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Remote Sensing of River Erosion on the Colville River, North Slope Alaska

Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
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Remote Sens. 2018, 10(3), 397; https://doi.org/10.3390/rs10030397
Received: 27 November 2017 / Revised: 24 February 2018 / Accepted: 2 March 2018 / Published: 5 March 2018
(This article belongs to the Special Issue Remote Sensing of Dynamic Permafrost Regions)
The Colville is an Arctic river in the Alaska North Slope. The residents of Nuiqsut rely heavily on the Colville for their subsistence needs. Increased erosion has been reported on the Colville, especially along bluffs, which shaped the goals of this study: to use remote sensing techniques to map and quantify erosion rates and the volume of land loss at selected bluff sites along the main channel of the Colville, and to assess the suitability of automated methods of regional erosion monitoring. We used orthomosaics from high resolution aerial photos acquired in 1955 and 1979/1982, as well as high resolution WorldView-2 images from 2015 to quantify long-term erosion rates and the cubic volume of erosion. We found that, at the selected sites, erosion rates averaged 1 to 3.5 m per year. The erosion rate remained the same at one site and increased from 1955 to 2015 at two of the four sites. We estimated the volume of land loss to be in the magnitude of 166,000 m3 to 2.5 million m3 at our largest site. We also found that estimates of erosion were comparable for manual hand-digitized and automated methods, suggesting our automated method was effective and can be extended to monitor erosion at other sites along river systems that are bordered by bluffs. View Full-Text
Keywords: remote sensing; erosion; classification; Arctic; Colville River; geomorphology remote sensing; erosion; classification; Arctic; Colville River; geomorphology
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MDPI and ACS Style

Payne, C.; Panda, S.; Prakash, A. Remote Sensing of River Erosion on the Colville River, North Slope Alaska. Remote Sens. 2018, 10, 397. https://doi.org/10.3390/rs10030397

AMA Style

Payne C, Panda S, Prakash A. Remote Sensing of River Erosion on the Colville River, North Slope Alaska. Remote Sensing. 2018; 10(3):397. https://doi.org/10.3390/rs10030397

Chicago/Turabian Style

Payne, Cole; Panda, Santosh; Prakash, Anupma. 2018. "Remote Sensing of River Erosion on the Colville River, North Slope Alaska" Remote Sens. 10, no. 3: 397. https://doi.org/10.3390/rs10030397

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