Metadata: Identification_Information: Citation: Citation_Information: Originator: Kara S. Doran Originator: Justin J. Birchler Originator: Joshua M. Pardun Publication_Date: 20230822 Title: 2019 North Carolina and Virginia Post-Dorian USACE 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: 5.0 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 National Assessment of Coastal Change Hazards (NACCH) 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 2019 Post-Dorian United States Army Corps of Engineers (USACE) North Carolina and Virginia 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) 2019-311-DD; additional survey details are available available on the Coastal and Marine Geoscience Data Systems (CMGDS), at https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-311-DD. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20190926 Ending_Date: 20191019 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -76.585067 East_Bounding_Coordinate: -75.460961 North_Bounding_Coordinate: 36.593506 South_Bounding_Coordinate: 34.586422 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:a7cbb723-bf44-42ed-ae20-f87953ff83c8 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: Atlantic Ocean Place_Keyword: North Carolina Place_Keyword: Virginia Access_Constraints: None Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originators of the data in future products or derivative research. 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 10 Version 6.1 (Build 7600); Esri ArcMap 10.0.6.6000; MATLAB 2021a 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 ArcMap 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: United States Army Corps of Engineers (USACE) Publication_Date: 2020 Title: 2019 USACE NCMP DUNEX Topobathy Lidar: East Coast (NC, VA) Online_Linkage: https://www.fisheries.noaa.gov/inport/item/60170 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20190926 Ending_Date: 20191019 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2019-311-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 2017a 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: 2019-311-DD Process_Date: 20210930 Source_Produced_Citation_Abbreviation: 2019-311-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: 88794 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 (NAVD88) Altitude_Resolution: 0.0001 Altitude_Distance_Units: meter Altitude_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 2019-310-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: 11 Range_Domain_Maximum: 12 Attribute: Attribute_Label: segment Attribute_Definition: Segment ID number. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 25 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: 4158 Attribute: Attribute_Label: lon Attribute_Definition: Feature location longitude (WGS84). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -76.585067 Range_Domain_Maximum: -75.460961 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: 34.586422 Range_Domain_Maximum: 36.593506 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: -2342.0864 Range_Domain_Maximum: 765.8182 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: 0.26 Range_Domain_Maximum: 19.9396 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: 19.9396 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 (NAVD88). Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0058 Range_Domain_Maximum: 2.0178 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: 8.4242 Range_Domain_Maximum: 318.5878 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: 0.0054 Range_Domain_Maximum: 0.2358 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 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 Contact_Voice_Telephone: 727-502-8117 Contact_Facsimile_Telephone: 727-502-8001 Contact_Electronic_Mail_Address: kdoran@usgs.gov Resource_Description: 2019-311-DD_morphology.csv Distribution_Liability: This digital publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. 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/2019-311-DD_morphology.zip Fees: none Metadata_Reference_Information: Metadata_Date: 20230822 Metadata_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 Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time