Results 11 to 20 of about 8,313,860 (291)
Mitigating systematic error in topographic models for geomorphic change detection: accuracy, precision and considerations beyond off‐nadir imagery [PDF]
Earth Surface Processes and Landforms, 2020 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
core +9 more sources
Geomorphic Change Detection Using Multi-Beam Sonar [PDF]
, 2014 The emergence of multi-beam echo sounders (MBES) as an applicable surveying technology in shallow water environments has expanded the extent of geomorphic change detection studies to include river environments that historically have not been possible to survey or only small portions have been surveyed.
Hensleigh, James
openaire +3 more sources
AIRBORNE LASER SCANNING CHANGE DETECTION FOR QUANTIFYING GEOMORPHOLOGICAL PROCESSES IN HIGH MOUNTAIN REGIONS [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 Disturbance by geomorphic processes is a key factor for current and potential plant species distributions in high mountain regions. We implemented and tested an approach for the detection, quantification, and geomorphological classification of 3D ...
L. Müller +3 more
doaj +1 more source
Drones, 2023 Over the past decade, advancements in collection platforms such as unoccupied aerial systems (UAS), survey-grade GNSS, sensor packages, processing software, and spatial analytical tools have facilitated change detection analyses at an unprecedented ...
Christian G. Andresen +1 more
doaj +1 more source
Volumetric change analysis of the Cauvery delta topography using radar remote sensing
Egyptian Journal of Remote Sensing and Space Sciences, 2022 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
doaj +1 more source
The Use of UAVs for the Characterization and Analysis of Rocky Coasts
Drones, 2021 Rocky coasts represent three quarters of all coastlines worldwide. These areas are part of ecosystems of great ecological value, but their steep configuration and their elevation make field surveys difficult.
Alejandro Gómez-Pazo +1 more
doaj +1 more source
Quantifying small‐magnitude soil erosion: Geomorphic change detection at plot scale [PDF]
Land Degradation & Development, 2017 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
openaire +1 more source
Applied Sciences, 2023 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
doaj +1 more source
Remote Sensing, 2020 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
doaj +1 more source
Proceedings, 2020 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
doaj +1 more source