Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2015 Title: Transect Lines for Assateague Island, Maryland and Virginia Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: 928 Publication_Information: Publication_Place: St. Petersburg, Fla. Publisher: U.S. Geological Survey Online_Linkage: https://pubs.usgs.gov/ds/0928/ Description: Abstract: Assessing the physical change to shorelines and wetlands is critical in determining the resiliency of wetland systems that protect adjacent habitat and communities. The wetland and back-barrier shorelines of Assateague Island, located in Maryland and Virginia, changed as a result of wave action and storm surge that occurred during Hurricane Sandy, which made landfall on October 29, 2012. The impact of Hurricane Sandy will be assessed and placed in its historical context to understand the future vulnerability of wetland systems. Making these assessments will rely on data extracted from current and historical resources such as maps, aerial photographs, satellite imagery, and lidar elevation data, which document physical changes over time. This USGS Data Series publication includes several open-ocean shorelines, back-island shorelines, back-island shoreline points, sand area polygons, and sand lines for Assateague Island that were extracted from ortho imagery (ortho aerial photography)dated from April 12, 1989 to September 5, 2013. Purpose: This data set consists of digital transect lines that cross Assateague Island at 20 meter (m) intervals. They were created using off-shore, reference baselines that approximate the trend of the open-ocean shoreline of the island, and ArcGIS 10.1 and Digital Shoreline Analysis System (DSAS) software (USGS Open-File Report 2008-1278), which creates transects lines perpendicular to the baselines. The back-island shorelines and shoreline points included in this data series are based on the intersection of back-island shorelines and transect lines. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2015 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -75.425895 East_Bounding_Coordinate: -75.077115 North_Bounding_Coordinate: 38.357579 South_Bounding_Coordinate: 37.842700 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:4bb5fd43-f6a6-4f23-aaa5-35875624e677 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: location Theme_Keyword: oceans Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geology Theme_Keyword: geomorphology Theme_Keyword: unconsolidated deposits Theme_Keyword: field inventory and monitoring Theme_Keyword: coastal processes Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: transects Theme_Keyword: shore normal Theme: Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD) Theme_Keyword: OCEAN > COASTAL PROCESSES > BARRIER ISLANDS Theme_Keyword: COASTAL PROCESSES > BEACHES Theme_Keyword: DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR Place: Place_Keyword_Thesaurus: Geogrphic Names Information System Place_Keyword: Assateague Island Place_Keyword: Maryland Place_Keyword: Virginia Place_Keyword: United States Place_Keyword: Worcester Place_Keyword: Accomack Place: Place_Keyword_Thesaurus: None Place_Keyword: National Seashore Access_Constraints: None. Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Coastal and Marine Geology Program as the originator of these data in future products or derivative research. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Kristy Guy Contact_Address: Address_Type: mailing and physical Address: 600 4th St. S. City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Facsimile_Telephone: 727-502-8181 Contact_Electronic_Mail_Address: kguy@usgs.gov Hours_of_Service: Monday through Friday 9:00 AM to 5:00 PM (Eastern Time) Data_Set_Credit: Acknowledgment of the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, as a data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices. Sharing of new data layers developed directly from these data would also be appreciated by the U.S. Geological Survey staff. Users should be aware that comparisons with other datasets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in photointerpretation, mapping conventions, and digital processes over time. These data are not legal documents and are not to be used as such. Native_Data_Set_Environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.2.3552. Data_Quality_Information: Logical_Consistency_Report: The transects are spaced at 20 m intervals and created from baselines that approximate the trend of the open-ocean island shoreline. They are numbered sequentially from south to north in the "TransOrder" field of the attribute. Completeness_Report: Complete. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: These transect lines do not correspond to any real-world features. