Identification_Information: Citation: Citation_Information: Originator: Cheryl Hapke Originator: David Reid Publication_Date: 2007 Title: socal_baseline.shp - Offshore Baseline for Southern California Generated to Calculate Cliff Erosion Rates Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2007-1112 Publication_Information: Publication_Place: U.S. Geological Survey, Pacific Science Center, Santa Cruz, California Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2007/1112/SCal.zip Online_Linkage: http://pubs.usgs.gov/of/2007/1112/ Larger_Work_Citation: Citation_Information: Originator: Cheryl Hapke Originator: David Reid Originator: Krystal Green Originator: Mark Borrelli Publication_Date: 2007 Title: National Assessment of Shoreline Change: Part 4: A GIS Compilation of Vector cliff edges and associated change data for the cliffed shorelines of the California Coast Series_Information: Series_Name: Open-File Report Issue_Identification: 2007-1112 Publication_Information: Publication_Place: U.S. Geological Survey, Pacific Science Center, Santa Cruz Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2007/1112/ Description: Abstract: Rates of cliff edge 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). Purpose: 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. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2005 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -120.000899 East_Bounding_Coordinate: -117.243629 North_Bounding_Coordinate: 34.494367 South_Bounding_Coordinate: 32.632072 Keywords: Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: Cliff Edge Theme_Keyword: Historic Cliff Edge Theme_Keyword: Cliff Edge Erosion Rate Theme_Keyword: Endpoint Rate Theme_Keyword: Baseline Theme_Keyword: Cliff Erosion Theme_Keyword: LIDAR Theme_Keyword: T-sheet Theme_Keyword: Tp-sheet Theme_Keyword: Coastal Survey Map Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: ESRI polyline shapefile Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: geoscientificInformation Theme_Keyword: oceans and estuaries Theme_Keyword: oceans and coastal Place: Place_Keyword_Thesaurus: Geographic Names Information System, USGS, Reston, VA Place_Keyword: United States Place_Keyword: California Access_Constraints: None Use_Constraints: 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. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Cheryl Hapke Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: USGS Patuxent Wildlife Research Center Address: University of Rhode Island Address: 317 Woodward Hall, Dept. of Geosciences City: Kingston State_or_Province: RI Postal_Code: 02881 Country: USA Contact_Voice_Telephone: 401-874-5532 Contact_Facsimile_Telephone: 401-874-2190 Contact_Electronic_Mail_Address: chapke@usgs.gov Hours_of_Service: Monday through Friday, 9 a.m. to 5 p.m., Eastern Standard Time Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 Cross_Reference: Citation_Information: Originator: Cheryl Hapke Originator: David Reid Publication_Date: 2007 Title: The National Asessment of Shoreline Change, Part 4: Historical Coastal Cliff Retreat Along the California Coast Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2007-1133 Publication_Information: Publication_Place: U.S. Geological Survey, Pacific Science Center, Santa Cruz Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2007/1133/ Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: 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. Logical_Consistency_Report: Baseline 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/). No additional checks for topological consistency were performed on the data. Completeness_Report: This baseine data represents a generalization of the coastline of California used by DSAS. Remaining gaps in this data, if applicable, are a consequence of non-existing cliff edges data. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: A Baseline was generated within ArcGIS to be used by the Digital Shoreline Anaylsis System (http://pubs.usgs.gov/of/2005/1304/)in the calculation of cliff erosion rates. Please visit our full report on cliff erosion along the Coastline of California (http://pubs.usgs.gov/of/2007/1133/) for more information about this analysis. Lineage: Process_Step: Process_Description: 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 (USGS OFR 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 edge erosion, in units of m/yr, were calculated at each transect using end point rate applied to both cliff edge positions from 1920s-1930s and 1998-2002 (derived from lidar). End point rate was selected because there were two cliff edges available. Uncertainties are reported in units of m/yr. Process_Date: 2006 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Cheryl Hapke Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: USGS Patuxent Wildlife Research Center Address: University of Rhode Island Address: Coastal Field Station Address: 317 Woodward Hall, Dept. of Geosciences City: Kingston State_or_Province: RI Postal_Code: 02881 Country: USA Contact_Voice_Telephone: 401-874-5532 Contact_Facsimile_Telephone: 401-874-2190 Contact_Electronic_Mail_Address: chapke@usgs.gov Hours_of_Service: Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time Process_Step: Process_Description: Data were projected from UTM zone 11 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]] Process_Date: 20070215 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Emily Himmelstoss Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2262 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: ehimmelstoss@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: SoCal_Baseline Entity_Type_Definition: Baseline for Southern California Entity_Type_Definition_Source: U. S. Geological Survey Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the feature. Attribute: Attribute_Label: ID Attribute_Definition: Feature number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 30 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: Pacific Science Center Address: 400 Natural Bridges Drive City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Country: USA Contact_Voice_Telephone: 831-427-4450 Contact_Facsimile_Telephone: 831-427-4748 Resource_Description: downloadable data Distribution_Liability: 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: SHP Format_Version_Number: Unspecified Format_Specification: 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. File_Decompression_Technique: zip archive Transfer_Size: 0.038 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2007/1112/SCal.zip Network_Resource_Name: http://pubs.usgs.gov/of/2007/1112/ Access_Instructions: Data are downloadable via the World Wide Web (WWW). Fees: None Technical_Prerequisites: 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. Metadata_Reference_Information: Metadata_Date: 20070319 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Cheryl Hapke Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: USGS Patuxent Wildlife Research Center Address: University of Rhode Island Address: Coastal Field Station Address: 317 Woodward Hall, Dept. of Geosciences City: Kingston State_or_Province: RI Postal_Code: 02881 Country: USA Contact_Voice_Telephone: 401-874-5532 Contact_Facsimile_Telephone: 401-874-2190 Contact_Electronic_Mail_Address: chapke@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile