The Nonlinear Pattern of Sea Levels: A Case Study of North America
Here I analyze the relative sea level signals from the tide gauges of North America. Linear and parabolic fittings are used to compute relative rates of rise and accelerations. There are 20 long-term-trend (LTT) tide gauges along the (Pacific) West Coast of North America. The average relative rate of rise is −0.38 mm/year, and the average acceleration is +0.0012 mm/year2. There are 33 LTT tide gauges of the (Atlantic) East Coast of North America. The average relative sea level rise is 2.22 mm/year, and the average acceleration is +0.0027 mm/year2.
KeywordsTide gauges GPS Sea levels Subsidence North America
The author received no funding and declares no competing interests.
- 3.Galloway, D. L., Jones, D. R. & Ingebritsen, S. E. (1999). Land subsidence in the United States (Vol. 1182). United States Geological Survey. Retrieved from https://pubs.usgs.gov/circ/circ1182/.
- 4.Galloway, D. L., Bawden, G. W., Leake, S. A., & Honegger D. G. (2008). Land subsidence hazards. In R. L. Baum, D. L. Galloway, & E. L. Harp (Eds.), Landslide and land subsidence hazards to pipelines (chapter 2). U.S. Geological Survey Open-File Report 2008-1164. Retrieved from http://pubs.usgs.gov/of/2008/1164/.
- 5.National Research Council. (1991). Mitigating losses from land subsidence in the United States (58p). Washington, DC: National Academy Press.Google Scholar
- 9.United States Geological Survey. (2000). Land subsidence in the United States. United States Geological Survey Fact Sheet-087-00. Retrieved from https://water.usgs.gov/ogw/gwrp/fs2001/test1/.