Metadata:
  Identification_Information:
    Citation:
      Citation_Information:
        Originator: Kara S. Doran
        Originator: Justin J. Birchler
        Originator: Joshua M. Pardun
        Publication_Date: 20260115
        Title: 2022 Post Hurricane Ida Louisiana and Texas NOAA Lidar-Derived Dune Crest, Toe and Shoreline
        Geospatial_Data_Presentation_Form: tabular digital data
        Larger_Work_Citation:
          Citation_Information:
            Originator: Kara S. Doran
            Originator: Joseph W. Long
            Originator: Justin J. Birchler
            Originator: Owen T. Brenner
            Originator: Matthew W. Hardy
            Originator: Karen L.M. Morgan
            Originator: Hilary F. Stockdon
            Originator: Miguel Loubriel Torres
            Publication_Date: 20170805
            Title: Lidar-derived Beach Morphology (Dune Crest, Dune Toe, and Shoreline) for U.S. Sandy Coastlines
            Edition: 7.0
            Series_Information:
              Series_Name: U.S. Geological Survey data release
              Issue_Identification: doi:10.5066/F7GF0S0Z
            Publication_Information:
              Publication_Place: St. Petersburg, Florida
              Publisher: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
            Online_Linkage: https://doi.org/10.5066/F7GF0S0Z
    Description:
      Abstract: The storm-induced Coastal Change Hazards component of the Technical Capabilities and Applications project focuses on understanding the magnitude and variability of extreme storm impacts on sandy beaches. Light detection and ranging (lidar)-derived beach morphologic features such as dune crest, toe, and shoreline help define the vulnerability of the beach to storm impacts. This dataset defines the elevation and position of the seaward-most dune crest and toe and the mean high-water shoreline derived from the 2022 National Oceanic and Atmospheric Administration (NOAA) National Geodetic Survey (NGS) Post Hurricane Ida Louisiana lidar survey. Beach width is included and is defined as the distance between the dune toe and shoreline along a cross-shore profile. The beach slope is calculated using this beach width and the elevation of the shoreline and dune toe.
      Purpose: To provide data on the morphology of U.S. sandy beaches. Data were collected during U.S. Geological Survey (USGS) field activity number (FAN) 2022-357-DD; additional survey details are available on the Coastal and Marine Geoscience Data Systems (CMGDS), at https://cmgds.marine.usgs.gov/services/activity.php?fan=2022-357-DD.
    Time_Period_of_Content:
      Time_Period_Information:
        Range_of_Dates/Times:
          Beginning_Date: 20221004
          Ending_Date: 20221021
      Currentness_Reference: ground condition
    Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: None planned
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: -94.445295
        East_Bounding_Coordinate: -89.446925
        North_Bounding_Coordinate: 29.778962
        South_Bounding_Coordinate: 29.044088
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: USGS Metadata Identifier
        Theme_Keyword: USGS:f74a0608-8791-406a-8709-766f1282a0be
      Theme:
        Theme_Keyword_Thesaurus: None
        Theme_Keyword: U.S. Geological Survey
        Theme_Keyword: USGS
        Theme_Keyword: St. Petersburg Coastal and Marine Science Center
        Theme_Keyword: SPCMSC
        Theme_Keyword: Coastal and Marine Hazards and Resources Program
        Theme_Keyword: CMHRP
      Theme:
        Theme_Keyword_Thesaurus: ISO 19115 Topic Category
        Theme_Keyword: geoscientificInformation
        Theme_Keyword: elevation
        Theme_Keyword: environment
        Theme_Keyword: oceans
      Theme:
        Theme_Keyword_Thesaurus: USGS Thesaurus
        Theme_Keyword: hazards
        Theme_Keyword: marine geology
        Theme_Keyword: ocean sciences
        Theme_Keyword: coastal processes
        Theme_Keyword: lidar
        Theme_Keyword: geomorphology
        Theme_Keyword: hurricanes
      Place:
        Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
        Place_Keyword: Gulf of America
        Place_Keyword: Louisiana
        Place_Keyword: Texas
    Access_Constraints: No access constraints. Please see 'Distribution Information' for details.
