Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2018 Title: 2013 profile-derived mean high water shorelines of the north shore of Martha's Vineyard, MA used in shoreline change analysis Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9O7S72B Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://doi.org/10.5066/P9O7S72B Online_Linkage: https://www.sciencebase.gov/catalog/item/5bd865a3e4b0b3fc5ce9d9f0 Larger_Work_Citation: Citation_Information: Originator: Emily A. Himmelstoss Originator: Amy S. Farris Originator: Kathryn M. Weber Publication_Date: 2018 Title: Massachusetts Shoreline Change Project: A GIS Compilation of Vector Shorelines for the 2018 update Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9O7S72B Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested citation: Himmelstoss, E.A., Farris, A.S., and Weber, K.M., 2018, Massachusetts shoreline change project—A GIS compilation of vector shorelines for the 2018 update: U.S. Geological Survey data release, https://doi.org/10.5066/P9O7S72B. Online_Linkage: https://doi.org/10.5066/P9O7S72B Online_Linkage: https://www.sciencebase.gov/catalog/item/5bcde5dce4b0f0758fc178d0 Description: Abstract: The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast. The shoreline position and change rate are used to inform management decisions regarding the erosion of coastal resources. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates at 40-meter intervals along ocean-facing sections of the Massachusetts coast. In 2013 two oceanfront shorelines for Massachusetts were added using 2008-2009 color aerial orthoimagery and 2007 topographic lidar datasets obtained from NOAA's Ocean Service, Coastal Services Center. This 2018 update includes two new mean high water (MHW) shorelines for the Massachusetts coast extracted from lidar data collected between 2010-2014. The first new shoreline for the state includes data from 2010 along the North Shore and South Coast from lidar data collected by the U.S. Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX). Shorelines along the South Shore and Outer Cape are from 2011 lidar data collected by the U.S. Geological Survey's (USGS) National Geospatial Program Office. Shorelines along Nantucket and Martha’s Vineyard are from a 2012 U.S. Army Corps of Engineers Post Sandy Topographic lidar survey. The second new shoreline for the North Shore, Boston, South Shore, Cape Cod Bay, Outer Cape, South Cape, Nantucket, Martha’s Vineyard, and South Coast west of Buzzards Bay is from 2013-2014 lidar data collected by the U.S. Geological Survey's (USGS) Coastal and Marine Geology Program. Shorelines were extracted from these lidar surveys using several different methods dependent on the location of the shoreline and whether or not wave data were available. Purpose: Shoreline positions serve as easily understood features that can be used to describe the movement of beaches through time. This particular shoreline dataset is a mean high water (MHW) datum-based shoreline extracted using a profile method. These data are used in conjunction with other shoreline files to calculate rates of shoreline change. Accompanying this dataset is an uncertainty table that quantifies the measurement and positional errors associated with this shoreline. See the first process step for essential information to understand these data and other shoreline change related data. Supplemental_Information: Cross-referenced citations are applicable to the dataset as a whole. Additional citations are located within individual process steps that pertain specifically to the method described in that step. When this datum-based MHW shoreline is compared to historical proxy-based high water line (HWL) shorelines (e.g., when calculating shoreline change rates), the result may be affected by an offset between the two types of shorelines. Ruggiero and List (2009, citation in second process step of this metadata file) showed that for open-ocean sandy beaches, historical, proxy-based HWL shorelines tend to be landward of datum-based MHW shorelines. While this proxy-datum bias was estimated and corrected for in other datasets in this project, it has not been calculated for these data (hence the “NB” for no bias in the filename). Since there is no nearby buoy from which to gather wave data, the run-up equations used to estimate a proxy-datum bias value cannot be run. However, this shoreline extent tends to have lower wave energy than an open-ocean beach, which would result in less run-up and yield a smaller offset between a proxy-based HWL shoreline and this datum-based MHW shoreline than would occur along open-ocean coasts. This shoreline data has an associated uncertainty table that quantifies the measurement and positional errors associated with this lidar shoreline. The dataset contains a common attribute with the M-values stored for the lidar data within the MarthasVineyard_pShorelineNB_2013_uncertainty.dbf. These data are used in conjunction with the shoreline file to calculate rates of shoreline change. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20131128 Currentness_Reference: ground condition of the data these shorelines are based on. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -70.773335 East_Bounding_Coordinate: -70.451126 North_Bounding_Coordinate: 41.481198 South_Bounding_Coordinate: 41.350675 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:5bd865a3e4b0b3fc5ce9d9f0 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme_Keyword: environment Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: USGS Theme_Keyword: U.S. Geological Survey Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: Massachusetts Coastal Zone Management Theme_Keyword: MA CZM Theme_Keyword: National Assessment of Shoreline Change Project Theme_Keyword: Massachusetts Shoreline Change Project Theme_Keyword: DSAS Theme_Keyword: Digital Shoreline Analysis System Theme_Keyword: Shoreline Theme_Keyword: Shoreline Change Theme_Keyword: Mean High Water Theme_Keyword: MHW Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: coastal processes Theme_Keyword: geospatial datasets Place: Place_Keyword_Thesaurus: None Place_Keyword: United States Place_Keyword: Atlantic Coast Place_Keyword: New England Place_Keyword: Massachusetts Place_Keyword: Martha's Vineyard 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 as the originator of the dataset. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Emily A. Himmelstoss Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2262 Contact_Facsimile_Telephone: 508-547-2310 Contact_Electronic_Mail_Address: ehimmelstoss@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/5bd865a3e4b0b3fc5ce9d9f0/?name=MarthasVineyard_pShorelineNB_2013_browse.png Browse_Graphic_File_Description: Map view of data Browse_Graphic_File_Type: PNG Native_Data_Set_Environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5.0.6491 Cross_Reference: Citation_Information: Originator: E.R. Thieler Originator: T.L. Smith Publication_Date: 2013 Title: Massachusetts Shoreline Change Mapping and Analysis Project, 2013 Update Series_Information: Series_Name: Open-File Report Issue_Identification: 2012-1189 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://pubs.usgs.gov/of/2012/1189/ Cross_Reference: Citation_Information: Originator: Theresa L. Smith Originator: Emily A. Himmelstoss Originator: E. Robert Thieler Publication_Date: 2013 Title: Massachusetts Shoreline Change Project: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the 2012 update Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2012-1183 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://pubs.usgs.gov/of/2012/1183/ Cross_Reference: Citation_Information: Originator: E. Robert Thieler Originator: James F. O'Connell Originator: Courtney A. Schupp Publication_Date: 2001 Title: The Massachusetts Shoreline Change Project: 1800s to 1994 Technical Report Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://web.whoi.edu/seagrant/wp-content/uploads/sites/24/2015/01/WHOI-T-01-001-Thieler-E.R.-The-Mass.-Shorel.pdf Online_Linkage: https://www.mass.gov/service-details/massachusetts-shoreline-change-project Cross_Reference: Citation_Information: Originator: Emily A. Himmelstoss Originator: Meredith G. Kratzmann Originator: Cheryl J. Hapke Originator: E. Robert Thieler Originator: Jeffrey H. List Publication_Date: 2011 Title: The National Assessment of Shoreline Change: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the New England and Mid-Atlantic Coasts Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2010-1119 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://pubs.usgs.gov/of/2010/1119/ Cross_Reference: Citation_Information: Originator: Kathryn M. Weber Originator: Jeffrey H. List Originator: Karen L.M. Morgan Publication_Date: 2005 Title: An operational mean high water datum for determination of shoreline position from topographic lidar data Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1027 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://pubs.usgs.gov/of/2005/1027/ Cross_Reference: Citation_Information: Originator: Emily A. Himmelstoss Originator: Amy S. Farris Originator: Rachel E. Henderson Originator: Meredith G. Kratzmann Originator: Ayhan Ergul Originator: Ouya Zhang Originator: Jessica L. Zichichi Publication_Date: 2018 Title: Digital Shoreline Analysis System (version 5.0): U.S. Geological Survey software Series_Information: Series_Name: software release Issue_Identification: version 5.0 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P91MNNSN Online_Linkage: https://code.usgs.gov/usgs/dsas/ Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The attributes are based on the requirements of the Digital Shoreline Analysis System (DSAS) software, please refer to cross reference for citation. Logical_Consistency_Report: Adjacent shoreline segments do not overlap and are not necessarily continuous. Shorelines were displayed on top of Esri World Imagery in map view to verify that no erroneous data were included. Completeness_Report: Although not a continuous shoreline for the north shore of Martha’s Vineyard, this shoreline file is complete. It contains all shoreline segments where shoreline position data could be extracted using the profile method. This data set does not include any proxy-datum bias information because wave data were unavailable in this region. These data adequately represented the shoreline position at the time of the survey. Shorelines derived using a different method could potentially fill in the gaps. Remaining gaps in these data, if applicable, are a consequence of non-existing data or existing data that did not meet quality assurance standards. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Each MHW shoreline point extracted using the profile method has an uncertainty associated with it. This uncertainty includes three components: 1) the 95% confidence interval on the linear regression estimate of the shoreline position; 2) the uncertainty associated with the elevation of the raw lidar data which is stated as 0.1 m RMS in the lidar metadata; 3) the uncertainty due to extrapolation if the shoreline point was determined by extrapolation. These three components of uncertainty were then added in quadrature, yielding a total error for each shoreline point which is stored in the shoreline uncertainty DBF file associated with these data. Averaging these points for this region results in a positional uncertainty of plus or minus 1.57 meters. 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) Originator: Woolpert Publication_Date: 20150615 Title: 2013-2014 U.S. Geological Survey CMGP Lidar: Post Sandy (MA, NH, RI) Geospatial_Data_Presentation_Form: tabular digital data Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA's Ocean Service, Office for Coastal Management (OCM) Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=4914 Online_Linkage: https://coast.noaa.gov/htdata/lidar1_z/geoid12b/data/4914 Online_Linkage: https://coast.noaa.gov/dataviewer Online_Linkage: https://coast.noaa.gov/htdata/lidar1_z/geoid12b/data/4914/supplemental/ne2013_2014_usgs_postsandy_m4914.kmz Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20131116 Ending_Date: 20141227 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2013-2014 lidar Source_Contribution: The LAS format (lidar data exchange file format) was used. Using the cart method to download the data, the data were downloaded in the UTM Zone 19 projection with the NAD83 horizontal datum and NAVD88 vertical datum with horizontal and vertical units in meters. Process_Step: Process_Description: Explanation of the methods used to delineate shoreline features that are a part of this update for the Massachusetts Office of Coastal Zone Management Shoreline Change Project: This data release has two methods of shoreline extraction: the profile method and the contour method. The profile method is further broken down into two varieties: shorelines that are extracted along open-ocean coasts and those that are sheltered. Profile open-ocean coast (bias): datum-based mean high water (MHW) shoreline. The elevation of MHW was obtained from Weber and others (2005). These data have an associated uncertainty table that provides the horizontal uncertainty associated with the shoreline, a proxy-datum bias value describing the unidirectional horizontal offset between the MHW shoreline and the historical proxy-based high water line (HWL) shorelines, and the uncertainty associated with the calculated proxy-datum bias value. These shorelines are polyline-M shapefiles. Profile not open-ocean (no bias): datum-based mean high water (MHW) shoreline. Since Weber and others (2005) only covers open-ocean coast, all MHW elevations for these data come from NOAA's vdatum (version 3.8; https://vdatum.noaa.gov/). These data have an associated uncertainty table that provides the horizontal uncertainty associated with the shoreline. These shorelines are polyline-M shapefiles. Contour method: this method is used along sections of the coast that were too crenulated for the for the profile method. The elevation of MHW was used from Weber and others, 2005 when available. In areas not covered by Weber and others (2005), NOAA's vdatum (version 3.8; https://vdatum.noaa.gov/) is used to determine MHW. Once this value is determined, the contour line of that value is extracted from the DEM surface in the area of interest. These shorelines are polyline shapefiles. Not included in this data release is another method of shoreline delineation. A brief explanation of this method is provided to convey the importance of the information contained in the uncertainty tables, even if that information is not actively used in all cases in this data release. Proxy-based historical shorelines: Vector shorelines digitized from georegistered T-sheets using standard editing tools in ArcMap provide a proxy-based high water line (HWL) feature that is not tidally-referenced. Individually these shorelines are stored as polyline shapefiles. In previous analyses (see Himmelstoss and others, 2011 listed in cross references) these data were published as a merged file with profile method data extracted from lidar. Therefore the published data are all polyline-M, but the historic HWL shorelines contain no linear referencing. Visually identified HWL-type proxy shorelines are virtually never coincident with datum-based MHW-type shorelines. In fact, HWL shorelines are almost universally estimated to be higher (landward) on the beach profile than MHW shorelines. Not accounting for this offset will cause shoreline change rates to be biased toward slower shoreline retreat, progradation rather than retreat, or faster progradation than in reality (for the typical case where datum-based MHW shorelines are more recent data than the proxy-based HWL shoreline dates). The Digital Shoreline Analysis System software (Himmelstoss and others, 2018) used to compute rates detects when proxy-based and datum-based shorelines are present and uses linear referencing to retrieve the information on bias and uncertainty stored in the DBF table associated with the profile method shorelines and correct for the proxy-datum bias offset. Process_Date: 2016 Process_Step: Process_Description: Whenever possible, a profile method was used to extract the operational Mean High Water (MHW) shoreline from the lidar point cloud data, using a Matlab-based approach (Matlab version 2015b) similar to the one developed by Stockdon and others (2002). Elevation values for the height of MHW were determined from vdatum (version 3.8) provided by NOAA (https://vdatum.noaa.gov/). We continued the practice set out by Weber and others, (2005) of using one MHW value for a continuous section of coast (as opposed to using a continuously varying value). We chose this value such that it is always within 15 cm of the value returned by vdatum at any point along the coast. For example, we used MHW = 0.6 m for all of Buzzards Bay even though vdatum shows it varying slightly over the basin. For the shoreliens in the northwest facing part of the coast (from Gay Head to West Chop) we used an average MHW of 0.4m. For the northeast facing part of the coast (from West Chop to Cape Poge), we used an average MHW of 0.24m. This profile method uses a coast-following reference line with 20 m spaced profiles. All lidar data points that are within 1 m of each profile are associated with that profile. All work is done on the 2 m wide profiles, working on a single profile at a time. For each profile, a linear regression was fit through data points on the foreshore and the regression was evaluated at the MHW elevation to yield the cross-shore position of the MHW shoreline. If there was a data gap at MHW or if the MHW elevation was obscured by water points, the linear regression was simply extrapolated to the MHW elevation. Foreshore beach slope is defined as the slope of the regression line. Each MHW shoreline point that was extracted using this profile method has an uncertainty associated with it. This uncertainty includes three components: 1) the 95% confidence interval on the linear regression estimate of the shoreline position; 2) the uncertainty associated with the elevation of the raw lidar data and; 3)the uncertainty due to extrapolation. These three components of uncertainty were added in quadrature to yield a total error for each shoreline point. For details on each component, see pp.12-13 under the section titled Lidar-Derived MHW Shoreline Position Uncertainty in Hapke and others (2011). There is a known horizontal offset between the datum-based lidar MHW shoreline and the proxy-based historical shorelines that nearly always acts in one direction (Ruggiero and List, 2009). Wave data from offshore buoys is used with the beach slope in a run-up equation to estimate a proxy-datum bias correction to reconcile the unidirectional offset that the proxy-based historic High Water Line (HWL) shorelines, such as those derived from NOAA t-sheets or air photos, have in relationship to the lidar-derived, datum-based operational MHW line. An uncertainty associated with the bias was also computed, which can also be thought of as the uncertainty of the HWL shorelines due to water level fluctuations. For details on the proxy-datum bias and bias uncertainty, see pp.9-11 under the section titled The Proxy-Datum Bias Correction between HWL and MHW Shorelines in Hapke and others (2011). Hapke, C.J., Himmelstoss, E.A., Kratzmann, M.G., List, J.H., and Thieler, E.R., 2011, National assessment of shoreline change—Historical shoreline change along the New England and Mid-Atlantic coasts: U.S. Geological Survey Open-File Report 2010-1118, 57 p., https://pubs.usgs.gov/of/2010/1118/. Ruggiero, P., and List, J.H., 2009, Improving accuracy and statistical reliability of shoreline position and change rate estimates: Journal of Coastal Research, v. 25, no. 5, p. 1069-1081. [Also available at https://www.jstor.org/stable/27752753] Stockdon, H.F., Sallenger, A.H., List, J.H., and Holman, R.A., 2002, Estimation of shoreline position and change using airborne topographic lidar data: Journal of Coastal Research, v.18, no. 3, p. 502-513. [Also available at https://www.jstor.org/stable/4299097] Process_Date: 2016 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Amy S. Farris Contact_Organization: U.S. Geological Survey Contact_Position: Oceanographer Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Contact_Voice_Telephone: 508-548-8700 x2344 Contact_Electronic_Mail_Address: afarris@usgs.gov Process_Step: Process_Description: The series of points representing the shoreline were converted into a calibrated route shapefile for use in ArcGIS using a Python script (for Python v2.7.12). The script generates a point shapefile, converts it to a polyline-M file, saves the uncertainty information in an accessory dBase (.dbf) file and finally generates a calibrated route for the newly-created polyline-M file. Calibration is based on the unique and sequential profile ID value provided with the point data and stored as the M-value. This value is also stored as an attribute in the uncertainty .dbf file and is used as the common attribute field linking the shoreline route file (filename_pshorelineNB.shp) to the uncertainty table (filename_pshorelineNB_uncertainty.dbf where filename indicates the area of work, such as MarthasVineyard and the p indicates the profile method, and the NB indicates that there is no proxy-datum bias information) storing the lidar positional uncertainty. This process step and all subsequent process steps, unless otherwise noted, were performed by the same person - Emily Himmelstoss. Process_Date: 2016 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Emily A. Himmelstoss Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Contact_Voice_Telephone: 508-548-8700 x2262 Contact_Electronic_Mail_Address: ehimmelstoss@usgs.gov Process_Step: Process_Description: The shorelines shapefile was projected in Esri's ArcToolbox (v.10.5) > Data Management Tools > Projections and Transformations > Feature > Project. Parameters: input projection - NAD 83 UTM 19N; output projection - geographic coordinates (WGS 84); transformation - WGS_1984_To_NAD_1983_1. Process_Date: 2018 Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword (20200810). Tweaked a thesaurus name (20211117). Process_Date: 20211117 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: 46 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0197422321 Longitude_Resolution: 0.0262000699 Geographic_Coordinate_Units: Decimal seconds Geodetic_Model: Horizontal_Datum_Name: WGS_1984 Ellipsoid_Name: WGS_84 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: MarthasVineyard_pShorelineNB_2013.shp Entity_Type_Definition: Table containing attribute information associated with the data set. Entity_Type_Definition_Source: U.S. Geological Survey 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: Route_ID Attribute_Definition: Route identification value assigned to individual lidar shoreline line segments. A unique cross-shore profile identification value is stored at each vertex of the lidar route and serves as a common attribute to the shoreline uncertainty table (MarthasVineyard_pShorelineNB_2013_uncertainty.dbf). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 55 Attribute: Attribute_Label: Date_ Attribute_Definition: Date of shoreline position; date of survey as indicated on source material. A default date of 07/01 was assigned to shorelines where only the year was known (month and day unknown). Using July, the mid-point month of the calendar year, minimizes the potential offset to the actual shoreline date by a maximum of six months. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Date of the shoreline in mm/dd/yyyy Attribute: Attribute_Label: Uncy Attribute_Definition: The estimate of shoreline position uncertainty for these data is stored is the associated MarthasVineyard_pShorelineNB_2013_uncertainty.dbf file. This field is only preserved for shoreline change analysis. The shoreline change software (DSAS) uses linear referencing to interpolate an uncertainty value at the measurement location along the shoreline based on data stored in the uncertainty file. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0.0 Enumerated_Domain_Value_Definition: Place holder in field. Actual values are stored in separate table. Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Source Attribute_Definition: Agency that provided shoreline feature or the data source used to digitize shoreline feature. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: lidar-USGS Enumerated_Domain_Value_Definition: The data was derived from lidar by the U.S. Geological Survey. Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Source_b Attribute_Definition: Method of deriving shoreline feature. These shorelines were all extracted via the same profile method, but when combined with other data for shoreline analysis this field preserves the method used to derive the shoreline. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: profile no bias Enumerated_Domain_Value_Definition: The mean high water shoreline was extracted from lidar data using a profile method. Due to the shoreline location and lack of wave buoy data, no bias was calculated. Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: ATTRIBUTE Attribute_Definition: The shoreline reference. These profile shorelines are all referenced to Mean High Water, which is datum-based. When combining these shoreline features with other data for rate calculations this field is used to differentiate between proxy and datum-based features. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: MHW Enumerated_Domain_Value_Definition: mean high water Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Year_ Attribute_Definition: Four digit year of shoreline. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 2013 Enumerated_Domain_Value_Definition: The calendar year of the source data from which the shoreline feature was extracted. Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Default_D Attribute_Definition: In historic shoreline data the exact month and day of a shoreline are unknown. This field is used to indicate when a default month and day are used. It does not apply to this dataset, but is preserved for merging this shoreline feature with other historic shoreline data for change analysis. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: False. No default month and day were used. Enumerated_Domain_Value_Definition_Source: USGS Attribute: Attribute_Label: Shape_Leng Attribute_Definition: Length of shoreline in meter units (WGS84, UTM zone 19N). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 20.3443419649 Range_Domain_Maximum: 3669.55943096 Attribute_Units_of_Measure: meters Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing and physical address Address: Federal Center, Building 810, MS 302 City: Denver State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: The dataset contains the polyline shapefile of shoreline data derived from a profile method, (MarthasVineyard_pShorelineNB_2013.shp and other shapefile components), browse graphic (MarthasVineyard_pShorelineNB_2013_browse), and the FGDC CSDGM metadata in XML and TEXT format. Distribution_Liability: Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm 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: Shapefile Format_Version_Number: ArcGIS 10.5 Format_Specification: Esri polyline-M shapefile Format_Information_Content: The dataset contains the polyline-M shapefile, browse graphic, and CSDGM metadata. Transfer_Size: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5bd865a3e4b0b3fc5ce9d9f0 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5bd865a3e4b0b3fc5ce9d9f0 Network_Resource_Name: https://doi.org/10.5066/P9O7S72B Access_Instructions: The first link is to the page containing the data. The second is a direct link to download all data available from the page as a zip file. And the final link is to the publication landing page. Fees: None Technical_Prerequisites: These data are available in a polyline-M shapefile format. The user must have software to read and process the data components of a shapefile. Metadata_Reference_Information: Metadata_Date: 20240319 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Emily A. Himmelstoss Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2262 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov Contact_Instructions: The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240319) Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time