Intersects for Nantucket, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.0

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey
Publication_Date: 2019
Title:

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9RRBEYK

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/P9RRBEYK
Online_Linkage:

https://www.sciencebase.gov/catalog/item/5c65ab2be4b0fe48cb38ff4e

Larger_Work_Citation:

Citation_Information:

Originator: Emily A. Himmelstoss
Originator: Amy S. Farris
Originator: Kathryn M. Weber
Originator: Rachel E. Henderson
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: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9RRBEYK

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

suggested citation: Himmelstoss, E.A., Farris, A.S., Weber, K.M., and Henderson, R.E., 2019, 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: U.S. Geological Survey data release, https://doi.org/10.5066/P9RRBEYK

Online_Linkage: https://doi.org/10.5066/P9RRBEYK
Online_Linkage:

https://www.sciencebase.gov/catalog/item/5be5857ce4b0b3fc5cf8c6ca

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 shoreline from 1994 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 2008-9 color aerial orthoimagery and 2007 topographic lidar datasets obtained from the National Oceanic and Atmospheric Administration's Ocean Service, Coastal Services Center. This 2018 data release includes rates that incorporate two new mean high water (MHW) shorelines for the Massachusetts coast extracted from lidar data collected between 2010 and 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. 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 USACE 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 the South Coast (around Buzzards Bay to the Rhode Island Border) is from 2013-14 lidar data collected by the (USGS) Coastal and Marine Geology Program. This 2018 update of the rate of shoreline change in Massachusetts includes two types of rates. Some of the rates include a proxy-datum bias correction, this is indicated in the filename with “PDB”. The rates that do not account for this correction have “NB” in their file names. The proxy-datum bias is applied because in some areas a proxy shoreline (like a High Water Line shoreline) has a bias when compared to a datum shoreline (like a Mean High Water shoreline). In areas where it exists, this bias should be accounted for when calculating rates using a mix of proxy and datum shorelines. 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 v5.0 at the intersection of shoreline and transect locations. A reference baseline was used as the originating point for the orthogonal transects cast by the DSAS software. These point data contain identification information related to the DSAS transect (TransectID, TransOrder) as well as the shoreline (ShorelineID, Uncertainty). 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.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2019

Currentness_Reference: publication date

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -70.319516
East_Bounding_Coordinate: -69.959170
North_Bounding_Coordinate: 41.391267
South_Bounding_Coordinate: 41.237358

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

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Atlantic Coast
Place_Keyword: United States
Place_Keyword: North America
Place_Keyword: Massachusetts
Place_Keyword: Nantucket

Access_Constraints: None.
Use_Constraints:

These data were automatically generated using the DSAS v5.0 software applications. 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: Emily A. Himmelstoss

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 2262
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: ehimmelstoss@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name:

https://www.sciencebase.gov/catalog/file/get/5c65ab2be4b0fe48cb38ff4e/?name=Nantucket_intersects_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: 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://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

Online_Linkage: https://doi.org/10.3133/ofr20181179
Online_Linkage: https://woodshole.er.usgs.gov/project-pages/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

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 v5.0 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. See https://doi.org/10.5066/P9O7S72B

Lineage:

Process_Step:

Process_Description:

Process_Description: Transect features generated in a personal geodatabase using DSAS v5.0.20180906.1125. Parameters Used: baseline layer=Nantucket_north_baseline, baseline group field=NULL, transect spacing=50 meters, search distance=1000 meters, land direction=right, shoreline intersection=seaward, File produced = Nantucket_north_transect. For additional details on these parameters, please see the DSAS help file distributed with the DSAS software, or visit the USGS website at: https://woodshole.er.usgs.gov/project-pages/DSAS/.

This process step and all subsequent process steps were performed by the same person - Emily A. Himmelstoss.

Process_Date: 2018
Process_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: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA

Contact_Voice_Telephone: 508-548-8700 x 2262
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: ehimmelstoss@usgs.gov

Process_Step:

Process_Description:

Process_Description: Transect features generated in a personal geodatabase using DSAS v5.0.20180906.1125. Parameters Used: baseline layer=Nantucket_south_baseline, baseline group field=NULL, transect spacing=50 meters, search distance=1000 meters, land direction=right, shoreline intersection=seaward, File produced = Nantucket_south_transect.

