Tidal_Grid

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: P. Soupy Dalyander

Originator: Joseph W. Long

Originator: Nathaniel G. Plant

Originator: David Thompson

Publication_Date: 2012

Title: Tidal_Grid

Edition: 1.0

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: Open-File Report (OFR)

Issue_Identification: 2012-1234

Publication_Information:

Publication_Place:

St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage: <http://pubs.usgs.gov/of/2012/1234/datafiles.html>

Larger_Work_Citation:

Citation_Information:

Originator: Nathaniel G. Plant

Originator: Joseph W. Long

Originator: P.Soupy Dalyander

Originator: David Thompson

Publication_Date: 2012

Title:

Hydrodynamic and Sediment Transport Model Application for OSAT3 Guidance

Edition: 1.0

Series_Information:

Series_Name: Open-File Report (OFR)

Issue_Identification: 2012-1234

Publication_Information:

Publication_Place:

St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage: <http://pubs.usgs.gov/of/2012/1234/title_page.html>

Description:

Abstract:

The U.S. Geological Survey has developed a method for estimating the mobility and potential alongshore transport of heavier-than-water sand and oil agglomerates (tarballs or surface residual balls, SRBs). During the Deepwater Horizon spill, some oil that reached the surf zone of the northern Gulf of Mexico mixed with suspended sediment and sank to form sub-tidal mats. If not removed, these mats can break apart to form SRBs and subsequently re-oil the beach. A method was developed for estimating SRB mobilization and alongshore movement. A representative suite of wave conditions was identified from buoy data for April, 2010, until August, 2012, and used to drive a numerical model of the spatially-variant alongshore currents. Potential mobilization of SRBs was estimated by comparing combined wave- and current-induced shear stress from the model to critical stress values for several sized SRBs. Potential alongshore flux of SRBs was also estimated to identify regions more or less likely to have SRBs deposited under each scenario. This methodology was developed to explain SRB movement and redistribution in the alongshore, interpret observed re-oiling events, and thus inform re-oiling mitigation efforts.

Purpose:

This GIS layer contains the model grid used for calculation of waves and currents in the tidal scenarios used to investigate hydrodynamic variability in the northern Gulf of Mexico. This data layer is intended to illustrate the complete model grid over which calculations were performed. The analysis results, which are contained in other data layers, are only presented at those locations where model output exist (e.g., "wet" grid cells, as opposed to "dry" grid cells in the model representing land).

Supplemental_Information:

This data layer is a subset of USGS Open-File Report 2012-1234, Hydrodynamic and Sediment Transport Model Application for OSAT3 Guidance. It presents the model grid over which hydrodynamic scenario calculations were conducted.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20100401

Ending_Date: 20120801

Currentness_Reference: ground condition

Status:

Progress: Planned

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -88.719372

East_Bounding_Coordinate: -85.412233

North_Bounding_Coordinate: 30.692770

South_Bounding_Coordinate: 29.405594

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: Woods Hole Coastal and Marine Science Center

Theme_Keyword: WHCMSC

Theme_Keyword: Coastal and Marine Geology Program

Theme_Keyword: CMGP

Theme_Keyword: wave

Theme_Keyword: current

Theme_Keyword: Delft3D

Theme_Keyword: St. Petersburg Coastal and Marine Science Center

Theme_Keyword: SPCMSC

Theme_Keyword: tarballs

Theme_Keyword: surface residual balls

Theme_Keyword: SRBs

Theme_Keyword: sediment mobility

Theme_Keyword: surf zone

Theme_Keyword: alongshore currents

Theme_Keyword: wave-driven currents

Theme:

Theme_Keyword_Thesaurus: ISO 9115 Topic Category

Theme_Keyword: oceans

Theme_Keyword: oceans and estuaries

Theme_Keyword: oceans and coastal

Theme_Keyword: geoscientificInformation

Place:

Place_Keyword_Thesaurus: General

Place_Keyword: Gulf of Mexico

Place_Keyword: Florida

Place_Keyword: Alabama

Place_Keyword: United States

Place_Keyword: North America

Place_Keyword: Atlantic Ocean

Place_Keyword: Mobile Bay

Place_Keyword: Pensacola Bay

Place_Keyword: Choctawhatchee Bay

Place_Keyword: Santa Rosa

Place_Keyword: Fort Pickens

Place_Keyword: Gulf Shores

Place_Keyword: Panama City

Place_Keyword: Little Lagoon

Stratum:

Stratum_Keyword_Thesaurus: General

Stratum_Keyword: seafloor

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_Person_Primary:

Contact_Person: P. Soupy Dalyander

Contact_Organization: U.S. Geological Survey

Contact_Position: Oceanographer

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 x2290

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: sdalyander@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name: model_bathymetry.jpg

Browse_Graphic_File_Description:

Graphic showing the numerical model domain over which analysis is conducted.

Browse_Graphic_File_Type: JPEG

Native_Data_Set_Environment:

Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

This data layer contains the grid over which hydrodynamic tidal results were calculated. Within the Delft3D model, these coordinates are in UTM, which have been converted into latitude and longitude for this data layer.

Logical_Consistency_Report:

No duplicate features are present. All polygons are closed, and all lines intersect where intended. No undershoots or overshoots are present.

Completeness_Report:

This layer contains the complete model grid (including wet and dry, e.g., land, grid cells) used for calculation of tidal hydrodynamic results.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

This layer contains the model grid over which hydrodynamic tidal results were calculated. The native grid used in the Delft3D model is in UTM coordinates, which have been converted to latitude and longitude, therefore there may be slight differences in values as a result of loss of significant figures.

Lineage:

Process_Step:

Process_Description:

The Deltares Delft3D numerical model suite (version 4.00.01) was used to create this model grid. Within the Delft3D model, grid cell locations are used in UTM coordinates. The coordinates were exported in latitude and longitude format from the Delft3D model into Mathworks .mat format.

Source_Used_Citation_Abbreviation: NOAA WW3

Process_Date: 2012

Source_Produced_Citation_Abbreviation: DELFT3D

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Joseph W. Long

Contact_Organization: U.S. Geological Survey

Contact_Position: Oceanographer

Contact_Address:

Address_Type: mailing and physical address

Address: 600 4th Street S

City: St. Petersburg

State_or_Province: FL

Postal_Code: 33701

Country: USA

Contact_Voice_Telephone: (727) 803-8747 x3024

Contact_Facsimile_Telephone: (727) 803-2032

Contact_Electronic_Mail_Address: jwlong@usgs.gov

Process_Step:

Process_Description:

Export the latitude and longitude for each grid cell from MATLAB format into an ArcGIS polygon shapefile using the Mathworks MATLAB Mapping Toolbox (v2012A). The shapefile is written with the "shapewrite" command. Because MATLAB does not assign a projection, the projection corresponding to the projection associated with the bathymetry used in the numerical models is added in ArcCatalog 9.3. The file was then quality checked in ArcMap to insure values were properly exported to the shapefile from MATLAB.

Source_Used_Citation_Abbreviation: DELFT3D

Process_Date: 2012

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: P. Soupy Dalyander

Contact_Organization: U.S. Geological Survey

Contact_Position: Oceanographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02540

Country: USA

Contact_Voice_Telephone: (508) 548-8700 x2290

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: sdalyander@usgs.gov

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: D:\OSAT3\ArcGIS\ModelGrids\Scenarios_Grid.shp.xml

Process_Date: 20121212

Process_Time: 08485600

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference: Gulf of Mexico

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon

Point_and_Vector_Object_Count: 1224047

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:

Altitude_Datum_Name: North American Vertical Datum of 1988

Altitude_Resolution: 0.01 m

Altitude_Distance_Units: meters

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Tidal_Grid

Entity_Type_Definition:

Model grid used in hydrodynamic calculations of tidal scenarios.

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: ModelGrid

Attribute_Definition:

Model grid domain (in this case, the model grid used for tidal calculations.)

Attribute_Definition_Source: USGS

Attribute_Domain_Values:

Unrepresentable_Domain: Keyword indicating which model grid this layer contains.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: P. Soupy Dalyander

Contact_Organization: U.S. Geological Survey

Contact_Position: Oceanographer

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 x2290

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: sdalyander@usgs.gov

Resource_Description:

Tidal_Grid: Layer containing the model grid used in the calculation of hydrodynamic results for the tidal scenarios.

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: SHP

Format_Version_Number: 3.3

Format_Specification: ESRI shapefile

Format_Information_Content:

WinZip archive file containing the shapefile components. The WinZip file also includes FGDC compliant metadata.

File_Decompression_Technique: WinZip 12.0 archive

Transfer_Size: 25-35 MB

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://pubs.usgs.gov/of/2012/1234/datafiles.html>

Fees: None

Technical_Prerequisites:

These data are available in Environmental Systems Research Institute (ESRI) 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: 20121212

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: P. Soupy Dalyander

Contact_Position: Oceanographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Role

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: (508) 548-8700 x2290

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: sdalyander@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Extensions:

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

Profile_Name: ESRI Metadata Profile