Metadata: Identification_Information: Citation: Citation_Information: Originator: Joseph F. Terrano Originator: Kathryn E. Smith Originator: James G. Flocks Publication_Date: 20160125 Title: 2001 Vectorized Shoreline for Breton Island, Louisiana (Geographic, NAD83) Geospatial_Data_Presentation_Form: vector digital data (Polyline) Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/F7XS5SGM Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F7XS5SGM Description: Abstract: A first-surface elevation map was produced cooperatively from remotely sensed, geographically referenced elevation measurements collected by the U.S. Geological Survey (USGS) and National Aeronautics and Space Administration (NASA) on September 07-09, 2001. Elevation measurements were collected over the area using the NASA Airborne Topographic Mapper (ATM), a scanning lidar system that measures high-resolution topography of the land surface. The ATM system is deployed on a Twin Otter or P-3 Orion aircraft and incorporates a green-wavelength laser operating at pulse rates of 2 to 10 kilohertz. Measurements from the laser-ranging device are coupled with data acquired from inertial navigation system (INS) attitude sensors and differentially corrected global positioning system (GPS) receivers to measure topography of the surface at accuracies of +/-15 centimeters. This dataset contains vectorized shorelines created from data acquired from Breton Island, Louisiana. Shorelines were vectorized in ArcMap 10.2.2 so they could be used for area and shoreline change analysis, using the Digital Shoreline Analysis System (DSAS) Version 4.0. Purpose: Shoreline data are considered a crucial element in performing change analysis for erosion and accretion studies and for tracking shoreline movement over time; lidar data was downloaded and used to document the short and long-term changes of several barrier island systems in Louisiana. Vectorized shorelines, created from the Lidar data, provide an accurate and measurable change in shape, area, and shoreline movement over short and long-term periods. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20010907 Ending_Date: 20010909 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -89.181277 East_Bounding_Coordinate: -89.168168 North_Bounding_Coordinate: 29.497321 South_Bounding_Coordinate: 29.478429 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:de380c22-ab00-4a85-8a21-4fe7f818f597 Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Lidar Theme_Keyword: Coastal Theme_Keyword: Shoreline data Theme_Keyword: Shoreline Theme_Keyword: Shoreline map Theme_Keyword: Vectorization Theme_Keyword: Mean High Water Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: Oceans Theme_Keyword: Elevation Theme_Keyword: Environment Theme_Keyword: Boundaries Theme_Keyword: GeoscientificInformation Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords Theme_Keyword: mapping Theme_Keyword: shore Theme_Keyword: shoreline erosion Theme_Keyword: shoreline accretion Theme_Keyword: barrier island migration Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: coastal processes Theme_Keyword: erosion Theme_Keyword: shoreline accretion Theme_Keyword: barrier island migration Place: Place_Keyword_Thesaurus: None Place_Keyword: LA Place_Keyword: Breton Island Place_Keyword: Gulf of Mexico Place_Keyword: Louisiana Place_Keyword: USA Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: 2001 Access_Constraints: None Use_Constraints: The U.S. Geological Survey requests to be acknowledged as originator 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: Joseph F. Terrano Contact_Position: Researcher 1 Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: Florida Postal_Code: 33701 Country: US Contact_Voice_Telephone: (727) 502-8047 Contact_Facsimile_Telephone: (727) 502-8001 Contact_Electronic_Mail_Address: jterrano@usgs.gov Hours_of_Service: Monday through Friday, 9:00 a.m. to 5:00 p.m., Eastern Standard Time Data_Set_Credit: Funds for this report are part of project funds for the Louisiana Outer Coast Early Restoration Project, obtained by the natural resource trustees for the Deepwater Horizon Oil Spill, pursuant to the Framework for Early Restoration Addressing Injuries Resulting from the Deepwater Horizon Oil Spill executed April 20, 2011. USFWS is the project lead for the North Breton Island Barrier Island Restoration project. 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 Cross_Reference: Citation_Information: Originator: Martinez, L., O’Brien, S., Bethel, M., Penland, S., and Kulp, M. Publication_Date: 2009 Title: Louisiana Barrier Island Comprehensive Monitoring Program (BICM)   Volume 2: Shoreline Changes and Barrier Island Land Loss 1800’s‐2005 Online_Linkage: http://lacoast.gov/reports/project/3890772~1.pdf Cross_Reference: Citation_Information: Originator: Yates, Xan, Nayegandhi, Amar, Brock, J.C., Sallenger, A.H., Klipp, E.S., and Wright, C.W. Publication_Date: 2009 Title: ATM Coastal Topography--Louisiana, 2001: UTM Zone 16 (Part 2 of 2) Online_Linkage: https://pubs.usgs.gov/ds/465/index.html Cross_Reference: Citation_Information: Originator: Morton, R.A., Miller, T.L., and Moore, L.J. Publication_Date: 2008 Title: National Assessment of Shoreline Change: Part 1, Historical Shoreline Changes and Associated Coastal Land Loss Along the U.S. Gulf of Mexico Online_Linkage: https://pubs.usgs.gov/of/2004/1043/ Data_Quality_Information: Logical_Consistency_Report: Vectorized shorelines were checked to ensure they were one continuous line. Dangles (or extra line segments) were removed, as necessary. The shorelines were split into foreshore and backshore, based on a visual assessment. Completeness_Report: Shorelines that did not represent the main shoreline of Breton Island, such as the Chandeleur Islands or the Mississippi River Delta were removed. To ensure accuracy, edited shorelines were compared to those shown on the Breton Island, LA T-sheets created from 1869-2014, as a method for maintaining consistency between which islands were removed from each of the shoreline datasets. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2009 Title: ATM Coastal Topography--Louisiana, 2001: UTM Zone 16 (Part 2 of 2) Geospatial_Data_Presentation_Form: remote-sensing data Online_Linkage: https://pubs.usgs.gov/ds/465/index.html Source_Scale_Denominator: 1500 Type_of_Source_Media: Online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20010907 Ending_Date: 20010909 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: USGS DS 465 Source_Contribution: Lidar-derived elevations were used to identify the mean high water (MHW) location for shoreline delineation. Process_Step: Process_Description: The data were collected using a Twin Otter aircraft. Attached to the aircraft was the NASA Airborne Topographic Mapper (ATM) laser scanner, which collected the data using a green raster scanning laser. The raw and processed data are stored on hard drives and archived at the U.S. Geological Survey's office in St. Petersburg, FL, and the NASA office at Wallops Flight Facility in Virginia. The navigational data were processed at Wallops Flight Facility. The navigational and raw data were downloaded into the Advanced Lidar Processing System (ALPS), where it was converted from units of time to x,y,z points for elevation. The derived surface data can then be converted into raster data in the form of a digital elevation model (GeoTIFFs), which consists of cells containing elevation data. The input parameters for the random consensus filter (RCF) were as follows: grid cell size (buffer) = 8 meters by 8 meters; vertical tolerance (vertical width) = 20 centimeters. The variables measured by ATM are distance between aircraft and GPS satellites (meters), attitude information (roll, pitch, heading in degrees), scan angle (degrees), second of the epoch (seconds), and 1-nanosecond time-resolved return intensity waveform (digital counts). Z value is referenced to orthometric elevations derived from National Geodetic Survey Geoid Model, GEOID03. Raster data are projected to Universal Transverse Mercator (UTM), Zone 16, North American Datum (NAD) 1983, meters (m) coordinates. To vectorize the shorelines, the lidar digital elevation model (DEM) data were added to ArcMap 10.2.2. The symbology of the map was changed to classify the image into two elevation classes at 0.23 meters, delineating the location of the average mean high water (MHW) shoreline for the Breton Island area. The MHW elevation was determined by tide gauge measurements reported in Morton and others (2004). The two-class raster was then examined against aerial imagery and it was determined that this elevation provided a good approximation of the MHW shoreline via visual inspection of the wet/dry sand line. After the value of 0.23 was chosen, the ArcMap tool "Contour List" was used to create a shoreline. To remove any sharp edges from the shoreline the ArcMap tool "Smooth Line" was used. Using the Edit tool, any extra lines, overlapping lines, and remaining sharp angle lines were removed. If needed, some areas were hand digitized to ensure they matched the Lidar data, which was classified to 0.23. After the shoreline was edited, it was checked for any remaining errors using ArcMap 10.2.2 "Create Topology" tool. Five rules were added to ensure that the shorelines were matching up correctly. The five rules are that the shorelines must not have dangles, must not intersect (line), must not overlap (line), must not self-intersect (line), and must not self-overlap (line). Next, using the validate topology tool, error markers were added to the shoreline shapefile to show if there were any shorelines that needed to be fixed. These errors were fixed accordingly, to ensure that the shoreline was continuous and free of errors. Shorelines were then split at the northern most point and the southern most point to create a foreshore and backshore shoreline. In addition, the following fields were added to the shoreline’s attribute table and calculated as necessary: "UNCERTAINT" (double), "DATE_" (Text/10), "Shoreline_" (Text/20), and "Year" (Text/10). Process_Date: 20150601 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Joseph Terrano Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: Florida Postal_Code: 33701 Country: US Contact_Voice_Telephone: (727) 502-8047 Contact_Facsimile_Telephone: (727) 502-8001 Contact_Electronic_Mail_Address: jterrano@usgs.gov Hours_of_Service: Monday through Friday, 9:00 a.m. to 5:00 p.m., Eastern Standard Time Process_Step: Process_Description: Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. Process_Date: 20170313 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: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 4 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 16 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: D North American 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: Breton_Island_2001_Shoreline Entity_Type_Definition: Shapefile Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features Attribute: Attribute_Label: OBJECTID Attribute_Definition: Automatically assigned values used to identify features Attribute_Definition_Source: ESRI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 4 Attribute: Attribute_Label: Shape_Leng Attribute_Definition: Length of feature in internal units. Attribute_Definition_Source: Esri Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 18.952681 Range_Domain_Maximum: 5331.592899 Attribute: Attribute_Label: UNCERTAINT Attribute_Definition: A value representing the error associated with the imagery type that is used in the Digital Shoreline Analysis System (DSAS) statistical computations. Attribute_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1.9 Enumerated_Domain_Value_Definition: Automatically generated values used to identify features. Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: DATE_ Attribute_Definition: Date imagery was collected for Breton Island using the mm/dd/yyyy format. Imagery dates for data not representing Breton Island were excluded. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Date using the mm/dd/yyyy format Attribute: Attribute_Label: Shoreline_ Attribute_Definition: Shoreline classification used to separate foreshore and backshore shorelines. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Shorelines classified as "Fore" for foreshore and "Back" for backshore shorelines. Attribute: Attribute_Label: Year Attribute_Definition: 4-digit year in which the imagery was collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Single year in the YYYY format Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: James Flocks Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: Florida Postal_Code: 33701 Country: US Contact_Voice_Telephone: (727) 502-8012 Contact_Facsimile_Telephone: (727) 502-8001 Hours_of_Service: Monday through Friday, 9:00 a.m. to 5:00 p.m., Eastern Standard Time Contact_Instructions: All of this report is available online. Resource_Description: Breton_Island_2001_Shoreline.shp 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: ArcGIS shapefile Format_Information_Content: Shapefile containing 2001 vectorized shoreline for Breton Island, LA Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7XS5SGM/data/shapefiles/shorelines.zip Fees: None Metadata_Reference_Information: Metadata_Date: 20201013 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Joseph Terrano Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: Florida Postal_Code: 33701 Country: US Contact_Voice_Telephone: (727) 502-8047 Contact_Facsimile_Telephone: (727) 502-8001 Contact_Electronic_Mail_Address: jterrano@usgs.gov Hours_of_Service: Monday through Friday, 9:00 a.m. to 5:00 p.m., Eastern Standard Time Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_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 originator of the data in future products or derivative research.