Identification_Information: Citation: Citation_Information: Originator: James W. Sewall Company Originator: Save The Bay Originator: Narragansett Bay National Estuarine Research Reserve Originator: University of Rhode Island Environmental Data Center Publication_Date: 200911 Title: 2006 NBNERR - Save the Bay - URI 1:12,000 Digital True Color Orthophotography Geospatial_Data_Presentation_Form: remote-sensing image Publication_Information: Publication_Place: Kingston, RI Publisher: University of Rhode Island Environmental Data Center Other_Citation_Details: Suggested bibliographic reference: RIGIS, 2015. 2006 NBNERR - Save the Bay - URI 1:12,000 Digital True Color Orthophotography 1:12,000 Digital True Color Orthophotography. Rhode Island Geographic Information System (RIGIS) Data Distribution System, URL: http://www.rigis.org, Environmental Data Center, University of Rhode Island, Kingston, Rhode Island (last date accessed: 9 September 2015). Online_Linkage: http://www.rigis.org Larger_Work_Citation: Citation_Information: Originator: Rhode Island Geographic Information System (RIGIS) Publication_Date: 1993 Title: Rhode Island Geographic Information System (RIGIS) Data Distribution System Online_Linkage: http://www.rigis.org Description: Abstract: Narragansett Bay orthophotography, prints, and transparancies were taken during late summer of 2006. Orthophotography is 1:12000 scale and 0.5m resolution. Block Island is also included in the project area. Purpose: Orthophotography was collected for use by the Narragansett Bay National Estuarine Research Reserve, Save the Bay, and the University of Rhode Island Environmental Data Center to map and delineate shallow-subtidal estuarine habitats, specifically submerged aquatic vegetation. Supplemental_Information: See the following report for more information regarding these orthophotographs and the project that these are associated with: Bradley, M., K. Raposa, and S. Tuxbury. 2007. Report on the Analysis of True Color Aerial Photography to Map and Inventory Zostera marina L. in Narragansett Bay and Block Island, Rhode Island. Page 1-16 and 9 Mapsheets. Rhode Island Natural History Survey, Kingston, RI. Report available for download at http://www.ci.uri.edu/projects/mapcoast/resources.html. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: August 5, 2006 Time_of_Day: morning Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -71.625 East_Bounding_Coordinate: -71.095 North_Bounding_Coordinate: 41.845 South_Bounding_Coordinate: 41.125 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: aerial photography Theme_Keyword: digital orthophotography Theme_Keyword: aerials Place: Place_Keyword_Thesaurus: none Place_Keyword: Rhode Island Place_Keyword: New England Place_Keyword: Northeast Place_Keyword: New England Place_Keyword: United States Access_Constraints: None. Use_Constraints: This dataset is provided for reference only. These data were created for informational, planning and guidance use only. They are a general reference, not a legally authoritative source for the location of natural or manmade features. Proper interpretation of these data may requre the assistance of appropriate professional services. The cartographic representations depicted have not been verified by a RI Registered Professional Land Surveyor and are not intended to be used in place of a survey. The producer makes no warranty, express or implied, related to the accuracy, reliability, completeness, or currentness of these data. This dataset is provided 'as is.’ The producer(s) of this dataset, contributors to this dataset, the Rhode Island Geographic Information System (RIGIS) consortium, the State of Rhode Island, and the University of Rhode Island do not make any warranties of any kind for this dataset, and are not liable for any loss or damage however and whenever caused by any use of this dataset. Please acknowledge both RIGIS and the primary producer(s) of this dataset in any derived products. Versions of the RIGIS logo suitable for both printed and web-based products are available at http://www.edc.uri.edu/rigis/logos. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: University of Rhode Island - Environmental Data Center Contact_Person: Mike Bradley Contact_Position: Research Associate Contact_Address: Address_Type: mailing and physical address Address: University of Rhode Island Address: Department of Natural Resources Science Address: 105 Coastal Institute Kingston City: Kingston State_or_Province: RI Postal_Code: 02881-0804 Country: USA Contact_Voice_Telephone: 401-874-5054 Contact_Electronic_Mail_Address: mike@edc.uri.edu Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The data are accurate to +/- 50 ft. Logical_Consistency_Report: These data are believed to be consistent because James W. Sewall Co. performed the following QA/QC techniques: 1) Calibration and internal check of airborne GPS and IMU devices. 