Intersects for the coastal region around Boston, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.1

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 20210831
Title:
Intersects for the coastal region around Boston, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.1
Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: data release
Issue_Identification: doi:10.5066/P9YGIYFX
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/P9YGIYFX
Online_Linkage:
https://www.sciencebase.gov/catalog/item/61081421d34ef8d70565b1a5
Larger_Work_Citation:
Citation_Information:
Originator: Marie K. Bartlett
Originator: Rachel E. Henderson
Originator: Amy S. Farris
Originator: Emily A. Himmelstoss
Publication_Date: 2021
Title:
Massachusetts Shoreline Change Project, 2021 Update: A GIS Compilation of Shoreline Change Rates Calculated Using Digital Shoreline Analysis System Version 5.1, With Supplementary Intersects and Baselines for Massachusetts
Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: data release
Issue_Identification: doi:10.5066/P9YGIYFX
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
suggested citation: Bartlett, M.K., Henderson, R. E., Farris, A.S., and Himmelstoss, E.A., 2021, Massachusetts shoreline change project, 2021 update–A GIS compilation of shoreline change rates calculated using Digital Shoreline Analysis System version 5.1, with supplementary intersects and baselines for Massachusetts: U.S. Geological Survey data release. https://doi.org/10.5066/P9YGIYFX
Online_Linkage:
https://www.sciencebase.gov/catalog/item/60ff22dad34e3ccd830d62aa
Online_Linkage: https://doi.org/10.5066/P9YGIYFX
Description:
Abstract:
The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast and support local land-use decisions. Trends of shoreline position over long and short-term timescales provide information to landowners, managers, and potential buyers about possible future impacts to coastal resources and infrastructure. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates 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. In 2018, two new mean high water (MHW) shorelines for the Massachusetts coast extracted from lidar data between 2010-2014 were added to the dataset. This 2021 data release includes rates that incorporate one new shoreline from lidar data extracted in 2018 by the U.S. Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX), added to the existing database of all historical shorelines (1844-2014), for the North Shore, South Shore, Cape Cod Bay, Outer Cape, Buzzard’s Bay, South Cape, Nantucket, and Martha’s Vineyard. 2018 lidar data did not cover the Boston or Elizabeth Islands regions. Included in this data release is a proxy-datum bias reference line that accounts for the positional difference in a proxy shoreline (the high water Line shoreline) and a datum shoreline (the mean high water shoreline. This issue is explained further in Ruggiero and List (2009) and in the process steps of the metadata associated with the rates. This release includes both long-term (~150+ years) and short term (~30 years) rates. Files associated with the long-term rates have “LT” in their names, files associated with short-term rates have "ST” in their names.
Purpose:
This dataset consists of point data which are created by the Digital Shoreline Analysis System (DSAS) version v5.1 at the intersection of shoreline and transect locations. Rate calculations were computed within a GIS using the Digital Shoreline Analysis System (DSAS) version 5.1, an ArcGIS extension developed by the U.S. Geological Survey. Measurement transects are cast by DSAS from the baseline to intersect shoreline vectors, and the intersect data provide location and time information used to calculate rates of change. These point data contain identification information related to the DSAS transect (TransectID, TransOrder) as well as the shoreline (ShorelineID, Uncertainty) and proxy-datum bias data (if applicable).
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2021
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.052311
East_Bounding_Coordinate: -70.874438
North_Bounding_Coordinate: 42.343509
South_Bounding_Coordinate: 42.247342
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: environment
Theme_Keyword: geoscientificInformation
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Intersects
Theme_Keyword: Shoreline
Theme_Keyword: Shoreline Change
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:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geospatial datasets
Theme_Keyword: coastal processes
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:61081421d34ef8d70565b1a5
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Atlantic Coast
Place_Keyword: United States
Place_Keyword: North America
Place_Keyword: Massachusetts
Place_Keyword: Boston
Access_Constraints: None.
Use_Constraints:
These data were automatically generated using the DSAS v5.1 software application. 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. These data are not to be used for navigation.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Marie K. Bartlett
Contact_Address:
Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x 2306
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: mbartlett@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
https://www.sciencebase.gov/catalog/file/get/61081421d34ef8d70565b1a5?name=Boston_intersects_browse.PNG
Browse_Graphic_File_Description: Map view of data
Browse_Graphic_File_Type: png
Native_Data_Set_Environment:
Microsoft Windows 10 Version 6.2 (Build 1909) Esri ArcGIS 10.7.1.11595
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
Edition: 1
Geospatial_Data_Presentation_Form: publication
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://code.usgs.gov/cch/dsas/
Online_Linkage: https://doi.org/10.5066/P9VW42I0
Online_Linkage: https://woodshole.er.usgs.gov/project-pages/DSAS/
Cross_Reference:
Citation_Information:
Originator: Emily A. Himmelstoss
Originator: Rachel E. Henderson
Originator: Meredith G. Kratzmann
Originator: Amy S. Farris
Publication_Date: 2018
Title: DSAS v5.0 user guide
Geospatial_Data_Presentation_Form: publication
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2018-1179
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested citation: Himmelstoss, E.A., Henderson, R.E., Kratzmann, M, Farris, A., 2018, DSAS version 5.0 user guide. U.S. Geological Survey report 2018-1179, https://doi.org/10.3133/ofr20181179
Online_Linkage: https://doi.org/10.3133/ofr20181179
Online_Linkage:
https://www.usgs.gov/centers/whcmsc/science/digital-shoreline-analysis-system-dsas
Cross_Reference:
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
Geospatial_Data_Presentation_Form: DOI:10.5066/P9O7S72B
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9O7S72B
Publication_Information:
Publication_Place: Reston, VA
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/5bcde5dce4b0f0758fc178d0
Online_Linkage:
https://www.sciencebase.gov/catalog/file/get/5bcde5dce4b0f0758fc178d0
Cross_Reference:
Citation_Information:
Originator: Peter Ruggiero
Originator: Jeffrey H. List
Publication_Date: 200909
Title:
Improving Accuracy and Statistical Reliability of Shoreline Position and Change Rate Estimates
Geospatial_Data_Presentation_Form: publication
Series_Information:
Series_Name: Journal of Coastal Research
Issue_Identification: vol. 255
Publication_Information:
Publication_Place: n/a
Publisher: Coastal Education and Research Foundation
Other_Citation_Details: ppg. 1069-1081
Online_Linkage: https://doi.org/10.2112/08-1051.1
Cross_Reference:
Citation_Information:
Originator: Emily A. Himmelstoss
Originator: Amy S. Farris
Originator: Kathryn M. Weber
Publication_Date: 2019
Title:
Massachusetts Shoreline Change Project, 2018 Update: A GIS Compilation of Shoreline Change Rates Calculated Using Digital Shoreline Analysis System Version 5.0, With Supplementary Intersects and Baselines for Massachusetts
Edition: 1
Geospatial_Data_Presentation_Form: publication
Series_Information:
Series_Name: Data release
Issue_Identification: DOI:10.5066/P9RRBEYK
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/P9RRBEYK
Online_Linkage:
https://www.sciencebase.gov/catalog/item/5be5857ce4b0b3fc5cf8c6ca
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 generation of the intersects layer.
Logical_Consistency_Report:
These data were generated using DSAS, an automated software program, which does not perform checks for fidelity of the input features. Following generation of the rates and intersects by the DSAS software a visual inspection of the intersects was performed in map view to determine that no unwanted measurements were included in the desired (long- or short-term) shoreline change analysis.
