Metadata: Identification_Information: Citation: Citation_Information: Originator: Ann E. Gibbs Publication_Date: 20201204 Title: Digital Shoreline Analysis System (DSAS) version 5.0 transects with shoreline rate change calculations at Barter Island Alaska, 1947 to 2020 Geospatial_Data_Presentation_Form: Vector Digital Data Set (Polyline) Series_Information: Series_Name: data release Issue_Identification: DOI: 10.5066/P9CRBC5I Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9CRBC5I Online_Linkage: https://www.sciencebase.gov/catalog/item/5fb716ded34eb413d5e143dd Larger_Work_Citation: Citation_Information: Originator: Ann E. Gibbs Originator: Benjamin M. Jones Originator: Bruce M. Richmond Publication_Date: 2020 Title: A GIS compilation of vector shorelines and coastal bluff edge positions, and associated rate-of-change data for Barter Island, Alaska Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9CRBC5I Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9CRBC5I Description: Abstract: This dataset consists of rate-of-change statistics for the shorelines at Barter Island, Alaska for the time period 1947 to 2020. Rate calculations were computed within a GIS using the Digital Shoreline Analysis System (DSAS) version 5.0, an ArcGIS extension developed by the U.S. Geological Survey. A reference baseline was used as the originating point for the orthogonal transects cast by the DSAS software. The transects intersect each shoreline establishing measurement points, which are then used to calculate shoreline change rates. Purpose: These data are part of a series of data quantifying rates and patterns of shoreline change and coastal permafrost bluff retreat from 1947 to 2020 at Barter Island. Alaska. Supplemental_Information: Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the dataset in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19470729 Ending_Date: 20200710 Currentness_Reference: ground condition. Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -143.707127369 East_Bounding_Coordinate: -143.621379794 North_Bounding_Coordinate: 70.136186014 South_Bounding_Coordinate: 70.131006408 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: environment Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Physical habitats and geomorphology Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: shoreline accretion Theme_Keyword: coastal erosion Theme_Keyword: permafrost Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: coastal processes Theme_Keyword: geomorphology Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMHRP Theme_Keyword: Pacific Coastal and Marine Science Center Theme_Keyword: PCMSC Theme_Keyword: Digital Shoreline Analysis System Theme_Keyword: DSAS Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:5fb716ded34eb413d5e143dd Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: North Slope Place_Keyword: Arctic National Wildlife Refuge Place_Keyword: Arctic Ocean Place_Keyword: Barter Island Place_Keyword: North Slope Place_Keyword: State of Alaska Access_Constraints: None Use_Constraints: USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: Mailing and Physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Native_Data_Set_Environment: Environment as of Metadata Creation: Microsoft [Unknown] Version 6.2 (Build 9200); Esri ArcGIS 10.7.1 (Build 11595) Service Pack N/A (Build N/A) Cross_Reference: Citation_Information: Originator: Ann E. Gibbs Originator: Bruce M. Richmond Publication_Date: 2015 Title: National assessment of shoreline change—Historical shoreline change along the north coast of Alaska, U.S.–Canadian border to Icy Cape Other_Citation_Details: Gibbs, A.E., and Richmond, B.M., 2015, National assessment of shoreline change—Historical shoreline change along the north coast of Alaska, U.S.–Canadian border to Icy Cape: U.S. Geological Survey Open-File Report 2015–1048, 96 p. Online_Linkage: https://doi.org/10.3133/ofr20151048 Cross_Reference: Citation_Information: Originator: Emily A. Himmelstoss Originator: Rachel E. Henderson Originator: Meridith G. Kratzmann Originator: Amy S. Farris Publication_Date: 2018 Title: Digital Shoreline Analysis System (DSAS) version 5.0 user guide Other_Citation_Details: Himmelstoss, E.A., Henderson, R.E., Kratzmann, M.G., and Farris, A.S., 2018, Digital Shoreline Analysis System (DSAS) version 5.0 user guide: U.S. Geological Survey Open-File Report 2018–1179. Online_Linkage: https://doi.org/10.3133/ofr20181179 Cross_Reference: Citation_Information: Originator: Ann E. Gibbs Originator: Matt Nolan Originator: Bruce M. Richmond Originator: Alexander G. Snyder Originator: Li H. Erikson Publication_Date: 2019 Title: Assessing patterns of annual change to permafrost bluffs along the North Slope coast of Alaska using high-resolution imagery and elevation models Other_Citation_Details: Gibbs, A.E., Nolan, M., Richmond, B.M., Snyder, A.G., Erikson, L.H., 2019, Assessing patterns of annual change to permafrost bluffs along the North Slope coast of Alaska using high-resolution imagery and elevation models. Geomorphology, v. 336, p. 152-164. Online_Linkage: https://doi.org/10.1016/j.geomorph.2019.03.029 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The attributes in this layer is based on the requirements for use within the Digital Shoreline Analysis System (DSAS) software (Himmelstoss and others, 2018). The data have been quality checked. Logical_Consistency_Report: All polylines have a unique identification attribute (FID). This field is used by the Digital Shoreline Analysis System (DSAS) to measure shoreline change. Completeness_Report: This dataset contains transects automatically generated by the DSAS software application that can be used to calculate shoreline rate-of-change statistics where shoreline position data are available. Rate of change statistics were calculated only where transects intersected 6 shoreline dates selected to provide long-term rate of change rate over the entire date range and study area. Where transects did not intersect all 6 shoreline dates selected for this long-term change-rate analysis, rate of change statistics were not calculated and statistical attributes have a value of -9999. This transect dataset however can be used to calculate statistics for any different combination of years as required by the user. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The transect serves as a reference point along which measurements are calculated by the Digital Shoreline Analysis System (DSAS) software. It does not correspond to any real-world feature. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The transect serves as a reference point along which measurements are calculated by the Digital Shoreline Analysis System (DSAS) software. It does not correspond to any real-world feature. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Ann E. Gibbs Publication_Date: 2020 Title: Offshore baseline generated to calculate shoreline change rates at Barter Island, Alaska Geospatial_Data_Presentation_Form: shapefile Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9CRBC5I Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2020 Source_Currentness_Reference: publication year Source_Citation_Abbreviation: DSAS baseline Source_Contribution: DSAS baseline used for calculation of shoreline change rates. Source_Information: Source_Citation: Citation_Information: Originator: Ann E. Gibbs Publication_Date: 2020 Title: Historical shoreline positions at Barter Island, Alaska for the years spanning 1947 to 2020 Geospatial_Data_Presentation_Form: Vector Digital Data Set (Polyline) Publication_Information: Publication_Place: online Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9CRBC5I Type_of_Source_Media: Digital and/or Hardcopy Resources Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19470729 Ending_Date: 20200710 Source_Currentness_Reference: ground condition at time data were collected. Source_Citation_Abbreviation: Historical shoreline positions Source_Contribution: Historical shoreline positions were used to calculate rate-of-change statistics. Process_Step: Process_Description: Transect features were generated using DSAS v5.0in ArcMap v10.7. Parameters Used: baseline, transect spacing=10 meters, transect length=variable 500-1500 m, cast direction=onshore, baseline location=offshore, cast method=smoothed, smoothing distance=300 meters. For additional details on these parameters, please see the DSAS help file distributed with the DSAS software. Process_Date: 2020 Process_Step: Process_Description: Rate calculations were performed using DSAS v5.0 in ArcMap v10.7 on selected shoreline features to derive a long-term (greater than 70 years) change rate based on data availability. Parameters Used: shoreline layer=BTI_Shoreline_19472020, shoreline date field=DATE_, shoreline uncertainty field name=UNCY, the default accuracy= 0 meters, stats calculations=all, confidence interval=90%. All statistics were calculated. Process_Date: 2020 Process_Step: Process_Description: Output transect feature classes with rate-of-change statistics were exported to a shapefile (BarterIsland_ShoreTransect_ChangeRates_1940to2020.shp). The attribute Calc_Yrs was added and populated. Process_Date: 2020 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: 1902 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.0 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: 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: Attribute Table Entity_Type_Definition: Table containing attribute information associated with the data set. Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: FID Attribute_Definition: The object identification field is automatically created and maintained by ArcGIS. It establishes a unique ID for each row in the attribute table. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 1901 Attribute: Attribute_Label: Shape Attribute_Definition: The geometry field is automatically created and maintained by ArcGIS. It provides a definition of the feature type (point, line, polygon). Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Polyline Enumerated_Domain_Value_Definition: ESRI polyline shapefile Enumerated_Domain_Value_Definition_Source: ESRI Attribute: Attribute_Label: TransectID Attribute_Definition: A permanent and unique identification number for each transect in the output rates table calculated by DSAS. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 1914 Attribute: Attribute_Label: BaselineID Attribute_Definition: Values in this field correlate to the baseline attribute field “ID” and are assigned by DSAS to identify the baseline segment used to generate the measurement transect. Baseline segments assigned an ID=0 are ignored by DSAS, and no transects will be cast along those line segments. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 4 Attribute: Attribute_Label: GroupID Attribute_Definition: Values in this field correlate to the optional baseline attribute field “DSAS_group” (Group_) and are assigned by DSAS if selected by user. This field is used to aggregate sections of the coast into groups. All transects within a group will have average summary statistics in the DSAS summary report. Refer to the baseline field requirements in section 5.3.3 and a description of the summary report in section 9 for more information. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 4 Attribute: Attribute_Label: TransOrder Attribute_Definition: Assigned by DSAS on the basis of transect order along the baseline or baselines. If the user manually adds transects to the file in an edit session, they will be added to the end of the transect attribute table and given a new TransID (ObjectID). However, TransOrder will be updated to reflect the position of the new transect with respect to the other transects along the baseline. This field provides the user with a method to sort transect attribute data from the start of the baseline segment with an ID=1 and increment by one alongshore to the end of the final baseline segment. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 1915 Attribute: Attribute_Label: Azimuth Attribute_Definition: Used to record the azimuth of the transect measured in degrees clockwise from north. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 112.56 Range_Domain_Maximum: 204.44 Attribute: Attribute_Label: ShrCount Attribute_Definition: The total number of shorelines intersected by the transect and used for change analysis. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 6 Attribute: Attribute_Label: TCD Attribute_Definition: The “total cumulative distance” (TCD) is the measure (in meters) along shore from the start of the baseline segment with an ID=1 and measured sequentially alongshore to the end of the final baseline segment. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 10 Range_Domain_Maximum: 37955.32 Attribute_Units_of_Measure: Meters Attribute: Attribute_Label: SHAPE_Leng Attribute_Definition: Length of transect in meter units, assuming data were properly projected in a meter-based coordinate system. This field is automatically generated and maintained when data are within a geodatabase. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 230.18 Range_Domain_Maximum: 1500 Attribute: Attribute_Label: SCE Attribute_Definition: The shoreline change envelope (SCE) reports a distance, not a rate. The SCE is the distance between the shoreline farthest from and closest to the baseline at each transect. This represents the total change in shoreline movement for all available shoreline positions and is not related to their dates. Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.55 Range_Domain_Maximum: 886.98 Attribute_Units_of_Measure: Meters Attribute: Attribute_Label: NSM Attribute_Definition: The net shoreline movement (NSM) reports the distance between the oldest and youngest shorelines for each transect. This represents the total distance between the oldest and youngest shorelines. If this distance is divided by the number of years elapsed between the two shoreline positions, the result is the End Point Rate (EPR). Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -471.73 Range_Domain_Maximum: 872.44 Attribute_Units_of_Measure: Meters Attribute: Attribute_Label: EPR Attribute_Definition: End-point rate Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -6.47 Range_Domain_Maximum: 11.96 Attribute: Attribute_Label: EPRunc Attribute_Definition: Uncertainty of the end point rate Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.23 Range_Domain_Maximum: 0.23 Attribute: Attribute_Label: LRR Attribute_Definition: Linear regression rate Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -6.28 Range_Domain_Maximum: 11.9 Attribute_Units_of_Measure: Meters/year Attribute: Attribute_Label: LR2 Attribute_Definition: R-squared of linear regression Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.98 Attribute: Attribute_Label: LSE Attribute_Definition: Standard error of linear regression Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.61 Range_Domain_Maximum: 174.57 Attribute: Attribute_Label: LCI90 Attribute_Definition: 90% confidence interval of linear regression Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.02 Range_Domain_Maximum: 5.95 Attribute: Attribute_Label: WLR Attribute_Definition: Weighted linear regression rate Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -7.73 Range_Domain_Maximum: 13.13 Attribute: Attribute_Label: WR2 Attribute_Definition: R-squared of weighted linear regression Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.98 Attribute: Attribute_Label: WSE Attribute_Definition: Standard error of weighted linear regression Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.11 Range_Domain_Maximum: 27.24 Attribute: Attribute_Label: WCI90 Attribute_Definition: 90% confidence interval of weighted linear regression Attribute_Definition_Source: Himmelstoss and others (2018) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.03 Range_Domain_Maximum: 8.09 Attribute: Attribute_Label: Calc_Yrs Attribute_Definition: This field indicates the DATE_ of shorelines lines used in the rate-calculation analysis. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Multiple unique values Overview_Description: Entity_and_Attribute_Overview: The entity and attribute information provided here describes the tabular data associated with the data set. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the data set. Entity_and_Attribute_Detail_Citation: The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. 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 - ScienceBase Contact_Address: Address_Type: Mailing and Physical Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: These data are available in shapefile format contained in a single zip file, which also includes CSDGM FGDC-compliant metadata. Distribution_Liability: Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Vector Digital Data Set (Polyline) Format_Version_Number: ArcGIS Desktop 10.7 Format_Specification: Esri polyline shapefile Format_Information_Content: Zip file contains shoreline change rates measured along shore perpendicular transects at Barter Island, Alaska. File_Decompression_Technique: Use WinZip or equivalent. Transfer_Size: 2 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5fb716ded34eb413d5e143dd Network_Resource_Name: https://doi.org/10.5066/P9CRBC5I Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of data and metadata. The second link points to a landing page for the entire data release. Fees: None. Technical_Prerequisites: This zip file contains data available in Environmental Systems Research Institute (Esri) polyline shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from Esri at www.esri.com. Metadata_Reference_Information: Metadata_Date: 20201204 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: Mailing and Physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998