Baseline for the Virginia coastal region, 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: Marie K. Bartlett
Publication_Date: 20230526
Title:
Baseline for the Virginia coastal region, 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/P9DHOFXU
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher:
U.S. Geological Survey, Coastal and Marine Hazards and Resources Program
Online_Linkage: https://doi.org/10.5066/P9DHOFXU
Online_Linkage:
https://www.sciencebase.gov/catalog/item/641c63e4d34e807d39b63fc6
Larger_Work_Citation:
Citation_Information:
Originator: Marie K. Bartlett
Originator: Rachel E. Henderson
Originator: Amy S. Farris
Publication_Date: 2023
Title:
USGS National Shoreline Change — A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for Coastal Virginia from the 1840s to 2010s
Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9DHOFXU
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Bartlett, M.K., Henderson R.E., and Farris, A.S., 2023, USGS National Shoreline Change - A GIS compilation of vector shorelines and associated shoreline change data for coastal Virginia from the 1840s to 2010s: U.S. Geological Survey data release, https://doi.org/10.5066/P9DHOFXU.
Online_Linkage: https://doi.org/10.5066/P9DHOFXU
Online_Linkage:
https://www.sciencebase.gov/catalog/item/641b186fd34e4c337f0c1de3
Description:
Abstract:
The U.S. Geological Survey (USGS) has compiled national shoreline data for more than 20 years to document coastal change and serve the needs of research, management, and the public. Maintaining a record of historical shoreline positions is an effective method to monitor national shoreline evolution over time, enabling scientists to identify areas most susceptible to erosion or accretion. These data can help coastal managers and planners understand which areas of the coast are vulnerable to change.
This data release includes a compilation of previously published historical shoreline positions for Virginia spanning 148 years (1849-1997), and two new mean high water (MHW) shorelines extracted from lidar data collected in 2010 and 2017. These data provide a standardized shoreline database for the state. This release includes both long-term (up to 168 years) and short term (~20 years) rates. Files associated with the long-term and short-term rates are appended with "LT" and "ST", respectively. A proxy-datum bias reference line that accounts for the positional difference in a proxy shoreline (e.g. High Water Line (HWL) shoreline) and a datum shoreline (e.g. MHW shoreline) is also included in this release.
Purpose:
This dataset includes a reference baseline used by the Digital Shoreline Analysis System (DSAS) to calculate rate-of-change statistics. This baseline layer serves as the starting point for orthogonally-oriented transects generated by the DSAS application. The transects intersect each shoreline and establish measurement points used to calculate shoreline change rates.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2022
Currentness_Reference: Baseline was created in 2022
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -76.0825
East_Bounding_Coordinate: -75.2367
North_Bounding_Coordinate: 38.0270
South_Bounding_Coordinate: 36.4961
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: environment
Theme_Keyword: oceans
Theme_Keyword: geoscientificInformation
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Baseline
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: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: Atlantic Coast
Theme_Keyword: North America
Theme_Keyword: Mid-Atlantic
Theme_Keyword: Virginia
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: coastal processes
Theme_Keyword: geospatial datasets
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:641c63e4d34e807d39b63fc6
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Atlantic Coast
Place_Keyword: United States
Place_Keyword: Virginia
Access_Constraints: None.
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset. These data are not to be used for navigation.
Point_of_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
Address: 384 Woods Hole Rd
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Contact_Voice_Telephone: 508-457-8700 x2306
Contact_Electronic_Mail_Address: mbartlett@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
https://www.sciencebase.gov/catalog/file/get/641c63e4d34e807d39b63fc6?name=VA_baseline_browse.JPG
Browse_Graphic_File_Description: Map view of dataset
Browse_Graphic_File_Type: JPEG
Native_Data_Set_Environment: Microsoft Windows 10 Esri ArcGIS 10.7.1
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
Originator: E. Robert Thieler
Publication_Date: 2018
Title:
Digital Shoreline Analysis System (version 5.1): U.S. Geological Survey Software
Geospatial_Data_Presentation_Form: publication
Series_Information:
Series_Name: software release
Issue_Identification: version 5.1
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Use the first two links to access the software. The third link directs to the DSAS project page. Current software at time of use was 5.1.
Online_Linkage: https://doi.org/10.5066/P9VW42I0
Online_Linkage: https://code.usgs.gov/cch/dsas/
Online_Linkage:
https://www.usgs.gov/centers/whcmsc/science/digital-shoreline-analysis-system-dsas
Cross_Reference:
Citation_Information:
Originator: Emily A. Himmelstoss
Originator: Rachel E. Henderson
Originator: Meredith G. Kratzmann
Originator: Amy S. Farris
Publication_Date: 20211019
Title: Digital Shoreline Analysis System (version 5.1) User Guide
Geospatial_Data_Presentation_Form: publication
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2021-1091
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Use the first two access the user guide. The third link directs to the DSAS project page.
