orthoimagery: The orthoimagery is a single-band (for BW) or three-band (for CIR), 16-bit unsigned GeoTIFF file. The ground sample distance (GSD) varies per collection. The "No Data" value is set to 256.
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The Federal Emergency Management Agency (FEMA) provided funding through a Cooperative Agreement to the Alaska Division of Geological & Geophysical Surveys for the completion of this raw data file under grant number EMS-2019-CA-00022-R05. We thank FEMA Cooperating Technical Partners, the City of Homer, and the Homer Planning Commission for supporting this work. The source photos for historical aerial imagery were collected by the U.S. Air Force, BLM, and NASA. The image scans are provided by the USGS. We thank these organizations for these data collection and accessibility efforts. We also thank The Geographic Information Network of Alaska, GeoNorth, and the Alaska Geospatial Council for hosting and maintaining the best data layer, our control image. Finally, we thank the U.S. Army Corps of Engineers and NOAA Office for Coastal Management for the collection and distribution of very high resolution orthoimagery and topobathymetry in 2019 through the Joint Airborne Lidar Bathymetry Technical Center of Expertise. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government.
The orthometrically corrected imagery are for assessing coastal hazards and changes near Homer, Alaska.
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Are there legal restrictions on access or use of the data?Access_Constraints:
This report, map, and/or 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.
The State of Alaska makes no expressed 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.
| Data format: | Array in format orthoimage |
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| Network links: |
https://doi.org/10.14509/30824 |