Digital Shoreline Analysis System (DSAS) version 4.4 transects with short-term linear regression rate calculations for the exposed north coast of Alaska, from Icy Cape to Cape Prince of Wales

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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: Alexander G. Snyder
Originator: Ann E. Gibbs
Publication_Date: 20191227
Title:

Digital Shoreline Analysis System (DSAS) version 4.4 transects with short-term linear regression rate calculations for the exposed north coast of Alaska, from Icy Cape to Cape Prince of Wales

Geospatial_Data_Presentation_Form: polyline shapefile
Series_Information:

Series_Name: data release
Issue_Identification: DOI: 10.5066/P9H1S1PV

Publication_Information:

Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/P9H1S1PV
Online_Linkage:

https://www.sciencebase.gov/catalog/item/5dbb7affe4b06957974eda3b

Larger_Work_Citation:

Citation_Information:

Originator: Alexander G. Snyder
Originator: Ann E. Gibbs
Publication_Date: 2019
Title:

National Assessment of Shoreline Change: A GIS compilation of vector shorelines and associated shoreline change data for the north coast of Alaska, Icy Cape to Cape Prince of Wales

Series_Information:

Series_Name: data release
Issue_Identification: https://doi.org/10.5066/P9H1S1PV

Publication_Information:

Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/P9H1S1PV

Description:

Abstract:

This dataset consists of short-term (less than 37 years) shoreline change rates for the north coast of Alaska from Icy Cape to Cape Prince of Wales. Rate calculations were computed within a GIS using the Digital Shoreline Analysis System (DSAS) version 4.4, an ArcGIS extension developed by the U.S. Geological Survey. Rates of shoreline change were calculated using a linear regression rate-of-change (lrr) method based on available shoreline data between 1980s and 2016. 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 rates of change.

Purpose:

Beach erosion is a persistent problem along most open-ocean shores of the United States. Along the Arctic coast of Alaska, coastal erosion is widespread and is threatens Native communities, defense and energy-related infrastructure, and coastal habitat. As coastal populations continue to expand and infrastructure and habitat are increasingly threatened by erosion, there is increased demand for accurate information regarding past and present trends and rates of shoreline movement. There also is a need for a comprehensive analysis of shoreline change with metrics that are consistent from one coastal region to another. To meet these national needs, the U.S. Geological Survey is conducting an analysis of historical shoreline changes along the open-ocean sandy shores of the conterminous United States and parts of Hawaii, Alaska, and the Great Lakes. One purpose of this work is to develop standard, repeatable methods for mapping and analyzing shoreline change so that periodic, systematic, and internally consistent updates regarding coastal erosion and land loss can be made nationally.

Supplemental_Information:

Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the dataset in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19480701
Ending_Date: 20160903

Currentness_Reference: ground condition.

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -168.127648476711
East_Bounding_Coordinate: -162.826969308734
North_Bounding_Coordinate: 67.847383257894
South_Bounding_Coordinate: 65.6001728650679

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5dfb1beae4b0b5e61c053997

Theme:

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

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Distributions
Theme_Keyword: Physical/Chemical Features

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: coastal processes

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: shoreline accretion
Theme_Keyword: shoreline erosion

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC
Theme_Keyword: Shoreline
Theme_Keyword: Shoreline Change
Theme_Keyword: Digital Shoreline Analysis System
Theme_Keyword: DSAS

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: North Slope
Place_Keyword: Chukchi Sea
Place_Keyword: Kotzebue Sound
Place_Keyword: Bering Land Bridge National Preserve
Place_Keyword: Cape Krusenstern National Monument
Place_Keyword: Icy Cape
Place_Keyword: Point Lay
Place_Keyword: Cape Lisburne
Place_Keyword: Point Hope
Place_Keyword: Cape Thompson
Place_Keyword: Cape Espenberg
Place_Keyword: Cape Prince of Wales
Place_Keyword: Kivalina
Place_Keyword: Deering
Place_Keyword: Shishhmaref
Place_Keyword: Wales

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Arctic
Place_Keyword: Red Dog Dock

Access_Constraints: None
Use_Constraints:

USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Contact_Person: PCMSC Science Data Coordinator

Contact_Address:

Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov

Native_Data_Set_Environment:

Generated as a feature class contained in a Personal Geodatabase by DSAS in ArcGIS.

Cross_Reference:

Citation_Information:

Originator: Ann E. Gibbs
Originator: Alexander G. Snyder
Originator: Bruce M. Richmond
Publication_Date: 2019
Title:

National Assessment of Shoreline Change: Historical Shoreline Change Along the North Coast of Alaska, Icy Cape to Cape Prince of Wales.

Other_Citation_Details:

Gibbs, A.E., Snyder, A.G., Richmond, B.M., 2019, National Assessment of Shoreline Change: Historical Shoreline Change Along the North Coast of Alaska, Icy Cape to Cape Prince of Wales: U.S. Geological Survey Open-File Report 2019-1146.

