Metadata: Identification_Information: Citation: Citation_Information: Originator: Kara S. Doran Originator: Justin J. Birchler Originator: Kirsten J. Bendik Publication_Date: 20210916 Title: Hurricane Laura Overwash Extents Geospatial_Data_Presentation_Form: vector digital data Larger_Work_Citation: Citation_Information: Originator: Kara S. Doran Originator: Justin J. Birchler Originator: Kirsten J. Bendik Publication_Date: 20190813 Title: Storm-Induced Overwash Extent Series_Information: Series_Name: U.S. Geological Survey data release Issue_Identification: doi:10.5066/P9BW6CG6 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9BW6CG6 Description: Abstract: The National Assessment of Coastal Change Hazards project exists to understand and predict storm impacts to our nation's coastlines. This geospatial dataset defines the alongshore extent of overwash sediments deposited along the Louisiana coast and attributed to coastal processes during [Atlantic Basin] Hurricane Laura, which made landfall in the U.S. on August 27, 2020. Purpose: To provide alongshore extents of overwash deposits caused by Hurricane Laura. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20200827 Ending_Date: 20200831 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -93.856172 East_Bounding_Coordinate: -92.575239 North_Bounding_Coordinate: 29.776068 South_Bounding_Coordinate: 29.581307 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:0027d998-6dac-49d0-a247-58eda7736cdf 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: Coastal and Marine Geology Program Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMGP Theme_Keyword: CMHRP Theme_Keyword: SPCMSC Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme_Keyword: environment Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: hazards Theme_Keyword: marine geology Theme_Keyword: ocean sciences Theme_Keyword: coastal processes Theme_Keyword: sand deposits Theme_Keyword: sedimentation Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: Louisiana 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 1909 (Build 18363.1500); Esri ArcGIS 10.7.1; Global Mapper 21.1 Cross_Reference: Citation_Information: Originator: Birchler, J.J., Doran, K.S., Long, J.W., and Stockdon, H.F. Publication_Date: 2019 Title: Hurricane Matthew: Predictions, Observations, and an Analysis of Coastal Change Series_Information: Series_Name: U.S. Geological Survey Open-File Report 2019-1095 Issue_Identification: doi:10.3133/ofr20191095 Publication_Information: Publication_Place: St. Petersburg, Florida Publisher: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Online_Linkage: https://doi.org/10.3133/ofr20191095 Data_Quality_Information: Logical_Consistency_Report: Data were QA/QC'd by an independent researcher using USGS oblique aerial photography. 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: No formal horizontal positional accuracy tests were conducted. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: No formal positional vertical accuracy tests were conducted Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division Publication_Date: 20200827 Title: 2020 NOAA NGS Emergency Response Imagery: Hurricane Laura Publication_Information: Publication_Place: Silver Spring, MD Publisher: NOAA's Ocean Service, National Geodetic Survey (NGS) Online_Linkage: https://storms.ngs.noaa.gov/storms/laura/index.html Type_of_Source_Media: online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20200827 Ending_Date: 20200831 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: NOAA post-storm Source_Contribution: Post-storm imagery used to determine overwash extent. Source_Information: Source_Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division Publication_Date: 201601 Title: Aerial Photography: NOAA Oblique Imagery Publication_Information: Publication_Place: Silver Spring, MD Publisher: NOAA's Ocean Service, National Geodetic Survey (NGS) Online_Linkage: http://geodesy.noaa.gov/storm_archive/storms/index.shtml Type_of_Source_Media: online digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 201501 Ending_Date: present Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: NOAA pre-storm Source_Contribution: Pre-storm imagery used to determine whether overwash occurred. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: Unpublished material Title: Hurricane Laura oblique aerial photography Type_of_Source_Media: aerial photos Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20200827 Ending_Date: 20200831 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USGS obliques Source_Contribution: USGS low-angle oblique photographs of the coast taken after the storm (Hurricane Laura) were used to verify that areas identified as overwash were indeed overwash and not dune erosion and scarping. In many instances, dune erosion and overwash leave sand deposits that appear similar in high-angle imagery. Process_Step: Process_Description: Overwash extents were delineated, by hand, using ArcMap (10.7.1) and comparisons of pre-storm and post-storm imagery. In order to determine whether overwash had occurred, USGS staff searched for new sand deposits over roads, marshes and vegetation (Birchler and others, 2019). Process_Date: 20200903 Process_Step: Process_Description: Overwash extents were QA/QC'd by an independent, second researcher using low-angle oblique photography to determine if any features were erroneously identified as overwash but were actually dune erosion (Birchler and others, 2019). Process_Date: 20201215 Process_Step: Process_Description: The final .shp file was copied and converted to a .kmz file (Global Mapper 21.1) for use with non-proprietary software. Process_Date: 20210223 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: 44 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 15 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -93.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.6096 Ordinate_Resolution: 0.6096 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Laura_Overwash_Extent.shp Entity_Type_Definition: Overwash extents for Hurricane Laura. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: FID Attribute_Definition: Overwash segment identification number. Attribute_Definition_Source: Esri Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 43 Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: TYPE Attribute_Definition: The type of substrate in which the overwash extent deposited onto. If the field is left blank, the overwash extent did not cover any of the substrates defined below. Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ROAD Enumerated_Domain_Value_Definition: The substrate onto which overwash sediments are deposited. Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: SHAPE_Leng Attribute_Definition: Length of line segment, in meters. Attribute_Definition_Source: Esri Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 9.256722 Range_Domain_Maximum: 14755.75442 Attribute_Units_of_Measure: meters 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 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: SHP (ArcGIS shapefile), KMZ File_Decompression_Technique: The data download file is compressed and must be unzipped using software such as WinZip, 7Zip, etc. before use. Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9BW6CG6/data/Laura_Overwash_Extent.zip Access_Instructions: None Fees: None Metadata_Reference_Information: Metadata_Date: 20210916 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