Bathymetric change map of the nearshore around Ship, Horn, and Petit Bois islands, Mississippi: 2008-2009 to 2016

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Noreen A. Buster
Originator: Owen T. Brenner
Originator: James G. Flocks
Publication_Date: 20171121
Title:

Bathymetric change map of the nearshore around Ship, Horn, and Petit Bois islands, Mississippi: 2008-2009 to 2016

Geospatial_Data_Presentation_Form: raster digital data
Series_Information:

Series_Name: U.S. Geological Survey Data Release
Issue_Identification: doi:10.5066/F7028QFV

Publication_Information:

Publication_Place: St. Petersburg, FL
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/F7028QFV

Description:

Abstract:

To characterize coastal change, historical maps and complementary records were compiled including: topographic sheets (T-sheets), hydrographic sheets (H-sheets, smooth sheets), shorelines, and bathymetric soundings surrounding the Mississippi (MS) barrier islands over several time periods (1916-1920, 2008-2009 and 2016). One goal of this work was to create a time-series of bathymetric change maps around the islands. Data sets include 1916 through 1920 soundings collected by the United States Coast and Geodetic Survey as downloaded H-sheets and some digitized soundings from the National Oceanic and Atmospheric Administration (NOAA), 2008 to 2009 soundings collected by the United States Geological Survey St. Petersburg and Woods Hole Coastal and Marine Science Centers (USGS SPCMSC and WHCMSC, respectively), and 2016 soundings collected by the USGS SPCMSC in the nearshore environment of Ship, Horn, and Petit Bois Islands. This USGS data release includes three interpolated bathymetric change maps created by comparing the 1916 to 1920, 2008 to 2009, and 2016 bathymetry data; however, this metadata file pertains to the bathymetric change digital elevation model (DEM) observed between the 2008-2009 and 2016 bathymetry (2016minus2008to2009_MS_NAD83NAVD88g12B_50m.tif). This work was completed in cooperation with the United States Army Corps of Engineers (Mobile, Alabama) and the National Park Service as part of the Mississippi Coastal Improvements Program (MsCIP).

Purpose:

The purpose of this effort was to create bathymetric grids and bathymetric change maps around the MS barrier islands to broadly characterize subaqueous morphologic change both spatially and temporally.

Supplemental_Information:

Elevation XYZ data used to create the 2008 to 2009 DEM are included in this USGS data release; 2016 XYZ data can be downloaded from DeWitt and others, 2017. The 2008 to 2009 elevation (z) values were adjusted to account for sea-level rise, using the NOAA tide gauge at Pensacola, FL. For further information on XYZ processing, refer to the accompanying elevation point metadata and Dewitt and others (2017). Within ArcGIS 10.4.1, XYZ soundings for 2008-2009 and 2016 were used to create Triangular Irregular Network (TIN) surfaces, individual TIN surfaces were later utilized to create a time-series of 50-m bathymetric rasters. A common snap raster was used to create these DEMs to maximize accuracy of subsequent bathymetric change map calculation. Bathymetric change maps were created using the 'Raster Calculator' and subtracting the one DEM from another. All spatial files provided in this data release are referenced to the Universal Transverse Mercator (UTM) North American Datum (NAD83) horizontal datum and North American Vertical Datum of 1988 (NAVD88) GEOID12B.

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 2008

Single_Date/Time:

Calendar_Date: 2009

Single_Date/Time:

Calendar_Date: 2016

Currentness_Reference: ground condition

Status:

Progress: complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -89.001779
East_Bounding_Coordinate: -88.499847
North_Bounding_Coordinate: 30.266217
South_Bounding_Coordinate: 30.187818

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:a899062b-cd90-493d-ba3b-bae4d05580d4

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: elevation
Theme_Keyword: location
Theme_Keyword: geoscientificInformation
Theme_Keyword: imageryBaseMapsEarthCover

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: marine geology
Theme_Keyword: geophysics
Theme_Keyword: bathymetry
Theme_Keyword: digital elevation models
Theme_Keyword: ocean characteristics
Theme_Keyword: ocean processes

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: soundings
Theme_Keyword: hydrography
Theme_Keyword: geophysical
Theme_Keyword: seafloor mapping
Theme_Keyword: historical
Theme_Keyword: NOAA
Theme_Keyword: National Oceanic and Atmospheric Administration
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: coastal location

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Mississippi
Place_Keyword: Alabama
Place_Keyword: Ship Island
Place_Keyword: Horn Island
Place_Keyword: Petit Bois Island
Place_Keyword: Dauphin Island
Place_Keyword: Mississippi Sound

Stratum:

Stratum_Keyword_Thesaurus: Oregon Geospatial Enterprise Office (GEO) Stratum Keyword
Stratum_Keyword: sea surface
Stratum_Keyword: epipelagic

Temporal:

Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2008
Temporal_Keyword: 2009
Temporal_Keyword: 2016

Access_Constraints: None
Use_Constraints:

Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originator of these data in future products or derivative research.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Noreen A. Buster
Contact_Organization:

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

Contact_Address:

Address_Type: mailing and physical
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: nbuster@usgs.gov

Data_Set_Credit:

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

Native_Data_Set_Environment:

Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.4.1

Cross_Reference:

Citation_Information:

Originator: Nancy T. DeWitt
Originator: James G. Flocks
Originator: Elizabeth A. Pendleton
Originator: Mark E. Hansen
Originator: B.J. Reynolds
Originator: Kyle W. Kelso
Originator: Dana S. Wiese
Originator: Charles R. Worley
Publication_Date: 2012
Title:

Archive of single beam and swath bathymetry data collected nearshore of the Gulf Islands National Seashore, Mississippi, from West Ship Island, Mississippi, to Dauphin Island, Alabama: Methods and data report for USGS Cruises 08CCT01 and 08CCT02, July 2008, and 09CCT03 and 09CCT04, June 2009

Series_Information:

Series_Name: U.S. Geological Survey Data Series
Issue_Identification: DS 675

Publication_Information:

Publication_Place: St. Petersburg, FL
Publisher: St. Petersburg Coastal and Marine Science Center

Online_Linkage: https://pubs.usgs.gov/ds/675/

Cross_Reference:

Citation_Information:

Originator: Nancy T. DeWitt
Originator: Chelsea A. Stalk
Originator: Jake J. Fredericks
Originator: James G. Flocks
Originator: Kyle W. Kelso
Originator: Andrew S. Farmer
Originator: Thomas M. Tuten
Originator: Noreen A. Buster
Publication_Date: 2017
Title:

Coastal bathymetry data collected in 2016 nearshore from West Ship Island to Horn Island, Gulf Islands National Seashore, Mississippi

Series_Information:

Series_Name: U.S. Geological Survey Data Release
Issue_Identification: doi:10.5066/F7B8571Q

Publication_Information:

Publication_Place: St. Petersburg, FL
Publisher: St. Petersburg Coastal and Marine Science Center

Online_Linkage: https://doi.org/10.5066/F7B8571Q

Cross_Reference:

Citation_Information:

Originator: Kathryn M. Weber
Originator: Jeffrey H. List
Originator: Karen L.M. Morgan
Publication_Date: 2005
Title:

An Operational Mean High Water Datum for Determination of Shoreline Position from Topographic Lidar Data

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: OFR 2005-1027

Publication_Information:

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

Online_Linkage: https://pubs.usgs.gov/of/2005/1027/

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The accuracy of this bathymetric change DEM is entirely dependent upon the accuracy of the two DEM surfaces (2008-2009 and 2016) used to calculate the elevation change it represents. DEM surfaces were created using a common snap raster to ensure direct pixel value comparison in quantifying bathymetric change. The accuracy of the 2008-2009 DEM is directly linked to the accuracy of the XYZ point data on which it is based (Dewitt and others, 2012). As reported (Dewitt and others, 2017) GPS base station, spaced approximately 15 to 20 km of the survey area, collected continuous data for GPS post-processing corrections. All static base station sessions were run through On-Line Positioning User Service (OPUS) resulting corrections produced +/-3.3 cm or less accuracy in the vertical component. The accuracy of the 2016 DEM is directly linked to the accuracy of the XYZ point data on which it is based (Dewitt and others, 2017). As reported (Dewitt and others, 2017) GPS base stations (spaced at 15-km from any roving vessel), collected continuous data for GPS post-processing corrections. All static base station sessions were run through the On-Line Positioning User Service (OPUS) and resulting corrections produced +/-0.023 m accuracy in the vertical component. Additionally, vertical datums associated with XYZ data have been recalculated (using VDatum and a NOAA tide gauge at Pensacola, FL) to allow for time series comparisons and this process introduces uncertainties into the data. Uncertainties are also introduced in interpolating DEM surfaces within Esri ArcGIS. The DEMs have not been independently verified for accuracy. For full accuracy and error information please see Dewitt and others (2012 and 2017), and metadata associated with each bathymetric DEM within this data release.

Logical_Consistency_Report:

This dataset includes the post-processed bathymetric data (XYZ) presented as an interpolated DEM representing bathymetric change occurring between July 2008 until 2016. The source data for the DEM was collected during multiple bathymetry surveys from 2008 to 2009 and 2016 near Ship, Horn, and Petit Bois in Mississippi. All spatial files provided in this data release are referenced in NAD83 UTM 16N (meters) and NAVD88 GEOID12B.

Completeness_Report:

The source data is historical and therefore not complete in its coverage. The source data was used to create DEM surfaces that best represent the historical soundings and were used to calculate bathymetric change, all while using best practice methods to keep the data as accurate as possible. See above accuracy report information for additonal details.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The horizontal accuracy of this bathymetric change map is entirely linked to the accuracy of the DEMs used to create it (2008_2009_MS_NAD83NAVD88g12B_50m.tif and 2016_MS_NAD83NAVD88g12B_50m.tif). Dewitt and others (2012) report a horizontal accuracy value of +/- 10 to 13 cm for the orginal 2008-2009 bathymetric dataset used to create the 2008-2009 DEM. Dewitt and others (2017) report a horizontal accuracy value of +/- 0.013 m (maximum for latitude and longitude) for the original 2016 bathymetric dataset used to create the 2016 DEM. Additional sources of error include 1) vertical datum conversion using NOAA's Vdatum software and, 2) creation of a TIN and interpolation of the DEM raster, with 50-m cell size and using nearest neighbor interpolation, within ArcGIS (version 10.4.1).

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The vertical accuracy of this bathymetric change map is entirely linked to the accuracy of the 2008-2009 and 2016 DEMs (2008_2009_MS_NAD83NAVD88g12B_50m.zip and 2016_MS_NAD83NAVD88g12B_50m.zip). Dewitt and others (2012) report a vertical accuracy value of 3.3 cm for the original XYZ dataset used to create the 2008-2009 DEM. Dewitt and others (2017) report a vertical accuracy value of +/- 0.0992 m (0.023 m [OPUS] + 0.0762 m [Vdatum])for the 2016 XYZ bathymetric dataset used to create the 2016 DEM. Subsequent data processing steps, specifically converting vertical datum of the XYZ data and interpolating DEM surfaces within Esri ArcGIS, introduce additional sources of uncertainty that have not been fully assessed.

Lineage:

Process_Step:

Process_Description:

Using Esri ArcGIS 10.4.1, elevation pixel values from the 2008-2009 bathymetry DEM (2008_2009_MS_NAD83NAVD88g12B_50m.tif) were subtracted from co-located elevation pixel values of the 2016 bathymetry DEM pixel values (2016_MS_NAD83NAVD88g12B_50m.tif) using the 'Raster Calculator' tool. The resulting bathymetric change DEM was saved as a TIFF raster file (.tif) and associated TIFF worldfile (.tfw).

Process_Date: 201707
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Noreen A. Buster
Contact_Organization:

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

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing
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: nbuster@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: Raster
Raster_Object_Information:

Raster_Object_Type: Grid Cell
Row_Count: 159
Column_Count: 964

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: 0.999600
Longitude_of_Central_Meridian: -87.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:

Abscissa_Resolution: 50
Ordinate_Resolution: 50

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222101

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: North American Vertical Datum 1988 GEOID12B
Altitude_Resolution: 0.0001
Altitude_Distance_Units: meters
Altitude_Encoding_Method: Attribute values

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Noreen A. Buster
Contact_Organization:

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

Contact_Address:

Address_Type: mailing and physical
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: nbuster@usgs.gov

Resource_Description: 2016minus2008to2009_MS_NAD83NAVD88g12B_50m.tif
Distribution_Liability:

Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described or contained herein. Any use of trade, firm, or product 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: GeoTIFF
File_Decompression_Technique: ZIP
Transfer_Size: 1.026

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://coastal.er.usgs.gov/data-release/doi-F7028QFV/data/2016minus2008to2009_MS_NAD83NAVD88g12B_50m.zip

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20201013
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Noreen A. Buster
Contact_Organization:

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

Contact_Position: Geologist
Contact_Address:

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

Contact_Voice_Telephone: (727) 502-8114
Contact_Electronic_Mail_Address: nbuster@usgs.gov

Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Security_Information:

Metadata_Security_Classification_System: none
Metadata_Security_Classification: unclassified
Metadata_Security_Handling_Description: none

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