Quantifying small‐magnitude soil erosion: Geomorphic change detection at plot scale [PDF]
AbstractSoil erosion is a big concern in bare soils from burnt areas and agricultural lands that lack a vegetation cover. In those unprotected soils, intense rain episodes, typical in Mediterranean climate, cause severe soil erosion processes that have been well studied previously using a number of procedures, such as the geomorphic change detection ...
Matilde Balaguer‐Puig +3 more
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Mitigating systematic error in topographic models for geomorphic change detection: accuracy, precision and considerations beyond off‐nadir imagery [PDF]
Abstract Unmanned aerial vehicles (UAVs) and structure‐from‐motion photogrammetry enable detailed quantification of geomorphic change. However, rigorous precision‐based change detection can be compromised by survey accuracy problems producing systematic topographic error (e.g.
Mike R. James +3 more
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Volumetric change analysis of the Cauvery delta topography using radar remote sensing
Geomorphology refers to the study of the Earth’s physical land surface features. Digital Elevation Model (DEM) is a digital imagery where each pixel represents elevation value above or below mean sea level.
Sambandan Rajakumari +3 more
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Extreme weather events can trigger various hydrogeomorphic phenomena and processes including slope failures. These shallow instabilities are difficult to monitor and measure due to the spatial and temporal scales in which they occur.
Evelina Kotsi +7 more
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This study created digital terrain models (DTMs) from historical aerial images using Structure from Motion (SfM) for a variety of image dates, resolutions, and photo scales.
Peter Chirico +2 more
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A comparison of structure from motion photogrammetry and the traversing micro-erosion meter for measuring erosion on shore platforms [PDF]
For decades researchers have used the micro-erosion meter and its successor the traversing micro-erosion meter to measure micro-scale rates of vertical erosion (downwearing) on shore platforms.
N. D. Cullen, A. K. Verma, M. C. Bourke
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Gully erosion in valley bottoms is a frequent process with negative consequences in the dehesa environment. Soil loss, decrease of soil and descend in biomass are among the negative aftereffect of gully erosion processes.
Alberto Alfonso-Torreño +5 more
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Short Communication: A simple workflow for robust low-cost UAV-derived change detection without ground control points [PDF]
High-quality 3-D point clouds generated from repeat camera-equipped unmanned aerial vehicle (UAV) surveys are increasingly being used to investigate landscape changes and geomorphic processes.
K. L. Cook, M. Dietze
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Detecting and Mapping Gas Emission Craters on the Yamal and Gydan Peninsulas, Western Siberia
Rapid climate warming at northern high latitudes is driving geomorphic changes across the permafrost zone. In the Yamal and Gydan peninsulas in western Siberia, subterranean accumulation of methane beneath or within ice-rich permafrost can create mounds ...
Scott Zolkos +7 more
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3D POINT ERRORS AND CHANGE DETECTION ACCURACY OF UNMANNED AERIAL VEHICLE LASER SCANNING DATA [PDF]
Unmanned aerial vehicle laser scanning (ULS) has recently become available for operational mapping and monitoring (e.g. for forestry applications or erosion studies).
A. Mayr +4 more
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