Online_Linkage: https:/doi.org/10.3133/ofr20191146

Cross_Reference:

Citation_Information:

Originator: Robert E. Thieler
Originator: Emily A. Himmelstoss
Originator: Jessica L. Zichichi
Originator: Ayhan Ergul
Publication_Date: 2009
Title:

Digital Shoreline Analysis System (DSAS) version 4.0 - An ArcGIS extension for calculating shoreline change

Other_Citation_Details:

Thieler, E.R., Himmelstoss, E.A., Zichichi, J.L., and Ergul, A., 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.

Online_Linkage: https://doi.org/10.3133/ofr20081278

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The attributes 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:

All polylines have a unique identification attribute (ID). This field is used by the Digital Shoreline Analysis System (DSAS) to measure shoreline change.

Completeness_Report:

This dataset contains the transects automatically generated by the DSAS software application that were used to calculate shoreline change rates along the coast of Alaska, between Icy Cape and Cape Prince of Wales, where shoreline position data were available. Additional transects may have been generated but did not intersect the shoreline dates specified.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The transect serves as a reference point along which measurements are calculated by the Digital Shoreline Analysis System (DSAS) software. It does not correspond to any real-world feature.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The transect serves as a reference point along which measurements are calculated by the Digital Shoreline Analysis System (DSAS) software. It does not correspond to any real-world feature.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey
Publication_Date: 2019
Title:

Offshore baseline generated to calculate shoreline change rates for the north coast of Alaska, Icy Cape to Cape Prince Wales.

Geospatial_Data_Presentation_Form: shapefile
Publication_Information:

Publication_Place: online
Publisher: U.S. Geological Survey

Online_Linkage:

https://www.sciencebase.gov/catalog/file/get/5dbb7aa1e4b06957974eda35?facet=WestChukchi_Baselines

Type_of_Source_Media: Digital Resources
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: Unknown
Ending_Date: Unknown

Source_Currentness_Reference: Not Applicable

Source_Citation_Abbreviation: DSAS baseline
Source_Contribution: DSAS baseline used for calculation of shoreline change rates.

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey
Publication_Date: 2019
Title:

Shorelines from 1948 to 2016 for the north coast of Alaska, Icy Cape to Cape Prince Wales.

Geospatial_Data_Presentation_Form: shapefile
Publication_Information:

Publication_Place: online
Publisher: U.S. Geological Survey

Online_Linkage:

https://www.sciencebase.gov/catalog/file/get/5dbb7ac3e4b06957974eda38?facet=WestChukchi_shorelines

Type_of_Source_Media: Digital Resources
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1948
Ending_Date: 2016

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: shorelines
Source_Contribution: Shorelines used for calculation of shoreline change rates.

Process_Step:

Process_Description:

Transect features were generated using DSAS v4.4 in ArcMap v10.6. Parameters Used: baseline, transect spacing=50 meters, transect length=500m, cast direction=onshore, baseline location=offshore, cast method=smoothed, smoothing distance=50 meters. For additional details on these parameters, please see the DSAS help file distributed with the DSAS software.

Source_Used_Citation_Abbreviation: DSAS Baseline
Process_Date: 2019

Process_Step:

Process_Description:

Some transects were manually edited to ensure that intersected all shorelines and were as close to perpendicular as possible.

Source_Used_Citation_Abbreviation: shorelines
Process_Date: 2019

Process_Step:

Process_Description:

Rate calculations performed using DSAS v4.4 in ArcMap v10.6 on selected shoreline features. Parameters Used: shoreline layer=WestChukchi_shorelines, shoreline date field=DATE_, shoreline uncertainty field name=Uncy, the default accuracy= 0 meters, stats calculations=SCE/NSM/LRR, confidence interval=90%.

Source_Used_Citation_Abbreviation: shorelines
Process_Date: 2019

Process_Step:

Process_Description:

Shoreline change rates table was joined to the transect feature class in ArcMap v10.6 by right-clicking on the transect layer; joins and relates; join; join attributes from a table. Parameters: join field - ObjectID; field in table: TransectID; join options - keep only matching records.

Process_Date: 2019

Process_Step:

Process_Description:

The joined transect feature class was exported to a shapefile in ArcMap v10.6 by right-clicking the transect layer; data; export data, permanently linking the joined rate fields to the transect attribute table.

Process_Date: 2019

Process_Step:

Process_Description:

The exported transect shapefile was projected in Esri's ArcToolbox (v10.6); Data Management Tools; Projections and Transformations; Feature; Project. Parameters: input projection - UTM zone 3 (NAD83); output projection - geographic coordinates (WGS84); transformation = WGS_1984_(ITRF00)_To_NAD_1983.

Process_Date: 2019

Process_Step:

Process_Description:

Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed.

