socal1998.shp - Vectorized Cliff Edge of Southern California Derived from 1998 Lidar Source Data

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Cheryl Hapke
Originator: David Reid
Originator: Krystal Green
Publication_Date: 2007
Title:
socal1998.shp - Vectorized Cliff Edge of Southern California Derived from 1998 Lidar Source Data
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:
There are critical needs for a nationwide compilation of reliable cliff edge data.  To meet these needs, the USGS has produced a comprehensive database of digital vector cliff edges by compiling cliff edge positions from pre-existing historical cliff edge databases and by generating historical and modern cliff edge data.  Cliff edges are compiled by state and generally correspond to two periods: 1920s-1930s and 1998-2002.  Each cliff edge may represent a compilation of data from one or more sources for one or more dates provided by one or more agencies.  Details regarding source are provided in the 'data quality information' section of this metadata report.  Cliff edge vectors derived from both historic sources (first time period) and modern sources (final time period) represent the cliff edge at the time of the survey.
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: 19980410
Currentness_Reference:
ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -119.999829
East_Bounding_Coordinate: -117.235386
North_Bounding_Coordinate: 34.494209
South_Bounding_Coordinate: 32.630949
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: Cliff Edge
Theme_Keyword: Historic Cliff Edge
Theme_Keyword: Cliff 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: oceans and estuaries
Theme_Keyword: oceans and coastal
Theme_Keyword: geoscientificInformation
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_Address:
Address_Type: mailing and physical address
Address:
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 Assessment 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/
Back to Top
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The data supplied here are a compilation of information collected from numerous LIDAR (LIght Detection And Ranging) surveys.  Attribute data was generated once the point solutions from the elevation point data were processed and identified as representing the cliff edge location.  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:
There is significant agreement of linework between adjacent cliff edges.  Cliff edges were checked for accuracy, but no edgematching attempts were made between adjacent cliff edges even if slight offsets existed.
Completeness_Report:
This cliff edge data adequately represented the cliff edge at the time of the survey.  Remaining gaps in these data, if applicable, are a consequence of non-existing data or existing data that did not meet quality assurance standards.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The maximum estimated positional error for this cliff edge is 1.4 meters. Please visit our full report on cliff erosion along the Coastline of California (<http://pubs.usgs.gov/of/2007/1133), under the heading  "Uncertainties and Errors", for a complete explanation of the measurement error.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Coastal Remote Sensing/Coastal Services Center
Publication_Date: 20050829
Title:
Aircraft Laser/GPS Mapping of Coastal Topography.
Edition: 1.0
Publication_Information:
Publication_Place: Charleston, SC
Publisher: NOAA Coastal Services Center
Other_Citation_Details:
This data set has been extracted from one much larger. See the URL for the location of this larger data set.
Online_Linkage: http://www.csc.noaa.gov/lidar/
Online_Linkage: http://maps.csc.noaa.gov/TCM/
Type_of_Source_Media: Lidar Vector Shoreline
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19980410
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
Lidar
Source_Contribution:
USGS/NASA Airborne Topographic Mapper
Process_Step:
Process_Description:
The USGS in collaboration with NASA, used the NASA Airborne Topographic Mapper (ATM II and III) mounted on a Twin Otter Aircraft to map coastal beaches. The raw data was georeferenced at elevation points every few square meters. The original data from ATM was collected in WGS 84, ITRF 97, in a geographic (lat/long) coordinate system with irregular spacing. The data was then converted to NAD 83 and NAVD 88. The cliff edge generation involved an analysis of shore-normal profiles at 20m intervals alongshore.  The point solutions were connected to produce a continuous vector cliff edge in shapefile format.  A shore-parallel reference line was digitized as a permanent baseline for any future cliff edge generation.  Data were projected to UTM zone 10 NAD27 for statistical analysis in the Digital Shoreline Analysis System (DSAS) software.
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
Back to Top
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: 89
Back to Top
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
Back to Top
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: SoCal1998
Entity_Type_Definition:
Vector Cliff Edge from Lidar Overflight
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 features.
Attribute:
Attribute_Label: DESCR
Attribute_Definition:
Detailed description of the feature.
Attribute_Definition_Source:
U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Describes additional characteristics of the feature.
Attribute:
Attribute_Label: ACCURACY
Attribute_Definition:
Position accuracy of feature.
Attribute_Definition_Source:
U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition:
The accuracy is not given but should be 1.4 meters.
Enumerated_Domain_Value_Definition_Source:
U.S. Geological Survey
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: 40677
Attribute:
Attribute_Label: Date_
Attribute_Definition:
Date of Lidar overflight
Attribute_Definition_Source:
U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 19980410
Enumerated_Domain_Value_Definition:
The date of the data collection.
Enumerated_Domain_Value_Definition_Source:
U.S. Geological Survey
Back to Top
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
Hours_of_Service: Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time
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: 0.348
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.
Back to Top
Metadata_Reference_Information:
Metadata_Date: 20070320
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
Back to Top