CapeCodBay_intersects_LTw.shp - Digital Shoreline Analysis System version 4.3 shoreline intersection points used to calculate long-term shoreline change statistics for the Cape Cod Bay coastal region from Cape Cod Canal in Sandwich to Long Point in Provincetown

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey

Publication_Date: 2013

Title:

CapeCodBay_intersects_LTw.shp - Digital Shoreline Analysis System version 4.3 shoreline intersection points used to calculate long-term shoreline change statistics for the Cape Cod Bay coastal region from Cape Cod Canal in Sandwich to Long Point in Provincetown

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2012-1183

Publication_Information:

Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage:

<http://pubs.usgs.gov/of/2012/1183/data/CapeCodBay/CapeCodBay_intersects_LTw.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 dataset contains the measurement locations used by the Digital Shoreline Analysis System (DSAS) software to compute long-term rate of change statistics for the Cape Cod Bay region of Massachusetts. The points represent the individual shoreline locations along each measurement transect generated by DSAS. The data can be used to identify the number of shorelines used to compute rates at a given location as well as the specific shoreline dates. Long-term linear regression statistics were calculated with all of the historical shorelines compiled for the Massachusetts Office of Coastal Zone Management Shoreline Change Project.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2013

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -70.498226

East_Bounding_Coordinate: -69.994399

North_Bounding_Coordinate: 42.066286

South_Bounding_Coordinate: 41.704890

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: Esri point shapefile

Theme_Keyword: Shoreline

Theme_Keyword: Historic Shoreline

Theme_Keyword: long-term

Theme_Keyword: Shoreline Change Rate

Theme_Keyword: Erosion

Theme_Keyword: Accretion

Theme_Keyword: Intersects

Theme_Keyword: Measurement Locations

Theme_Keyword: Baseline

Theme_Keyword: Transect

Theme_Keyword: Digital Shoreline Analysis System

Theme_Keyword: DSAS

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: Coastal and Marine Geology Program

Theme_Keyword: CMGP

Theme_Keyword: Woods Hole Coastal and Marine Science Center

Theme_Keyword: WHCMSC

Theme_Keyword: Massachusetts Office of Coastal Zone Management

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: oceans

Theme_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: Cape Cod Bay

Place_Keyword: Cape Cod Canal

Place_Keyword: Sandwich

Place_Keyword: Provincetown

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>

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The attributes of this dataset are based on the field requirements of the Digital Shoreline Analysis System and were automatically generated by the software during the calculation of shoreline change rates performed by the software.

Logical_Consistency_Report:

These data were generated using DSAS v.4.3, an automated software program which does not perform checks for fidelity of the input features. The measurement locations represented by this point file are generated during the rate calculation process, after editing of the transects is complete.

Completeness_Report:

This dataset contains the measurement locations automatically established during the calculation of rates by the DSAS software application and were used to calculate long-term shoreline change rates for the region. Additional transects (and resulting measurement locations) may have been generated but did not intersect the minimum requirement of three shorelines to calculate long-term rates. These data are part of a state-wide assessment of shoreline change that includes over 26,500 individual transect locations that were used to compute both short- and long-term rates of change, based on almost 9200 linear kilometers of historical shoreline position data. It is very likely that some gross errors or blunders were introduced during compilation and analysis of this large amount of information. Such errors have been described in the context of shoreline change mapping as coarse errors (Fenster and others, 2001) and can generally be considered to affect only a very small percentage of the overall dataset.

Fenster, M.S., Dolan, R., and Morton, R.A., 2001, Coastal storms and shoreline change: signal or noise?: Journal of Coastal Research, v. 17, no. 3, p. 714-720.

Lineage:

Process_Step:

Process_Description:

Rate Calculations Performed using DSAS v.4.3 for ArcMap v.10. Parameters Used: shoreline layer=CapeCodBay_shorelines, shoreline date field=Date_, shoreline uncertainty field name=Uncy (additional shoreline data stored in CapeCodBay_shorelines_uncertainty.dbf), the default accuracy=10.8 meters, shoreline intersection parameters=nearest, stats calculations=[Shoreline Change Envelope (SCE), Net Shoreline Movement (NSM), Linear Regression Rate (LRR)], shoreline threshold=3, confidence interval=90%, Output rate table name=CapeCodBay_transects_rates_20121011_172308.dbf. Output intersects table name= CapeCodBay_transects_intersect_20121011_172308.dbf. This process step and all subsequent process steps were performed by Theresa Smith.

Process_Date: 20121011

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Theresa Smith

Contact_Organization: U.S. Geological Survey

Contact_Position: Contract Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: theresasmith@usgs.gov

Process_Step:

Process_Description:

The shoreline intersects output table contains X- and Y-coordinate information for each shoreline measurement on DSAS transects. This table (CapeCodBay_transects_intersect_20121011_172308.dbf) was used to create a temporary event theme to preview the transect/shoreline measurement locations in ArcMap. The intersects file was right-clicked in the ArcMap (v.10) table of contents. "Display XY data..." was chosen from the pop-up menu. A new Display XY Data window opens and the following parameters were entered: X Field: IntersectX; Y Field; Intersect Y; Z Field: <None>; Coordinate System of Input Coordinates: NAD_1983_Massachusetts_Mainland_FIPS_2001.

