Identification_Information: Citation: Citation_Information: Originator: Cheryl Hapke Originator: David Reid Publication_Date: 2007 Title: cencal1929_1935.shp - Vectorized Cliff Edge of Central California Derived from 1929-1935 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/CCal.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: Range_of_Dates/Times: Beginning_Date: 1929 Ending_Date: 1935 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -123.023377 East_Bounding_Coordinate: -119.797553 North_Bounding_Coordinate: 38.242553 South_Bounding_Coordinate: 34.432568 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_Position: Geologist 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/ Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The data supplied here are a compilation of information collected from numerous National Ocean Service Coastal Survey Maps (often referred to as t-sheets or tp-sheets). In compiling this product we made no attempt to ascertain the congruency between the charted data, and the real world. Our objective was to simply capture the representative coastline as provided to us via the NOS survey maps. Every effort was made to capture the shoreline on these charts as faithfully as our skills and technology allowed, and there is every indication that we were successful to this end. However, in doing so, we automatically conveyed the character (all aspects, both good and bad) of those data to our digital product. A character which may or may not be in agreement with the real world. Because of this, the user is advised to exercise caution in making any assumptions about the fallibility, or infallibility, of the spatial information supplied here; especially when circumstances warrant a high degree of absolute positional accuracy. Logical_Consistency_Report: There is significant agreement of linework between adjacent shorelines. Shorelines were checked for accuracy, but no edgematching attempts were made between adjacent shorelines even if slight offsets existed. Completeness_Report: This shoreline data adequately represented the shoreline at the time of the survey. Remaining gaps in this 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 (. Online_Linkage: http://www.csc.noaa.gov/shoreline/ Online_Linkage: http://mapfinder.nos.noaa.gov Type_of_Source_Media: Vector Shorelines Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1929 Ending_Date: 1935 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: NOS T-Sheets Source_Contribution: NOAA NOS Topographic Sheets (t-sheet or tp-sheet maps) Process_Step: Process_Description: Cliff edges from one or more sources were sought in an effort to develop a single cliff edge for each time period. Digital cliff edges, if available from another agency, were acquired. If no digital cliff edges were available or if a data set was incomplete, T-sheets were requested from NOAA and received as scanned raster images. T-sheets were geo-registered using ERDAS Imagine geographic imaging software by placing 6-10 well-spaced ground control points at gridline intersections. Some T-sheets may have required additional coordinate transformation information from NOAA to account for datum offsets between historical datums (USSD) and modern datums (NAD27 or NAD83). Datum transformations were applied to GCP coordinates prior to registration. Total RMS error for the rectification process was maintained below 1 pixel, which translates to approximately 4m at a scale of 1:20,000 and 1.5m at a scale of 1:10,000. Geo-registered T-sheets were loaded in ArcView and vector cliff edges were digitized. Quality assessments were performed and cliff edges were edited to remove any overlap between adjacent cliff edges. No edgematching between adjacent cliff edges was attempted. Finally, cliff edges from all sources were merged to produce a single cliff edge for the period. The final cliff edge was coded with 6 attribute fields (ID, Type, Date, Descr, Source, and Accuracy) required for the Digital Shoreline Analysis System (DSAS), which was used to calculate cliff edge erosion rates. The attributes reflect the source of the data and the original survey year. Process_Date: 2006 Process_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: 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, 8am to 5pm EST Process_Step: Process_Description: 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]] Process_Date: 20070605 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: 1352 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: CenCal1929_1935 Entity_Type_Definition: Vector Cliff Edge from NOS T-Sheets 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: DATE_ Attribute_Definition: Date of vector shoreline position Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1929 Range_Domain_Maximum: 1935 Attribute: Attribute_Label: TYPE 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: SOURCE 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: Shape_Leng Attribute: Attribute_Label: Shape_Le_1 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/CCal.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: 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