ABSTRACT: -Morphodynamics and climate variability responses of macrotidal beach-dune systems, Haida Gwaii (Queen Charlotte Islands), British Columbia.

CGRG Bibliography of Canadian Geomorphology
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Abstract

Macrotidal beach-dune systems that are exposed to extreme wind and wave climates are morphodynamically responsive to climate change and variability. These macrotidal systems are relatively understudied in the Canadian context and, on the West coast, their morphodynamics are responsive to extreme seasonal storms and known climate variability events (e.g., ENSO, PDO). This research examines and characterizes the morphodynamic regime of 2 geomorphically distinct macrotidal beach-dune systems in Gwaii Haanas National Park and Haida Heritage Reserve, British Columbia. Using regional wind data and Fryberger's sediment drift potential model we assess the potential for onshore sediment delivery via aeolian action. Using statistical analysis of annual mean and maximum water levels and climate variability indices, this study sheds new light on the response of macrotidal beaches in the NE Pacific to climate variability (e.g. increased storminess) and change (e.g. sea-level rise) impacts. This research has direct relevance for parks planning and management initiatives as well as for understanding one of Canada's most sensitive coasts to climate change and sea-level rise.

Bibliography of Canadian Geomorphology