Online_Linkage: https://doi.org/10.3133/ofr20211091
Online_Linkage: https://pubs.er.usgs.gov/publication/ofr20211091
Online_Linkage:
https://www.usgs.gov/centers/whcmsc/science/digital-shoreline-analysis-system-dsas
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 in this layer are based on the requirements for use within the Digital Shoreline Analysis System (DSAS) software.
Logical_Consistency_Report:
Each polyline has a unique identification attribute (ID). This field is used by the Digital Shoreline Analysis System (DSAS) to designate the alongshore order of baselines, if more than one baseline exists.
Completeness_Report:
This baseline file is complete and contains the baseline segment(s) used to cast transects along sections of the coastal region where shoreline position data were available to calculate either a short- or long-term rate.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The baseline serves as a reference point for transects cast by the Digital Shoreline Analysis System (DSAS) software. It does not correspond to any real-world feature.
Lineage:
Process_Step:
Process_Description:
A polyline, midshore baseline was constructed using standard feature creation tools in Esri's ArcMap v10.7.1. The baseline was positioned to follow the overall orientation of the shorelines alongshore. This was done so that the transects, which are generated by the DSAS software and extend from the baseline, would intersect roughly perpendicular to the general trend of the shorelines. The baseline was constructed in UTM Zone 18N (WGS 84) coordinate system. This process step and all subsequent process steps were performed by the same person - Marie K. Bartlett
Process_Date: 2022
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: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x 2306
Contact_Electronic_Mail_Address: mbartlett@usgs.gov
Process_Step:
Process_Description:
The baseline feature class was imported into a personal geodatabase in ArcCatalog v10.7.1 by right-clicking on the geodatabase > Import for use as the input within the Digital Shoreline Analysis System (DSAS) v.5.1 software to generate transects and perform rate calculations.
Process_Date: 2022
Process_Step:
Process_Description:
Required fields for DSAS were added using the DSAS Attribute Automator tool. These fields include ID, and DSAS_group. The baseline feature class was used along with the shorelines file (see larger work citation, VA_Shorelines.shp) as the input within the Digital Shoreline Analysis System (DSAS) software to generate transects and perform rate calculations.
Process_Date: 2022
Process_Step:
Process_Description:
The baseline feature class was exported from a personal geodatabase to a shapefile in ArcCatalog v10.7.1 for publication by right-clicking on the data layer > Export > To shapefile (single).
Process_Date: 2022
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: 14
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 18
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -75.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.6096
Ordinate_Resolution: 0.6096
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: WGS_1984
Ellipsoid_Name: WGS_84
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257223563
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: VA_Baseline.shp Attribute Table
Entity_Type_Definition:
Reference baseline used by the Digital Shoreline Analysis System (DSAS) to calculate rate-of-change statistics.
Entity_Type_Definition_Source: U.S. Geological Survey (USGS)
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: Feature geometry. The baseline is a polyline shapefile.
Attribute:
Attribute_Label: DSAS_ID
Attribute_Definition:
Field required by the Digital Shoreline Analysis System (DSAS) software. This field is manually edited to ensure baseline segment numbers occur in sequential order alongshore. DSAS uses this value to determine the ordering sequence of transects when the baseline feature contains multiple segments.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 14
Attribute:
Attribute_Label: DSAS_group
Attribute_Definition:
This optional field is a way to aggregate baseline segments on the basis of physical variations alongshore (for example, tidal inlets, change in coastal type, or hard stabilization features). Baseline segments are sorted into groups and the groups are assigned an ID value. Statistics are reported by group in the DSAS summary text file once rates are calculated.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 8
Attribute:
Attribute_Label: DSAS_search
Attribute_Definition:
The search distance field is an optional field that represents the (user defined) distance, in meters, that DSAS will use to search for shorelines, extending out from either side of the baseline. The distance value can be unique for each baseline segment depending on the organization of shorelines with respect to the baseline. Values populated in this field will override the "Maximum Search Distance From Baseline" value entered in Cast Transects settings.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 400
Range_Domain_Maximum: 2200
Attribute:
Attribute_Label: SHAPE_Leng
Attribute_Definition: Length of feature in meter units.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1348.168
Range_Domain_Maximum: 50542.346
Overview_Description:
Entity_and_Attribute_Overview:
The entity and attribute information provided here describes the tabular data associated with the dataset. Please review the individual attribute descriptions for detailed information.
Entity_and_Attribute_Detail_Citation: U.S. Geological Survey
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: USGS ScienceBase
Contact_Address:
Address_Type: mailing 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 polyline shapefile (VA_baseline.shp and other shapefile components) of the Virginia baseline, browse graphic (VA_baseline_browse.JPG), 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 polyline shapefile
Format_Information_Content:
These files (.cpg, .dbf, .prj, .sbn, .sbx, .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. Additional files of the same name included are FGDC CSDGM-compliant metadata in XML format.
Transfer_Size: 0.01
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://www.sciencebase.gov/catalog/item/641c63e4d34e807d39b63fc6
Fees: None.
Metadata_Reference_Information:
Metadata_Date: 20230526
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 Rd
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2306
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.
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_P9DHOFXU/VA_Baseline.html>
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