Metadata:
  Identification_Information:
    Citation:
      Citation_Information:
        Originator: Nadine E. Golden
        Publication_Date: 2013
        Title: Contours--Offshore of Carpinteria, California
        Edition: Version 1.0, 2013
        Geospatial_Data_Presentation_Form: vector
        Larger_Work_Citation:
          Citation_Information:
            Originator: Samuel Y. Johnson
            Originator: Peter Dartnell
            Originator: Guy R. Cochrane
            Originator: Nadine E. Golden
            Originator: Eleyne L. Phillips
            Originator: Andrew C. Ritchie
            Originator: Rikk G. Kvitek
            Originator: H. Gary Greene
            Originator: Charles A. Endris
            Originator: Gordon G. Seitz
            Originator: Ray W. Sliter
            Originator: Mercedes D. Erdey
            Originator: Florence L. Wong
            Originator: Carlos I. Gutierrez
            Originator: Lisa M. Krigsman
            Originator: Amy E. Draut
            Originator: Patrick E. Hart
            Originator: Susan A. Cochran
            Publication_Date: 2013
            Title: California State Waters Map Series--Offshore of Carpinteria, California
            Geospatial_Data_Presentation_Form: map
            Series_Information:
              Series_Name: Scientific Investigations Map
              Issue_Identification: SIM 3261
            Publication_Information:
              Publication_Place: Reston, VA
              Publisher: U.S. Geological Survey
            Online_Linkage: http://pubs.usgs.gov/sim/3261/
        Larger_Work_Citation:
          Citation_Information:
            Originator: Nadine E. Golden
            Publication_Date: 2013
            Title: California State Waters Map Series Data Catalog
            Geospatial_Data_Presentation_Form: database
            Series_Information:
              Series_Name: Data Series
              Issue_Identification: DS 781
            Publication_Information:
              Publication_Place: Reston, VA
              Publisher: U.S. Geological Survey
            Online_Linkage: http://pubs.usgs.gov/ds/781/

    Description:
      Abstract:
        This part of SIM 3261 presents data for the bathymetric contours for several seafloor maps (see sheets 1, 2, 3, 5 [in figs. 1, 2, 3], 7, 10, SIM 3261) of the Offshore of Carpinteria map area, California. The vector data file is included in "Contours_OffshoreCarpinteria.zip," which is accessible from http://pubs.usgs.gov/ds/781/OffshoreCarpinteria/data_catalog_OffshoreCarpinteria.html.
        The bathymetry and shaded-relief maps of the Offshore of Carpinteria map area, California, were generated from bathymetry data collected by California State University, Monterey Bay, Seafloor Mapping Lab (CSUMB), by the U.S. Geological Survey (USGS), and by Fugro Pelagos for the U.S. Army Corps of Engineers (USACE) Joint Lidar Bathymetry Technical Center of Expertise. The southeastern nearshore and shelf areas, as well as the western midshelf area, were mapped by CSUMB in the summer of 2007, using a 244-kHz Reson 8101 multibeam echosounder. The western nearshore area, as well as the western outer shelf area, were mapped by the USGS in 2005 and 2006, using 117-kHz and 234.5-kHz SEA (AP) Ltd. SWATHplus-M phase-differencing sidescan sonars. The nearshore bathymetry and coastal topography were mapped for USACE by Fugro Pelagos in 2009, using the SHOALS-1000T bathymetric-lidar and Leica ALS60 topographic-lidar systems. All these mapping missions combined to collect bathymetry from the 0-m isobath to beyond the 3-nautical-mile limit of California's State Waters. A smooth arithmetic mean convolution function applying a weight of one-ninth to each cell in a 3-pixel by 3-pixel matrix was then applied iteratively to the grid ten times. Following smoothing, contour lines were generated at 10-m intervals, from -10 m to -100 m, and at 50-m intervals, from -100 m to -400 m, then the contours were clipped to the boundary of the map area.
      Purpose: These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to identify bathymetric features.
    Time_Period_of_Content:
      Time_Period_Information:
        Range_of_Dates/Times:
          Beginning_Date: 2005
          Ending_Date: 2007
      Currentness_Reference: ground condition
    Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: As needed
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: -119.6256
        East_Bounding_Coordinate: -119.4265
        North_Bounding_Coordinate: 34.4492
        South_Bounding_Coordinate: 34.292
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD)
        Theme_Keyword: Oceans > Bathymetry/SeafloorTopography > Bathymetry
        Theme_Keyword: Oceans > Bathymetry/SeafloorTopography > Seafloor Topography
      Theme:
        Theme_Keyword_Thesaurus: General
        Theme_Keyword: Marine Geology
        Theme_Keyword: Multibeam
        Theme_Keyword: Contours
        Theme_Keyword: Bathymetry
        Theme_Keyword: Water Depth
        Theme_Keyword: Ocean Floor Topography
        Theme_Keyword: U.S. Geological Survey
        Theme_Keyword: USGS
        Theme_Keyword: Pacific Coastal and Marine Science Center
        Theme_Keyword: CMGP
      Theme:
        Theme_Keyword_Thesaurus: ISO 19115 Topic Category
        Theme_Keyword: geoscientificinformation
        Theme_Keyword: imageryBaseMapsEarthCover
        Theme_Keyword: oceans
      Place:
        Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
        Place_Keyword: Santa Barbara Channel
        Place_Keyword: Carpinteria
        Place_Keyword: Summerland
        Place_Keyword: Pacific Ocean
        Place_Keyword: California
    Access_Constraints: None
    Use_Constraints:
      Please recognize the U.S. Geological Survey (USGS) and the California State University, Monterey Bay, Seafloor Mapping Lab (CSUMB). USGS-authored or produced data and information are in the public domain. This information is not intended for navigational purposes.
