Metadata: Identification_Information: Citation: Citation_Information: Originator: Cheryl Hapke Originator: David Reid Publication_Date: 2006 Title: CENCAL_1998_2002 - Vectorized Shoreline of Central California Derived from 1998-2002 Lidar Source Data Edition: 1.1 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1251 Publication_Information: Publication_Place: Pacific Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20061251 Larger_Work_Citation: Citation_Information: Originator: Cheryl Hapke Originator: David Reid Publication_Date: 2006 Title: National Assessment of Shoreline Change: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the Sandy Shorelines of the California Coast Edition: 1.1 Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1251 Publication_Information: Publication_Place: Pacific Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20061251 Description: Abstract: There are critical needs for a nationwide compilation of reliable shoreline data. To meet these needs, the U.S. Geological Survey (USGS) has produced a comprehensive database of digital vector shorelines by compiling shoreline positions from pre-existing historical shoreline databases and by generating historical and modern shoreline data. Shorelines are compiled by state and generally correspond to one of four time periods: 1800s, 1920s-1930s, 1970s, and 1998-2002. Each shoreline 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. Shoreline vectors derived from historic sources (first three time periods) represent the high water line at the time of the survey, whereas modern shorelines (final time period) represent the mean high water line. Purpose: Historical shoreline change is considered to be a crucial element in studying the vulnerability of the national shoreline. These data are used in a shoreline change analysis for the U.S. Geological Survey (USGS) National Assessment Project. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1998 Ending_Date: 2002 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -123.010701 East_Bounding_Coordinate: -120.001241 North_Bounding_Coordinate: 38.201953 South_Bounding_Coordinate: 34.445401 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:c0406faa-98ea-4226-bd23-60e5c6a7cc2d Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Shoreline Theme_Keyword: Historic Shoreline Theme_Keyword: Shoreline Change Rate Theme_Keyword: Linear Regression Rate Theme_Keyword: Endpoint Rate Theme_Keyword: Baseline Theme_Keyword: Beach Erosion 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: elevation Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: effects of coastal change Theme_Keyword: coastal processes Theme_Keyword: shoreline accretion Theme_Keyword: shoreline erosion Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: Beach Nourishment Theme_Keyword: LIDAR Theme_Keyword: coastal processes Theme_Keyword: erosion Theme_Keyword: shoreline accretion Theme: Theme_Keyword_Thesaurus: Coastal and Marine Ecological Classification Standard (CMECS) Theme_Keyword: Continental/Island Shore Complex Place: Place_Keyword_Thesaurus: General Place_Keyword: United States Place_Keyword: California Place: Place_Keyword_Thesaurus: Coastal and Marine Ecological Classification Standard (CMECS) Place_Keyword: Northern California Ecoregion Stratum: Stratum_Keyword_Thesaurus: Coastal and Marine Ecological Classification Standard (CMECS) Stratum_Keyword: Substrate Access_Constraints: None Use_Constraints: This data set is not to be used for navigational purposes. Public domain data from the U.S. government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: US Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780 Cross_Reference: Citation_Information: Originator: Cheryl J. Hapke Originator: David Reid Originator: Bruce M. Richmond Originator: Peter Ruggiero Originator: Jeff List Publication_Date: 2006 Title: National Assessment of Shoreline Change Part 3: Historical Shoreline Change and Associated Coastal Land Loss Along Sandy Shorelines of the California Coast Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1219 Publication_Information: Publication_Place: Pacific Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20061219 Data_Quality_Information: 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 positional error for this shoreline, considered independently, is 1.5m. However, if the lidar mean high water shoreline (mhwl) is used for comparison with other high water shorelines (hwl), an additional shoreline proxy offset must be considered. When the offset error is considered, as it pertains to lidar shorelines of the coastline of California, it varies based on beach slope, wave height, wave length, and tide level. Calculations of these parameters along the open coastline of California were made in order to quantify this bias offset. Please visit our full report on shoreline change along the sandy shoreline of the coast of California (http://pubs.usgs.gov/of/2006/1219/), under the heading 'Uncertainties and Errors', for a complete explanation of the measurement error. Lineage: 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 in April 1998 and October 2002 (specifically 19980408, 19980415, 19980417, 019980418, and 20021002). The raw data were 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 were