Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2013 Title: Digital Shoreline Analysis System version 4.3 shoreline intersection points used to calculate short-term (End Point Rate) shoreline change statistics within the Nantucket coastal region including the Nantucket Sound- and Atlantic Ocean- facing coasts of Nantucket, Muskeget and Tuckernuck Islands (Nantucket_intersects_STepr.shp) Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2012-1183 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/10.3133/ofr20121183 Online_Linkage: https://pubs.usgs.gov/of/2012/1183/ Online_Linkage: https://pubs.usgs.gov/of/2012/1183/data/Nantucket/Nantucket_intersects_STepr.zip Larger_Work_Citation: 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 2013 update 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/ Description: Abstract: Due to continued coastal population growth and increased threats of erosion, current data on trends and rates of shoreline movement are required to inform shoreline and floodplain management. The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast. 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. The Coastal and Marine Geology Program of the U.S. Geological Survey (USGS) in cooperation with the Massachusetts Office of Coastal Zone Management, has compiled reliable historical shoreline data along open-facing sections of the Massachusetts coast under the Massachusetts Shoreline Change Mapping and Analysis Project 2013 Update. Two oceanfront shorelines for Massachusetts (approximately 1,800 km in total length) were (1) delineated using 2008/09 color aerial orthoimagery, and (2) extracted from topographic LIDAR datasets (2007) obtained from NOAA's Ocean Service, Coastal Services Center. The new shorelines were integrated with existing Massachusetts Office of Coastal Zone Management and USGS historical shoreline data in order to compute long- and short-term rates using the latest version of the Digital Shoreline Analysis System (DSAS). Purpose: This dataset contains the measurement locations used by the Digital Shoreline Analysis System (DSAS) software to compute short-term end point rate (EPR) of change statistics for the Nantucket region of Massachusetts where there was not enough historic data to compute a linear regression rate (LRR). The points represent the individual shoreline locations along each measurement transect generated by DSAS. The data can be used to identify the number of shorelines used to compute rates at a given location as well as the specific shoreline dates. Short-term end point statistics were calculated for approximately the last three decades using historical shoreline data that begins with the 1970-1982 time period and ends with the 2008-2009 shorelines compiled for the Massachusetts Office of Coastal Zone Management Shoreline Change Project. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2013 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -70.310792 East_Bounding_Coordinate: -70.012205 North_Bounding_Coordinate: 41.344901 South_Bounding_Coordinate: 41.276901 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:8679fdd7-bd2c-4115-afa2-67b17fce5849 Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Esri point shapefile Theme_Keyword: Shoreline Theme_Keyword: Historic Shoreline Theme_Keyword: short-term Theme_Keyword: Shoreline Change Rate Theme_Keyword: Erosion Theme_Keyword: Accretion Theme_Keyword: Intersects Theme_Keyword: Measurement Locations Theme_Keyword: Baseline Theme_Keyword: Transect Theme_Keyword: Digital Shoreline Analysis System Theme_Keyword: DSAS Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: Massachusetts Office of Coastal Zone Management Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geospatial datasets Theme_Keyword: coastal processes Place: Place_Keyword_Thesaurus: None Place_Keyword: Atlantic Coast Place_Keyword: United States Place_Keyword: New England Place_Keyword: Massachusetts Place_Keyword: Nantucket Place_Keyword: Nantucket Sound Place_Keyword: Muskeget Island Place_Keyword: Tuckernuck Island Access_Constraints: None Use_Constraints: These data were automatically generated using the DSAS version 4.3 software application and should only be used for purposes explicitly stated by the originating organization. Please recognize the U.S. Geological Survey (USGS) and the Massachusetts Office of Coastal Zone Management as the originators of this dataset. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Theresa Smith Contact_Position: Contract Geologist 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 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: theresasmith@usgs.gov Native_Data_Set_Environment: Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.1850 Cross_Reference: Citation_Information: Originator: E.R. Thieler Originator: T.L. Smith Originator: Julia Knisel Originator: D.W. Sampson 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: E.R. Thieler Originator: E.A. Himmelstoss Originator: J.L. Zichichi Originator: A. Ergul Publication_Date: 2009 Title: Digital Shoreline Analysis System (DSAS) version 4.0: an ArcGIS extension for calculating shoreline change Series_Information: Series_Name: Open-File Report Issue_Identification: 2008-1278 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Current version is 4.3 Online_Linkage: https://pubs.er.usgs.gov/publication/ofr20081278 Cross_Reference: Citation_Information: Originator: E. Robert Thieler Originator: James F. O'Connell Originator: Courtney A. Schupp Publication_Date: 20010904 Title: The Massachusetts Shoreline Change Project: 1800s to 1994 Technical Report Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Administrative Report Online_Linkage: http://www.mass.gov/czm/hazards/pdf/sc_technical_report.pdf Online_Linkage: http://www.mass.gov/czm/hazards/shoreline_change/shorelinechangeproject.htm Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The attributes of this dataset are based on the field requirements of the Digital Shoreline Analysis System and were automatically generated by the software during the calculation of shoreline change rates performed by the software. Logical_Consistency_Report: These data were generated using DSAS v.4.3, an automated software program which does not perform checks for fidelity of the input features. The measurement locations are generated during the rate calculation process, after editing of the transects is complete. Completeness_Report: This dataset contains the measurement locations automatically established by the DSAS software application and were used to calculate short-term end point rate shoreline change rates for the region where there was not enough historic data to compute a linear regression rate (LRR). Historical shoreline data older than 1970 were excluded from the rate calculations as the short-term period is defined as 1970-2009. These data are part of a state-wide assessment of shoreline change that includes over 26,500 individual transect locations that were used to compute both short- and long-term rates of change, based on almost 9200 linear kilometers of historical shoreline position data. It is very likely that some gross errors or blunders were introduced during compilation and analysis of this large amount of information. Such errors have been described in the context of shoreline change mapping as coarse errors (Fenster and others, 2001) and can generally be considered to affect only a very small percentage of the overall dataset. Fenster, M.S., Dolan, R., and Morton, R.A., 2001, Coastal storms and shoreline change: signal or noise?: Journal of Coastal Research, v. 17, no. 3, p. 714-720. . Lineage: Process_Step: Process_Description: Rate Calculations Performed using DSAS v4.3 for ArcMap 10 on Selected Shoreline Features Only (shoreline years 1970-2009). Parameters Used: shoreline layer=Nantucket_shorelines, shoreline date field=Date_, shoreline uncertainty field name=Uncy (additional shoreline data stored in Nantucket_shoreline_uncertainty.dbf), the default accuracy=10.8 meters, shoreline intersection parameters=nearest, stats calculations=[Shoreline Change Envelope (SCE), Net Shoreline Movement (NSM), End Point Rate (EPR)], shoreline threshold=2, confidence interval=90%, Output rate table name=Nantucket_transects_rates_20121024_131011.dbf. Output intersects table name=Nantucket_transects_intersect_20121024_131011.dbf. This process step and all subsequent process steps were performed by Theresa Smith. Process_Date: 20121024 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Theresa Smith Contact_Organization: U.S. Geological Survey Contact_Position: Contract Geologist 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 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: theresasmith@usgs.gov Process_Step: Process_Description: The shoreline intersects output table contains X- and Y-coordinate information for each shoreline measurement on DSAS transects. This table (Nantucket_transects_intersect_20121024_131011.dbf) was used to create a temporary event theme to preview the transect/shoreline measurement locations in ArcMap. The intersects file was right-clicked in the ArcMap (v.10) table of contents. "Display XY data..." was chosen from the pop-up menu. A new Display XY Data window opens and the following parameters were entered: X Field: IntersectX; Y Field; Intersect Y; Z Field: ; Coordinate System of Input Coordinates: NAD_1983_Massachusetts_Mainland_FIPS_2001. Process_Date: 20121024 Process_Step: Process_Description: The temporary event theme is saved to a shapefile by right-clicking the Nantucket_transects_intersect_20121024_131011 Events layer in the table of contents (ArcMap 10) and choosing Data > Export Data from the pop-up menu. This opens an Export Data window where the following parameters were entered: Export: All features; Select "Use the same coordinate system as this layer's source data"; Output feature class: Nantucket _intersects_STepr.shp. Process_Date: 20121024 Process_Step: Process_Description: For the MA Shoreline Change Update, linear regression was the preferred method for calculating short-term shoreline change rates. However, not all transects intersected three shorelines, which is required for the calculation of linear regression rates. For sections in which linear regression rates were not calculated, end point rates (calculated using two shorelines) were reported. The end point intersects output feature class was clipped to the linear regression rates output feature class during an edit session in ArcMap v. 10 by (1) the end point intersects output table was joined to the transect feature class by right-clicking on the transect layer > joins and relates > join > join attributes from a table, (2) transects in which both end point rates and linear regression rates were calculated were selected from the joined attribute table by choosing from the drop down menu Select By Attributes. Parameters: Create a new selection; select from joined table: Nantucket_intersects_STepr.TransectID>=0 AND Nantucket_rates_transects_STlr.TransectID >=0 and (3) the selected attributes were deleted from the end point rates output table. Process_Date: 20121127 Process_Step: Process_Description: The exported transect shapefile was projected in Esri's ArcToolbox (v.10) > Data Management Tools > Projections and Transformations > Feature > Project. Parameters: input projection - NAD_1983_StatePlane_Massachusetts_Mainland_FIPS_2001; output projection - geographic coordinates (NAD83); transformation - none. Process_Date: 20121127 Process_Step: Process_Description: Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Attempted to modify http to https where appropriate. Added a landing page link as the first link in the identification section. Fixed online link to DSAS cross-reference. The distribution format name was modified in an attempt to be more consistent with other metadata files of the same data format. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Process_Date: 20171011 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 Process_Step: Process_Description: USGS Thesaurus keywords added to the keyword section. Process_Date: 20180720 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 Process_Step: Process_Description: Crossref DOI link was added as the first link in the metadata. Process_Date: 20191118 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 Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20200908 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: Entity point Point_and_Vector_Object_Count: 496 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Nantucket_intersects_STepr Entity_Type_Definition: Measurement points used to calculate short-term shoreline change statistics 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: OBJECTID Attribute_Definition: Internal feature number used within geodatabase. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: TransectId Attribute_Definition: Used as a permanent and unique identification number (same as ObjectID field in Transect attribute table) for each transect calculated by DSAS. This attribute was used as the common field when joining the intersects table (.dbf) to the transect feature class in a geodatabase. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: BaselineId Attribute_Definition: Unique identification number of the baseline segment. If BaselineID=0 no transects were generated. Used by DSAS to determine transect ordering alongshore if multiple baseline segments exist. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: unlimited Attribute: Attribute_Label: ShorelineI Attribute_Definition: Date of shoreline position; date of survey as indicated on source material in the formal mm/dd/yyyy. 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: Range_Domain: Range_Domain_Minimum: 07/01/1978 Range_Domain_Maximum: 03/17/2009 Attribute: Attribute_Label: Distance Attribute_Definition: The along-transect distance from the baseline to the shoreline point measured in meters (State Plane Masachusetts Mainland FIPS 2001, NAD 83). Positive values are used when the reference baseline is landward (onshore) of the shorelines. Negative values are used when the reference baseline is seaward (offshore) of the shorelines. The positive/negative values provide appropriate directionality for describing erosional or accretional trends in shoreline movement. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1209.246789 Range_Domain_Maximum: -1.109375 Attribute: Attribute_Label: IntersectX Attribute_Definition: Assigned by DSAS automatically to record the X coordinate of the shoreline measurement point at each transect in meter units (State Plane Masachusetts Mainland FIPS 2001, NAD 83). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Values based on data set extent. Attribute: Attribute_Label: IntersectY Attribute_Definition: Assigned by DSAS automatically to record the Y coordinate of the shoreline measurement point at each transect in meter units (State Plane Masachusetts Mainland FIPS 2001, NAD 83). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Values based on data set extent. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: 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 Contact_Facsimile_Telephone: 508-457-2310 Resource_Description: Downloadable data. 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 Format_Specification: Esri point shapefile Format_Information_Content: This WinZip (version 16.5) file contains a shapefile of measurement locations (intersects) generated by the Digital Shoreline Analysis System used to calculate short-term rates for the Nantucket region of Massachusetts. Metadata is also included. File_Decompression_Technique: Use WinZip or pkUnzip Transfer_Size: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://pubs.usgs.gov/of/2012/1183/data/Nantucket/Nantucket_intersects_STepr.zip Access_Instructions: Data may be downloaded via the World Wide Web (WWW). 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: 20211116 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Theresa Smith Contact_Organization: U.S. Geological Survey Contact_Position: Contract Geologist 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 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 metadata contact is no longer with the USGS or the email is otherwise invalid. Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time