Effects of Proposed Sediment Borrow Pits on Nearshore Wave Climate and Longshore Sediment Transport Rate Along Breton Island, Louisiana: G3_Hh_Dd_wave_height
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: P. Soupy Dalyander
- Originator: Rangley C. Mickey
- Originator: Joseph W. Long
- Originator: James G. Flocks
- Publication_Date: 20150415
- Title:
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Effects of Proposed Sediment Borrow Pits on Nearshore Wave Climate and Longshore Sediment Transport Rate Along Breton Island, Louisiana: G3_Hh_Dd_wave_height
- Edition: 1.0
- Geospatial_Data_Presentation_Form: Vector Digital Data Set (Polygon)
- Publication_Information:
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- Publication_Place:
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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/2015/1055/ofr2015-1055_datafiles.html>
- Larger_Work_Citation:
-
- Citation_Information:
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- Originator: P. Soupy Dalyander
- Originator: Rangley C. Mickey
- Originator: Joseph W. Long
- Originator: James G. Flocks
- Publication_Date: 20150415
- Title:
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Effects of Proposed Sediment Borrow Pits on Nearshore Wave Climate and Longshore Sediment Transport Rate Along Breton Island, Louisiana
- Edition: 1.0
- Geospatial_Data_Presentation_Form: Multimedia presentation
- Series_Information:
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- Series_Name: Open-File Report (OFR)
- Issue_Identification: 2015-1055
- Publication_Information:
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- Publication_Place: St. Petersburg Coastal and Marine Science Center
- Publisher: U.S. Geological Survey
- Online_Linkage: <http://pubs.usgs.gov/of/2015/1055/index.html>
- Description:
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- Abstract:
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As part of a plan to preserve Breton Island, the southernmost extent of the Chandeleur Islands and part of the Breton Island National Wildlife Refuge, the National Fish and Wildlife Service (FWS) plans to nourish the island with sand supplied from offshore sand resources. The planned sand extraction sites are offshore of the island to the east and south in 5-10 m of water. Because borrow pits are perturbations to shallow-water bathymetry, they can impact the wave field in a variety of ways, and may result in alterations in sediment transport and new erosional or accretional patterns along the beach. For the present study, a scenario-based numerical modeling strategy was used to assess the impacts of the proposed borrow pits on the nearshore wave field. Impacts were assessed over a range of wave conditions, and were gauged by changes in significant wave height and wave direction inshore of the borrow sites.
- Purpose:
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This GIS layer contains an estimate of significant wave height in the shallow northern Gulf of Mexico for a single set of wave conditions. This output is based on a numerical model output of wave patterns for a given wave height scenario, corresponding to a particular set collected during 1995-2013 of offshore wave conditions at National Oceanic and Atmospheric Administration (NOAA) National Data Buoy Center (NDBC) buoy 42040. The specific wave conditions for a given layer are indicated by the file name (of format Hh_Dd_wave_height), in the shapefile attributes, and may be found by comparing the scenario name (Hh_Dd) to the look-up table (wave_scenarios.txt) included in the GIS zip file located at <http://pubs.usgs.gov/of/2015/1055/ofr2015-1055_datafiles.html> (G3_H1_D1_wave_height.zip). This data layer is intended to illustrate the spatial variability in wave height for this particular offshore wave climate scenario.
- Supplemental_Information:
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This data layer is a subset of USGS Open-File Report 2015-1055, Effects of Proposed Sediment Borrow Pits on Nearshore Wave Climate and Longshore Sediment Transport Rate Along Breton Island, Louisiana. It is part of a set of data layers showing the spatial variability in significant wave height for a range of offshore wave condition scenarios. Wave scenario dates correspond to active buoy (NDBC 42040) dates and range between December 4, 1995 to December 30, 2013.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 19951204
- Ending_Date: 20131230
- Currentness_Reference: ground condition
- Status:
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- Progress: complete
- Maintenance_and_Update_Frequency: As needed
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -89.2977017230
- East_Bounding_Coordinate: -88.9563929987
- North_Bounding_Coordinate: 29.5562673072
- South_Bounding_Coordinate: 29.3749979039
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: General
- Theme_Keyword: U.S. Geological Survey
- Theme_Keyword: USGS
- Theme_Keyword: St. Petersburg Coastal and Marine Science Center
- Theme_Keyword: SPCMSC
- Theme_Keyword: waves
- Theme_Keyword: borrow pits
- Theme:
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- Theme_Keyword_Thesaurus: ISO 9115 Topic Category
- Theme_Keyword: oceans
- Theme_Keyword: oceans and estuaries
- Theme_Keyword: oceans and coastal
- Theme_Keyword: geoscientificInformation
- Place:
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- Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Content
- Place_Keyword: Gulf of Mexico
- Place_Keyword: Louisiana
- Place_Keyword: North America
- Place_Keyword: United States
- Place_Keyword: Breton Island
- Access_Constraints: None.
- Use_Constraints:
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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:
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- Contact_Organization_Primary:
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- Contact_Organization: U.S. Geological Survey, USGS Southeast Area
- Contact_Person: P. Soupy Dalyander
- Contact_Position: Research Oceanographer
- Contact_Address:
-
- Address_Type: Mailing
- Address: 600 4th Street South
- City: St. Petersburg
- State_or_Province: FL
- Postal_Code: 33701
- Country: US
- Contact_Voice_Telephone: 727-502-8124
- Contact_Facsimile_Telephone: 727-502-8001
- Contact_Electronic_Mail_Address: sdalyander@usgs.gov
- Browse_Graphic:
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- Browse_Graphic_File_Name:
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<http://pubs.usgs.gov/of/2015/1055/datadirectory/G3_bathymetry.jpg>
- Browse_Graphic_File_Description:
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Graphic showing the numerical model domain over which analysis was conducted.
- Browse_Graphic_File_Type: JPEG
- Data_Set_Credit: U.S. Geological Survey
- Native_Data_Set_Environment:
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Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.2.1.3497
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report:
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The WaveHeight attribute in this data layer corresponds to significant wave height for Hh_Dd, characteristics of which may be found in the included wave_scenarios.txt file. Values will vary if a different numerical model is used to estimate the waves.
- Logical_Consistency_Report:
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No duplicate features are present. All polygons are closed, and all lines intersect where intended. No undershoots (lines falling short of the line they should intersect to form the polygon) or overshoots (lines crossing over the line they should intersect to form the polygon) are present.
- Completeness_Report:
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Significant wave height was calculated at all locations (wet grid cells) where model output exists. Because of differences between the scenarios, not all grid cells may be included in all scenarios. The significant wave height was calculated for a particular scenario (Hh_Dd), the characteristics of which may be found in the included wave_scenarios.txt file. The significant wave height was calculated from wave estimates generated with NOAA's Wavewatch III and Delft University of Technology's Simulating WAves Nearshore (SWAN) software and would vary if a different model were used or if different model inputs (such as bathymetry, forcing winds, and boundary conditions) or parameterizations were chosen.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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Numerical models are used in estimating the wave height values for this data layer. Because the overall horizontal accuracy of the dataset depends on the accuracy of the model, the underlying bathymetry, forcing values used, and so forth, the spatial accuracy of this data layer cannot be meaningfully quantified.
- Vertical_Positional_Accuracy:
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- Vertical_Positional_Accuracy_Report:
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Vertical datum is North American Vertical Datum of 1988 (NAVD88) with an estimated resolution of 0.01 m.
- Lineage:
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- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator: NOAA National Centers for Environmental Predictions (NCEP)
- Publication_Date: 201405
- Title: NOAA/NCEP Global Forecast System (GFS) Atmospheric Model
- Geospatial_Data_Presentation_Form: Digital and/or Hardcopy Resources
- Publication_Information:
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- Publication_Place: Camp Springs, MD
- Publisher: NOAA National Centers for Environmental Prediction
- Online_Linkage: <http://nomads.ncdc.noaa.gov/data.php>
- Type_of_Source_Media: Digital and/or Hardcopy Resources
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
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- Single_Date/Time:
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- Calendar_Date: 20050301
- Source_Currentness_Reference: publication date
- Source_Citation_Abbreviation: NOAA GFS
- Source_Contribution:
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Wind speed data at 10 m above the sea surface from the NOAA Global Forecast System (GFS) 0.5 degree model is interpolated by NOAA to the 4' Wavewatch III grid and archived. These archived data are used to drive the numerical wave and circulation model that creates estimates of bottom shear stress.
- Process_Step:
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- Process_Description:
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The Simulation WAves Nearshore (SWAN) model (v.41.01) was used to estimate the spectral wave field for the offshore wave conditions corresponding to this scenario Hh_Dd (characteristics of which may be found in the included wave_scenarios.txt file) in each grid cell in the model domain. SWAN is a 3rd generation phase-averaged numerical wave model, which conserves wave energy subject to generation, dissipation, and transformation processes and resolves spectral energy density over a range of user-specified frequencies and directions. Model bathymetry was provided by the NOAA National Geophysical Data Center Northern Gulf Coast digital elevation map, referenced to NAVD88. Significant wave height, dominant wave period, and mean wave direction were prescribed as SWAN TPAR format files every 5 grid cells along the model boundary using results from the NOAA Wavewatch III 4' multi-grid model for a representative moment in time corresponding to the offshore wave conditions of the scenario, and the specific time, which may be found in the included wave_scenarios.txt file. A JONSWAP (JOint NOrth Sea WAve Project) spectral shape was assumed at these boundary points. Wind forcing was provided using the archived Wavewatch III 4' winds, extracted from the NOAA GFS wind model, for this time. The SWAN directional space covers a full circle with a resolution of 6 degrees (60 bins). The frequency range was specified as 0.05 - 1 Hz with logarithmic spacing. Bottom friction calculations used the JONSWAP formulation with a uniform roughness coefficient of 0.067 m^2/s^3. 3rd-generation physics are activated, which accounts for wind wave generation and white capping (via the Komen et al parameterization). The model system outputs the significant wave height values included in this layer.
- Process_Date: 20140522
- Process_Step:
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- Process_Description:
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Exported the significant wave height values for each grid cell from MATLAB format into an ArcGIS polygon shapefile using the Mathworks MATLAB Mapping Toolbox (v2014A). The shapefile was written with the "shapewrite" command via MATLAB; but because MATLAB does not assign a projection during export, projections associated with the bathymetry used in the numerical models were later added in ArcCatalog 10.2. The file was then quality checked in ArcMap to ensure values were properly exported to the shapefile from MATLAB.
- Process_Date: 20140522
- Spatial_Data_Organization_Information:
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- Indirect_Spatial_Reference: Gulf of Mexico
- Direct_Spatial_Reference_Method: Vector
- Point_and_Vector_Object_Information:
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- SDTS_Terms_Description:
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- SDTS_Point_and_Vector_Object_Type: G-Polygon
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Geographic:
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- Latitude_Resolution: 0.0197890536
- Longitude_Resolution: 0.0226978275
- Geographic_Coordinate_Units: Decimal seconds
- Geodetic_Model:
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- Horizontal_Datum_Name: D_WGS_1984
- Ellipsoid_Name: WGS_1984
- Semi-major_Axis: 6378137.0
- Denominator_of_Flattening_Ratio: 298.257223563
- Vertical_Coordinate_System_Definition:
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- Altitude_System_Definition:
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- Altitude_Datum_Name: North American Vertical Datum of 1988
- Altitude_Resolution: 0.01 m
- Altitude_Distance_Units: meters
- Altitude_Encoding_Method:
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Explicit elevation coordinate included with horizontal coordinates.
- Entity_and_Attribute_Information:
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- Detailed_Description:
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- Entity_Type:
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- Entity_Type_Label: G3_Hh_Dd_wave_height
- Entity_Type_Definition: Significant wave height for specific wave scenarios.
- Entity_Type_Definition_Source: USGS
- Attribute:
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- Attribute_Label: FID
- Attribute_Definition: Internal feature number.
- Attribute_Definition_Source: Esri
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Sequential unique whole numbers that are automatically generated.
- Attribute:
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- Attribute_Label: Shape
- Attribute_Definition: Feature geometry.
- Attribute_Definition_Source: Esri
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Coordinates defining the features.
- Attribute:
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- Attribute_Label: Scenario_H
- Attribute_Definition:
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Scenario wave height number (e.g. "h" in Hh_Dd, see wave_scenarios.txt)
- Attribute_Definition_Source: USGS
- Attribute_Domain_Values:
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- Range_Domain:
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- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 8
- Attribute_Units_of_Measure: non-dimensional
- Attribute_Measurement_Resolution: 1
- Attribute:
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- Attribute_Label: Scenario_D
- Attribute_Definition:
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Scenario wave direction number (e.g. "d" in Hh_Dd, see wave_scenarios.txt)
- Attribute_Definition_Source: USGS
- Attribute_Domain_Values:
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- Range_Domain:
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- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 16
- Attribute_Units_of_Measure: non-dimensional
- Attribute_Measurement_Resolution: 1
- Attribute:
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- Attribute_Label: WaveHeight
- Attribute_Definition: significant wave height
- Attribute_Definition_Source: USGS
- Attribute_Domain_Values:
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- Range_Domain:
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- Range_Domain_Minimum: 0
- Range_Domain_Maximum: 100
- Attribute_Units_of_Measure: m
- Attribute_Measurement_Resolution: 0.01
- Overview_Description:
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- Entity_and_Attribute_Overview:
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The entity and attribute information provided here describes the tabular data associated with the dataset. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the dataset.
- Entity_and_Attribute_Detail_Citation:
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The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. Please review the rest of the metadata record for additional details and information.
- Distribution_Information:
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- Distributor:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: U.S. Geological Survey, USGS Southeast Area
- Contact_Person: P. Soupy Dalyander
- Contact_Position: Research Oceanographer
- Contact_Address:
-
- Address_Type: Mailing
- Address: 600 4th Street South
- City: St. Petersburg
- State_or_Province: FL
- Postal_Code: 33701
- Country: US
- Contact_Voice_Telephone: 727-502-8124
- Contact_Facsimile_Telephone: 727-502-8001
- Contact_Electronic_Mail_Address: sdalyander@usgs.gov
- 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:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: SHP
- Format_Version_Number: 10.2.1
- Format_Specification: Esri shapefile
- Format_Information_Content:
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WinZip archive file containing the shapefile components. The WinZip file also includes FGDC compliant metadata.
- File_Decompression_Technique: WinZip 12.0 archive
- Transfer_Size: 23.5 MB
- Digital_Transfer_Option:
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- Online_Option:
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- Computer_Contact_Information:
-
- Network_Address:
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- Network_Resource_Name: <http://pubs.usgs.gov/of/2015/1055/ofr2015-1055_datafiles.html>
- Fees: None. No fees are applicable for obtaining the dataset.
- Metadata_Reference_Information:
-
- Metadata_Date: 20140527
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: P. Soupy Dalyander
- Contact_Organization: U.S. Geological Survey, USGS Southeast Area
- Contact_Position: Research Oceanographer
- Contact_Address:
-
- Address_Type: Mailing
- Address: 600 4th Street South
- City: St. Petersburg
- State_or_Province: FL
- Postal_Code: 33701
- Country: US
- Contact_Voice_Telephone: 727-502-8124
- Contact_Facsimile_Telephone: 727-502-8001
- Contact_Electronic_Mail_Address: sdalyander@usgs.gov
- Metadata_Standard_Name: FGDC Content Standard 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:
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- Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
- Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.12 on Tue Oct 07 12:02:32 2014