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Is the intensifying wave climate of the U.S. Pacific Northwest increasing flooding and erosion risk faster than sea level rise?

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https://ir.library.oregonstate.edu/concern/articles/jd472z058

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Abstract
  • The relative contributions of sea level rise (SLR) and increasing extra-tropical storminess to the frequency with which waves attack coastal features is assessed with a simple total water level (TWL) model. For the coast of the U.S. Pacific Northwest (PNW) over the period of wave-buoy observations (~30 years) wave height (and period) increases have had a more significant role in the increased frequency of coastal flooding and erosion than has the rise in sea level. Where tectonic-induced vertical land motions are significant and coastlines are presently emergent relative to mean sea level, increasing wave heights results in these stretches of coast being possibly submergent relative to the TWL. While it is uncertain whether wave height increases will continue into the future, it is clear that this process could remain more important than or at least as important as SLR for the coming decades, and needs to be taken into account in terms of the increasing exposure of coastal communities and ecosystems to flooding and erosion.
  • Keywords: Vertical land motions, Coastal flooding, Wave height increases, Sea level rise, Total water level, Coastal erosion, Storminess, Coastal hazards, Oregon, Pacific Northwest
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  • Ruggiero, P. (2013). ”Is the Intensifying Wave Climate of the U.S. Pacific Northwest Increasing Flooding and Erosion Risk Faster Than Sea-Level Rise?.” Journal of Waterway, Port, Coastal, and Ocean Engineering, 139(2), 88–97.
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  • 139
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  • 2
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  • The author gratefully acknowledges the support of NOAA’s Sectoral Applications Research Program (SARP) under NOAA Grant# NA08OAR4310693 and NOAA’s National Sea Grant College Program under NOAA Grant’s #NA06OAR4170010.
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