Process_Date: 20121011

Process_Step:

Process_Description:

The temporary event theme is saved to a shapefile by right-clicking the CapeCodBay_transects_intersect_20121011_172308 Events layer in the table of contents (ArcMap 10) and choosing Data > Export Data from the pop-up menu. This opens an Export Data window where the following parameters were entered: Export: All features; Select "Use the same coordinate system as this layer's source data"; Output feature class: CapeCodBay_intersects_LTw.shp.

Process_Date: 20121011

Process_Step:

Process_Description:

Due to the lack of continuous long-term shoreline position data, some transects intersected shorelines from 1970-2009, but did not intersect shorelines prior to 1970, which resulted in long-term linear regression rates that were identical to the short-term. Transects and corresponding intersects used to compute long-term linear regression rates that did not intersect long-term shoreline data (1844-1970) were deleted in a standard editing session (ArcMAP v10).

Process_Date: 20121012

Process_Step:

Process_Description:

The exported transect shapefile was projected in Esri's ArcToolbox (v.10) > Data Management Tools > Projections and Transformations > Feature > Project. Parameters: input projection - NAD_1983_StatePlane_Massachusetts_Mainland_FIPS_2001; output projection - geographic coordinates (NAD83); transformation - none.

Process_Date: 20121116

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point

Point_and_Vector_Object_Count: 12644

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: State Plane Coordinate System 1983

State_Plane_Coordinate_System:

SPCS_Zone_Identifier: 2001

Lambert_Conformal_Conic:

Standard_Parallel: 41.716667

Standard_Parallel: 42.683333

Longitude_of_Central_Meridian: -71.500000

Latitude_of_Projection_Origin: 41.000000

False_Easting: 200000.000000

False_Northing: 750000.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.000001

Ordinate_Resolution: 0.000001

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: CapeCodBay_intersects_LTw

Entity_Type_Definition:

Measurement points used to calculate long-term shoreline change statistics

Entity_Type_Definition_Source: U.S. Geological Survey

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: OBJECTID

Attribute_Definition: Internal feature number used within geodatabase.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: TransectId

Attribute_Definition:

Used as a permanent and unique identification number (same as ObjectID field in Transect attribute table) for each transect calculated by DSAS. This attribute was used as the common field when joining the intersects table (.dbf) to the transect feature class in a geodatabase.

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: BaselineId

Attribute_Definition:

Unique identification number of the baseline segment. If BaselineID=0 no transects were generated. Used by DSAS to determine transect ordering alongshore if multiple baseline segments exist.

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: unlimited

Attribute:

Attribute_Label: ShorelineI

Attribute_Definition:

Date of shoreline position; date of survey as indicated on source material in the format mm/dd/yyyy. A default date of 07/01 was assigned to shorelines where only the year was known (month and day unknown). Using July, the mid-point month of the calendar year, minimizes the potential offset to the actual shoreline date by a maximum of six months.

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 07/01/1848

Range_Domain_Maximum: 03/17/2009

Attribute:

Attribute_Label: Distance

Attribute_Definition:

The along-transect distance from the baseline to the shoreline point measured in meters (State Plane Masachusetts Mainland FIPS 2001, NAD 83). Positive values are used when the reference baseline is landward (onshore) of the shorelines. Negative values are used when the reference baseline is seaward (offshore) of the shorelines. The positive/negative values provide appropriate directionality for calculating erosional or accretional trends in shoreline movement.

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -660.47525

Range_Domain_Maximum: 347.451989

Attribute:

Attribute_Label: IntersectX

Attribute_Definition:

Assigned by DSAS automatically to record the X coordinate of the shoreline measurement point in meter units (State Plane Masachusetts Mainland FIPS 2001, NAD 83).

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Unrepresentable_Domain: Values based on data set extent.

Attribute:

Attribute_Label: IntersectY

Attribute_Definition:

Assigned by DSAS automatically to record the Y coordinate of the shoreline measurement point in meter units (State Plane Masachusetts Mainland FIPS 2001, NAD 83).

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Unrepresentable_Domain: Values based on data set extent.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700

Contact_Facsimile_Telephone: 508-457-2310

Resource_Description: Downloadable data.

Distribution_Liability:

Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.

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

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: WinZip

Format_Version_Number: 16.5

Format_Specification: Esri polyline shapefile

Format_Information_Content:

This WinZip file contains a shapefile of measurement locations (intersects) generated by the Digital Shoreline Analysis System used to calculate long-term rates for the Cape Cod Bay region of Massachusetts. Metadata is also included.

File_Decompression_Technique: Use WinZip or pkUnzip

Transfer_Size: 529 KB

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<http://pubs.usgs.gov/of/2012/1183/data/CapeCodBay/CapeCodBay_intersects_LTw.zip>

Access_Instructions: Data may be downloaded via the World Wide Web (WWW).

Fees: None

Technical_Prerequisites:

This zip file contains data available in Environmental Systems Research Institute (Esri) point shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from Esri at www.esri.com.

Metadata_Reference_Information:

Metadata_Date: 20121116

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