Baseline_OpenOcean.shp - Baseline Along the Open-Ocean (South-Facing) Coast of Dauphin Island, Alabama, Generated to Calculate Shoreline Change Rates.

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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: 20170616
Title:

Baseline_OpenOcean.shp - Baseline Along the Open-Ocean (South-Facing) Coast of Dauphin Island, Alabama, Generated to Calculate Shoreline Change Rates.

Edition: First.
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: U.S. Geological Survey Data Release
Issue_Identification: doi:10.5066/F7T43RB5

Publication_Information:

Publication_Place: St. Petersburg, Florida
Publisher:

U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center

Other_Citation_Details: None.
Online_Linkage: https://doi.org/10.5066/F7T43RB5

Description:

Abstract:

Analysis of shoreline change for Dauphin Island, Alabama was conducted using the U.S. Geological Survey (USGS) Digital Shoreline Analysis System (DSAS) v.4.3 for ArcMap (Thieler and others, 2009) and vector shorelines derived from air photos and lidar elevation surveys. DSAS-generated transects were cast at 100-meter intervals along a user defined shore-parallel baseline. The intersections of transects with the mean high water (MHW) shoreline positions are identified by intercept points. The rate of shoreline change was determined by measuring the differences in the distance to each historical shoreline position from the baseline along each transect.
Three analyses of change rates were conducted using a combination of shorelines derived from different data sources. Shoreline change rates from the wet dry line (WDL) shoreline were derived from 10 sets of air photos from 1940 - 2015. Rates of change were also calculated using MHW shorelines extracted from 14 lidar datasets from 1998 - 2014. A final change analysis was conducted using a combination of all WDL (aerial) and MHW (lidar) shorelines, from 1940 - 2015.

Purpose:

This dataset includes a reference baseline to be used with the DSAS to calculate shoreline change statistics for the back-barrier (north-facing) coast of Dauphin Island, Alabama. This baseline shapefile serves as the starting point for transects cast by the DSAS application. The transects are cast perpendicular to the baseline, and parallel to the general shoreline trend, and intersect each shoreline to establish measurement points, which are used to generate rates of shoreline change. Rates of shoreline change were generated in ArcGIS version 10.0 using the DSAS, version 4.3 (Theiler and other, 2009).

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20170616

Currentness_Reference: Publication date.

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None.

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -88.347879
East_Bounding_Coordinate: -88.070565
North_Bounding_Coordinate: 30.222423
South_Bounding_Coordinate: 30.236274

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:3ccdad31-2e42-4078-afe8-6aacfbdefd1e

Theme:

Theme_Keyword_Thesaurus: General
Theme_Keyword: oceans and coastal
Theme_Keyword: oceans and estuaries
Theme_Keyword: Baseline
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: St. Petersburg Coastal and Marine Science Center
Theme_Keyword: SPCMSC
Theme_Keyword: Open ocean

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: environment
Theme_Keyword: geoscientificInformation

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: coastal processes
Theme_Keyword: marine geology
Theme_Keyword: geomorphology
Theme_Keyword: marine geology
Theme_Keyword: geomorphology
Theme_Keyword: remote sensing
Theme_Keyword: unconsolidated deposits

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Alabama
Place_Keyword: Gulf Coast
Place_Keyword: Dauphin Island
Place_Keyword: United States
Place_Keyword: North America

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 in future products or derivative research.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, Florida

Contact_Person: Rachel E. Henderson

Contact_Address:

Address_Type: mailing address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: (727)-502-8000
Contact_Electronic_Mail_Address: rehenderson@usgs.gov

Data_Set_Credit:

Acknowledgment of the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, as a data source would be appreciated in products developed from these data, and such acknowledgment is standard for citation and legal practices. Sharing of new data layers developed directly from these data would also be appreciated by the U.S. Geological Survey staff.

Native_Data_Set_Environment:

Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.0.4.4000

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 4.3 - An ArcGIS extension for calculating shoreline change

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: https://pubs.er.usgs.gov/publication/ofr20081278
Online_Linkage: https://woodshole.er.usgs.gov/project-pages/DSAS/
Online_Linkage:

https://woodshole.er.usgs.gov/project-pages/DSAS/version4/index.html

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The attribute, "ID", in this layer is based on the requirements for use within the Digital Shoreline Analysis System (DSAS) software (USGS Open-File Report 2008-1278). The data have been quality checked.

