Abstract
Landslides are posing a significant global hazard as they occur instantaneously with devastating consequences. The development of new remote sensing technologies and innovative processing techniques over the past few years opened up new horizons and perspectives in landslide monitoring research. The purpose of the current research is the integrated monitoring of an active landslide, located in Western Greece, using low-cost and high-repeatability remote sensing data like those obtained by unmanned aerial vehicles (UAVs). Repeated UAV campaigns and global navigation satellite systems (GNSS) surveys were performed to assess the activity of the landslide and determine its kinematic behavior. UAV data were processed using structure from motion (SfM) photogrammetry and the generated high-detailed orthophotos and digital surface models (DSMs) were submitted in further processing procedure in an ArcGIS environment. Regarding the GNSS data, a new low-cost technique for the estimation of the direction and the rate of movement of the displaced material was developed. The repeated measurements were displayed in a vector format in a three-axis diagram. In addition, GNSS measurements were used to verify the results of the photogrammetric processing. The final assessment was carried out taking into account geological data such as petrographic and crystallographic features of the material of the landslide. It was observed that the lithology and consequently the petrographic properties of the material plays a key role regarding the activity of the landslide.
Highlights
The development of new remote sensing technologies and innovative processing techniques over the past few years opened up new horizons and perspectives in landslide monitoring research
The purpose of our research is the surveying of an energetic landslide, located in the prefecture of Achaia, using low-cost and high-repeatability remote sensing data obtained from unmanned aerial vehicles (UAVs) and global navigation satellite systems (GNSS) surveys
The objective researchresearch was theis integrated in Figure 5. of Asanalready mentioned, thebase objective of this research was the integrated investigation active landslide on the of detail mapping of the landslide and the investigation of an active on the base mapping of the landslide andand the continuous monitoring forlandslide the determination ofof itsdetail activity
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Mass movements constitute a broad term that encompasses any movement of ground material down a slope caused by either sliding, falling, toppling, flowing, or creeping [1,2]. Landslides or any other type of mass movement usually occur instantaneously with devastating consequences and are posing a significant hazard in global scale. Their activation is regulated by several geological, morphological, hydrological, and anthropogenic factors such as tectonics and lithological properties, volcanic eruptions, steepness of slopes, erosion process, intense rainfalls, traffic vibrations, urbanization, etc. The scientific community around the world has been dealing with landslide research for years, in order to provide proper information to planners, geotechnical consultants, or governments for efficient landslide management that enhances the conservation of the physical environment and infrastructures as well as the human safety
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