Photogrammetric data of the Haines Highway corridor: May 26, 2014
Dates
Publication Date
2017
Time Period
2014
File Modification Date
2017-08-07 11:07:00
Citation
Wolken, G.J., Wikstrom Jones, Katreen, Whorton, E.N., Gould, A.I., and Hendricks, M.D., 2017, Photogrammetric data of the Haines Highway corridor: May 26, 2014: Alaska Division of Geological & Geophysical Surveys, http://doi.org/10.14509/29736.
Summary
The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced an orthorectified aerial optical image mosaic (orthoimage) and digital surface model over an area extending from milepost (MP) 17 to approximately MP 24.5 on the Alaska State Highway 7 (Haines Highway) north of Haines along the Chilkat River in southeast Alaska. The aerial photogrammetric survey targeted large debris fans and their alpine source areas on the west side of the Takshanuk Mountains in support of cryosphere hazards mapping and monitoring efforts. Aerial photographs and Global Navigation Satellite System (GNSS) data were collected on May 26, 2014, and were processed using Structure-from-Motion (SfM) photogrammetric techniques to create the orthoimagery. [...]
Summary
The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced an orthorectified aerial optical image mosaic (orthoimage) and digital surface model over an area extending from milepost (MP) 17 to approximately MP 24.5 on the Alaska State Highway 7 (Haines Highway) north of Haines along the Chilkat River in southeast Alaska. The aerial photogrammetric survey targeted large debris fans and their alpine source areas on the west side of the Takshanuk Mountains in support of cryosphere hazards mapping and monitoring efforts. Aerial photographs and Global Navigation Satellite System (GNSS) data were collected on May 26, 2014, and were processed using Structure-from-Motion (SfM) photogrammetric techniques to create the 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. The data files available for download are tiled GeoTIFFs. All data are projected in UTM Zone 8 North (meters) using the NAD83 (2011; EPSG 6337) horizontal datum and NAVD88 (Geoid12A; EPOCH 2010.00) vertical datum.
In 2014, the Alaska Division of Geological & Geophysical Surveys (DGGS) began a collaborative study with the Alaska Department of Transportation & Public Facilities (DOT&PF) along the Haines Highway corridor near Haines, Alaska. The intent of this study is to evaluate, monitor, and model geophysical processes, including cryosphere-related changes, along this important transportation corridor where destructive debris flows regularly impact the highway by threatening motorists, damaging infrastructure, and impeding traffic flow. Repeat aerial photography and digital surface model (DSM) generation of this dynamic catchment is the first step to allow DGGS to quantify debris volumes, understand the source of the debris flows, and provide guidance to DOT&PF planners for mitigating the hazard to the roadway.
