Integrating structure‐from‐motion photogrammetry into rock weathering field methodologies

Mol, Lisa ORCID: 0000-0001-5272-3671 and Clarke, Lucy E ORCID: 0000-0002-8174-3839 (2019) Integrating structure‐from‐motion photogrammetry into rock weathering field methodologies. Earth Surface Processes and Landforms, 44 (13). pp. 2671-2684. doi:10.1002/esp.4693

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Despite recent rapid advances in the field of Structure from Motion (SfM) photogrammetry, the use of high‐resolution data to investigate small scale processes is a relatively underdeveloped field. In particular, rock weathering is rarely investigated using this suite of techniques. This research uses a combination of traditional non‐destructive rock weathering measurement techniques (rock surface hardness) and SfM to map deterioration and loss of cohesion of the surface using 3‐dimensional data. The results are used to interpret weathering behaviour across two different lithologies present on the site, namely shale and limestone. This new approach is tested on seven sites in Longyearbyen, Svalbard, where active weathering of a rock surface was measured after 13 years of exposure to extreme temperature regimes and snow cover. The surface loss was quantified with SfM and combined with rock surface hardness measurement distributions extrapolated in GIS. The combined results are used here to quantify the difference in response of both lithologies to these extreme temperatures. This research demonstrates the potential for further integration of SfM in rock weathering research and other small‐scale geomorphological investigations, in particular in difficult field conditions where portability of field equipment is paramount.

Item Type: Article
Article Type: Article
Uncontrolled Keywords: Rock weathering; Structure from motion; Rock hardness; Surface roughness; Arctic
Subjects: G Geography. Anthropology. Recreation > G Geography (General)
G Geography. Anthropology. Recreation > GB Physical geography
G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Schools and Research Institutes > School of Education and Science
Research Priority Areas: Place, Environment and Community
Depositing User: Lucy Clarke
Date Deposited: 02 Jul 2019 12:25
Last Modified: 31 Aug 2023 08:58

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