Keywords
measurements
tide gauges
West Coast of North America
How to Cite
Abstract
We show here the presence of significant “coldspot” of sea level rise along the West Coast of the United States and Canada (including Alaska). The 30-years sea level for the area are mostly falling also at subsiding locations as San Francisco and Seattle where subsidence is responsible for a long term positive rate of rise. The 20 long term tide gauges of the area of length exceeding the 60-years length have a naïve average rate of rise –0.729 mm/year in the update 30-Apr-2015, down from –0.624 mm/year in the update 14-Feb-2014. Therefore, along the West Coast of the United States
and Canada the sea levels are on average falling, and becoming more and more negative.
References
Chambers D.P., Merrifield M.A., Nerem R.S., 2012. Is there a 60-year oscillation in global mean sea level? Geophysical Research Letters 39(17), art. no. L18607.
Mörner N.A., 2015. Glacial Isostasy: Regional – Not Global. International Journal of Geosciences 6: 577–592.
NOAA, 2015. Sea Level Trends U.S. Stations (tidesandcurrents.noaa.gov/sltrends/mslUSTrendsTable.htm; accessed: 1 July 2015).
Parker A., 2013a. Oscillations of sea level rise along the Atlantic coast of North America north of Cape Hatteras. Natural Hazards 65(1): 991–997.
Parker A., 2013b. Sea level trends at locations of the United States with more than 100 years of recording. Natural Hazards 65(1): 1011–1021.
Parker A., 2014. Minimum 60 years of recording are needed to compute the sea level rate of rise in the Western South Pacific. Nonlinear Engineering 3(1): 1–10.
Parker A., Ollier C., 2015. Discussion of A modelling study of coastal inundation induced by storm surge, sea-level rise, and subsidence in the Gulf of Mexico: the US average tide gauge is not accelerating consistently with the worldwide average. Physical Science International Journal 7(1): 49–54.
Parker A., Saad Saleem M., Lawson M., 2013. Sea-Level Trend Analysis for Coastal Management, Ocean and Coastal Management. Ocean & Coastal Management 73: 63–81.
PSMSL, 2015. Relative Sea Level Trends (www.psmsl.org/products/trends; accessed: 1 July 2015).
Sallenger A.H., Doran K.S., Howd P.A., 2012. Hotspot of accelerated sea-level rise on the Atlantic coast of North America. Nature Climate Change 2: 884–888.
Schlesinger M.E., Ramankutty N., 1994. An oscillation in the global climate system of period 65–70 years. Nature 367 (6465): 723–726.
License
© Faculty of Geographical and Geological Sciences, Adam Mickiewicz UniversityThis work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.