OuterCapeCod_shorelines_uncertainty.dbf - uncertainty table for lidar-derived shorelines used when calculating rates in the Digital Shoreline Analysis System software for the Cape Cod region from Provincetown to the southern end of Monomoy Island, Massachusetts

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2013
Title:
OuterCapeCod_shorelines_uncertainty.dbf - uncertainty table for lidar-derived shorelines used when calculating rates in the Digital Shoreline Analysis System software for the Cape Cod region from Provincetown to the southern end of Monomoy Island, Massachusetts
Geospatial_Data_Presentation_Form: tabular digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2012-1183
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage:
<http://pubs.usgs.gov/of/2012/1183/data/OuterCapeCod/OuterCapeCod_shorelines_uncertainty.zip>
Larger_Work_Citation:
Citation_Information:
Originator: Theresa L. Smith
Originator: Emily A. Himmelstoss
Originator: E. Robert Thieler
Publication_Date: 2013
Title:
Massachusetts Shoreline Change Project: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the 2013 update
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2012-1183
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <http://pubs.usgs.gov/of/2012/1183/>
Description:
Abstract:
Due to continued coastal population growth and increased threats of erosion, current data on trends and rates of shoreline movement are required to inform shoreline and floodplain management. The Massachusetts Office of Coastal Zone Management launched the Shoreline Change Project in 1989 to identify erosion-prone areas of the coast. In 2001, a 1994 shoreline was added to calculate both long- and short-term shoreline change rates at 40-meter intervals along ocean-facing sections of the Massachusetts coast.

The Coastal and Marine Geology Program of the U.S. Geological Survey (USGS) in cooperation with the Massachusetts Office of Coastal Zone Management, has compiled reliable historical shoreline data along open-facing sections of the Massachusetts coast under the Massachusetts Shoreline Change Mapping and Analysis Project 2013 Update. Two oceanfront shorelines for Massachusetts (approximately 1,800 km in total length) were (1) delineated using 2008/09 color aerial orthoimagery, and (2) extracted from topographic LIDAR datasets (2007) obtained from NOAA's Ocean Service, Coastal Services Center. The new shorelines were integrated with existing Massachusetts Office of Coastal Zone Management and USGS historical shoreline data in order to compute long- and short-term rates using the latest version of the Digital Shoreline Analysis System (DSAS).

Purpose:
This table includes both measurement and positional errors associated with the 2000 and 2007 lidar shorelines for the Outer Cape Cod region from Provincetown to the southern end of Monomoy Island, Massachusetts, a proxy-datum bias value that corrects for the unidirectional offset between the mean high water (MHW) elevation of the lidar and the high water line (HWL) shorelines, as well as a measurement uncertainty in the total water level.

The table contains a common attribute with the M-values stored for the lidar shoreline data for each region of the the MA_shorelines.shp published within this report. These data are used in conjunction with the shoreline file to calculate rates of shoreline change.

Rates of long-term and short-term shoreline change were generated in a GIS using the Digital Shoreline Analysis System (DSAS) version 4.3. DSAS uses a measurement baseline method to calculate rate-of-change statistics. Transects are cast from the reference baseline to intersect each shoreline, establishing measurement points used to calculate shoreline change rates.

Supplemental_Information:
Cross-referenced citations are applicable to the dataset as a whole. Additional citations are located within individual process steps that pertain specifically to the method described in that step.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2013
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.246315
East_Bounding_Coordinate: -69.925831
North_Bounding_Coordinate: 42.082530
South_Bounding_Coordinate: 41.540240
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: lidar uncertainty
Theme_Keyword: proxy-datum bias
Theme_Keyword: high water line offsets
Theme_Keyword: high water line uncertainty
Theme_Keyword: Shoreline Change Rate
Theme_Keyword: Weighted Linear Regression Rate
Theme_Keyword: Endpoint Rate
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: Massachusetts Coastal Zone Management
Theme_Keyword: National Oceanic and Atmospheric Administration
Theme_Keyword: NOAA
Theme_Keyword: Coastal Services Center
Theme_Keyword: CSC
Theme_Keyword: U.S. Army Corps of Engineers
Theme_Keyword: USACE
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: Atlantic Coast
Place_Keyword: United States
Place_Keyword: New England
Place_Keyword: Massachusetts
Place_Keyword: Cape Cod
Place_Keyword: Provincetown
Place_Keyword: Truro
Place_Keyword: Chatham
Place_Keyword: Monomoy Island
Access_Constraints: None
Use_Constraints:
These data were automatically generated using the DSAS (version 4.3) software application and should only be used for purposes explicitly stated by the originating organization. Please recognize the U.S. Geological Survey (USGS) and the Massachusetts Office of Coastal Zone Management as the originators of this dataset.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Theresa Smith
Contact_Position: Contract Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: theresasmith@usgs.gov
Native_Data_Set_Environment:
Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.1850
Cross_Reference:
Citation_Information:
Originator: E.R. Thieler
Originator: T.L. Smith
Originator: Julia Knisel
Originator: D.W. Sampson
Publication_Date: 2013
Title:
Massachusetts Shoreline Change Mapping and Analysis Project, 2013 Update
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2012-1189
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <http://pubs.usgs.gov/of/2012/1189/>
Cross_Reference:
Citation_Information:
Originator: E.R. Thieler
Originator: E.A. Himmelstoss
Originator: J.L. Zichichi
Originator: A. Ergul
Publication_Date: 2009
Title:
Digital Shoreline Analysis System (DSAS) version 4.0: an ArcGIS extension for calculating shoreline change
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2008-1278
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Other_Citation_Details: Current version is 4.3
Online_Linkage:
<http://woodshole.er.usgs.gov/project-pages/dsas/version4/index.html>
Online_Linkage: <http://woodshole.er.usgs.gov/project-pages/dsas/>
Online_Linkage: <http://pubs.usgs.gov/of/2008/1278/>
Cross_Reference:
Citation_Information:
Originator: E. Robert Thieler
Originator: James F. O'Connell
Originator: Courtney A. Schupp
Publication_Date: 20010904
Title:
The Massachusetts Shoreline Change Project: 1800s to 1994 Technical Report
Series_Information:
Series_Name: Administrative Report
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <http://www.mass.gov/czm/hazards/pdf/sc_technical_report.pdf>
Online_Linkage:
<http://www.mass.gov/czm/hazards/shoreline_change/shorelinechangeproject.htm>
Cross_Reference:
Citation_Information:
Originator: Emily Himmelstoss
Originator: Meredith Kratzmann
Originator: Cheryl Hapke
Originator: E. Robert Thieler
Publication_Date: 2010
Title:
National Assessment of Shoreline Change: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the New England and Mid-Atlantic Coasts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2010-1119
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: <http://pubs.usgs.gov/of/2010/1119/>
Cross_Reference:
Citation_Information:
Originator: Cheryl Hapke
Originator: Emily Himmelstoss
Originator: Meredith Kratzmann
Originator: Jeffrey List
Originator: E. Robert Thieler
Publication_Date: 2010
Title:
National Assessment of Shoreline Change: Historical Shoreline Change along the New England and Mid-Atlantic Coasts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2010-1118
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: <http://pubs.usgs.gov/of/2010/1118/>
Cross_Reference:
Citation_Information:
Originator: E.R. Thieler
Originator: E.A. Himmelstoss
Originator: J.L. Zichichi
Originator: A. Ergul
Publication_Date: 2009
Title:
Digital Shoreline Analysis System (DSAS) version 4.0 - An ArcGIS extension for calculating shoreline change
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2008-1278
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Other_Citation_Details: Current version of software at time of use was 4.3
Online_Linkage: <http://woodshole.er.usgs.gov/project-pages/dsas/>
Online_Linkage:
<http://woodshole.er.usgs.gov/project-pages/dsas/version4/index.html>
Online_Linkage: <http://pubs.usgs.gov/of/2008/1278/>
Cross_Reference:
Citation_Information:
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC)
Publication_Date: Unknown
Title:
1996-2000 NOAA/USGS/NASA Airborne LiDAR Assessment of Coastal Erosion (ALACE) Project for the U.S. Coastline
Publication_Information:
Publication_Place: Charleston, SC
Publisher: NOAA's Ocean Service, Coastal Services Center (CSC)
Other_Citation_Details: <http://www.csc.noaa.gov/ldart>
Cross_Reference:
Citation_Information:
Originator:
JALBTCX (Joint Airborne Lidar Bathymetry Technical Center of eXpertise)
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC)
Publication_Date: 20110621
Title:
2007 US Army Corps of Engineers (USACE) Topo/Bathy Lidar: Maine, Massachusetts, and Rhode Island
Publication_Information:
Publication_Place: Charleston, SC
Publisher: NOAA's Ocean Service, Coastal Services Center (CSC)
Other_Citation_Details: <http://www.csc.noaa.gov/ldart>

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The attributes in this table record positional and measurement uncertainties and datum offsets calculated during the process of extracting an operational mean high water shoreline from the lidar data as described in the process steps. The field names are based on the requirements for use within the Digital Shoreline Analysis System (DSAS) software (USGS Open-File Report 2008-1278).
Logical_Consistency_Report:
Each row contains data associated with an individual vertex point along the lidar shoreline in the Outer Cape Cod region of the MA_shorelines.shp.
Completeness_Report:
The table only contains data where a mean high water shoreline point could be extracted from the lidar.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The average lidar shoreline positional uncertainty for the 2000 and 2007 data is plus or minus 1.27 meters. Please visit the 'Estimation of Shoreline Position Uncertainty' section in the corresponding USGS Open-File Report associated with this data, "Massachusetts Shoreline Change Mapping and Analysis Project, 2013 Update" (<http://pubs.usgs.gov/of/2012/1189>) for a complete explanation of the measurement uncertainties associated with these shorelines.
Lineage:
Process_Step:
Process_Description:
An operational Mean High Water (MHW) shoreline was extracted from each lidar survey (2000 and 2007) using a method similar to the one developed by Stockdon et al. (2002). Shorelines were extracted from cross-shore profiles which consist of bands of lidar data 2 m wide in the alongshore direction and spaced every 40 m along the coast. For each profile, the seaward sloping foreshore points were identified and a linear regression was fit through them. The regression was evaluated at the operational MHW elevation to yield the cross-shore position of the MHW shoreline. If the MHW elevation was obscured by water points, or if a data gap was present at MHW, the linear regression was simply extrapolated to the operational MHW elevation. A lidar positional uncertainty associated with this point was also computed. The horizontal offset between the datum-based lidar MHW shoreline and the proxy-based historical shorelines nearly always acts in one direction and the "bias" value was computed at each profile (Ruggiero and List, 2009). In addition an uncertainty associated with the bias was also computed, which can also be thought of as the uncertainty of the HWL shorelines due to water level fluctuations.

Repeating this procedure at successive profiles generated a series of X,Y points that contain a lidar positional uncertainty, a bias, and a bias uncertainty value for the 2000 and 2007 survey. The values from 2000 and 2007 are averaged together to obtain a single positional uncertainty, bias and bias uncertainty value at each cross shore profile location.

Ruggiero, P. and List, J.H., 2009. Improving Accuracy and Statistical Reliability of Shoreline Position and Change Rate Estimates. Journal of Coastal Research: v.25, n.5, pp.1069-1081.

Stockdon, H.F., Sallenger, A.H., List, J.H., and Holman, R.A., 2002. Estimation of Shoreline Position and Change using Airborne Topographic Lidar Data: Journal of Coastal Research, v.18, n.3, pp.502-513.

Process_Date: 2011
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Amy Farris
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: afarris@usgs.gov
Process_Step:
Process_Description:
The series of operational MHW points extracted from the cross-shore lidar profiles were converted to a .dbf file storing the lidar positional uncertainty, the bias correction value, and the uncertainty of the bias correction for each point of the original lidar data. During the rate calculation process DSAS uses linear referencing to retrieve the uncertainty and bias values stored in the associated table.

