Quantifying rates of soil deflation with Structure-from-Motion photogrammetry in west Greenland
Aeolian processes are important drivers of geomorphic change in cold regions. Because these processes often occur at slow timescales over large areas, it can be difficult to quantify rates using traditional field methods. In the Kangerlussuaq region of Greenland, strong katabatic winds have shaped d...
Published in: | Arctic, Antarctic, and Alpine Research |
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Taylor & Francis Group
2018
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Online Access: | https://doi.org/10.1080/15230430.2017.1415852 https://doaj.org/article/f14fb780fadc42a5b04d78017e2c73e9 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:f14fb780fadc42a5b04d78017e2c73e9 2023-05-15T14:14:17+02:00 Quantifying rates of soil deflation with Structure-from-Motion photogrammetry in west Greenland Ruth C. Heindel Jonathan W. Chipman James T. Dietrich Ross A. Virginia 2018-01-01 https://doi.org/10.1080/15230430.2017.1415852 https://doaj.org/article/f14fb780fadc42a5b04d78017e2c73e9 en eng Taylor & Francis Group 1523-0430 1938-4246 doi:10.1080/15230430.2017.1415852 https://doaj.org/article/f14fb780fadc42a5b04d78017e2c73e9 undefined Arctic, Antarctic, and Alpine Research, Vol 50, Iss 1 (2018) photogrammetry structure-from-motion soil erosion arctic aeolian processes envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.1080/15230430.2017.1415852 2023-01-22T17:08:47Z Aeolian processes are important drivers of geomorphic change in cold regions. Because these processes often occur at slow timescales over large areas, it can be difficult to quantify rates using traditional field methods. In the Kangerlussuaq region of Greenland, strong katabatic winds have shaped distinct erosional landforms, or deflation patches, that appear to expand across the landscape. The modern erosion rate along the active margins, or scarps, of these deflation patches is unknown. We use Structure-from-Motion (SfM) photogrammetry to quantify the geomorphic change of ten deflation patches between 2014 and 2016. During the two-year study period, significant positive and negative change occurred at all sites, suggesting that deflation patches are active landforms and that geomorphic change is highly heterogeneous and localized. We observed significant change primarily along the scarps, while little to no change occurred in the center of the patches. Along the scarps, the mean negative change ranged from −0.7 to −2.5 cm, and erosion dominated in eight out of the ten deflation patches. The modern erosion rate appears to be lower than the century-scale rate of 2.5 cm yr−1 estimated from prior work using lichenometry, potentially because of the episodic nature of scarp retreat. Longer-term monitoring using these methods will help quantify the geomorphic response of this landscape to a rapidly changing regional climate. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Arctic Greenland Kangerlussuaq Unknown Arctic Greenland Kangerlussuaq ENVELOPE(-55.633,-55.633,72.633,72.633) Arctic, Antarctic, and Alpine Research 50 1 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
photogrammetry structure-from-motion soil erosion arctic aeolian processes envir geo |
spellingShingle |
photogrammetry structure-from-motion soil erosion arctic aeolian processes envir geo Ruth C. Heindel Jonathan W. Chipman James T. Dietrich Ross A. Virginia Quantifying rates of soil deflation with Structure-from-Motion photogrammetry in west Greenland |
topic_facet |
photogrammetry structure-from-motion soil erosion arctic aeolian processes envir geo |
description |
Aeolian processes are important drivers of geomorphic change in cold regions. Because these processes often occur at slow timescales over large areas, it can be difficult to quantify rates using traditional field methods. In the Kangerlussuaq region of Greenland, strong katabatic winds have shaped distinct erosional landforms, or deflation patches, that appear to expand across the landscape. The modern erosion rate along the active margins, or scarps, of these deflation patches is unknown. We use Structure-from-Motion (SfM) photogrammetry to quantify the geomorphic change of ten deflation patches between 2014 and 2016. During the two-year study period, significant positive and negative change occurred at all sites, suggesting that deflation patches are active landforms and that geomorphic change is highly heterogeneous and localized. We observed significant change primarily along the scarps, while little to no change occurred in the center of the patches. Along the scarps, the mean negative change ranged from −0.7 to −2.5 cm, and erosion dominated in eight out of the ten deflation patches. The modern erosion rate appears to be lower than the century-scale rate of 2.5 cm yr−1 estimated from prior work using lichenometry, potentially because of the episodic nature of scarp retreat. Longer-term monitoring using these methods will help quantify the geomorphic response of this landscape to a rapidly changing regional climate. |
format |
Article in Journal/Newspaper |
author |
Ruth C. Heindel Jonathan W. Chipman James T. Dietrich Ross A. Virginia |
author_facet |
Ruth C. Heindel Jonathan W. Chipman James T. Dietrich Ross A. Virginia |
author_sort |
Ruth C. Heindel |
title |
Quantifying rates of soil deflation with Structure-from-Motion photogrammetry in west Greenland |
title_short |
Quantifying rates of soil deflation with Structure-from-Motion photogrammetry in west Greenland |
title_full |
Quantifying rates of soil deflation with Structure-from-Motion photogrammetry in west Greenland |
title_fullStr |
Quantifying rates of soil deflation with Structure-from-Motion photogrammetry in west Greenland |
title_full_unstemmed |
Quantifying rates of soil deflation with Structure-from-Motion photogrammetry in west Greenland |
title_sort |
quantifying rates of soil deflation with structure-from-motion photogrammetry in west greenland |
publisher |
Taylor & Francis Group |
publishDate |
2018 |
url |
https://doi.org/10.1080/15230430.2017.1415852 https://doaj.org/article/f14fb780fadc42a5b04d78017e2c73e9 |
long_lat |
ENVELOPE(-55.633,-55.633,72.633,72.633) |
geographic |
Arctic Greenland Kangerlussuaq |
geographic_facet |
Arctic Greenland Kangerlussuaq |
genre |
Antarctic and Alpine Research Arctic Arctic Greenland Kangerlussuaq |
genre_facet |
Antarctic and Alpine Research Arctic Arctic Greenland Kangerlussuaq |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 50, Iss 1 (2018) |
op_relation |
1523-0430 1938-4246 doi:10.1080/15230430.2017.1415852 https://doaj.org/article/f14fb780fadc42a5b04d78017e2c73e9 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1080/15230430.2017.1415852 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
50 |
container_issue |
1 |
_version_ |
1766286837718974464 |