Logical_Consistency_Report:

The single polyline has a unique identification attribute (ID) of 1. This field is used by the Digital Shoreline Analysis System (DSAS) to designate the alongshore order of baselines if there are more than one.

Completeness_Report:

This baseline file is complete and contains one baseline segment used to cast transects along the open ocean (south-facing) coast of Dauphin Island , Alabama where lidar shoreline position data were available and additional shoreline data are present to calculate either a short- or long-term rate of change.

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 feature class was created in a personal geodatabase and was used to construct a baseline offshore from the time series of shoreline positions, using standard editing tools in ArcMap v10.0. The baseline was positioned to conform to changes in the combined alongshore orientation of historical (MHW [lidar] and WDL [aerial]) shorelines. This was done so the transects, which are generated by the Digital Shoreline Analysis System v4.3 from the baseline, would intersect perpendicular to the general trend of the shorelines. The baseline feature was constructed along the open-ocean (south-facing) coast of the island, to capture change to this sandy shoreline.

Process_Date: 20160801
Source_Produced_Citation_Abbreviation: Baseline_OpenOcean.shp
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, Florida

Contact_Person: Rachel E. Henderson

Contact_Address:

Address_Type: mailing address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: (727)-502-8000
Contact_Electronic_Mail_Address: rehenderson@usgs.gov

Process_Step:

Process_Description:

The baseline feature class was exported from a personal geodatabase to a shapefile in ArcCatalog (v.10.0) by performing a right-mouse click on the data layer > export > to shapefile (single).

Process_Date: 20170301
Source_Produced_Citation_Abbreviation: Baseline_OpenOcean.shp
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, Florida

Contact_Person: Rachel E. Henderson

Contact_Address:

Address_Type: mailing address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: (727)-502-8000
Contact_Electronic_Mail_Address: rehenderson@usgs.gov

Process_Step:

Process_Description:

Added keywords section with USGS persistent identifier as theme keyword.

Process_Date: 20201013
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross

Contact_Position: Marine 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 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov

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: 2

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 16
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -87.0
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: Meter

Geodetic_Model:

Horizontal_Datum_Name: D_North_American_1983
Ellipsoid_Name: GRS_1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Baseline_OpenOcean.shp
Entity_Type_Definition:

Reference baseline used by the Digital Shoreline Analysis System (DSAS) to calculate rate-of-change statistics.

Entity_Type_Definition_Source: 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: Coordinates defining the features.

Attribute:

Attribute_Label: ID
Attribute_Definition:

Field required by the Digital Shoreline Analysis System (DSAS) software. DSAS uses this value to determine the ordering sequence of transects when the baseline feature contains multiple segments. Individual segments are numbered sequentially alongshore.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 1

Attribute:

Attribute_Label: SHAPE_Leng
Attribute_Definition: Length of feature in meters units (UTM zone 19N, WGS 84)
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 34161.85878
Range_Domain_Maximum: 34161.85878

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: Florida
Postal_Code: 33701
Country: US

Contact_Voice_Telephone: (727)-502-8000
Contact_Electronic_Mail_Address: rehenderson@usgs.gov

Resource_Description: Baseline_OpenOcean.shp
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 the baseline shapefile needed for generating shore-normal transects within the Digital Shoreline Analysis System for Dauphin Island, Alabama.

File_Decompression_Technique: Use WinZip or pkUnzip

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://coastal.er.usgs.gov/data-release/doi-F7T43RB5/data/Baseline_OpeanOcean.zip

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: 20210922
Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Rachel Henderson

Contact_Address:

Address_Type: mailing and physical
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: Florida
Postal_Code: 33701
Country: US

Contact_Voice_Telephone: (727)-502-8000
Contact_Electronic_Mail_Address: rehenderson@usgs.gov

Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time

This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/Baseline_OpenOcean_metadata.html>