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: USGS Publication_Date: 2014 Title: USGS Assateague Island Baselines Geospatial_Data_Presentation_Form: vector digital data Publication_Information: Publication_Place: St. Petersburg, Fla. Publisher: USGS Type_of_Source_Media: digital Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2015 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: asis_baselines_ln_utm18.shp Source_Contribution: Reference lines used to produce transects. Process_Step: Process_Description: Using Digital Shoreline Analysis System (DSAS) and ArcMap 10.1 software, transects were created from baselines at 20 m intervals. The resulting transect feature class was exported to a shapefile. Source_Used_Citation_Abbreviation: Baselines Process_Date: 2014 Source_Produced_Citation_Abbreviation: asis_transects_ln_20m_utm18.shp Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Contact_Address: Address_Type: mailing and physical Address: 600 4th St. S. City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Facsimile_Telephone: 727-502-8181 Hours_of_Service: Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) Contact_Instructions: If unable to reach the contact by telephone, please leave a voice message. Process_Step: Process_Description: Keywords section of metadata optimized by adding theme keyword thesauri and associated keywords. Process_Date: 20180322 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Arnell S. Forde Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: aforde@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: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 3024 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 18 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -75.0 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: meter Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System of 1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: asis_transects_ln_20m_utm18.shp Entity_Type_Definition: Transect lines used identify data collection points on Assateague Island. Entity_Type_Definition_Source: USGS 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: Coordinates defining the features. Attribute: Attribute_Label: TransOrder Attribute_Definition: Unique sequential number automatically assigned by DSAS software. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 10400 Attribute: Attribute_Label: StartX Attribute_Definition: Transect starting point X coordinate in North American Datum of 1983, Geodetic Reference System of 1980, Universal Transverse Mercator zone 18N (NAD83 GRS1980 UTM z18N) in meters. Attribute_Definition_Source: NAD83 GRS1980 UTM z18N Attribute_Domain_Values: Unrepresentable_Domain: varying value range Attribute: Attribute_Label: StartY Attribute_Definition: Transect starting point Y coordinate in NAD83 GRS1980 UTM z18N in meters. Attribute_Definition_Source: NAD83 GRS1980 UTM z18N Attribute_Domain_Values: Unrepresentable_Domain: varying value range Attribute: Attribute_Label: EndX Attribute_Definition: Transect ending point X coordinate in NAD83 GRS1980 UTM z18N in meters. Attribute_Definition_Source: NAD83 GRS1980 UTM z18N Attribute_Domain_Values: Unrepresentable_Domain: varying value range Attribute: Attribute_Label: EndY Attribute_Definition: Transect ending point Y coordinate in NAD83 GRS1980 UTM z18N in meters. Attribute_Definition_Source: NAD83 GRS1980 UTM z18N Attribute_Domain_Values: Unrepresentable_Domain: varying value range Attribute: Attribute_Label: Azimuth Attribute_Definition: Direction, expressed in the angular distance from north, of the transect line from its starting point to its ending point, in degrees. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 359.99 Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Kristy Guy Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, Fla. Contact_Position: GIS/RS Analyst Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Hours_of_Service: Monday-Friday, 9:00-5:00 Eastern Time Resource_Description: DS 928 Distribution_Liability: Although these data were 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: ArcGIS shapefile Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://pubs.usgs.gov/ds/0928/downloads/baselines_transects.zip Fees: None if obtained online; otherwise prices vary. Ordering_Instructions: Publications are available from USGS Information Services, Box 25286, Federal Center, Denver, CO 80225-0046 (telephone: 1-888-ASK-USGS, e-mail: infoservices@usgs.gov). Metadata_Reference_Information: Metadata_Date: 20201013 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Contact_Person: Kristy Guy Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Facsimile_Telephone: 727-502-8181 Contact_Electronic_Mail_Address: kguy@usgs.gov Hours_of_Service: Monday through Friday 9:00 AM to 5:00 PM (Eastern Time) Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None. Metadata_Use_Constraints: None. Metadata_Security_Information: Metadata_Security_Classification_System: None. Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: NONE