Description
The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced a digital surface model (DSM) and an orthorectified aerial image (orthoimagery) over Yukon River Crossing in support of landslide hazard mapping. Aerial photographs and Global Navigation Satellite System (GNSS) data were collected on June 30, 2016, and were processed using Structure-from-Motion (SfM) photogrammetric techniques to create the DSM and orthoimagery. For the purpose of enabling open access to geospatial datasets in Alaska, this collection is being released as a Raw Data File with an open end-user license. All files can be downloaded free of charge from the DGGS website (http://doi.org/10.14509/30183). The orthoimagery is a four-band, 16-bit unsigned GeoTIFF file. The orthoimagery has a GSD of 0.24 m per pixel, and the "No Data" value is set to 256. Variable sky conditions during the photogrammetry survey resulted in some illumination anomalies in the southern part of the study area.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| orthoimage | Unknown | CSDGM IMPORT ERROR: No digtinfo/formcont | Open resource |
| Web Resource | Unknown | Open resource |
Tags
- aerial
- aerial photography
- big salt river
- coastal and river
- digital surface model (dsm)
- earthquake related slope failure
- engineering
- engineering geology
- environmental
- fracturing
- geologic
- geological process
- geologic hazards
- geology
- geomorphology
- geotechnical
- hazards
- landslide
- melozitna mining district
- methods
- orthoimagery
- pipeline
- rampart mining district
- raster image
- ray river
- rockfall
- sightas island
- slides
- slope
- slope instability
- smoothface mountain
- structure from motion
- surface
- surface water
- surficial
- surficial geology
- tolovana mining district
- topography
- trans-alaska pipeline
- vegetation
- water
- woodcamp creek
- yukon river