Hapke, Cheryl, and Reid, David, Unknown, Long-Term Shoreline Change Rates for Northern California Generated at a 50 m Transect Spacing, 1854-2002: Open-File Report 2006-1251, U.S. Geological Survey, Coastal and Marine Geology Program, U.S. Geological Survey, Pacific Science Center, Santa Cruz, California.This is part of the following larger work.Online Links:
Hapke, Cheryl, Reid, David, Richmond, Bruce, Ruggiero, Peter, and List, Jeff, Unknown, National Assessment of Shoreline Change: Part 3, Historical Shoreline Changes and Associated Coastal Land Loss Along the Sandy Shoreline of California: Open-File Report 2006-1219, U.S. Geological Survey, Coastal and Marine Geology Program, U.S. Geological Survey, Pacific Science Center.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.001024
Ordinates (y-coordinates) are specified to the nearest 0.001024
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.400000.
The flattening of the ellipsoid used is 1/294.978698.
Sequential unique whole numbers that are automatically generated.
Coordinates defining the features.
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 5734 |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 5734 |
Baseline Identification
Indicates whether the transect was autogenerated or manually generated.
X starting position of the transect in UTM meters.
Y starting position of the transect in UTM meters.
Date and time the rate calculation was generated.
Shorelines used in calculation
X Ending position of the transect in UTM meters.
Number of shoreline intersections in the rate calculation.
| Range of values | |
|---|---|
| Minimum: | -2.36 |
| Maximum: | 3.25 |
| Units: | Meters/Year |
| Resolution: | 0.1 |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 1 |
| Units: | Meters |
| Resolution: | 0.1 |
Y Ending position of the transect in UTM meters.
The transect's horizontal angular distance from north.
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 7.06 |
| Units: | Meters |
| Resolution: | 0.1 |
(831)-427-4450 (voice)
(831)-427-4748 (FAX)
Historical shoreline change is considered to be a crucial element in studying the vulnerability of the national shoreline. These data are used in a shoreline change analysis for the USGS National Assessment Project.
Hapke, Cheryl, and Reid, David, Unknown, THE NATIONAL ASSESSMENT OF SHORELINE CHANGE: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the Sandy Shorelines of the California Coast.: Open File Report 2006-1251, USGS Coastal and Marine Geology Program, USGS Pacific Science Center, Santa Cruz, California.This is part of the following larger work.Online Links:
Hapke, Cheryl, Reid, David, Richmond, Bruce, Ruggiero, Peter, and List, Jeff, Unknown, National Assessment of Shoreline Change: Part 3, Historical Shoreline Changes and Associated Coastal Land Loss Along sandy shorelines of the California coast: Open File Report 2006-1219, USGS Coastal and Marine Geology Program, USGS Pacific Science Center, Santa Cruz, California.Online Links:
Person who carried out this activity:
(831)-427-4450 (voice)
(831)-427-4748 (FAX)
See USGS Open File Report 2006-1219
This shoreline-transect data adequately represented the intersect at the time of the analysis. Remaining gaps in this data, if applicable, are a consequence of non-existing data, transects crossing man-made features or existing data that did not meet quality assurance standards.
Transect generation was made as part of the calculation process for the Digital Shoreline Analysis System an Extension for ArcGIS (<http://pubs.usgs.gov/of/2005/1304/>)
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 (USGS) as the source of this information.
(831)-427-4450 (voice)
(831)-427-4748 (FAX)
USGS Open-File Report 2006-1219
Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, these data and information are provided with the understanding that they are not guaranteed to be usable, timely, accurate, or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user.
Neither the U.S. Government nor any agency thereof, 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 data, software, information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights.
Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.
| Data format: | ESRI Shapefile Seven files comprise the ArcView shapefile: <filename>.dbf, <filename>.shp, <filename>.shx, <filename>.prj, <filename>.avl, <filename>.sbx, <filename>.sbn Size: 2.652 |
|---|---|
| Network links: |
USGS Pacific Science Center |
(727) 803-8747 (voice)
(727) 803-2032 (FAX)
taram@usgs.gov