Title
Analysis of Landslide Evolution Affecting Olive Groves Using UAV and Photogrammetric Techniques.
Abstract
This paper deals with the application of Unmanned Aerial Vehicles (UAV) techniques and high resolution photogrammetry to study the evolution of a landslide affecting olive groves. The last decade has seen an extensive use of UAV, a technology in clear progression in many environmental applications like landslide research. The methodology starts with the execution of UAV flights to acquire very high resolution images, which are oriented and georeferenced by means of aerial triangulation, bundle block adjustment and Structure from Motion (SfM) techniques, using ground control points (GCPs) as well as points transferred between flights. After Digital Surface Models (DSMs) and orthophotographs were obtained, both differential models and displacements at DSM check points between campaigns were calculated. Vertical and horizontal displacements in the range of a few decimeters to several meters were respectively measured. Finally, as the landslide occurred in an olive grove which presents a regular pattern, a semi-automatic approach to identifying and determining horizontal displacements between olive tree centroids was also developed. In conclusion, the study shows that landslide monitoring can be carried out with the required accuracy-in the order of 0.10 to 0.15 m-by means of the combination of non-invasive techniques such as UAV, photogrammetry and geographic information system (GIS).
Year
DOI
Venue
2016
10.3390/rs8100837
REMOTE SENSING
Keywords
Field
DocType
Unmanned Aerial Vehicle (UAV),photogrammetric techniques,Structure from Motion (SfM),landslide evolution,olive grove
Structure from motion,Geographic information system,Photogrammetry,Digital surface,Georeference,Remote sensing,Triangulation (social science),Landslide,Geology,Centroid
Journal
Volume
Issue
Citations 
8
10
1
PageRank 
References 
Authors
0.35
0
6