      Read and fully comprehend the metadata prior to data use. Uses of these data should not violate the spatial resolution of the data.
      Where these data are used in combination with other data of different resolution, the resolution of the combined output will be limited by the lowest resolution of all the data.
      Acknowledge the U.S. Geological Survey in products derived from these data. Share data products developed using these data with the U.S. Geological Survey.
      This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to
      rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and
      review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any
      damages resulting from its authorized or unauthorized use.
      Although this Federal Geographic Data Committee-compliant metadata file is intended to document these data in nonproprietary form, as
      well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
    Point_of_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Peter Dartnell
          Contact_Organization:
            U.S. Geological Survey,
            Pacific Coastal and Marine Science Center
        Contact_Position: Physical Scientist
        Contact_Address:
          Address_Type: mailing and physical address
          Address: 400 Natural Bridges Dr.
          City: Santa Cruz
          State_or_Province: CA
          Postal_Code: 95060-5792
          Country: USA
        Contact_Voice_Telephone: (831) 460-7415
        Contact_Facsimile_Telephone: (831) 427-4709
        Contact_Electronic_Mail_Address: pdartnell@usgs.gov
  Data_Quality_Information:
    Attribute_Accuracy:
      Attribute_Accuracy_Report: Not applicable for raster data.
    Logical_Consistency_Report: Unspecified
    Completeness_Report: Complete
    Positional_Accuracy:
      Horizontal_Positional_Accuracy:
        Horizontal_Positional_Accuracy_Report: Estimated to be no less than 2 m, owing to total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations.
      Vertical_Positional_Accuracy:
        Vertical_Positional_Accuracy_Report: Estimated to be no less than 20 cm, owing to total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations.
    Lineage:
      Process_Step:
        Process_Description: The bathymetry and shaded-relief maps of the Offshore of Carpinteria map area in southern California were generated from data collected by California State University, Monterey Bay, Seafloor Mapping Lab (CSUMB), by the U.S. Geological Survey (USGS), and by Fugro Pelagos for the U.S. Army Corps of Engineers (USACE) Joint Lidar Bathymetry Technical Center of Expertise. All these mapping missions combined to collect bathymetry from about the 0-m isobath to beyond the 3-nautical-mile limit of California's State Waters. During the CSUMB mapping mission, an Applanix position and motion compensation system (POS/MV) was used to accurately position the vessel during data collection, and it also accounted for vessel motion such as heave, pitch, and roll (position accuracy, +/-2 m; pitch, roll, and heading accuracy, +/-.02 degrees; heave accuracy, +/-5 percent, or 5 cm). During the USGS mapping missions, differential GPS data were combined with measurements of vessel motion (heave, pitch, and roll) in a CodaOctopus F180 attitude-and-position system to produce a high-precision vessel-attitude packet. This packet was transmitted to the acquisition software in real time and combined with instantaneous sound-velocity measurements at the transducer head before each ping. The returned samples were projected to the seafloor using a ray-tracing algorithm that works with previously measured sound-velocity profiles. Statistical filters were applied to the raw samples that discriminate the seafloor returns (soundings) from unintended targets in the water column. The original soundings were referenced to the WGS 1984 relative to the MLLW (Mean Lower Low Water) tidal datum, but, through postprocessing using NOAA's VDatum tool, the soundings were transformed to NAVD 1988. Finally, the soundings were converted into 2-m-resolution bathymetric-surface-model grids. During the Fugro Pelagos mapping mission that was completed as part of the National Coastal Mapping Program of USACE, the Leica ALS60 topographic-lidar and the SHOALS-1000T bathymetric-lidar systems were mounted on an aircraft that flew survey lines at an altitude of 300 to 400 m (bathymetry) and 300 to 1,200 m (topography), at speeds of between 135 and 185 knots. The ALS60 system collected data at a maximum pulse rate of 200 kHz, and the SHOALS system collected data at 1 kHz. Information on aircraft position, velocity, and acceleration were collected using the Novatel and POS A/V 410 systems (SHOALS) and the onboard GPS/IMU system (ALS60). Aircraft-position data were processed using POSPac software, and the results were combined with the lidar data to produce 3-D positions for each lidar shot. Various commercial and proprietary software packages were used to clean the data, to convert all valid data from ellipsoid to orthometric heights, and to export the data as a series of topography and bathymetry ASCII files. Final grids were provided in geographic coordinates referenced to the NAVD 1988. After merging, data were exported at 10-m resolution in WGS84 UTM 11N. A smooth arithmetic mean convolution function applying a weight of one-ninth to each cell in a 3-pixel by 3-pixel matrix was then applied iteratively to the grid ten times. Following smoothing, contour lines were generated at 10-m intervals, from -10 m to -100 m, and at 50-m intervals, from -100 m to -400 m, then the contours were clipped to the boundary of the map area (the maximum depth in the map area is -66.93 m). Small gaps in contours were connected while leaving the CONTOUR fields blank to facilitate identification.
