Bathymetry and Elevation Points of Ninigret Pond
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: Mike Bradley
- Publication_Date: 20080506
- Title: Bathymetry and Elevation Points of Ninigret Pond
- Geospatial_Data_Presentation_Form: vector digital data
- Publication_Information:
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- Publisher: MapCoast
- Online_Linkage: www.mapcoast.org
- Description:
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- Abstract:
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Bathymetry and elevation points of Ninigret Pond and vicinity. The data set includes both subtidal, intertidal and terrestrial elevations
- Purpose:
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Soil survey and resource inventory of shallow water habitats of Rhode Island.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
- Currentness_Reference: ground condition
- Status:
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- Progress: Planned
- Maintenance_and_Update_Frequency: As needed
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -71.701235
- East_Bounding_Coordinate: -71.624541
- North_Bounding_Coordinate: 41.389793
- South_Bounding_Coordinate: 41.341958
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: Fathometer, depth soundings, LiDAR
- Theme_Keyword: bathymetry, elevation, echo sounder, RTK-GPS
- Theme:
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- Theme_Keyword: elevation
- Theme_Keyword: bathymetry
- Access_Constraints: NONE
- Use_Constraints: Not to be used for navigation or re-sold, re-used for profit.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Mike Bradley
- Contact_Organization: MapCoast
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: University of Rhode Island
- Address: 105 Coastal Institute Kingston
- City: Kingston
- State_or_Province: RI
- Postal_Code: 02881
- Country: USA
- Contact_Voice_Telephone: 401-874-5054
- Contact_Electronic_Mail_Address: mike@edc.uri.edu
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Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.5.1450
- Data_Quality_Information:
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- Completeness_Report:
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Points may be updated as newer elevation and bathymetry datasets become available
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report: +/- 1m
- Vertical_Positional_Accuracy:
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- Vertical_Positional_Accuracy_Report: +/- 0.5 ft although no formal tests were run.
- Lineage:
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- Source_Information:
- Process_Step:
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- Process_Description:
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RIDOT, NOAA Lidar, RTK elevations, and bathymetry collected by Emily Shumchenia and Kathyrn Ford were all merged into one ArcGIS file.
Details on Bathymetry Data:
Kathyrn Ford (KF) collected 54,514 soundings. Depth was measured by a Garmin 240 Blue (in feet) registered to NAVD88. Tide correction was done using Hypack 2.12A Gold software. Tide corrections were based on Hypack analysis of three tide gauges placed in Ninigret by NRCS for the survey. Transducer correction is based on the depth of transducer below the hull plus an assumed squat of the boat of one inch. XY locations were obtained with a Trimble DSM212L DGPS receiver with sub-meter accuracy.
Data were provided in RI State Plane feet NAD83 to P. August (PA) in an Excel spreadsheet. PA eliminated 8 soundings with aberrant depths and 395 sounding with aberrant XY locations. Excel coordinates were converted to an Arc shapefile with ArcView 3.3 and converted to a coverage with Arc 8.3. The attribute DEPTH2 is the depth in feet of KF's soundings after correcting for tidal influence. Futher field checks also eliminated a handfull of incorrect points. Shallow water depths were also measured with a RTK GPS. All data are included in the raw data file below.
- Source_Used_Citation_Abbreviation: D:\mikeB\mapcoast\nin_data\ningrid.xml
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- Direct_Spatial_Reference_Method: Point
- Point_and_Vector_Object_Information:
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- SDTS_Terms_Description:
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- SDTS_Point_and_Vector_Object_Type: Entity point
- Point_and_Vector_Object_Count: 86801
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Grid_Coordinate_System:
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- Grid_Coordinate_System_Name: State Plane Coordinate System 1983
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- SPCS_Zone_Identifier: 3800
- Transverse_Mercator:
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- Scale_Factor_at_Central_Meridian: 0.999994
- Longitude_of_Central_Meridian: -71.500000
- Latitude_of_Projection_Origin: 41.083333
- False_Easting: 328083.333333
- False_Northing: 0.000000
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- Planar_Coordinate_Encoding_Method: row and column
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- Abscissa_Resolution: 5.000000
- Ordinate_Resolution: 5.000000
- Planar_Distance_Units: survey feet
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- Horizontal_Datum_Name: North American Datum of 1983
- Ellipsoid_Name: Geodetic Reference System 80
- Semi-major_Axis: 6378137.000000
- Denominator_of_Flattening_Ratio: 298.257222
- Vertical_Coordinate_System_Definition:
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- Depth_System_Definition:
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- Depth_Datum_Name: Land survey datum (NAVD88)
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- Detailed_Description:
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- Entity_Type_Label: nin_bathy_pts
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- Attribute_Label: FID
- Attribute_Definition: Internal feature number.
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Sequential unique whole numbers that are automatically generated.
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- Attribute_Label: Id
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- Attribute_Label: DEPTH2
- Attribute_Definition: depth in ft relative to NAVD88
- Attribute:
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- Attribute_Label: x_coord
- Attribute:
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- Attribute_Label: y_coord
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- Attribute_Label: data
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- Contact_Organization: MapCoast.org
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Generated by mp version 2.8.6 on Fri May 23 11:38:41 2008