socal_baseline.shp - Offshore Baseline for Southern California Generated to Calculate Cliff Erosion Rates

Metadata:


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/
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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
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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
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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
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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
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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.
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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
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