Large-scale responses of complex-shaped coastlines to local shoreline stabilization and climate change
MetadataShow full item record
When modeling the large-scale (> km) evolution of coastline morphology, the influence of natural forces is not the only consideration; ongoing direct human manipulations can substantially drive geomorphic change. In this paper, we couple a human component to a numerical model of large-scale coastline evolution, incorporating beach “nourishment” (periodically placing sand on the beach, also called “beach replenishment” or “beach fill”). Beach nourishment is the most prevalent means humans employ to alter the natural shoreline system in our case study, the Carolina coastline. Beach nourishment can cause shorelines adjacent to those that are nourished to shift both seaward and landward. When we further consider how changes to storm behaviors could change wave climates, the magnitude of morphological change induced by beach nourishment can rival that expected from sea level rise and affect the coast as far as tens of kilometers away from the nourishment site. In some instances, nonlocal processes governing large-scale cuspate-cape coastline evolution may transmit the human morphological “signal” over surprisingly large (hundreds of kilometer) distances.
Author Posting. © American Geophysical Union, 2010. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 115 (2010): F03033, doi:10.1029/2009JF001486.
Showing items related by title, author, creator and subject.
High-angle wave instability and emergent shoreline shapes : 2. Wave climate analysis and comparisons to nature Ashton, Andrew D.; Murray, A. Brad (American Geophysical Union, 2006-12-15)Recent research has revealed that the plan view evolution of a coast due to gradients in alongshore sediment transport is highly dependant upon the angles at which waves approach the shore, giving rise to an instability ...
Ummenhofer, Caroline C.; Xu, Hong; Twine, Tracy E.; Girvetz, Evan H.; McCarthy, Heather R.; Chhetri, Netra; Nicholas, Kimberly A. (American Meteorological Society, 2015-06-15)Downscaled climate model projections from phase 5 of the Coupled Model Intercomparison Project (CMIP5) were used to force a dynamic vegetation agricultural model (Agro-IBIS) and simulate yield responses to historical climate ...
Antarctic penguin response to habitat change as Earth's troposphere reaches 2°C above preindustrial levels Ainley, David G.; Russell, Joellen; Jenouvrier, Stephanie; Woehler, Eric; Lyver, Philip O'B.; Fraser, William R.; Kooyman, Gerald L. (Ecological Society of America, 2010-02)We assess the response of pack ice penguins, Emperor (Aptenodytes forsteri) and Adélie (Pygoscelis adeliae), to habitat variability and, then, by modeling habitat alterations, the qualitative changes to their populations, ...