Inner shelf morphologic controls on the dynamics of the beach and bar system, Fire Island, New York
Edited by: Julie D. Rosati, Ping Wang, and Tiffany M. Roberts
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Abstract
The mechanism of sediment exchange between offshore sand ridges and the beach at Fire Island, New York is largely unknown. However, recent evidence from repeat nearshore bathymetry surveys, coupled with the complex but consistent bar morphology and patterns of shoreline change demonstrate that there is a feedback occurring between the regional geologic framework and modern processes. Analysis of bathymetric survey data provides direct confirmation that the offshore ridges are connected to the shoreface and are spatially persistent. The fixed nature of the nearshore morphology is further supported by time series camera data that indicate persistent bars with breaks that re-form in the same locations. A long-term time series of shoreline change shows distinct zones of erosion and accretion that are pervasive over time scales greater than a half-century, and their length-scales are similar to the spacing of the offshore ridge-trough system. The first-order geologic framework is responsible for the existence and locations of the ridges and troughs, which then influence the morphodynamics of the beach and bar system.
Suggested Citation
Hapke, C.J., Schwab, W.C., Gayes, P.T., McCoy, C., Viso, R., Lentz, E., 2011, Inner shelf morphologic controls on the dynamics of the beach and bar system, Fire Island, New York, in The proceedings of the Coastal Sediments 2011, Miami, FL, May 2-6, 2011, p. 1034-1047, https://doi.org/10.1142/9789814355537_0078.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Inner shelf morphologic controls on the dynamics of the beach and bar system, Fire Island, New York |
| ISBN | 978-981-4355-52-0 |
| DOI | 10.1142/9789814355537_0078 |
| Publication Date | June 07, 2012 |
| Year Published | 2011 |
| Language | English |
| Publisher | World Scientific |
| Contributing office(s) | Woods Hole Coastal and Marine Science Center |
| Description | 14 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Monograph |
| Larger Work Title | The proceedings of the Coastal Sediments 2011 |
| First page | 1034 |
| Last page | 1047 |
| Conference Title | Coastal Sediments 2011 |
| Conference Location | Miami, FL |
| Conference Date | May 2-6, 2011 |
| Country | United States |
| State | New York |
| Other Geospatial | Fire Island |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |