2008 Aerial Photography of Potomac River, Maryland
Metadata:
- Identification_Information:
- Citation:
- Citation_Information:
- Originator:
- Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division
- Publication_Date:
- 20100330
- Title:
- 2008 Aerial Photography of Potomac River, Maryland
- Geospatial_Data_Presentation_Form:
- remote-sensing image
- Publication_Information:
- Publication_Place:
- Silver Spring, MD
- Publisher:
- NOAA's Ocean Service, National Geodetic Survey (NGS)
- Online_Linkage:
- http://www.csc.noaa.gov/digitalcoast
- Description:
- Abstract:
- The images were acquired at a 1:30,000 scale. Images have been ortho-rectified and mosaiced to produce a seamless data set.
- Purpose:
- This imagery was orthorectified by Aero-metric to conform to the specifications set forth by NOAA for production of orthophotos in Contract Number DG133C06CO0055, Task Order Number T0007. Ortho-rectified mosaic tiles are not intended for mapping, charting or navigation.
- Supplemental_Information:
- Orthoimages are visually inspected for completeness to ensure that no gaps or image misplacements exist within and between adjacent images. These images are derived by mosaicking multiple images to ensure complete coverage. Source imagery is cloud free.
- Time_Period_of_Content:
- Time_Period_Information:
- Range_of_Dates/Times:
- Beginning_Date:
- 20080903
- Ending_Date:
- 20090224
- Currentness_Reference:
- ground condition
- Status:
- Progress:
- Complete
- Maintenance_and_Update_Frequency:
- None Planned
- Spatial_Domain:
- Bounding_Coordinates:
- West_Bounding_Coordinate:
- -77.520675
- East_Bounding_Coordinate:
- -76.135996
- North_Bounding_Coordinate:
- 39.013946
- South_Bounding_Coordinate:
- 37.761007
- Keywords:
- Theme:
- Theme_Keyword_Thesaurus:
- None
- Theme_Keyword:
- aerial
- Theme_Keyword:
- photography
- Theme_Keyword:
- shoreline
- Theme_Keyword:
- coastal
- Theme_Keyword:
- digital orthophotography
- Theme_Keyword:
- mosaic
- Theme:
- Theme_Keyword_Thesaurus:
- ISO 19115 Topic Category
- Theme_Keyword:
- imageryBaseMapsEarthCover
- Theme:
- Theme_Keyword_Thesaurus:
- NOS Data Explorer Topic Category
- Theme_Keyword:
- Remotely Sensed Imagery/Photography
- Place:
- Place_Keyword_Thesaurus:
- None
- Place_Keyword:
- Maryland
- Place_Keyword:
- Potomac River
- Access_Constraints:
- None
- Use_Constraints:
- We request that you credit the National Oceanic and Atmospheric Administration (NOAA) when you use these photos in a report, publication, or presentation.
- Point_of_Contact:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization:
- National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division
- Contact_Position:
- Chief, Remote Sensing Division
- Contact_Address:
- Address_Type:
- mailing and physical
- Address:
- 1315 East West Highway, N/NGS3
- Address:
- SSMC-3 8142
- City:
- Silver Spring
- State_or_Province:
- MD
- Postal_Code:
- 20910
- Country:
- USA
- Contact_Voice_Telephone:
- 301-713-2663
- Program_Affiliation:
- Program_Name:
- National Ocean Service Data Explorer
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- Data_Quality_Information:
- Logical_Consistency_Report:
- The ortho-rectified tiles are visually inspected for image quality and spot check for gross horizontal positional accuracy blunders with USGS Digital Orthophoto Quadrangles.
- Completeness_Report:
- The source imagery of the ortho-rectified mosaic tiles are acquired at a higher resolution images than the 1.0 meter ortho-rectified mosaic tiles product. The extent of image coverage is limited to the acquired flight lines which were planned to to map the shoreline and therefore may not include all areas within the bounding coordinates.
- Positional_Accuracy:
- Horizontal_Positional_Accuracy:
- Horizontal_Positional_Accuracy_Report:
- The horizontal accuracy of the orthorectified images is mainly determined by the quality of the DEM. The elevation data was from the USGS National Elevation Data dataset. Ground control points were measured in the ortho images and recorded in a spreadsheet which calculated the RMSE and NSSDA reporting accuracy.
- Quantitative_Horizontal_Positional_Accuracy_Assessment:
- Horizontal_Positional_Accuracy_Value:
- 0.95
- Horizontal_Positional_Accuracy_Explanation:
- These data are accurate to within 0.95 meters with a 95% circular error confidence level.
