Metadata: Identification_Information: Citation: Citation_Information: Originator: Kara S. Doran Originator: Joseph W. Long Originator: Jacquelyn R. Overbeck Publication_Date: 20150325 Title: National Assessment of Hurricane-Induced Coastal Erosion Hazards: Southeast Atlantic Salvo to Duck, North Carolina Mean (interpolated) Beach Slope Point Data Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/F7M906Q6 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F7M906Q6 Description: Abstract: The National Assessment of Coastal Change Hazards project derives features of beach morphology from lidar elevation data for the purpose of understanding and predicting storm impacts to our nation's coastlines. This dataset defines mean beach slopes along the United States Southeast Atlantic Ocean from Salvo to Duck, North Carolina for data collected at various times between 1996 and 2012. Purpose: To provide mean slope data between the endpoint locations of the Mean High Water and seaward-most dune toe elevations, interpolated to a 200 m alongshore resolution using a 400 m wide Hanning window. This dataset, NC_Mean_Slopes.txt and others associated with this project can be accessed online at https://doi.org/10.5066/F7M906Q6 Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19961009 Ending_Date: 20121129 Currentness_Reference: Ground condition Status: Progress: complete Maintenance_and_Update_Frequency: As needed. Data are updated when new lidar surveys are available. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -75.77803244 East_Bounding_Coordinate: -75.461037 North_Bounding_Coordinate: 36.243400 South_Bounding_Coordinate: 35.414028 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:15d884a5-ff30-4a53-81d9-650a701b066c Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: St. Petersburg Coastal and Marine Science Center Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: SPCMSC Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: coastal Theme_Keyword: slope Theme_Keyword: environment Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: distributions Theme_Keyword: bathymetry and elevation Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords Theme_Keyword: altimetry Theme_Keyword: topographic mapping Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: LIDAR Theme_Keyword: topography Theme_Keyword: digital elevation models Place: Place_Keyword_Thesaurus: General Place_Keyword: United States of America Place_Keyword: Atlantic Ocean Place_Keyword: North Carolina Place_Keyword: Duck, North Carolina Place_Keyword: Salvo, North Carolina Access_Constraints: None Use_Constraints: 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 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 7 Version 6.1 (Build 7600) ; ESRI ArcGIS 10.0.4.4000; MATLAB R2011b Data_Quality_Information: Logical_Consistency_Report: Data gaps exist where there are no sandy shorelines (such as over inlets, marshes, or rocky coasts). For each 400 meter window width, data will be given a null value if greater than 50% of points are missing. No additional checks for consistency were performed on this data. Completeness_Report: These data include beach and dune morphology in the form of mean beach slope. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Horizontal accuracy was not estimated. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Vertical accuracy for beach and dune morphology (dune crest and toe elevation) data is dependent on the positional accuracy of the lidar data. Estimated accuracy of lidar surveys is +/- 15 centimeters. However, vertical accuracies may vary based on the type of terrain (for example, inaccuracies may increase as slope increases or with the presence of extremely dense vegetation) and the accuracy of the GPS and aircraft-attitude measurements. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Publication_Date: 20000101 Title: 1996 Fall East Coast NOAA/NASA Airborne LiDAR Assessment of Coastal Erosion (ALACE) Project for the US Coastline Online_Linkage: http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=1 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19961009 Ending_Date: 19961016 Source_Currentness_Reference: The date when lidar surveys were conducted. Source_Citation_Abbreviation: NOAA96 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Publication_Date: 20000101 Title: 1997 Fall East Coast NOAA/USGS/NASA Airborne LiDAR Assessment of Coastal Erosion (ALACE) Project for the US Coastline Online_Linkage: http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=2 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19970915 Ending_Date: 19971002 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: NOAA97 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Publication_Date: 20000101 Title: 1998 Fall East Coast NOAA/USGS/NASA Airborne LiDAR Assessment of Coastal Erosion (ALACE) Project for the US Coastline Online_Linkage: http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=6 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19980907 Ending_Date: 2010630 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: NOAA98 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Publication_Date: 20000101 Title: 1999 Post Hurricane Dennis NOAA/USGS/NASA Airborne LiDAR Assessment of Coastal Erosion (ALACE) Project for the US Coastline Online_Linkage: http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=60 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19990909 Ending_Date: 19990909 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: NOAA99a Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Publication_Date: 20000101 Title: 1999 Post Hurricane Floyd NOAA/USGS/NASA Airborne LiDAR Assessment of Coastal Erosion (ALACE) Project for the US Coastline Online_Linkage: http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=61 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19990918 Ending_Date: 19990918 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: NOAA99b Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Publication_Date: 20000101 Title: Fall 1999 East Coast NOAA/USGS/NASA Airborne LiDAR Assessment of Coastal Erosion (ALACE) Project for the US Coastline Online_Linkage: http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=8# Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19991006 Ending_Date: 19991104 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: NOAA99c Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey (USGS) Publication_Date: Unpublished material Title: September 16, 2003 USGS Experimental Advanced Airborne Research Lidar (EAARL) Survey Type_of_Source_Media: Internal digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20030916 Ending_Date: 20030916 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: USGS03a Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey (USGS) Publication_Date: Unpublished material Title: September 21, 2003 USGS Experimental Advanced Airborne Research Lidar (EAARL) Survey Type_of_Source_Media: Internal digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20030921 Ending_Date: 20030921 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: USGS03b Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: Joint Airborne LiDAR Bathymetry Technical Center of Expertise (JALBTCX) Publication_Date: 20141114 Title: 2004 US Army Corps of Engineers (USACE) Topo/Bathy Lidar: Alabama, Florida, Mississippi and North Carolina Online_Linkage: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/19 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040401 Ending_Date: 20040925 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: USACE04 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: Joint Airborne LiDAR Bathymetry Technical Center of Expertise (JALBTCX) Publication_Date: 20141114 Title: 2005 US Army Corps of Engineers (USACE) National Coastal Mapping Program Topo/Bathy Lidar: Delaware, Maryland, New Jersey, New York, North Carolina and Virginia Online_Linkage: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/33 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20050824 Ending_Date: 20051126 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: USACE05 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM) Originator: Joint Airborne LiDAR Bathymetry Technical Center of Expertise (JALBTCX) Publication_Date: 20141114 Title: 2009 US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) Lidar: Currituck, Dare, and Hyde Counties, North Carolina Online_Linkage: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/1069 Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20090816 Ending_Date: 20090824 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: NOAAUSACE09 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey (USGS) Publication_Date: 2011 Title: EAARL Coastal Topography--Cape Hatteras National Seashore, North Carolina, Post-Nor'Ida, 2009: Bare Earth Online_Linkage: http://pubs.usgs.gov/ds/578/ Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20091127 Ending_Date: 20091201 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: USGS09 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey (USGS) Publication_Date: 2013 Title: Coastal Topography--Northeast Atlantic Coast, Post-Hurricane Sandy, 2012: Lidar point-cloud data (LAS) Online_Linkage: http://pubs.usgs.gov/ds/765/ Type_of_Source_Media: Online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20121105 Ending_Date: 20121129 Source_Currentness_Reference: The dates when lidar surveys were conducted. Source_Citation_Abbreviation: USGS12 Source_Contribution: Lidar-derived elevation data collected by this source was used to estimate dune morphology variables. Process_Step: Process_Description: For dune morphology data: Elevation data from lidar surveys were interpolated in MATLAB R2012b to a gridded domain that was rotated parallel to the shoreline and had a resolution of 10 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 morphology data are extracted from the elevation grid in MATLAB. Beach slopes were extracted from endpoint locations of the Mean High Water and dune toe elevations. The beach slopes were temporally averaged then interpolated to 200 m alongshore resolution by filtering with a 400 m wide Hanning window. More details on the methodology can be found in the USGS Open-File Report, "A method for determining average beach slope and beach slope variability for U.S. sandy coastlines" http://pubs.usgs.gov/of/2015/1053 Process_Date: 2011 Process_Step: Process_Description: Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. Process_Date: 20170124 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_Facsimile_Telephone: 831-427-4748 Contact_Electronic_Mail_Address: aallwardt@usgs.gov Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20201013 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_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity Point Point_and_Vector_Object_Count: 503 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: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: NC_Mean_Slopes.txt Entity_Type_Definition: Lidar-derived beach slope. Measured as the endpoint slope between the locations of dune toe and Mean High Water elevation. Values of -999 represent no data values. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude of interpolated shoreline position in decimal degrees. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -75.77803244 Range_Domain_Maximum: -75.461037 Attribute_Units_of_Measure: Decimal Degrees Attribute: Attribute_Label: Latitude Attribute_Definition: Longitude of interpolated shoreline position in decimal degrees. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 36.243400 Range_Domain_Maximum: 35.414028 Attribute_Units_of_Measure: Decimal Degrees Attribute: Attribute_Label: slope Attribute_Definition: Mean of beach slopes. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.009347 Range_Domain_Maximum: 0.128267 Attribute_Units_of_Measure: Radians Attribute: Attribute_Label: mean res err Attribute_Definition: Mean residual error. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000342 Range_Domain_Maximum: 0.044822 Attribute_Units_of_Measure: Radians Attribute: Attribute_Label: 95% confidence Attribute_Definition: 95 percent confidence interval, equal to 2*mean_res_err. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000683 Range_Domain_Maximum: 0.089643 Attribute_Units_of_Measure: Radians Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey (USGS) Contact_Person: Jacquelyn R. Overbeck Contact_Address: Address_Type: mailing and physical Address: 600 4th Street Sourth City: Saint Petersburg State_or_Province: FL Postal_Code: 33701 Contact_Voice_Telephone: 727-502-8104 Contact_Facsimile_Telephone: 727-502-8001 Contact_Electronic_Mail_Address: joverbeck@usgs.gov Distribution_Liability: Although these data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described and/or contained herein. 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: text file File_Decompression_Technique: none Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7M906Q6/data/NC_beach_slopes/NC_Mean_slopes.txt Access_Instructions: Data is accessible online at https://doi.org/10.5066/F7M906Q6 Fees: none Metadata_Reference_Information: Metadata_Date: 20201013 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey (USGS) Contact_Person: Jacquelyn R. Overbeck 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: 727-502-8104 Contact_Facsimile_Telephone: 727-502-8001 Contact_Electronic_Mail_Address: joverbeck@usgs.gov Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time