For a detailed explanation of the method used to store bias and uncertainty data in a table, please refer to Appendix 2, section 12.3 in the DSAS user guide:

Himmelstoss, E.A. 2009. "DSAS 4.0 Installation Instructions and User Guide" in: Thieler, E.R., Himmelstoss, E.A., Zichichi, J.L., and Ergul, Ayhan. 2009. Digital Shoreline Analysis System (DSAS) version 4.0 - An ArcGIS extension for calculating shoreline change: U.S. Geological Survey Open-File Report 2008-1278. <http://woodshole.er.usgs.gov/project-pages/dsas/version4/images/pdf/DSASv4.pdf>

Process_Date: 2011
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Emily Himmelstoss
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2262
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: ehimmelstoss@usgs.gov
Process_Step:
Process_Description:
The shoreline uncertainty table (.dbf) was imported into a personal geodatabase in ArcCatalog v10 by right-clicking on the geodatabase > Import > Table (single). The uncertainty table was used with the Digital Shoreline Analysis System (DSAS) v4.3 software to perform rate calculations.

This process step and all subsequent process steps were performed by the same person - Theresa Smith.

Process_Date: 2012
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Theresa Smith
Contact_Organization: U.S. Geological Survey
Contact_Position: Contract Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: theresasmith@usgs.gov
Process_Step:
Process_Description:
The shoreline uncertainty table was exported from the personal geodatabase back to a stand-alone dBase file using ArcCatalog v10 by right-clicking on the database file > Export > To dBase file (single) for publication purposes.
Process_Date: 2012

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: OuterCapeCod_shorelines_uncertainty
Entity_Type_Definition: uncertainty table
Entity_Type_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: OID
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: ID
Attribute_Definition:
This field is case-sensitive and name specific. The field contains a cross-shore lidar profile ID stored as the M-value (measure value) at each vertex in the calibrated shoreline route. This serves as the link between the lidar shoreline and the uncertainty table and must be a unique number at each point.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 4431
Attribute:
Attribute_Label: UNCY
Attribute_Definition:
This field heading is case-sensitive and name specific. The field contains the plus/minus horizontal uncertainty (meters) in the lidar shoreline position at each cross-shore beach profile. For details on the components that make up this uncertainty, refer to the Methods section of USGS Open-File report 2010-1118 cross-referenced in the metadata.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.83
Range_Domain_Maximum: 5.16
Attribute_Units_of_Measure: meters (UTM zone 19N WGS 84)
Attribute:
Attribute_Label: BIAS
Attribute_Definition:
This field heading is case-sensitive and name specific. The field contains a proxy-datum bias value describing the unidirectional horizontal offset (in meters) between the MHW elevation of the lidar data and HWL shoreline positions.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6.7
Range_Domain_Maximum: 8.34
Attribute_Units_of_Measure: meters (UTM zone 19N WGS 84)
Attribute:
Attribute_Label: UNCYB
Attribute_Definition:
This field heading is case-sensitive and name specific. The field contains the uncertainty in the calculated proxy-datum bias value (BIAS) in meters.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3.46
Range_Domain_Maximum: 3.893
Attribute_Units_of_Measure: meters (UTM zone 19N WGS 84)

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700
Contact_Facsimile_Telephone: 508-457-2310
Resource_Description: Downloadable data.
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.

Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: dBase
Format_Version_Number: IV
Format_Specification: .dbf file format storing structured attribute data
Format_Information_Content:
This dBase file contains lidar positional and measurement uncertainties, proxy-datum bias offset values, and total water level uncertainties used when calculating rates in the Digital Shoreline Analysis System (DSAS) software
File_Decompression_Technique: no compression applied
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://pubs.usgs.gov/of/2012/1183/data/OuterCapeCod/OuterCapeCod_shorelines_uncertainty.zip>
Access_Instructions: Data are downloadable via the World Wide Web (WWW).
Fees: None
Technical_Prerequisites:
These data are available in dBase file format. The user must have software capable of reading or importing the dBase formatted data file.

Metadata_Reference_Information:
Metadata_Date: 20130205
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Theresa Smith
Contact_Organization: U.S. Geological Survey
Contact_Position: Contract Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: theresasmith@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

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