Completeness_Report:
This dataset contains all the shoreline/transect intersects used to compute rates in the DSAS v5.1 software application.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The intersection points represent the location where transects cast by the Digital Shoreline Analysis System (DSAS) software crosses a historical shoreline position. They can be used to visually display which shorelines were used in the rate calculations and capture details on the shoreline represented by the intersection. The distances between the reference baseline and each shoreline intersection along a transect are used by the DSAS software to compute the shoreline change metrics. The positional uncertainties associated with the shoreline and intersection points are captured in the shoreline attribute table.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Marie K. Bartlett
Originator: Amy S. Farris
Originator: Kathryn M. Weber
Originator: Emily A. Himmelstoss
Publication_Date: 2021
Title:
Massachusetts Shoreline Change Project: A GIS Compilation of Vector Shorelines (1844-2018)
Edition: 1
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: data release
Issue_Identification: doi:10.5066/P9O8QA8N
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested citation: Bartlett, M.K., Farris, A.S., and Weber, K.M., Himmelstoss, E.A., 2021, Massachusetts shoreline change project—A GIS compilation of vector shorelines (1844-2018): U.S. Geological Survey data release
Online_Linkage: https://doi.org/10.5066/P9O8QA8N
Type_of_Source_Media: vector digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1844
Ending_Date: 2018
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: MA 1844 - 2018 Shorelines
Source_Contribution:
Shorelines published as part of the Massachusetts Shoreline Change Project, 2021 Update were compiled for shoreline change analysis with DSAS v5.1
Source_Information:
Source_Citation:
Citation_Information:
Originator: Marie K. Bartlett
Originator: Rachel E. Henderson
Originator: Amy S. Farris
Originator: Emily A. Himmelstoss
Publication_Date: 2021
Title:
Baseline for the coastal region around Boston, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.1
Edition: 1
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: data release product
Issue_Identification: doi:10.5066/P9YGIYFX
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/P9YGIYFX
Type_of_Source_Media: vector digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2021
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Boston_baseline
Source_Contribution:
Baseline files for region published as part of the Massachusetts Shoreline Change Project, 2021 Update used for shoreline change analysis with DSAS v5.1
Process_Step:
Process_Description:
Explanation of the methods used to calculate shoreline change rates as part of the 2021 update for the Massachusetts Office of Coastal Zone Management Shoreline Change Project: This data release consists of intersect point shapefiles that hold the data necessary to calculate long- and short-term rates of shoreline change. Depending on the available data, the shorelines used for analysis may include those referenced to mean high water (MHW) or a proxy-based high water line (HWL).Transects with both MHW and HWL shorelines will have the proxy-datum bias applied. Shoreline data from the 2021 data release (historical and 2018), were merged into a single feature class (MA_shorelines_LT) for the long-term shoreline change. For this completed shoreline compilation, shoreline data were extracted for the last 30 years and merged into a feature class (MA_shorelines_ST) to calculate short-term shoreline change. All files were projected to UTM zone 19N coordinates and confirmed to have the same attribute names needed for use in DSAS. Note the range of shoreline dates will vary by location. Please check the intersect file attributes for a record of the exact dates used. This process step and all subsequent process steps were performed by the same person: Marie K. Bartlett
Source_Used_Citation_Abbreviation: MA 1844 - 2018 Shorelines
Process_Date: 2020
Source_Produced_Citation_Abbreviation: MA_shorelines_LT
Source_Produced_Citation_Abbreviation: MA_shorelines_ST
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Marie K. Bartlett
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
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2306
Contact_Electronic_Mail_Address: mbartlett@usgs.gov
Process_Step:
Process_Description:
Transect features generated in a personal geodatabase using DSAS v5.1.2020.0720.0030. Parameters Used: baseline layer= Boston_baseline, baseline group field=DSAS_group, transect spacing=50 meters, search distance=200 meters, land direction=right, shoreline intersection=seaward, File produced = Boston_transects_LT. For additional details on these parameters, please see the DSAS help file distributed with the DSAS software, or visit the USGS website at: https://www.usgs.gov/centers/whcmsc/science/digital-shoreline-analysis-system-dsas. Some transects were manually edited for length, moved, or deleted in an edit session using standard editing tools in ArcMap v10.7.1
Source_Used_Citation_Abbreviation: MA_shorelines_LT
Source_Used_Citation_Abbreviation: Boston_baseline
Process_Date: 2020
Source_Produced_Citation_Abbreviation: Boston_transects_LT
Process_Step:
Process_Description:
Shoreline intersects and rate calculations performed for long-term rates with and without bias. Parameters Used: shoreline layer= MA_shorelines_LT, shoreline date field=Date_, shoreline uncertainty field name=Uncy, the default accuracy=10 meters, shoreline intersection=seaward, stats calculations=[LRR], shoreline threshold=3, confidence interval=90%. Files produced = Bos_trans_LT_rates_20210604_120440, Bos_trans_LT_intersect_20210604_120440. NOTE: All shorelines have an uncertainty value listed in the attribute table that provides the horizontal uncertainty associated with the shoreline, regardless of the method used. The shoreline database contains both MHW and HWL shorelines. Therefore a proxy-datum bias (PDB), stored as a line feature class appended to the reference baseline, is applied during rate calculation. For more information about the origin of the proxy-datum bias, see Ruggiero and List (2009). Rate statistics are presented with both the PDB applied, and with the bias omitted, in which case the attribute field will show “NB_” or “No bias”. The bias uncertainty values are stored within the bias feature attribute table.
