OahuE_LT - Digital Shoreline Analysis System (DSAS) version 4.2 transects with long-term weighted linear regression rate calculations for the Oahu East region from Kahuku to Makapuu, Hawaii

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: University of Hawaii Coastal Geology Group

Publication_Date: 2011

Title:

OahuE_LT - Digital Shoreline Analysis System (DSAS) version 4.2 transects with long-term weighted linear regression rate calculations for the Oahu East region from Kahuku to Makapuu, Hawaii

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2011-1009

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/2011/1009/>

Larger_Work_Citation:

Citation_Information:

Originator: Bradley M. Romine

Originator: Charles H. Fletcher

Originator: Ayesha S. Genz

Originator: Matthew M. Barbee

Originator: Matthew Dyer

Originator: Tiffany R. Anderson

Originator: S. Chyn Lim

Originator: Sean Vitousek

Originator: Christopher Bochicchio

Originator: Bruce Richmond

Publication_Date: 2011

Title:

National Assessment of Shoreline Change: A GIS Compilation of Vector Shorelines and Associated Change Data for the Sandy Shorelines of Kauai, Oahu, and Maui; Hawaii

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2011-1009

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/2011/1009/>

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 long-term (1910-2006) shoreline change rates for the Oahu East region from Kahuku to Makapuu. Rate calculations were computed within a GIS using the Digital Shoreline Analysis System (DSAS) version 4.2, an ArcGIS extension developed by the U.S. Geological Survey. Long-term rates of shoreline change were calculated using a weighted linear regression rate based on all available shoreline data. A reference baseline was used as the originating point for the orthogonal transects imported into the DSAS software. The transects intersect each shoreline establishing measurement points, which are then used to calculate long-term rates.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2011

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -157.967780

East_Bounding_Coordinate: -157.658525

North_Bounding_Coordinate: 21.708268

South_Bounding_Coordinate: 21.309464

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: Weighted Linear Regression 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_Keyword: University of Hawaii Coastal Geology Group

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: United States

Place_Keyword: Hawaii

Place_Keyword: Oahu

Place_Keyword: East Oahu

Place_Keyword: Kahuku, Hawaii

Place_Keyword: Makapuu, Hawaii

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 University of Hawaii Coastal Geology Group as the originator of the dataset.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: University of Hawaii Coastal Geology Group

Contact_Person: Dr. Charles H. Fletcher

Contact_Position: professor

Contact_Address:

Address_Type: mailing and physical address

Address: University of Hawaii Coastal Geology Group

Address: 1680 East-West Road

Address: POST Room 721

City: Honolulu

State_or_Province: HI

Postal_Code: 96822

Country: USA

Contact_Voice_Telephone: 808-956-9513

Contact_Facsimile_Telephone: 808-956-5512

Contact_Electronic_Mail_Address: fletcher@soest.hawaii.edu

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770

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 4.2.

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: Charles H. Fletcher

Originator: Bradley M. Romine

Originator: Ayesha S. Genz

Originator: Matthew M. Barbee

Originator: Matthew Dyer

Originator: Tiffany R. Anderson

Originator: S. Chyn Lim

Originator: Sean Vitousek

Originator: Christopher Bochicchio

Originator: Bruce Richmond

Publication_Date: 2011

Title:

National Assessment of Shoreline Change: Historical Shoreline Change in the Hawaiian Islands

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2011-1051

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/2011/1051/>

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The attributes in this layer are based on the field requirements of the Digital Shoreline Analysis System (DSAS) software (USGS Open-File Report 2008-1278). Transects were constructed manually outside of DSAS and imported into DSAS for calculation of shoreline change rates by the software. The data have been quality checked for intended location and shoreline intersection.

Logical_Consistency_Report:

These data were constructed outside of DSAS and imported to DSAS v4.2, 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 imported to the DSAS software application that were used to calculate long-term shoreline change rates for the region.

Lineage:

Process_Step:

Process_Description:

Transect features were generated outside of DSAS and imported to DSAS v4.2 in ArcMap v9.3 for calculation of long-term shoreline change rates for the region. Transects are roughly perpendicular to the historical shorelines and spaced roughly 20 meters along the shore. Please see the DSAS help file distributed with the DSAS software, or visit the USGS website at: <http://pubs.usgs.gov/of/2008/1278/>. This process step and all subsequent process steps were performed by the same person: Bradley Romine

Process_Date: 20101020

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Bradley M. Romine

Contact_Organization: University of Hawaii Coastal Geology Group

Contact_Position: graduate student, research assistant

Contact_Address:

Address_Type: mailing and physical address

Address: University of Hawaii Coastal Geology Group

Address: 1680 East-West Road

Address: POST Room 721

City: Honolulu

State_or_Province: HI

Postal_Code: 96822

Country: USA

Contact_Voice_Telephone: 808-956-3605

Contact_Facsimile_Telephone: 808-956-5512

Contact_Electronic_Mail_Address: romine@hawaii.edu

Process_Step:

Process_Description:

Rate Calculations Performed in DSAS v4.2 using ArcMap v9.3. Parameters Used: shoreline layer=OahuE_shorelines, shoreline date field=DATE_, shoreline uncertainty field name=ACCURACY, the default accuracy=0 (accuracy values provided for all shorelines), shoreline intersection parameters=closest intersection, stats calculations=[weighted linear regression (WLR)], shoreline threshold=3, confidence interval=95%, Output rate table name=EOahu_transects_LT_rates_20101020_144515.

Process_Date: 20101020

Process_Step:

Process_Description:

Shoreline rates table (EOahu_transects_LT_rates_20101020_144515.dbf) was joined to the transect feature class in ArcCatalog v9.3 with ArcToolbox > Data Management Tools > Joins > Join Field. Parameters: input dataset: the transect feature class; input join field - TransOrder; output join field - OBJECTID; join table - EOahu_transects_LT_rates_20101020_144515; based on field in table: TransectID; join attributes: WLR, WCI95. This method permanently adds the selected attributes to the transect feature class.

Process_Date: 20101020

Process_Step:

Process_Description:

The joined transect feature class was exported to a shapefile in ArcMap v9.3 by right-clicking the transect layer > data > export data.

Process_Date: 20101020

Process_Step:

Process_Description:

The exported transect shapefile was projected in ESRI's ArcToolbox (v.9.3) > Data Management Tools > Projections and Transformations > Feature > Project. Parameters: input projection - UTM zone 4N (NAD 83); output projection - geographic coordinates (WGS84); transformation - NAD_1983_To_WGS_1984_3 (Hawaii).

Process_Date: 20110712

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: 2108

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: OahuE_LT

Entity_Type_Definition:

Transects are generated outside of DSAS at a 90 degree angle to the user-specified baseline and imported to DSAS.

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:

The object identification field establishes a unique ID for each row in the attribute table. This number is used by DSAS to relate all shoreline-change results tables with the transects.

Attribute_Definition_Source: U.S. Geological Survey

Attribute:

Attribute_Label: BaselineID

Attribute_Definition: Unique identification number of the baseline segment.

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: unlimited

Attribute:

Attribute_Label: Group

Attribute_Definition:

Values in this field are based on input by user for grouping transects (=0, if no grouping).

Attribute_Definition_Source: U.S. Geological Survey

Attribute:

Attribute_Label: TransOrder

Attribute_Definition:

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: StartX

Attribute_Definition:

X coordinate of the beginning of the transect in meter units (UTM zone 4N, NAD 83).

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Unrepresentable_Domain: Values based on data set extent.

Attribute:

Attribute_Label: StartY

Attribute_Definition:

Y coordinate of the beginning of the transect in meter units (UTM zone 4N, NAD 83).

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Unrepresentable_Domain: Values based on data set extent.

Attribute:

Attribute_Label: EndX

Attribute_Definition:

X coordinate of the end of the transect in meter units (UTM zone 4N, NAD 83).

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Unrepresentable_Domain: Values based on data set extent.

Attribute:

Attribute_Label: EndY

Attribute_Definition:

Y coordinate of the end of the transect in meter units (UTM zone 4N, NAD 83).

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Unrepresentable_Domain: Values based on data set extent.

Attribute:

Attribute_Label: Azimuth

Attribute_Definition:

Azimuth of the transect measure in degrees clockwise from North.

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Unrepresentable_Domain: Values based on data set extent.

Attribute:

Attribute_Label: SHAPE_Leng

Attribute_Definition: Length of feature in meter units (UTM zone 4N, NAD 83).

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 249.99996

Range_Domain_Maximum: 250.000005

Attribute:

Attribute_Label: WLR

Attribute_Definition:

Long-term weighted least squares (WLR) shoreline change rate in meters per year. A negative value indicates beach erosion (shoreline recession) and a positive value indicates beach accretion (shoreline progradation). In a weighted linear regression, more reliable data are given greater emphasis or weight towards determining a best-fit line. The uncertainty field ("accuracy") of the shoreline feature class is used to calculate the weight. The weight is equal to the inverse of the shoreline uncertainty squared. Therefore, when fitting a trend line, greater emphasis is placed on data points for which the positional uncertainty is smaller. Rates were calculated only at transects with 3 or more historical shoreline intersects (shoreline threshold=3). Transects with less than 3 shoreline intersects were given a 'null' value of -9999.

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Unrepresentable_Domain:

Transects with less than 3 shoreline intersects were given a WLR 'null' value of -9999.

Attribute:

Attribute_Label: WCI95

Attribute_Definition:

95% confidence interval of WLR shoreline change rate in meters per year. The standard error of the slope with confidence interval describes the uncertainty of the reported rate. The confidence interval is calculated by multiplying the standard error of the slope of the WLR (meters/year) by the two-tailed test statistic at the specified confidence percentage (95). For example, if the reported WLR is 1.34 m/year and the 95 percent confidence interval (WCI95) is 0.5 then you can be 95 percent confident that the true rate of change is 1.34 m +- 0.7 meters/year. Rates and uncertainties were calculated only at transects with 3 or more historical shoreline intersects (shoreline threshold=3). Transects with less than 3 shoreline intersects were given a 'null' value of -9999.

Attribute_Definition_Source: U.S. Geological Survey

Attribute_Domain_Values:

Unrepresentable_Domain:

Transects with less than 3 shoreline intersects were given a WCI95 'null' value of -9999.

Overview_Description:

Entity_and_Attribute_Overview:

All calculations for length are in meter units and were based on the UTM zone 4N 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 long-term rate calculations for the OahuE region from Kahuku to Makapuu.

File_Decompression_Technique: Use WinZip or pkUnzip

Transfer_Size: 165 KB

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://pubs.usgs.gov/of/2011/1009/data/Oahu/OahuN/OahuN_LT.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: 20111104

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Bradley M. Romine

Contact_Organization: University of Hawaii Coastal Geology

Contact_Position: graduate student, research assistant

Contact_Address:

Address_Type: mailing and physical address

Address: University of Hawaii Coastal Geology Group

Address: 1680 East-West Road

Address: POST Room 721

City: Honolulu

State_or_Province: HI

Postal_Code: 96822

Country: USA

Contact_Voice_Telephone: 808-956-3605

Contact_Facsimile_Telephone: 808-956-5512

Contact_Electronic_Mail_Address: romine@hawaii.edu

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

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile