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To assess coastal erosion dynamics during the entire 2018 and 2019 open water seasons at Drew Point, Beaufort Sea Coast, Alaska, we derived 16 coastlines position using satellite, airborne and unmanned aerial vehicle (UAV) sensors. Sensors with associated image dates are: Worldview 1 imagery ©Maxar (14 April 2019), Worldview 2 panchromatic imagery ©Maxar (5 April 2019, 26 September 2019, and 3 April 2020); Modular Aerial Camera System (MACS-Polar) during the Polar-6 airborne operations during the ThawTrend-Air campaign (13 July 2019, 23 July, 2019, and 30 July 2019) and DJI Phantom 4 UAV surveys (24 July 2018, 29 July 2018, 3 August 2018, 30 September 2018, 2 August 2019, 6 August 2019, 10 August 2019, 12 August 2019 and 15 August 2019). Pixel resolution for the satellite, airborne and UAV imagery was 50 cm (Worldview 1), 46 centimeter (cm) (Worldview 2), 10 cm and 4 cm, respectively. The satellite-image derived coastlines span the 9 kilometer (Km) segment described in Jones et al. (2018; DOI: 10.1088/1748-9326/aae471), while the other coastline spans a 1.5 Km sub-section of the study area that includes the coastline, part of inland coastal area (~125 meters (m)) and fallen toppled permafrost blocks in front of the bluff. Fallen toppled permafrost blocks were digitized using the airborne and UAV images. The satellite imagery was too coarse to digitize blocks. All datasets are in WGS84 UTM Zone 5N.
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Orthomosaic images and digital surface models at Drew Point, Beaufort Sea Coast, Alaska, 2018 and 2019
To assess coastal erosion dynamics during the 2018 and 2019 open water seasons at Drew Point, Beaufort Sea Coast, Alaska, we generated orthomosaic images and associated digital surface models from 9 unmanned aerial vehicle (UAV) surveys. UAV surveys were collected on 24 July 2018, 29 July 2018, 3 August 2018, 30 September 2018, 2 August 2019, 6 August 2019, 10 August 2019, 12 August 2019 and 15 August 2019. The digital surface models elevations are at relative sea level (2.2 meters (m) higher than local ellipsoid heights) and have been cleaned up (i.e. noise from waves removed) to only include the coast edge, ~125 m inland from the coast and toppled permafrost blocks in front of the bluff edge.
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- Award ID(s):
- 1927553
- PAR ID:
- 10639741
- Publisher / Repository:
- NSF Arctic Data Center
- Date Published:
- Subject(s) / Keyword(s):
- Permafrost Coastal Erosion Drew Point Alaskan Beaufort Sea
- Format(s):
- Medium: X Other: text/xml
- Sponsoring Org:
- National Science Foundation
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