Photogrammetry-derived digital surface model and orthoimagery of land areas near Resurrection Bay, Alaska
Description
The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced a digital surface model (DSM) and an orthorectified aerial optical image mosaic (orthoimagery) of the Resurrection Bay watershed, surrounding the city of Seward in south-central Alaska. Aerial photographs and Global Navigation Satellite System (GNSS) data were collected on August 13, 2015, and were processed using Structure-from-Motion (SfM) photogrammetric techniques to create the DSM and orthoimagery. All data are projected in UTM Zone 6 North (meters) using the NAD83 (2011; EPSG 26906) horizontal datum and NAVD88 (Geoid12A; EPOCH 2010.00) vertical datum. The project was part of an ongoing investigation of the impact of flooding, slope instability, and cryosphere hazards on infrastructure and public safety. 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/10.14509/29824). DSMs represent surface elevations of all surfaces, including vegetation, vegetation-free land, bridges, buildings, etc. The DSM is a single-band, 32-bit float GeoTIFF files using Lempel-Ziv-Welch (LZW) compression, with a ground sample distance (GSD) of 0.41 m. The No Data value is set to -32767.
Resources
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http://doi.org/10.14509/29824 |
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CSDGM IMPORT ERROR: No digtinfo/formcont |
http://doi.org/10.14509/29824 |
Tags
- mount eva
- orthoimagery
- mount alice
- seward
- engineering
- methods
- fourth of july creek
- the lagoon
- little bear lake
- callisto peak
- woodrow
- clear creek
- aerial
- geomorphology
- mount benson
- spring creek
- sawmill creek
- geologic
- preachers pond
- environmental
- engineering geology
- race point
- geology
- slope
- likes creek
- surficial
- resurrection river
- prospect glacier
- vegetation
- tonsina point
- resurrection bay
- grouse lake
- bear mountain
- lowell point
- bear lake
- scheffler creek
- lakes
- bear creek
- salmon creek
- lowell creek
- lost lake trail
- box canyon creek
- godwin creek
- marathon mountain
- tiehacker mountain
- water
- bear lake glacier
- surficial geology
- geological process
- second lake
- caines head
- hazards
- derby cove
- japanese creek
- lost creek
- raster image
- surface
- thumb cove
- geologic hazards
- phoenix peak
- tonsina creek
- first lake
- spruce creek