Process_Date: 2018

Process_Step:

Process_Description:

Some transects were manually edited for length, moved, or deleted in an edit session using standard editing tools in ArcMap v10.5.1

Process_Date: 2018

Process_Step:

Process_Description:

Shoreline intersects and rate calculations performed for long-term rates with bias. Parameters Used: shoreline layer=Nantucket_LT_shorelines, shoreline date field=DSAS_date, shoreline uncertainty field name=Uncy, the default accuracy=4.4 meters, shoreline intersection=seaward, stats calculations=[LRR], shoreline threshold=3, confidence interval=90%. Files produced = Nantucket_PDB_LT_rates_20180406_150209, Nantucket_PDB_LT_intersect_20180406_150209.

Process_Date: 2018

Process_Step:

Process_Description:

Shoreline intersects and rate calculations performed for long-term rates without bias. Parameters Used: shoreline layer=Nantucket_LT_shorelines, shoreline date field=DSAS_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 = Nantucket_NB_LT_rates_20180406_134610, Nantucket_NB_LT_intersect_20180406_134610.

Process_Date: 2018

Process_Step:

Process_Description:

Shoreline intersects and rate calculations performed for short-term rates with bias. Parameters Used: shoreline layer=Nantucket_ST_shorelines, shoreline date field=DSAS_date, shoreline uncertainty field name=Uncy, the default accuracy=4.4 meters, shoreline intersection=seaward, stats calculations=[LRR], shoreline threshold=3, confidence interval=90%. Files produced = Nantucket_PDB_ST_rates_20180406_143249, Nantucket_PDB_ST_intersect_20180406_143249.

Process_Date: 2018

Process_Step:

Process_Description:

Shoreline intersects and rate calculations performed for short-term rates without bias. Parameters Used: shoreline layer=Nantucket_ST_shorelines, shoreline date field=DSAS_date, shoreline uncertainty field name=Uncy, the default accuracy=4.4 meters, shoreline intersection=seaward, stats calculations=[LRR], shoreline threshold=3, confidence interval=90%. Files produced = Nantucket_NB_ST_rates_20180406_140128, Nantucket_NB_ST_intersect_20180406_140128.

Process_Date: 2018

Process_Step:

Process_Description:

The intersect feature classes were exported to shapefiles in ArcMap v10.5 by right-clicking the transect layer > data > export data.

Process_Date: 2018

Process_Step:

Process_Description:

The exported intersect shapefiles were projected in Esri's ArcToolbox (v10.5) > Data Management Tools > Projections and Transformations > Project. Parameters: input projection - UTM zone 19N (WGS84); output projection - geographic coordinates (WGS84); transformation = none.

Process_Date: 2018

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: 7870

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0000001
Longitude_Resolution: 0.0000001
Geographic_Coordinate_Units: Decimal degrees

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: Nantucket_south_PDB_LT_intersects.shp
Entity_Type_Definition:

The intersection points are generated by DSAS where each DSAS generated transect crosses a shoreline. These intersections represent the shorelines used to compute long-term rates where the proxy-datum bias correction has been applied.

Entity_Type_Definition_Source: U.S. Geological Survey

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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
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: U.S. Geological Survey
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: U.S. Geological Survey
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: U.S. Geological Survey
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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 322800
Range_Domain_Maximum: 422900

Attribute:

Attribute_Label: IntersectY
Attribute_Definition:

The Y-coordinate location in northings of the intersect point in WGS84 UTM19N.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 4565600
Range_Domain_Maximum: 4748600

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: U.S. Geological Survey
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.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited

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: U.S. Geological Survey
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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 322800
Range_Domain_Maximum: 422900

Attribute:

Attribute_Label: BIAS_Y
Attribute_Definition:

The Y-coordinate location of the intersect point with the bias applied.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 4565600
Range_Domain_Maximum: 4748600

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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited

Detailed_Description:

Entity_Type:

Entity_Type_Label: Nantucket_north_NB_LT_intersects.shp
Entity_Type_Definition:

Entity_Type_Definition_Source: U.S. Geological Survey

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: Feature geometry.
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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimitted

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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimitted

Attribute:

Attribute_Label: ShorelineI
Attribute_Definition:

Date of shoreline position; date of survey as determined from shoreline layer.

Attribute_Definition_Source: U.S. Geological Survey
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: U.S. Geological Survey
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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 322800
Range_Domain_Maximum: 422900

Attribute:

Attribute_Label: IntersectY
Attribute_Definition:

The Y-coordinate location in northings of the intersect point in WGS84 UTM19N.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 4565600
Range_Domain_Maximum: 4748600

Attribute:

Attribute_Label: Uncertaint
Attribute_Definition:

The uncertainty of the shoreline position at the intersect point, as defined by the positional uncertainty attribute value (DSAS_uncy) of the shoreline.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited

Detailed_Description:

Entity_Type:

Entity_Type_Label: Nantucket_south_PDB_ST_intersects.shp
Entity_Type_Definition:

The intersection points are generated by DSAS where each DSAS generated transect crosses a shoreline. These intersections represent the shorelines used to compute short-term rates where the proxy-datum bias correction has been applied.

