norton-sound-photo-points Points showing the locations of 2180 oblique aerial photographs from eastern Norton Sound (these points are provided in both .xlsx and shapefile formats)
DeRaps, M.R., and Kinsman, N.E.M., 2011, Spatially referenced oblique aerial photography of the Eastern Norton Sound shoreline, July 2011: Raw Data File RDF 2011-5, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, Alaska USA.Online Links:
This is a Vector data set.
The map projection used is Albers Conical Equal Area.
Planar coordinates are encoded using row and column
Abscissae (x-coordinates) are specified to the nearest 0.002048
Ordinates (y-coordinates) are specified to the nearest 0.002048
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.
The flattening of the ellipsoid used is 1/298.257222.
| Range of values | |
|---|---|
| Minimum: | NS11_0910 |
| Maximum: | NS11_3099 |
| Range of values | |
|---|---|
| Minimum: | -362686.374935 |
| Maximum: | -332015.92444 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 1543901.64244 |
| Maximum: | 1638796.72345 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | NS11_0910.jpg |
| Maximum: | NS11_3099.jpg |
| Range of values | |
|---|---|
| Minimum: | 20110730092239 |
| Maximum: | 20110730113820 |
| Value | Definition |
|---|---|
| norton-sound-shoreline-obliques-01 | norton-sound-shoreline-obliques-01-910-1011.zip |
| norton-sound-shoreline-obliques-02 | norton-sound-shoreline-obliques-02-1012-1141.zip |
| norton-sound-shoreline-obliques-03 | norton-sound-shoreline-obliques-03-1142-1249.zip |
| norton-sound-shoreline-obliques-04 | norton-sound-shoreline-obliques-04-1250-1369.zip |
| norton-sound-shoreline-obliques-05 | norton-sound-shoreline-obliques-05-1370-1485.zip |
| norton-sound-shoreline-obliques-06 | norton-sound-shoreline-obliques-06-1486-1597.zip |
| norton-sound-shoreline-obliques-07 | norton-sound-shoreline-obliques-07-1598-1764.zip |
| norton-sound-shoreline-obliques-08 | norton-sound-shoreline-obliques-08-1765-1922.zip |
| norton-sound-shoreline-obliques-09 | norton-sound-shoreline-obliques-09-1923-1995.zip |
| norton-sound-shoreline-obliques-10 | norton-sound-shoreline-obliques-10-1996-2111.zip |
| norton-sound-shoreline-obliques-11 | norton-sound-shoreline-obliques-11-2112-2235.zip |
| norton-sound-shoreline-obliques-12 | norton-sound-shoreline-obliques-12-2236-2353.zip |
| norton-sound-shoreline-obliques-13 | norton-sound-shoreline-obliques-13-2354-2478.zip |
| norton-sound-shoreline-obliques-14 | norton-sound-shoreline-obliques-14-2479-2595.zip |
| norton-sound-shoreline-obliques-15 | norton-sound-shoreline-obliques-15-2596-2689.zip |
| norton-sound-shoreline-obliques-16 | norton-sound-shoreline-obliques-16-2690-2803.zip |
| norton-sound-shoreline-obliques-17 | norton-sound-shoreline-obliques-17-2804-2895.zip |
| norton-sound-shoreline-obliques-18 | norton-sound-shoreline-obliques-18-2896-2999.zip |
| norton-sound-shoreline-obliques-19 | norton-sound-shoreline-obliques-19-3000-3099.zip |
This RDF is funded with qualified outer continental shelf oil and gas revenues by the Coastal Impact Assistance Program, U.S. Fish and Wildlife Service, and U.S. Department of the Interior. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Government. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Government.
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The purpose of this publication is to provide a spatial reference for oblique aerial photographs taken along the Eastern Norton Sound shoreline in July 2011. The oblique aerial imagery is intended to serve as a photographic reference of coastal features and conditions at the time of collection.
The accuracies of the photo points are dependent upon the horizontal positional accuracy of the handheld GPS unit and camera and GPS clock synchronization. The clocks of both the camera and GPS were synchronized in order to link the camera's photographs with the spatial location provided by the GPS.
Accuracies of photo points are dependent on the handheld GPS units used to track the helicopter's position. According to the Garmin manual, typical horizontal accuracies for the Dakota 20 are less than 10 m.
Oblique aerial photographs are provided for the section of Norton Sound shoreline from approximately one mile North of Shaktoolik, AK to one mile South of Unalakleet, AK. There are two locations where the flight path and associated photographs deviate from the coast. The first location is within the community of Shaktoolik, caused by the re-fueling of the helicopter. The second location, just North of Unalakleet, was caused by reduced visibility that forced the pilot to circle until he gained special IFR clearance. The possible flight lines near Unalakleet were restricted due to reduced visibility, therefore photos are taken from lower altitudes and closer to the shoreline in this segment. The Unalakleet airport reported 2.5 to 5 mile visibility during the flight window for image collection.
The following logical consistency test was performed: photograph content were checked against the photo's geospatial location on LANDSAT imagery.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- The dataset(s) is (are) available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
- Use_Constraints:
- Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
907-451-5020 (voice)
907-451-5050 (FAX)
dggspubs@alaska.gov
RDF 2011-5
The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product.
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| Data format: | SHP |
|---|---|
| Network links: |
<http://dx.doi.org/10.14509/23143> |
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