Source_Used_Citation_Abbreviation: MA_shorelines_LT
Source_Used_Citation_Abbreviation: Boston_transects_LT
Process_Date: 2021
Source_Produced_Citation_Abbreviation: Boston_trans_rates_LT
Source_Produced_Citation_Abbreviation: Boston_intersects_LT
Process_Step:
Process_Description:
Transect features generated in a personal geodatabase using DSAS v5.1.2020.0720.0030. Parameters Used: baseline layer= Boston_baseline, baseline group field=DSAS_group, transect spacing=50 meters, search distance=200 meters, land direction=right, shoreline intersection=seaward, File produced = Boston_transects_ST. For additional details on these parameters, please see the DSAS help file distributed with the DSAS software, or visit the USGS website at: https://www.usgs.gov/centers/whcmsc/science/digital-shoreline-analysis-system-dsas Some transects were manually edited for length, moved, or deleted in an edit session using standard editing tools in ArcMap v10.7.1.
Source_Used_Citation_Abbreviation: MA_shorelines_ST
Source_Used_Citation_Abbreviation: Boston_baseline
Process_Date: 2021
Source_Produced_Citation_Abbreviation: Boston_transects_ST
Process_Step:
Process_Description:
Shoreline intersects and rate calculations performed for short-term rates with and without bias. Parameters Used: shoreline layer= MA_shorelines_ST, shoreline date field=Date_, shoreline uncertainty field name=Uncy, the default accuracy=5.1 meters, shoreline intersection=seaward, stats calculations=[SCE, NSM, EPR, LRR], shoreline threshold=2, confidence interval=90%. Files produced = Bos_trans_ST_rates_20210604_122712, Bos_trans_ST_intersect_20210604_122712. NOTE: All shorelines have an uncertainty value listed in the attribute table that provides the horizontal uncertainty associated with the shoreline, regardless of the method used. The shoreline database contains both MHW and HWL shorelines thus a proxy-datum bias (PDB), stored as a line feature class appended to the reference baseline, is applied during rate calculation. For more information about the origin of the proxy-datum bias, see Ruggiero and List (2009). Rate statistics are presented with both the PDB applied, and with the bias omitted, in which case the attribute field will show “NB_” or “No bias”. The bias uncertainty values are stored within the bias feature attribute table.
Source_Used_Citation_Abbreviation: MA_shorelines_ST
Source_Used_Citation_Abbreviation: Boston_transects_ST
Process_Date: 2021
Source_Produced_Citation_Abbreviation: Boston_trans_rates_ST
Source_Produced_Citation_Abbreviation: Boston_intersects_ST
Process_Step:
Process_Description:
The intersect feature classes were exported to shapefiles in ArcMap v10.7.1 by right-clicking the transect layer > Data > Export data.
Process_Date: 2021
Process_Step:
Process_Description:
The exported intersect shapefiles were projected in Esri's ArcToolbox (v10.7.1) > Data Management Tools > Projections and Transformations > Project. Parameters: input projection = UTM zone 19N (WGS84); output projection = geographic coordinates (WGS84); transformation = none.
Source_Used_Citation_Abbreviation: Boston_intersects_LT
Source_Used_Citation_Abbreviation: Boston_intersects_ST
Process_Date: 2021
Source_Produced_Citation_Abbreviation: Boston_intersects_LT
Source_Produced_Citation_Abbreviation: Boston_intersects_ST
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.0197383608
Longitude_Resolution: 0.0265553774
Geographic_Coordinate_Units: Decimal seconds
Geodetic_Model:
Horizontal_Datum_Name: WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Boston_intersects_LT.shp
Entity_Type_Definition:
The intersection points are generated by DSAS where each DSAS generated transect crosses a shoreline. These intersections represent the shoreline position, and contain the data necessary for DSAS to compute long-term rates, with and without the proxy-datum bias. Point Object Count: 6359
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: FID
Attribute_Definition:
Internal feature number used as a unique identifier of an object within a table primarily used in shapefiles.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition:
The geometry field (shape) is automatically created and maintained by ArcGIS. It provides a definition of the feature type (point, line, polygon).
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: TransectID
Attribute_Definition:
The TransectID relates directly to the original transect file Object Identifier, ObjectID or OID
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: unlimited
Attribute:
Attribute_Label: TransOrder
Attribute_Definition:
Assigned by DSAS based on ordering of transects along the baseline. Used to allow user to sort transect data along the baseline from baseline start to baseline end.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited
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: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: unlimited
Attribute:
Attribute_Label: ShorelineI
Attribute_Definition:
Date of shoreline position; date of survey as determined from shoreline layer.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Date of the shoreline in mm/dd/yyyy
Attribute:
Attribute_Label: Distance
Attribute_Definition:
The distance in meters between the DSAS reference baseline and the shoreline intersection point along a DSAS transect.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain:
Decimal values may be positive or negative, which is used to indicate landward (negative) or seaward (positive) direction from baseline origin.
Attribute:
Attribute_Label: IntersectX
Attribute_Definition:
The X-coordinate location in eastings of the intersect point in WGS84 UTM19N.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 330892.2448
Range_Domain_Maximum: 345596.4218
Attribute:
Attribute_Label: IntersectY
Attribute_Definition:
The Y-coordinate location in northings of the intersect point in WGS84 UTM19N.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4679090.175
Range_Domain_Maximum: 4689657.2098
Attribute:
Attribute_Label: Uncertaint
Attribute_Definition:
The uncertainty of the shoreline intersect point as defined by the positional-uncertainty value (DSAS_uncy) of the shoreline (ShorelineID).
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited
Attribute:
Attribute_Label: Bias_Dista
Attribute_Definition:
The distance in meters between the DSAS reference baseline and the shoreline intersection point along a DSAS transect with the proxy-datum bias applied. May be positive or negative depending on the orientation of the baseline.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -375.289222
Range_Domain_Maximum: 85.686274
Attribute:
Attribute_Label: BIAS
Attribute_Definition:
The estimated unidirectional horizontal offset between the MHW elevation of the lidar data and the HWL shoreline position.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited
Attribute:
Attribute_Label: BIAS_X
Attribute_Definition:
The X-coordinate location of the intersect point with the bias applied.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 330892.2458
Range_Domain_Maximum: 345596.4228
Attribute:
Attribute_Label: BIAS_Y
Attribute_Definition:
The Y-coordinate location of the intersect point with the bias applied.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4679090.176
Range_Domain_Maximum: 4689657.211
Attribute:
Attribute_Label: Bias_Uncer
Attribute_Definition:
This is an estimate of the uncertainty of the bias corrected shoreline. It is the shoreline uncertainty and the bias uncertainty added in quadrature.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited
Detailed_Description:
Entity_Type:
Entity_Type_Label: Boston_intersects_ST.shp
Entity_Type_Definition:
The intersection points are generated by DSAS where each DSAS generated transect crosses a shoreline. These intersections represent the shoreline position, and contain the data necessary for DSAS to compute short-term rates, with and without the proxy-datum bias. Point Object Count: 3762
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: FID
Attribute_Definition:
Internal feature number used as a unique identifier of an object within a table primarily used in shapefiles.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition:
The geometry field (shape) is automatically created and maintained by ArcGIS. It provides a definition of the feature type (point, line, polygon).
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: TransectID
Attribute_Definition:
The TransectID relates directly to the original transect file Object Identifier, ObjectID or OID
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: unlimited
Attribute:
Attribute_Label: TransOrder
Attribute_Definition:
Assigned by DSAS based on ordering of transects along the baseline. Used to allow user to sort transect data along the baseline from baseline start to baseline end.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited
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: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: unlimited
Attribute:
Attribute_Label: ShorelineI
Attribute_Definition:
Date of shoreline position; date of survey as determined from shoreline layer.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Date of the shoreline in mm/dd/yyyy
Attribute:
Attribute_Label: Distance
Attribute_Definition:
The distance in meters between the DSAS reference baseline and the shoreline intersection point along a DSAS transect.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain:
Decimal values may be positive or negative, which is used to indicate landward (negative) or seaward (positive) direction from baseline origin.