    Use_Constraints: These data are marked with a Creative Commons CC0 1.0 Universal License. These data are in the public domain and do not have any use constraints. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations.
    Point_of_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: U.S. Geological Survey
          Contact_Person: Kara S. Doran
        Contact_Address:
          Address_Type: mailing and physical
          Address: 600 4th Street South
          City: Saint Petersburg
          State_or_Province: FL
          Postal_Code: 33701
          Country: UNITED STATES
        Contact_Voice_Telephone: 727-502-8117
        Contact_Facsimile_Telephone: 727-502-8001
        Contact_Electronic_Mail_Address: kdoran@usgs.gov
    Native_Data_Set_Environment: Microsoft Windows 11 Version 23H2; Esri ArcGIS Pro 3.5.5; MATLAB 2024b
    Cross_Reference:
      Citation_Information:
        Originator: Stockdon, H.F., Doran, K.J., Thompson, D.M., Sopkin, K.L., Plant, N.G., and Sallenger, A.H.
        Publication_Date: 20120501
        Title: National Assessment of Hurricane-Induced Coastal Erosion Hazards: Gulf of Mexico
        Geospatial_Data_Presentation_Form: vector digital data
        Series_Information:
          Series_Name: U.S. Geological Survey Open-File Report
          Issue_Identification: 2012-1084
        Publication_Information:
          Publication_Place: Reston, VA
          Publisher: U.S. Geological Survey
        Online_Linkage: https://doi.org/10.3133/ofr20121084
  Data_Quality_Information:
    Logical_Consistency_Report: Morphologic features were reviewed for quality assurance/quality control (QA/QC) in ArcGIS Pro and edited in MATLAB, as needed. Gaps and anomalies in the data result from data coverage or QA/QC procedures, which are detailed in Stockdon and others (2012).
    Completeness_Report: This dataset is considered complete for the information presented as described in the abstract section. Users are advised to read the rest of the metadata record carefully for additional details.
    Positional_Accuracy:
      Horizontal_Positional_Accuracy:
        Horizontal_Positional_Accuracy_Report: Horizontal accuracy is estimated for shorelines only by calculating the 95% confidence interval of the regression line through the shoreline position and is dependent on foreshore slope, scatter in the lidar data points, and specified lidar point uncertainty. Horizontal coordinates were projected to the World Geodetic System of 1984 (WGS84) coordinate system with a resolution of 10 meters (m) in the longshore direction and 2.5 m in the cross-shore direction.
      Vertical_Positional_Accuracy:
        Vertical_Positional_Accuracy_Report: Vertical accuracy is determined for each dune crest and toe value based upon the scatter of data in the lidar grid cell. Vertical coordinates were projected to the North American Vertical Datum of 1988 (NAVD88) coordinates system with a resolution of 10 centimeters.
    Lineage:
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: National Oceanic and Atmospheric Administration (NOAA)
            Publication_Date: 20230811
            Title: 2022 NOAA NGS Topobathy Lidar Post Hurricane Ida: Louisiana
            Online_Linkage: https://www.fisheries.noaa.gov/inport/item/73694
        Type_of_Source_Media: Online digital data
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 20221004
              Ending_Date: 20221021
          Source_Currentness_Reference: ground condition
        Source_Citation_Abbreviation: 2022-357-DD
        Source_Contribution: A lidar survey that was used to estimate dune morphology variables.
