Description
The State of Alaska Division of Geological & Geophysical Surveys (DGGS) collected low-altitude aerial images from an unmanned aerial vehicle (UAV) on July 9-10, 2021 and used Structure-from-Motion (SfM) photogrammetry to produce a digital surface model (DSM) and orthoimage of Kotlik. The orthoimagery and elevation data are for assessing coastal hazards and changes. We used Trimble Business Center to process the Global Navigation Satellite System (GNSS) data used for positional control. We used Agisoft Metashape to process the photogrammetry data. These products are released as a Raw Data File with an open end-user license. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30789).
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| Web Resource | Unknown | Open resource | |
| Web Resource | Unknown | Open resource | |
| Web Resource | Unknown | Open resource | |
| Web Resource | Unknown | Open resource | |
| Web Resource | Unknown | Open resource | |
| GeoTIFF | Unknown | digital surface model and orthoimagery | Open resource |
| Web Resource | Unknown | Open resource |
Tags
- apoon pass
- coastal and river
- dggs
- digital elevation model
- digital surface model (dsm)
- emergency preparedness
- engineering
- engineering geology
- environmental
- erosion
- flood
- geologic
- geological process
- geologic hazards
- geology
- geomorphology
- geophysics
- geotechnical
- hazards
- hydrology
- kotlik
- kotlik river
- kulmogon slough
- little kotlik river
- methods
- raster image
- remote sensing
- surface
- surface water
- surficial
- surficial geology
- topography
- water
- web service