Attribute:
Attribute_Label: IntersectX
Attribute_Definition:
The X-coordinate location in eastings of the intersect point in WGS84 UTM19N.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 331254.9886
Range_Domain_Maximum: 345588.5416
Attribute:
Attribute_Label: IntersectY
Attribute_Definition:
The Y-coordinate location in northings of the intersect point in WGS84 UTM19N.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4679090.175
Range_Domain_Maximum: 4689657.226
Attribute:
Attribute_Label: Uncertaint
Attribute_Definition:
The uncertainty of the shoreline intersect point as defined by the positional-uncertainty value (DSAS_uncy) of the shoreline (ShorelineID).
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited
Attribute:
Attribute_Label: Bias_Dista
Attribute_Definition:
The distance in meters between the DSAS reference baseline and the shoreline intersection point along a DSAS transect with the proxy-datum bias applied. May be positive or negative depending on the orientation of the baseline.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -71.8069
Range_Domain_Maximum: 57.264
Attribute:
Attribute_Label: BIAS
Attribute_Definition:
The estimated unidirectional horizontal offset between the MHW elevation of the lidar data and the HWL shoreline position.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited
Attribute:
Attribute_Label: BIAS_X
Attribute_Definition:
The X-coordinate location of the intersect point with the bias applied.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 331254.989646
Range_Domain_Maximum: 345588.542599
Attribute:
Attribute_Label: BIAS_Y
Attribute_Definition:
The Y-coordinate location of the intersect point with the bias applied.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4679090.176380
Range_Domain_Maximum: 4689657.227170
Attribute:
Attribute_Label: Bias_Uncer
Attribute_Definition:
This is an estimate of the uncertainty of the bias corrected shoreline. It is the shoreline uncertainty and the bias uncertainty added in quadrature.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited
Overview_Description:
Entity_and_Attribute_Overview:
The entity and attribute information provided here describes the tabular data associated with the intersects needed to calculate long-term (greater than 50 years, and typically closer to 100 years) and short-term (approximately 30 years) shoreline change rates. Please review the individual attribute descriptions for detailed information. All calculations for length are in meter units and were based on the UTM zone 19N WGS 84 projection. This region has two shapefiles describing intersects, long-term and short-term.
Entity_and_Attribute_Detail_Citation: U.S. Geological Survey-ScienceBase
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey - GS ScienceBase
Contact_Address:
Address_Type: mailing and physical address
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: United States
Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov
Resource_Description:
The dataset contains the point intersections used for the analysis of shoreline data, (SHP and other shapefile components), browse graphic, and the FGDC CSDGM metadata in XML 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. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), and have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. 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 10.7.1
Format_Specification: Esri point shapefile
Format_Information_Content:
These files (.cpg, .dbf, .prj, .sbn, .sbx, .shp, .shp., and .shx) are a collection of files with a common filename prefix and must be downloaded and stored in the same directory. Together they are the components of the shapefile and include FGDC CSDGM-compliant metadata.
File_Decompression_Technique: no compression applied
Transfer_Size: 1
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://www.sciencebase.gov/catalog/file/get/61081421d34ef8d70565b1a5
Network_Resource_Name:
https://www.sciencebase.gov/catalog/item/61081421d34ef8d70565b1a5
Network_Resource_Name: https://doi.org/10.5066/P9YGIYFX
Access_Instructions:
The first link downloads all the files on the dataset landing page. The second link is to the dataset landing page where individual files can be viewed and downloaded. The third link is to the data release main landing page.
Fees: None
Technical_Prerequisites:
These data are available in a point 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: Marie K. Bartlett
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2306
Contact_Facsimile_Telephone: 508-547-2310
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
This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_P9YGIYFX/Boston_intersects_meta.html>
Generated by mp version 2.9.51 on Wed Jun 26 15:25:12 2024