A case study on the comparison of terrestrial methods and unmanned aerial vehicle technique in landslide surveys: Sarıcaeli landslide, Çanakkale, NW Turkey

Year 2018, Volume: 5 Issue: 3, 325 - 336, 02.12.2018

R. Cuneyt Erenoglu , Oya Erenoglu

https://doi.org/10.30897/ijegeo.468061

Cited By: 7

Abstract

Landslides are
natural disasters with some effects in the natural environment of the Earth. A
landslide has a structure that changes the natural topography boundaries by
releasing the forest cover and vegetation. Heavy precipitation and seismic
activities, as well as the mass movement that can be caused by landslides,
trigger the possible tendency to move the soil. The formation of the current
Digital Elevation model (DEM) of the area subject to landslides is important in
terms of determining the direction, character and effects of the landslide. With
the help of aerial photographs obtained by Unmanned Aerial Vehicle (UAV), the
production of high resolution and accurate DEMs is becoming increasingly
widespread. In this study, production and analysis of DEMs obtained from
different dated flight data and reflecting the topography of an active
landslide area were performed. Finally, it was compared with RTK-GNSS
measurement results in landslide areas. According to the results obtained in
the study, the production of DEM based on UAV provides higher accuracy at
centimeter level. In addition, the method used is more efficient, faster and lower
cost than other terrestrial techniques.

Keywords

Landslide, UAV, digital elevation model, 3D modeling, GPS-GNSS

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