Entity_Type_Definition_Source: U.S. Geological Survey

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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: unlimited

Attribute:

Attribute_Label: BaselineID
Attribute_Definition:

Attribute_Definition_Source: U.S. Geological Survey
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: U.S. Geological Survey
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: U.S. Geological Survey
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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 322800
Range_Domain_Maximum: 422900

Attribute:

Attribute_Label: IntersectY
Attribute_Definition:

The Y-coordinate location in northings of the intersect point in WGS84 UTM19N.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 4565600
Range_Domain_Maximum: 4748600

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: U.S. Geological Survey
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.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited

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: U.S. Geological Survey
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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 322800
Range_Domain_Maximum: 422900

Attribute:

Attribute_Label: BIAS_Y
Attribute_Definition:

The Y-coordinate location of the intersect point with the bias applied.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 4565600
Range_Domain_Maximum: 4748600

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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited

Detailed_Description:

Entity_Type:

Entity_Type_Label: Nantucket_north_NB_ST_intersects.shp
Entity_Type_Definition:

Entity_Type_Definition_Source: U.S. Geological Survey

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: Feature geometry.
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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimitted

Attribute:

Attribute_Label: BaselineID
Attribute_Definition:

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimitted

Attribute:

Attribute_Label: ShorelineI
Attribute_Definition:

Date of shoreline position; date of survey as determined from shoreline layer.

Attribute_Definition_Source: U.S. Geological Survey
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: U.S. Geological Survey
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: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 322800
Range_Domain_Maximum: 422900

Attribute:

Attribute_Label: IntersectY
Attribute_Definition:

The Y-coordinate location in northings of the intersect point in WGS84 UTM19N.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 4565600
Range_Domain_Maximum: 4748600

Attribute:

Attribute_Label: Uncertaint
Attribute_Definition:

The uncertainty of the shoreline position at the intersect point, as defined by the positional uncertainty attribute value (DSAS_uncy) of the shoreline.

Attribute_Definition_Source: U.S. Geological Survey
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, as well as intersects that incorporate the known unidirectional offset between proxy-based high water line features and datum-based mean high water line features (the proxy-datum bias), and intersects that did not have the necessary information to correct for this offset (no bias). 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 four shapefiles describing intersects; long-term with bias, long-term without bias, short-term with bias, and short-term without bias.

Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey - 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 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. 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 10.5
Format_Specification: Esri point shapefile
Format_Information_Content:

These files (.cpg, .dbf, .prj, .sbn, .sbx, .shp, .shp., xml, 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: 2

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/file/get/5c65ab2be4b0fe48cb38ff4e

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/5c65ab2be4b0fe48cb38ff4e

Network_Resource_Name: https://doi.org/10.5066/P9RRBEYK

Access_Instructions:

The first link downloads all the data on the landing page, the second link is to the dataset landing page, and the third link is to the main landing page of the data release.

Digital_Form:

Digital_Transfer_Information:

Format_Name: WMS
Format_Version_Number: 1.3.0
Format_Specification: Web Mapping Services 1.3.0

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalogMaps/mapping/ows/5c65ab2be4b0fe48cb38ff4e?service=wms&request=getcapabilities&version=1.3.0

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/5c65ab2be4b0fe48cb38ff4e

Network_Resource_Name: https://doi.org/10.5066/P9RRBEYK

Access_Instructions:

The first link is for the Web Mapping Services, the second link is to the dataset landing page, and the third link is to the main landing page of the data release.

Digital_Form:

Digital_Transfer_Information:

Format_Name: WFS
Format_Version_Number: 1.0.0
Format_Specification: Web Feature Services 1.0.0

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalogMaps/mapping/ows/5c65ab2be4b0fe48cb38ff4e?service=wfs&request=getcapabilities&version=1.0.0

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/5c65ab2be4b0fe48cb38ff4e

Network_Resource_Name: https://doi.org/10.5066/P9RRBEYK

Access_Instructions:

The first link is for the Web Feature Services, the second link is to the dataset landing page, and the third link is to the main landing page of the data release.

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.

Intersects for Nantucket, Massachusetts, generated to calculate shoreline change rates using the Digital Shoreline Analysis System version 5.0

Metadata: