CGRG Bibliography of Canadian Geomorphology
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Author : Craymer, M.R.; Henton, J.A.; and Piraszewski, M.
Date : 2006.
Title : Sea level change and vertical crustal motion in the Canadian Arctic based on GPS and tide gauges: Challenges and preliminary results.
Publication : Eos Transactions. AGU,
Issue : 87(52), Fall Meeting Supplement,
Page(s) : Abstract G23B-1288.
Abstract
A network of several continuous GPS stations co-located with tide gauges has been established in the Canadian Arctic with the aim of directly measuring changes in absolute sea level. The tide gauge data provide measurements of relative sea level with respect to the crust upon which the tide gauge is anchored. The GPS data enable us to determine the absolute vertical velocity of the crust at each tide gauge with respect to a global reference frame. Combining the two allows us to determine absolute changes in Arctic sea level with respect to the global frame. Several factors affect our ability to obtain reliable estimates from these measurements, including monumentation, various kinds of noise and systematic biases, equipment type and changes, and, most importantly, the length of the time series. Each of these factors will be discussed in relation to our experiences from the past several years. Although based only on three to five years of data, we provide some preliminary results of crustal motion and sea level change and compare these to estimates reported by others. We also estimate the level of accuracy we might expect with longer time series and discuss proposals for expanding this network in the near future.
Bibliography of Canadian Geomorphology