LongIsland_ST.shp - Digital Shoreline Analysis System version 4.1 Transects with Rate Calculations for the Long Island region from Montauk Point to the entrance of Raritan Bay, New York

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2010
Title:
LongIsland_ST.shp - Digital Shoreline Analysis System version 4.1 Transects with Rate Calculations for the Long Island region from Montauk Point to the entrance of Raritan Bay, New York
Geospatial_Data_Presentation_Form: vector digital data
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: <https://pubs.usgs.gov/of/2010/1119/>
Larger_Work_Citation:
Citation_Information:
Originator: Emily A. Himmelstoss
Originator: Meredith G. Kratzmann
Originator: Cheryl J. Hapke
Originator: E. Robert Thieler
Originator: Jeffrey List
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: <https://pubs.usgs.gov/of/2010/1119/>
Description:
Abstract:
Sandy ocean beaches are a popular recreational destination, often surrounded by communities containing valuable real estate. Development is on the rise despite the fact that coastal infrastructure is subjected to flooding and erosion. As a result, there is an increased demand for accurate information regarding past and present shoreline changes. To meet these national needs, the Coastal and Marine Geology Program of the U.S. Geological Survey (USGS) is compiling existing reliable historical shoreline data along open-ocean sandy shores of the conterminous United States and parts of Alaska and Hawaii under the National Assessment of Shoreline Change project.

There is no widely accepted standard for analyzing shoreline change. Existing shoreline data measurements and rate calculation methods vary from study to study and prevent combining results into state-wide or regional assessments. The impetus behind the National Assessment project was to develop a standardized method of measuring changes in shoreline position that is consistent from coast to coast. The goal was to facilitate the process of periodically and systematically updating the results in an internally consistent manner.

Purpose:
This dataset consists of short-term (~30 years) shoreline change rates for the Long Island region from Montauk Point to the entrance of Raritan Bay, New York. Rate calculations were computed within a GIS using the Digital Shoreline Analysis System (DSAS) version 4.1, an ArcGIS extension developed by the U.S. Geological Survey. Short-term rates of shoreline change were calculated using an end-point rate method based on shorelines from 1983 and 2000 to provide an approximately 30-yr short-term rate. A reference baseline was used as the originating point for the orthogonal transects cast by the DSAS software. The transects intersect each shoreline establishing measurement points, which are then used to calculate short-term rates.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2010
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.890114
East_Bounding_Coordinate: -71.852356
North_Bounding_Coordinate: 41.073678
South_Bounding_Coordinate: 40.558236
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: Shoreline
Theme_Keyword: Historic Shoreline
Theme_Keyword: Shoreline Change Rate
Theme_Keyword: Erosion
Theme_Keyword: Accretion
Theme_Keyword: Linear Regression Rate
Theme_Keyword: Endpoint Rate
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: National Assessment of Shoreline Change Project
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: environment
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: Atlantic Coast
Place_Keyword: United States
Place_Keyword: Mid Atlantic
Place_Keyword: New York
Place_Keyword: Long Island
Place_Keyword: Montauk
Place_Keyword: East Hampton
Place_Keyword: South Hampton
Place_Keyword: Fire Island
Place_Keyword: Jones Beach
Place_Keyword: Long Beach
Place_Keyword: Rockaway
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.
Point_of_Contact:
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
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850
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 4.1.
Online_Linkage:
<http://woodshole.er.usgs.gov/project-pages/dsas/version4/>
Online_Linkage: <http://woodshole.er.usgs.gov/project-pages/dsas/>
Online_Linkage: <https://pubs.usgs.gov/of/2008/1278/>
Cross_Reference:
Citation_Information:
Originator: Cheryl J. Hapke
Originator: Emily A. Himmelstoss
Originator: Meredith G. 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: <https://pubs.usgs.gov/of/2010/1118/>

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 transect layer or during the calculation of shoreline change rates performed by the software.
Logical_Consistency_Report:
These data were generated using DSAS v4.1, an automated software program which does not perform checks for fidelity of the input features. The transects were visually inspected and sometimes manually adjusted within a standard ArcMap edit session to adjust the position at which an individual transect intersected the shorelines.
Completeness_Report:
This dataset contains the transects automatically generated by the DSAS software application that were used to calculate short-term shoreline change rates for the region. Additional transects may have been generated but did not intersect the two shoreline dates specified (1983 and 2000 years) to calculate short-term rates.
Lineage:
Process_Step:
Process_Description:
Transect Features Generated using DSAS v4.1 in ArcMap v9.3. Parameters Used: baseline layer=LongIsland_baseline, baseline group field=NULL, transect spacing=50 meters, transect length=700 meters, cast direction=AUTO-DETECT, baseline location=offshore, cast method=two leg, smoothing distance=50 meters, flip baselines=not selected. For additional details on these parameters, please see the DSAS help file distributed with the DSAS software, or visit the USGS website at: <https://pubs.usgs.gov/of/2008/1278/>. This process step and all subsequent process steps were performed by the same person: Emily Himmelstoss.
Process_Date: 20090824
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:
Some transects did not intersect all shorelines at the default transect length. These transects were manually lengthened in an edit session using standard editing tools in ArcMap v9.3.
Process_Date: 20090824
Process_Step:
Process_Description:
Rate Calculations Performed in DSAS v4.1 using ArcMap v9.3 on Selected Shoreline Features Only (1983 and 2000). Parameters Used: shoreline layer=LongIsland_shorelines, shoreline date field=Date_, shoreline uncertainty field name=Uncy, the default accuracy=10.8 meters, shoreline intersection parameters=nearest, stats calculations=[End Point Rate (EPR)], shoreline threshold=none, confidence interval=90%, Output rate table name=LongIsland_transects_rates_20100423_113230.
Process_Date: 20100423
Process_Step:
Process_Description:
Shoreline rates table (LongIsland_transects_rates_20100423_113230.dbf) was joined to the transect feature class in ArcMap v9.3 by right-clicking on the transect layer > joins and relates > join > join attributes from a table. Parameters: join field - ObjectID; table to join - LongIsland_transects_rates_20100423_113230; field in table: TransectID; join options - keep only matching records.
Process_Date: 20100423
Process_Step:
Process_Description:
The joined transect feature class was exported to a shapefile, permanently linking the joined rate fields to the transect attribute table.
Process_Date: 20100423
Process_Step:
Process_Description:
The exported transect shapefile was projected in ESRI's ArcToolbox (v.9.3) from UTM zone 18N (NAD 83) to geographic coordinates (WGS84) using the NAD_1983_To_WGS_1984_1 datum transformation.
Process_Date: 20100427

