hydro-enforced digital surface model: The hydro-enforced digital surface model (DSM) represents surface elevations-for example, heights of vegetation, buildings, bridges, etc.-which have undergone a selective "flattening" process, where elevation values for any hydrologic features, as well as any hydrologic obstacles (bridges, culverts, etc.), are replaced with neighboring pixel values. The hydro-enforced DSM is a single-band, 32-bit float GeoTIFF file, with a ground sample distance of 0.093 meters. The No Data value is set to -3.40282306074e+038 orthoimagery: The orthoimagery is a four-band, 8-bit unsigned GeoTIFF file. The orthoimagery has a ground sample distance (GSD) of 0.046 m per pixel, and the "No Data" value is set to 256.
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These data products were funded, collected, and processed by DGGS. We thank the University of Alaska Fairbanks, Alaska Climate Adaptation Science Center for supplying the WingtraOne UAS, and Alpine Air for their aviation expertise and contribution to these data products.
This survey provides snow-free surface elevations and imagery data of a large landslide in northern Barry Arm, northwest Prince William Sound, Alaska for the purpose of assessing landslide movement with repeat surveys during snow-free surface conditions.
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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: | hydro-enforced digital surface model and orthoimagery in format GeoTIFF |
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https://doi.org/10.14509/30596 |