Process_Date: 20201019
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

Process_Step:

Process_Description:

Performed minor edits to the metadata to correct typos. No data were changed

Process_Date: 20211013
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Susan A. Cochran

Contact_Position: Geologist
Contact_Address:

Address_Type: Mailing and Physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060

Contact_Voice_Telephone: 831-460-7545
Contact_Electronic_Mail_Address: scochran@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: 8920

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0196106556
Longitude_Resolution: 0.0558147069
Geographic_Coordinate_Units: Decimal seconds

Geodetic_Model:

Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257223563

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Attribute Table
Entity_Type_Definition:

Table containing attribute information associated with the dataset.

Entity_Type_Definition_Source: Producer defined

Attribute:

Attribute_Label: FID
Attribute_Definition: Index number unique to each record in the attribute table.
Attribute_Definition_Source: Assigned by ArcMap
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 8919

Attribute:

Attribute_Label: Shape
Attribute_Definition:

Defines what type of spatial information is associated with this record (for example, polyline, polygon, point).

Attribute_Definition_Source: Assigned by ArcMap.
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Polyline
Enumerated_Domain_Value_Definition:

A shape defined by one or more paths, in which a path is a series of connected segments.

Enumerated_Domain_Value_Definition_Source: ArcMap 10.6

Attribute:

Attribute_Label: BaselineID
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: 107
Range_Domain_Maximum: 121

Attribute:

Attribute_Label: Group_
Attribute_Definition: Region ID as defined in Gibbs and others (2019).
Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 6
Enumerated_Domain_Value_Definition: Asikpak Lagoon to Sheshalik Spit (CAKR)
Enumerated_Domain_Value_Definition_Source: Producer defined.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 8
Enumerated_Domain_Value_Definition: Sullivan Lake to Cape Prince of Wales (BELA)
Enumerated_Domain_Value_Definition_Source: Producer defined.

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: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 9100
Range_Domain_Maximum: 24612

Attribute:

Attribute_Label: ProcTime
Attribute_Definition:

Date and time (YYYY/MM/DD HH:MM:SS) a transect was processed. This value is automatically assigned by the DSAS extension.

Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2018/12/19 16:46:36
Range_Domain_Maximum: 2018/12/19 16:50:12

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; 0=transect was not auto-generated).

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: Transect was not auto-generated by DSAS.
Enumerated_Domain_Value_Definition_Source: Producer defined.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Transect was auto-generated by DSAS.
Enumerated_Domain_Value_Definition_Source: Producer defined.

Attribute:

Attribute_Label: StartX
Attribute_Definition:

Easting component of the coordinate (in NAD83 UTM Zone 3) defining the start of the transect.

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 356104.98
Range_Domain_Maximum: 594767.23

Attribute:

Attribute_Label: StartY
Attribute_Definition:

Northing component of the coordinate (in NAD83 UTM Zone 3) defining the start of the transect.

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 7278897.71
Range_Domain_Maximum: 7525502.8

Attribute:

Attribute_Label: EndX
Attribute_Definition:

Easting component of the coordinate (in NAD83 UTM Zone 3) defining the end of the transect.

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 356604.89
Range_Domain_Maximum: 594621.54

Attribute:

Attribute_Label: EndY
Attribute_Definition:

Northing component of the coordinate (in NAD83 UTM Zone 3) defining the end of the transect.

Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 7278815.88
Range_Domain_Maximum: 7525858.8

Attribute:

Attribute_Label: Azimuth
Attribute_Definition: The azimuth of the transect, defined in degrees.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 7.34
Range_Domain_Maximum: 350.31

Attribute:

Attribute_Label: ShoreType
Attribute_Definition: User defined shoreline type.
Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Exposed Barrier Beach
Enumerated_Domain_Value_Definition: Sand or gravel deposit extending across a body of water.
Enumerated_Domain_Value_Definition_Source: Producer defined.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Exposed Barrier Island
Enumerated_Domain_Value_Definition:

Offshore deposits of sand or sediment that run parallel to the coastline.

Enumerated_Domain_Value_Definition_Source: Producer defined.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Exposed Barrier Spit
Enumerated_Domain_Value_Definition:

Sand or gravel deposit extending from the mainland into a body of water.

Enumerated_Domain_Value_Definition_Source: Producer defined.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Exposed Mainland
Enumerated_Domain_Value_Definition:

A large, continuous extent of land that does not include offshore islands or other detached territories.

Enumerated_Domain_Value_Definition_Source: Producer defined.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Exposed Mainland, rocky
Enumerated_Domain_Value_Definition:

A large, continuous extent of rocky land that does not include offshore islands or other detached territories.

Enumerated_Domain_Value_Definition_Source: Producer defined.

Attribute:

Attribute_Label: SHAPE_Leng
Attribute_Definition: Length of the polyline represented by this record.
Attribute_Definition_Source: Producer defined.
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 112.125216
Range_Domain_Maximum: 792.974111
Attribute_Units_of_Measure: Meters

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.