Online Links:
Online Links:
Range of values | |
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Minimum: | 1997 |
Maximum: | 2005 |
Range of values | |
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Minimum: | 1 |
Maximum: | 12 |
Range of values | |
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Minimum: | 1 |
Maximum: | 31 |
The shoreline positions included in this dataset represent a high-resolution set of large-scale shoreline change observations collected by the ground-based SWASH (Surveying Wide-Area Shorelines) system. Between 1999 and 2005, the shoreline position has been re-surveyed 61 times over 130 km of coast from Corolla near the VA/NC border to the tip of Cape Hatteras. This represents a unique time series for quantifying large-scale coastal evolution. Because of this intensive sampling, significant inter-annual patterns of shoreline change have been identified along many sections of coast (for example, the series is long enough to extract a significant inter-annual trend "signal" from the daily shoreline change "noise"). One of the most relevant coastal change problems in North Carolina is coastal erosion leading to shoreline change. Rates of shoreline recession exceeding several meters per year threaten transportation infrastructure and result in the continual destruction of coastal property. In northern Dare County, these problems have motivated extensive studies and planning for coastal renourishment that will cost in excess of several hundred of million dollars. The processes responsible for the observed patterns of erosion and accretion along this coast are remain poorly understood, however, and the shoreline change models used in these studies have simply been tuned to match observations thereby providing no real predictive capability.
Are there legal restrictions on access or use of the data?Access_Constraints: none
Use_Constraints:Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Data format: | A zip (WinZip version 9.0) file containing the geospatial data in shapefile format and metadata describing the data set of high-resolution swash shoreline positions from Corolla to Cape Hatteras, NC. in format Shapefile (version ArcGIS 9.3) Size: 42.1 |
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Network links: |
http://pubs.usgs.gov/of/2011/1015/data/shorelines/swash_shorelines.zip http://pubs.usgs.gov/of/2011/1015/data_catalog.html |
These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.