then converted to NAD 83 and NAVD 88. The shoreline generation involved an analysis of shore-normal profiles at 20-m intervals alongshore. First, a shore-parallel reference line was digitized as a permanent baseline for any future shoreline generation. Profiles were assessed at 20-m intervals perpendicular to the reference line. Each profile consisted of a 4-m wide swath of data points. An algorithm determined the shoreline position for each profile based on a regression fit through the foreshore of the profile. The function was evaluated at the mean high water (mhw) level to identify the horizontal position of the shoreline. Results were only accepted if the R-squared value of the regression was significant to the 95-percent confidence level. The shoreline point solutions were then quality checked in ArcView GIS software against a gray scale elevation grid of the same data. Point solutions were connected to produce a continuous vector shoreline in shapefile format. Process date is an estimate. Process_Date: 2002 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Bruce Richmond Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: Pacific Science Center Address: 2885 Mission Street City: Santa Cruz State_or_Province: Ca Postal_Code: 95060 Country: USA Contact_Voice_Telephone: (831) 427-4450 Process_Step: Process_Description: Data were projected from UTM zone 10 to geographic with Datum shift from NAD27 to NAD83_6 Tool: ArcGIS > ArcToolbox > Toolboxes > Data Management Tools > Project Command issued: ['GCS_North_American_1983',DATUM['D_North_American_1983', SPHEROID['GRS_1980',6378137.0,298.257222101]], PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]] NAD_1927_To_NAD_1983_6 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_Electronic_Mail_Address: ehimmelstoss@usgs.gov Process_Step: Process_Description: Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. Process_Date: 20170207 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Alan O. Allwardt Contact_Position: Contractor -- Information Specialist Contact_Address: Address_Type: mailing and physical address Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7551 Contact_Electronic_Mail_Address: aallwardt@usgs.gov Process_Step: Process_Description: Added keywords from Coastal and Marine Ecological Classification Standard (CMECS) to metadata. Process_Date: 20180426 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Alan O. Allwardt Contact_Position: Contractor -- Information Specialist Contact_Address: Address_Type: mailing and physical address Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7551 Contact_Electronic_Mail_Address: aallwardt@usgs.gov Process_Step: Process_Description: Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Process_Date: 20201019 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Process_Step: Process_Description: Edited metadata to perform minor edits to bring the metadata up to current PCMSC standards. No data were changed. The metadata available from a harvester may supersede metadata bundled within a download file. Users are advised to compare the metadata dates to determine which metadata file is most recent. Process_Date: 20211025 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Susan Cochran Contact_Position: Geologist Contact_Address: Address_Type: Mailing and Physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7545 Contact_Electronic_Mail_Address: scochran@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: 15126 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: Cencal_1998_2002 Entity_Type_Definition: Vector Shoreline from Lidar Overflight Entity_Type_Definition_Source: USGS 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: 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 or is not known. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. 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: TYPE Attribute_Definition: Type of feature. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Shoreline Enumerated_Domain_Value_Definition: Vector shoreline. Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey 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: SOURCE Attribute_Definition: Agency that provided feature or data used to create feature. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Describes source data of the feature. Attribute: Attribute_Label: DATE_ Attribute_Definition: Date of Lidar Over Flight Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 19980408 Range_Domain_Maximum: 20021002 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: 2885 Mission Street 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: USGS Open-File Report 2006-1251 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: shapefile Format_Version_Number: 20060901 Format_Specification: Seven files comprise the ArcView shapefile: .dbf, .shp, .shx, .prj, .avl, .sbx, .sbn File_Decompression_Technique: no compression applied Transfer_Size: 1.338 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2006/1251/CCal.zip Network_Resource_Name: http://pubs.usgs.gov/of/2006/1251/#gis Access_Instructions: Data may be downloaded 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: 20211025 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: US Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time