Hydrology and Land Surface Studies
Transient and persistent shoreline change from a storm
Article first published online: 22 APR 2010
Copyright 2010 by the American Geophysical Union.
Geophysical Research Letters
Volume 37, Issue 8, April 2010
How to Cite
2010), Transient and persistent shoreline change from a storm, Geophys. Res. Lett., 37, L08401, doi:10.1029/2009GL042252., , and (
- Issue published online: 22 APR 2010
- Article first published online: 22 APR 2010
- Manuscript Accepted: 15 MAR 2010
- Manuscript Revised: 11 MAR 2010
- Manuscript Received: 20 DEC 2009
- shoreline change;
- principal components
 There is disagreement as to whether shoreline position eventually recovers from large storms. In an earlier paper we showed that statistical modeling of historical shoreline data was improved by including large storms in the model via a transient storm function. Here we show that, at shorter timescales of months to years, modeling of the shoreline at Assateague Island, MD is improved by a storm model with both transient and persistent components. We find that the shoreline recovers from the storm rapidly, almost within a year, but that the recovery is only partial, despite anthropogenic reconstruction of a pre-existing berm. The long-term trend of a shoreline (whether erosive, accretive, or stationary) can thus be regarded as the cumulative persistent component of successive storms, although most long-term data sets are too temporally sparse to make such a parameterization more useful than a steady long-term rate.