found that a significant increasing trend exists for the month of July (Prairie, and Pacific regions), and December (Northwest Territories), and a decreasing trend for annual mean flow (central Canada).
Bibliography of Canadian Geomorphology