- Lineage:
- Process_Step:
- Process_Description:
- The digital images were aerotriangulated to support digital ortho image production for the Potomac River Shoreline project area. The project was referenced to the North American Datum of 1983 (NAD83), UTM Coordinate System, Zone 18 horizontally and to the North American Vertical Datum of 1988 (NAVD88) vertically. Units were in meters. The digital images, ABGPS data, and ground check point data were used as inputs to the Zeiss/Intergraph ImageStation Automatic Triangulation (ISAT) softcopy program. ISAT correlated image points and aerotriangulated the block of images to create exposure station exterior orientations. All ground points were manually measured on the imagery. These points were included in the aerotriangulation adjustments for absolute ground location verification. The scale of the aerial photos was 1:30,000. The photography was exposed on 20080903, 20080915, 20081031, 20090221, and 20090224. Rectification was done using the aerotriangulation data, raw DMC images, and 10 meter NED data. These rectified images were used to draw seamlines. The images were then dodged. The dodged rectified images were mosaicked, balanced, and cut into final image sheets. The final sheets were viewed and artifacts were removed as well as other edits performed.
- Process_Date:
- 20091101
- Cloud_Cover:
- Unknown
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- Spatial_Data_Organization_Information:
- Direct_Spatial_Reference_Method:
- Raster
- Raster_Object_Information:
- Raster_Object_Type:
- Pixel
- Row_Count:
- 5008
- Column_Count:
- 5008
- Vertical_Count:
- 1
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- Spatial_Reference_Information:
- Horizontal_Coordinate_System_Definition:
- Planar:
- Grid_Coordinate_System:
- Grid_Coordinate_System_Name:
- Universal Transverse Mercator
- Universal_Transverse_Mercator:
- UTM_Zone_Number:
- 18
- Transverse_Mercator:
- Scale_Factor_at_Central_Meridian:
- 0.999600
- Longitude_of_Central_Meridian:
- -75
- 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:
- 1.0
- Ordinate_Resolution:
- 1.0
- Planar_Distance_Units:
- meters
- Geodetic_Model:
- Horizontal_Datum_Name:
- NAD83
- Ellipsoid_Name:
- GRS80
- Semi-major_Axis:
- 6378137.000000
- Denominator_of_Flattening_Ratio:
- 298.2572221
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- Distribution_Information:
- Distributor:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization:
- National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), NOAA Coastal Services Center
- Contact_Position:
- Clearinghouse Manager
- Contact_Address:
- Address_Type:
- mailing and physical
- Address:
- 2234 South Hobson Avenue
- City:
- Charleston
- State_or_Province:
- SC
- Postal_Code:
- 29405-2413
- Country:
- USA
- Contact_Voice_Telephone:
- (843)740-1210
- Contact_Facsimile_Telephone:
- (843)740-1224
- Contact_Electronic_Mail_Address:
- clearinghouse@noaa.gov
- Hours_of_Service:
- Monday-Friday, 8-5 EST
- Resource_Description:
- Downloadable Data
- Distribution_Liability:
- These photographs were obtained for use by NGS during the course of its development of potential final products to fulfill its statutory mission. Although NGS is making these photographs available to others who may find the photographs of value, NGS does not warrant, endorse, or recommend the use of these photographs for any given purpose. NGS is providing these photographs "as is," and NGS disclaims any and all warranties, whether expressed or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. In no event will NGS be liable to you or any third party for any direct, indirect, incidental, consequential, special, or exemplary damages or lost profits resulting from any use or misuse of these data.
- Standard_Order_Process:
- Digital_Form:
- Digital_Transfer_Information:
- Format_Name:
- TIFF
- Digital_Transfer_Option:
- Online_Option:
- Computer_Contact_Information:
- Network_Address:
- Network_Resource_Name:
- http://www.csc.noaa.gov/digitalcoast
- Fees:
- None
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- Metadata_Reference_Information:
- Metadata_Date:
- 20100330
- Metadata_Contact:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization:
- National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division
- Contact_Position:
- Chief, Remote Sensing Division
- Contact_Address:
- Address_Type:
- mailing and physical
- Address:
- 1315 East West Highway, N/NGS3
- Address:
- SSMC-3 8142
- City:
- Silver Spring
- State_or_Province:
- MD
- Postal_Code:
- 20910
- Country:
- USA
- Contact_Voice_Telephone:
- 301-713-2663
- Metadata_Standard_Name:
- FGDC Content Standard for Digital Geospatial Metadata
- Metadata_Standard_Version:
- FGDC-STD-001-1998
- Metadata_Time_Convention:
- local time
- Metadata_Extensions:
- Online_Linkage:
- http://www.ncddc.noaa.gov/metadataresource/metadata-references/files/ncddcmdprofile_v2.pdf
- Profile_Name:
- Content Specification for Metadata in the National Coastal Data Development Center's Data Catalog Version 2.0
- Metadata_Extensions:
- Online_Linkage:
- http://www.esri.com/metadata/esriprof80.html
- Profile_Name:
- ESRI Metadata Profile
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