      Process_Step:
        Process_Description: Elevation data points from the lidar survey were interpolated in MATLAB 2024b to a gridded domain (segment) that was rotated parallel to the shoreline and had a resolution of 10 meters (m) in the longshore direction and 2.5 m in the cross-shore direction. The interpolation method applies spatial filtering with a Hanning window that is twice as wide as the grid resolution. Dune crest, toe and shoreline are extracted from the elevation grid in MATLAB every 10 m alongshore (each grid row is a profile). For details on feature extraction see: Stockdon and others (2012). The dataset was then converted to a comma-separated values file (.csv) for publication in this data release (Doran and others, 2017).
        Source_Used_Citation_Abbreviation: 2022-357-DD
        Process_Date: 20260115
        Source_Produced_Citation_Abbreviation: 2022-357-DD_morphology.csv
  Spatial_Data_Organization_Information:
    Direct_Spatial_Reference_Method: Point
    Point_and_Vector_Object_Information:
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type: Point
        Point_and_Vector_Object_Count: 146898
  Spatial_Reference_Information:
    Horizontal_Coordinate_System_Definition:
      Geographic:
        Latitude_Resolution: 0.0197843295
        Longitude_Resolution: 0.0229959585
        Geographic_Coordinate_Units: Decimal degrees
      Geodetic_Model:
        Horizontal_Datum_Name: D WGS 1984
        Ellipsoid_Name: WGS 1984
        Semi-major_Axis: 6378137.0
        Denominator_of_Flattening_Ratio: 298.2572235
    Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
        Altitude_Datum_Name: North American Vertical Datum of 1988
        Altitude_Resolution: 0.0001
        Altitude_Distance_Units: meter
        Altitude_Encoding_Method: Attribute values
  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: 2022-357-DD_morphology.csv
        Entity_Type_Definition: Dune crest, toe and shoreline, beach width and mean beach slope. See the accompanying data dictionary (Data dictionary for lidar.docx) for more details about the numbering system for the state, segment, and profile fields.
        Entity_Type_Definition_Source: USGS
      Attribute:
        Attribute_Label: state
        Attribute_Definition: State segment file identification (ID) number.
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 1
            Range_Domain_Maximum: 2
      Attribute:
        Attribute_Label: segment
        Attribute_Definition: Segment ID number.
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 2
            Range_Domain_Maximum: 119
      Attribute:
        Attribute_Label: profile
        Attribute_Definition: Grid row number corresponding to a cross-shore profile location.
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 1
            Range_Domain_Maximum: 5466
      Attribute:
        Attribute_Label: lon
        Attribute_Definition: Feature location longitude (WGS84).
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: -94.445295
            Range_Domain_Maximum: -89.446925
            Attribute_Units_of_Measure: decimal degrees
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 999
            Enumerated_Domain_Value_Definition: Null value
            Enumerated_Domain_Value_Definition_Source: USGS
      Attribute:
        Attribute_Label: lat
        Attribute_Definition: Feature location latitude (WGS84).
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 29.044088
            Range_Domain_Maximum: 29.778962
            Attribute_Units_of_Measure: decimal degrees
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 999
            Enumerated_Domain_Value_Definition: Null value
            Enumerated_Domain_Value_Definition_Source: USGS
      Attribute:
        Attribute_Label: x
        Attribute_Definition: Cross-shore feature location.
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: -1773.0479
            Range_Domain_Maximum: 854.5282
            Attribute_Units_of_Measure: meters
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 999
            Enumerated_Domain_Value_Definition: Null value
            Enumerated_Domain_Value_Definition_Source: USGS
      Attribute:
        Attribute_Label: z
        Attribute_Definition: Feature elevation (NAVD88). For shorelines, it is the mean high-water elevation.
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0.37
            Range_Domain_Maximum: 4.8322
            Attribute_Units_of_Measure: meters
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 999
            Enumerated_Domain_Value_Definition: Null value
            Enumerated_Domain_Value_Definition_Source: USGS
      Attribute:
        Attribute_Label: x_err
        Attribute_Definition: 95% confidence interval for the cross-shore shoreline position (NAVD88).
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0
            Range_Domain_Maximum: 19.9958
            Attribute_Units_of_Measure: meters
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 999
            Enumerated_Domain_Value_Definition: Null value
            Enumerated_Domain_Value_Definition_Source: USGS
      Attribute:
        Attribute_Label: z_err
        Attribute_Definition: Root mean squared vertical error of dune crest or toe (NAVD88).
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0.0042
            Range_Domain_Maximum: 1.0351
            Attribute_Units_of_Measure: meters
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 999
            Enumerated_Domain_Value_Definition: Null value
            Enumerated_Domain_Value_Definition_Source: USGS
      Attribute:
        Attribute_Label: beach_width
        Attribute_Definition: Distance between dune toe and shoreline (NAVD88).
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 2.7764
            Range_Domain_Maximum: 1027.1797
            Attribute_Units_of_Measure: meters
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 999
            Enumerated_Domain_Value_Definition: Null value
            Enumerated_Domain_Value_Definition_Source: USGS
      Attribute:
        Attribute_Label: slope
        Attribute_Definition: Mean beach slope calculated between dune toe and shoreline (NAVD88).
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0.0005
            Range_Domain_Maximum: 0.2869
            Attribute_Units_of_Measure: radians
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 999
            Enumerated_Domain_Value_Definition: Null value
            Enumerated_Domain_Value_Definition_Source: USGS
      Attribute:
        Attribute_Label: feature_type
        Attribute_Definition: An identifier for the type of feature in the table entry.
        Attribute_Definition_Source: USGS
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: DC
            Enumerated_Domain_Value_Definition: Dune Crest
            Enumerated_Domain_Value_Definition_Source: USGS
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: DT
            Enumerated_Domain_Value_Definition: Dune Toe
            Enumerated_Domain_Value_Definition_Source: USGS
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: SL
            Enumerated_Domain_Value_Definition: Shoreline
            Enumerated_Domain_Value_Definition_Source: USGS
    Overview_Description:
      Entity_and_Attribute_Overview: The detailed attribute descriptions for the state, segment, and profile fields are included in an accompanying data dictionary (Data dictionary for lidar.docx). These metadata are not complete without this file.
      Entity_and_Attribute_Detail_Citation: The entity and attribute information were generated by the individual and/or agency identified as the originator of the dataset. Please review the rest of the metadata record for additional details and information.
  Distribution_Information:
    Distributor:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center
          Contact_Person: USGS SPCMSC Data Management
        Contact_Address:
          Address_Type: mailing and physical
          Address: 600 4th Street South
          City: Saint Petersburg
          State_or_Province: FL
          Postal_Code: 33701
        Contact_Voice_Telephone: 727-502-8000
        Contact_Electronic_Mail_Address: gs-g-spcmsc_data_inquiries@usgs.gov
    Resource_Description: 2022-357-DD_morphology.csv
    Distribution_Liability: Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
    Standard_Order_Process:
      Digital_Form:
        Digital_Transfer_Information:
          Format_Name: comma-delimited text
          File_Decompression_Technique: The data download file is compressed and must be unzipped using software such as WinZip, 7zip, Peazip or pkUnzip before use.
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address:
                Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7GF0S0Z/data/2022-357-DD_morphology.zip
      Fees: none
  Metadata_Reference_Information:
    Metadata_Date: 20260115
    Metadata_Contact:
      Contact_Information:
        Contact_Organization_Primary:
          Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center
          Contact_Person: USGS SPCMSC Data Management
        Contact_Address:
          Address_Type: mailing and physical
          Address: 600 4th Street South
          City: Saint Petersburg
          State_or_Province: FL
          Postal_Code: 33701
        Contact_Voice_Telephone: 727-502-8000
        Contact_Electronic_Mail_Address: gs-g-spcmsc_data_inquiries@usgs.gov
    Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
    Metadata_Standard_Version: FGDC-STD-001-1998
    Metadata_Time_Convention: local time