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: 3210

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: LongIsland_ST
Entity_Type_Definition:
Transects are automatically generated by DSAS at a 90 degree angle to the user-specified baseline.
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 generated for each row of the transect attribute table when stored as a feature class in a geodatabase. This value is the common attribute field when joining to the TransectID value in short-term results output table calculated by DSAS.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: BaselineID
Attribute_Definition:
Unique identification number of the baseline segment. If BaselineID=0 no transects will be 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: TransOrder
Attribute_Definition:
Assigned by DSAS based on ordering of transects along the baseline. Used to allow user to sort transect data along the baseline from baseline start to baseline end.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: unlimited
Attribute:
Attribute_Label: ProcTime
Attribute_Definition:
Assigned by DSAS automatically to record the date and time a transect was processed.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: no value or 0 (when transect was manually created by user)
Range_Domain_Maximum:
unlimited (values based on time and date of automatic generation)
Attribute:
Attribute_Label: Autogen
Attribute_Definition:
Assigned by DSAS to indicate whether or not a transect was automatically created by DSAS (1= transect was auto generated by DSAS; blank or 0=transect was not auto-generated).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: blank or 0
Range_Domain_Maximum: 1
Attribute:
Attribute_Label: StartX
Attribute_Definition:
Assigned by DSAS automatically to record the X coordinate of the beginning of the transect in meter units (UTM zone 18N, NAD 83).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Values based on data set extent. When blank, transect was manually created by user.
Attribute:
Attribute_Label: StartY
Attribute_Definition:
Assigned by DSAS automatically to record the Y coordinate of the beginning of the transect in meter units (UTM zone 18N, NAD 83).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Values based on data set extent. When blank, transect was manually created by user.
Attribute:
Attribute_Label: EndX
Attribute_Definition:
Assigned by DSAS automatically to record the X coordinate of the end of the transect in meter units (UTM zone 18N, NAD 83).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Values based on data set extent. When blank, transect was manually created by user.
Attribute:
Attribute_Label: EndY
Attribute_Definition:
Assigned by DSAS automatically to record the Y coordinate of the end of the transect in meter units (UTM zone 18N, NAD 83).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain:
Values based on data set extent. When blank, transect was manually created by user.
Attribute:
Attribute_Label: Azimuth
Attribute_Definition:
Assigned by DSAS to record the azimuth of the transect measure in degrees clockwise from North. When zero, transect was manually created by user.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 360
Attribute:
Attribute_Label: SHAPE_Leng
Attribute_Definition: Length of feature in meter units (UTM zone 18N, NAD 83).
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 664.813945
Range_Domain_Maximum: 1356.365796
Attribute:
Attribute_Label: TRANSECTID
Attribute_Definition:
Same value as ObjectID. Used as a permanent and unique identification number for each transect in the output rates table calculated by DSAS. This attribute was used as the common field when joining the rates table (.dbf) to the transect feature class in a geodatabase.
Attribute_Definition_Source: U.S. Geological Survey
Attribute:
Attribute_Label: EPR
Attribute_Definition:
The end point rate is calculated by dividing the distance of shoreline movement by the time elapsed between the two shorelines. The rate is reported in meters/year.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -4.16
Range_Domain_Maximum: 19.6
Attribute:
Attribute_Label: ECI
Attribute_Definition:
Describes the uncertainty of the reported end point rate in meters.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.36
Range_Domain_Maximum: 0.692
Overview_Description:
Entity_and_Attribute_Overview:
All calculations for length are in meter units and were based on the UTM zone 18N NAD83 projection.

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: 9.0
Format_Specification: ESRI polyline shapefile
Format_Information_Content:
This WinZip file contains a shapefile of transects generated by the Digital Shoreline Analysis System including short-term rate calculations for the Long Island region from Montauk Point to the entrance of Raritan Bay, New York.
File_Decompression_Technique: Use WinZip or pkUnzip
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <https://pubs.usgs.gov/of/2010/1119/data/LongIsland_ST.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) polyline 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: 20100428
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Emily Himmelstoss
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
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2262
Contact_Electronic_Mail_Address: ehimmelstoss@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time

Generated by mp version 2.8.25 on Thu Jul 29 14:57:47 2010