Hubbard, T.D., Koehler, R.D., and Combellick, R.A., 2011, High-resolution lidar data for Alaska infrastructure corridors: Raw Data File RDF 2011-3, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK USA.Online Links:
This is a Vector data set.
The map projection used is Alaska Albers Equal Area Conic.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.000001
Ordinates (y-coordinates) are specified to the nearest 0.000001
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.
| Formal codeset | |
|---|---|
| Codeset Name: | Alaska index to topographic and other map coverage |
| Codeset Source: | U.S. Geological Survey, 1997, Alaska index to topographic and other map coverage: U.S. Geological Survey, 1 sheet. |
| Formal codeset | |
|---|---|
| Codeset Name: | RDF 2011-3 Overview Report, File Naming Convention |
| Codeset Source: | Hubbard, T.D., Koehler, R.D., and Combellick, R.A., 2011, High-resolution lidar data for Alaska infrastructure corridors: Overview Report: Alaska Division of Geological & Geophysical Surveys Raw Data File 2011-3, 291 p. |
The first five characters of each value correspond to the name of the USGS 1:63360 quadrangle. In order to create a more manageable file size for the raster data, some quadrangles were split into multiple portions (tiles), and an "a", "b", "c" or "d" was added to the end of the file name. For additional information pertaining to file naming conventions, see the overview report.
Data collection was supported by funding from the Department of Natural Resources (DNR), Division of Geological & Geophysical Surveys (DGGS), the Alaska Gas Pipeline Project Office, the Office of the Federal Coordinator, and the Alaska Gasline Development Corporation (AGDC). Lidar data were collected and processed by Watershed Sciences, Inc. of Corvallis, OR. Survey data were collected by McClintock Land Associates of Eagle River, AK. Lidar data and derivative products were checked for quality, completeness, and accuracy by State of Oregon Department of Geology & Mineral Industries based in Portland, OR.
(907)451-5029 (voice)
dggsgis@alaska.gov
Provide an index illustrating the spatial location of raster image files.
Individual polygons within the vector shapefile, referred to as tiles, are used to designate raster data files. Tiles were created by Watershed Sciences, Inc. in consultation with DGGS and are referenced to 1:63360 USGS quadrangles with the exception of the Talkeetna Mts and Phillip Smith Mts quadrangles where Mts has been replaced with MTNS. Attribute values have been visually inspected to ensure accuracy.
Data was visually inspected to ensure horizontal positional accuracy.
Lidar data was checked for accuracy and completeness. Please refer to the lidar QC report and overview report for details about the raster index file.
Data was visually inspected in ArcGIS to ensure consistency.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- This dataset is 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. The 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 2011-3
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 requestor or anyone else exceed the fee paid for the electronic service or product.
Current publication is not available on paper. To purchase other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard.
| Data format: | SHP |
|---|---|
| Network links: |
<http://dx.doi.org/10.14509/22722> |
DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media over the counter, by mail, phone, fax, or email from the DGGS Fairbanks office. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for exact shipping amount.
(907)451-5020 (voice)