CGRG Bibliography of Canadian Geomorphology
Search Results
Author : Cunderlik, J.M.; and Burn, D.H.
Date : 2002.
Title : Regional trends in monthly maximum flows and climatic linkages in the South BC Climate Region.
Publication : Annual Meeting of the Canadian Geophysical Union. May 18-21, 2002, Banff, Alberta.
Issue :
Page(s) :
Abstract
The potential impact of climate change on the hydrologic regime is a crucial question in contemporary hydrology. A number of studies have been conducted on the identification of climate change signals in annual maximum flood records. So far, however, less attention has been paid to changes in the regime of flood events at a monthly time scale. This study explores regional trends in monthly maximum flow records and their linkages to trends in selected climatic variables in a hydro-climatologically homogeneous region. Trends are identified using the Mann-Kendall nonparametric test with a modification for auto-correlated data. The regional significance of trends identified at the local scale is evaluated by means of a regional bootstrap algorithm that preserves the regional cross-correlation structure. Linkages between trends in hydro-climatic records are explored by means of cross-correlation and cross-spectral analyses. The main changes in regional trends are illustrated using the Lowess smoothing technique. The results show significant changes in the intra-annual flood regime in the South BC climate region. A regionally strongly significant increase in spring maximum flows is highly linked to a significant increase in spring temperatures. An autumn decrease in flows is linked to changes in autumn maximum precipitation records.
Bibliography of Canadian Geomorphology