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Read and fully comprehend the metadata prior to data use.
Acknowledge the U.S. Geological Survey (USGS), the Originator, when using the data set as a source. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Share data products developed using the source data set with the Originator.
Data should not be used beyond the limits of the source scale. This information is not intended for navigational purposes.
The data set is NOT a survey document and should not be utilized as such. Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.
DGPS (WAAS) accuracy for position is less than 3 meters. (From Garmin GPSMAP 76C/76CS Specifications, M01-10108-00, Rev0304, <https://buy.garmin.com/shop/store/assets/pdfs/specs/gpsmap76c_76cs_spec.pdf>).
Barometric altimeter features 10 feet accuracy with proper calibration with a resolution of 1 foot. (From Garmin GPSMAP 76C/76CS Specifications, M01-10108-00, Rev0304, <https://buy.garmin.com/shop/store/assets/pdfs/specs/gpsmap76c_76cs_spec.pdf>).
In general, photographs were taken using the largest field of view. However, the photographer could also zoom the lens to collect more detailed photos of features of interest. Because of variable aircraft altitude and distance from the shoreline, along with variable shooting parameters, the photographs do not show a consistent image width.
A Garmin GPSmap 76CSX (WAAS enabled) handheld global positioning system (GPS) unit recorded the position of the aircraft every 2 seconds. All the imagery was georeferenced to the aircraft position at the time the photo was taken, annotated with position and time information, resampled (to 2000 x 1339 pixels), using software and hardware developed by Red Hen Systems (<http://www.redhensystems.com/>).
Names are in the form "DSC_iiii" where "iiii" is an image counter.
Names are in the form "A509AK_DSC_iiii.jpg" where "iiii" is an image counter.
This information is not intended for navigational purposes.
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Physical materials are under controlled on-site access.
Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.