Cheryl Hapke David Reid 2007 vector digital data Open-File Report 2007-1112 U.S. Geological Survey, Pacific Science Center, Santa Cruz, California U.S. Geological Survey, Coastal and Marine Geology Program https://pubs.usgs.gov/of/2007/1112/CCal.zip https://pubs.usgs.gov/of/2007/1112/ Cheryl Hapke David Reid Krystal Green Mark Borrelli 2007 Open-File Report 2007-1112 U.S. Geological Survey, Pacific Science Center, Santa Cruz U.S. Geological Survey, Coastal and Marine Geology Program https://pubs.usgs.gov/of/2007/1112/ cencal_transects_shp Rates of cliff erosion were generated in a GIS using the Digital Shoreline Analysis System (DSAS) version 3.2; An ArcGIS extension for calculating shoreline change: U.S. Geological Survey Open-File Report 2005-1304, Thieler, E.R., Himmelstoss, E.A., Zichichi, J.L., and Miller, T.M. The extension is designed to efficiently lead a user through the major steps of shoreline change analysis. This extension to ArcGIS contains three main components that define a baseline, generate orthogonal transects at a user-defined separation along the coast, and calculate rates of change (linear regression, endpoint rate, average of rates, average of endpoints, jackknife). Historical cliff erosion is considered to be a crucial element in studying the vulnerability of the national coastline. These data are used in a cliff erosion analysis for the USGS National Assessment Project. en 2005 publication date Complete None planned -123.020187 -119.850134 38.243203 34.433273 -123.020121-119.99730234.44182138.241343 General Cliff Edge Historic Cliff Edge Cliff Erosion Rate Endpoint Rate Baseline Cliff Erosion LIDAR T-sheet Tp-sheet Coastal Survey Map U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP ESRI polyline shapefile ISO 19115 Topic Category oceans geoscientificInformation oceans and estuaries oceans and coastal Geographic Names Information System, USGS, Reston, VA United States California None Public domain data are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey (USGS) must be referenced as the originator of the dataset in any future products or research derived from these data. Cheryl Hapke U.S. Geological Survey Geologist mailing and physical address

USGS Patuxent Wildlife Research Center

University of Rhode Island

317 Woodward Hall, Dept. of Geosciences

Kingston RI 02881 USA 401-874-5532 401-874-2190 chapke@usgs.gov Monday through Friday, 9 a.m. to 5 p.m., Eastern Standard Time Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 Cheryl Hapke David Reid 2007 1.0 Open-File Report 2007-1133 U.S. Geological Survey, Pacific Science Center, Santa Cruz U.S. Geological Survey, Coastal and Marine Geology Program https://pubs.usgs.gov/of/2007/1133/ Shapefile The attributes in this dataset are based on the Digital Shoreline Analysis System (DSAS) version 3.2; An ArcGIS extension for calculating shoreline change (Thieler, E.R., Himmelstoss, E.A., Zichichi, J.L., and Miller, T.M. 2005. U.S. Geological Survey Open-File Report 2005-1304). The data has gone through a series of QA/QC procedures, and is therefore believed to accurately reflect the data gathered as part of the National Assessment of Shoreline Change Study. Cliff edge-transect intersections represent the absolute position of the intersects. No additional checks for topological consistency were performed on the data. This cliff edge-transect intersect 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. Postional Accuracy is based on position of cliff edge with respect to the transect. A baseline was manually constructed seaward of, and parallel to, the trend of cliff edges representing two general time periods (1920s-1930s and 1998-2002). Using DSAS an Extension for ArcGIS (https://pubs.usgs.gov/of/2005/1304/), transects were generated with a spacing of 20m and transect-cliff edge intersection points were saved to a separate layer. Transects were manually eliminated to prevent calculation of rates in areas where less than two cliff edges were intersected. Rates of cliff erosion, in units of m/yr, were calculated at each transect using end point analysis applied to both cliff edge positions. Uncertainties for the long-term rates are also reported in units of m/yr. 2006 Cheryl Hapke U.S. Geological Survey mailing and physical address

USGS Patuxent Wildlife Research Center

University of Rhode Island

Coastal Field Station

317 Woodward Hall, Dept. of Geosciences

Kingston RI 02881 USA 401-874-5532 401-874-2190 chapke@usgs.gov Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time Data were projected from UTM zone 10 to geographic Tool: ArcGIS > ArcToolbox > Toolboxes > Data Management Tools > Project Command issued: ['GCS_North_American_1983',DATUM['D_North_American_1983',SHPERIOD['GRS_1980',6378137.0,298.25722101]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]] 20070605 Emily Himmelstoss U.S. Geological Survey Geologist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA 508-548-8700 x2262 508-457-2310 ehimmelstoss@usgs.gov Vector String 10389 SimplePolylineFALSE10389TRUEFALSE 0.000001 0.000001 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983 Cencal_transects Cliff Edge-Transect Intersections U.S. Geological Survey Feature Class10389 FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. BaselineID Baseline ID Used by Transect U.S. Geological Survey Baseline Identification Number9 TransOrder Sequentially numbered values for each transect alongshore. U.S. Geological Survey 1 5734 Number9 ProcTime Time stamp for when DSAS computed statistics. U.S. Geological Survey Date and time the rate calculation was generated. String30 Autogen Indicates if transect was automatically generated or manually edited. U.S. Geological Survey Indicates whether the transect was autogenerated or manually generated. String1 StartX Start x-coordinate for transect position. U.S. Geological Survey X starting position of the transect in UTM meters. Float1911 StartY Start y-coordinate for transect position. U.S. Geological Survey Y starting position of the transect in UTM meters. Float1911 EndX End x-coordinate for transect position. U.S. Geological Survey X Ending position of the transect in UTM meters. Float1911 EndY End y-coordinate for transect position. U.S. Geological Survey Y Ending position of the transect in UTM meters. Float1911 Azimuth Angle of transect with respect to north (0/360 equals North) with values increasing clockwise. U.S. Geological Survey 0 360 Float1911 ShorelineDShorelineDString254PointCNTPointCNTNumber4 EPR Endpoint rate in meters/year. U.S. Geological Survey Endpoint rate in meters/year. Float1911 SHAPE_Leng Length of feature in internal units ESRI Length of feature in internal units. Float1911 Shape_Le_1Shape_Le_1Float1911 U.S. Geological Survey mailing and physical address

Pacific Science Center

400 Natural Bridges Drive

Santa Cruz CA 95060 USA 831-427-4450 831-427-4748 downloadable data 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. SHP Unspecified ESRI Polyline Shapefile. The DBF file contains the attribute data in dBASE format. The PRJ file contains the coordinate system information. The SBN and SBX files contain the spatial index of the geospatial data. The SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The XML file contains the metadata describing the data set. zip archive 0.348 0.872 https://pubs.usgs.gov/of/2007/1112/CCal.zip https://pubs.usgs.gov/of/2007/1112/ Data are downloadable via the World Wide Web (WWW). None 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 the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com. 20070319 Cheryl Hapke U.S. Geological Survey mailing and physical address

USGS Patuxent Wildlife Research Center

University of Rhode Island

Coastal Field Station

317 Woodward Hall, Dept. of Geosciences

Kingston RI 02881 USA 401-874-5532 401-874-2190 chapke@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time enhttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350cencal_transects_shp-123.020121-119.99730238.24134334.4418211-123.020121-119.99730238.24134334.4418211ISO 19115 Geographic Information - MetadataDIS_ESRI1.0dataset002file://\\EMIHIMDTXP2\I$\CA_cliffs\Original_data\Central_California\fixed\geographic\cencal_transects_shp.shpLocal Area Network0.872ShapefileGCS_North_American_1983103892007060515072500200706051507250020070605