        Process_Date: 2010
        Process_Contact:
          Contact_Information:
            Contact_Person_Primary:
              Contact_Person: Pete Dartnell
              Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center
            Contact_Position: Physical Scientist
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 400 Natural Bridges Dr.
              City: Santa Cruz
              State_or_Province: CA
              Postal_Code: 95060-5792
              Country: USA
            Contact_Voice_Telephone: (831) 460-7415
            Contact_Electronic_Mail_Address: pdartnell@usgs.gov
  Spatial_Data_Organization_Information:
    Direct_Spatial_Reference_Method: Raster
    Raster_Object_Information:
      Raster_Object_Type: Grid Cell
  Spatial_Reference_Information:
    Horizontal_Coordinate_System_Definition:
      Planar:
        Grid_Coordinate_System:
          Grid_Coordinate_System_Name: Universal Transverse Mercator
          Universal_Transverse_Mercator:
            UTM_Zone_Number: 11
            Transverse_Mercator:
              Scale_Factor_at_Central_Meridian: 0.9996
              Longitude_of_Central_Meridian: -117.00000
              Latitude_of_Projection_Origin: 0.00000
              False_Easting: 500000.0
              False_Northing: 0.00
        Planar_Coordinate_Information:
          Planar_Coordinate_Encoding_Method: coordinate pair
          Coordinate_Representation:
            Abscissa_Resolution: 2.0
            Ordinate_Resolution: 2.0
          Planar_Distance_Units: Meters
      Geodetic_Model:
        Horizontal_Datum_Name: WGS84
        Ellipsoid_Name: NAVD88
        Semi-major_Axis: 6378137.00 meters
        Denominator_of_Flattening_Ratio: 298.257223563


  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: Contours_OffshoreCarpinteria.shp
        Entity_Type_Definition: The shapefile attributes include FID - Internal Feature Number, SHAPE - feature geometry, VALUE - code for the seafloor character classes, ID - feature ID, and CONTOUR - contour depth value. The shapefile can be added to any ESRI ArcMap project.
        Entity_Type_Definition_Source: ESRI
      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: Polyline
      Attribute:
        Attribute_Label: ID
        Attribute_Definition: Unique identifier for each contour line. Value of 0 means the line segment has been generated during the smoothing process.
        Attribute_Definition_Source: ESRI
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0
            Range_Domain_Maximum: 137
            Attribute_Units_of_Measure: Double
      Attribute:
        Attribute_Label: CONTOUR
        Attribute_Definition: Contours are lines that connect points of equal depth based on the bathymetry grid. The contour values indicate the depth value the line represents. This makes it easier to identifier features on the seafloor. After smoothing of the bathymetry grid, contour lines were generated at 10-m intervals, from -10 m to -90 m, and at 50-m intervals, from -100 m to -400 m, then the contours were clipped to the boundary of the map area.  Values are negative to indicate depth below sea level. The value of 0 represents a line segment created during the smoothing process.
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0
            Range_Domain_Maximum: -40
            Attribute_Units_of_Measure: Integer values 0 to -40 representing depth intervals as described above.
  Metadata_Reference_Information:
    Metadata_Date: 20130514
    Metadata_Review_Date: 20130514
    Metadata_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Peter Dartnell
          Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center
        Contact_Position: Physical Scientist
        Contact_Address:
          Address_Type: mailing and physical address
          Address: 400 Natural Bridges Dr.
          City: Santa Cruz
          State_or_Province: CA
          Postal_Code: 95060-5792
          Country: USA
        Contact_Voice_Telephone: (831) 460-7415
        Contact_Facsimile_Telephone: (831) 427-4709
        Contact_Electronic_Mail_Address: pdartnell@usgs.gov
    Metadata_Standard_Name:
      Content Standard for Digital Geospatial Metadata
      ("CSDGM version 2")
    Metadata_Standard_Version: FGDC-STD-001-1998
    Metadata_Time_Convention: universal time