2) Feature alignment from photo to photo was checked to assure project specifications. 3) Co-registration check of orthoimagery against downloaded sample datasets such as DOQQs Orthoimages are also consistent with RIDOT 1:5000 Road Centerline data downloaded from RIGIS state repository of GIS data. Sample observations were within +/- 15 feet of features. Completeness_Report: Data are complete. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The data are accurate to +/- 50ft. Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Explanation: The elevation data utilized for this project was USGS 1:24,000 DEMs. The horizontal accuracy of this data is +/- 50ft. Data accuracies of the rectified images cannot be guaranteed to be better than this input data set. However, listed accuracy of the airborne GPS and IMU devices is +/- 1ft. And the rectified images correlated strongly with the 1:5K RIDOTcenterline road dataset although no formal tests were run. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: 10 feet. Quantitative_Vertical_Positional_Accuracy_Assessment: Vertical_Positional_Accuracy_Explanation: The vertical accuracy of USGS 1:24000 DEMs is 10feet. Lineage: Process_Step: Process_Description: Aerial photographs were taken using a Zeiss RMK TOP camera using color AGFA x100 film. They were taken in a series of 22 flight lines at an approximate average altitude of 10,000ft. To insure photographs were suitable for photo interpretation of shallow-subtidal habitats, NOAA Coastal Change Analysis Program (C-CAP) protocols were followed. Therefore, photographs were taken at a low sun angle, low wind, low tide, and high water clarity. To achieve the desired 1:12000 scale, photos were scanned at a resolution of 675 dpi to yield a photo resolution of 0.5m. Images were orthorectified using data from airborne GPS, IMU, and 1:24K USGS NED DEMs. Images were then mosaiced using OrthoVista which allowed for a degree of automation. The final product was clipped to USGS quadrangles and tiles were compressed to produce a Mr.Sid file format. Cloud_Cover: Cloud cover in Providence area is about 40% Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 15187 Column_Count: 11392 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: State Plane Coordinate System 1983 State_Plane_Coordinate_System: SPCS_Zone_Identifier: 3800 Transverse_Mercator: 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 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000000 Ordinate_Resolution: 0.000000 Planar_Distance_Units: survey feet Geodetic_Model: 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 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: University of Rhode Island Environmental Data Center Contact_Person: Erica Tefft Contact_Address: Address_Type: mailing and physical Address: 1 Greenhouse Road City: Kingston State_or_Province: RI Postal_Code: 02881 Contact_Voice_Telephone: 401-874-5054 Contact_Electronic_Mail_Address: erica@edc.uri.edu Contact_Instructions: email preferred Distribution_Liability: This dataset is provided 'as is.' The producer(s) of this dataset, contributors to this dataset, the Rhode Island Geographic Information System (RIGIS) consortium, the State of Rhode Island, and the University of Rhode Island do not make any warranties of any kind for this dataset, and are not liable for any loss or damage however and whenever caused by any use of this dataset. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Esri shapefile File_Decompression_Technique: ZIP Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://www.rigis.org Fees: No fee for downloading directly from the RIGIS Data Distribution System located at http://www.rigis.org. Metadata_Reference_Information: Metadata_Date: 20061206 Metadata_Review_Date: 20150909 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: University of Rhode Island - Environmental Data Center Contact_Person: Mike Bradley Contact_Position: Research Associate Contact_Address: Address_Type: mailing and physical address Address: University of Rhode Island Address: Department of Natural Resources Science Address: 105 Coastal Institute Kingston City: Kingston State_or_Province: RI Postal_Code: 02881-0804 Country: USA Contact_Voice_Telephone: 401-874-5054 Contact_Electronic_Mail_Address: mike@edc.uri.edu 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