Heyelan Hareketlerinin Fiber Optik Sistemlerle İzlenmesi ve Değerlendirilmesi

Date

2017-11-24

Author

Arslan, Arzu
Koçkar, Mustafa Kerem
Akgün, Haluk

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Landslides are one of the most destructive natural hazards in Turkey. There are several contributing factors that cause landslides such as geological and morphological characteristics, precipitation processes, groundwater level fluctuations, daily temperature changes, snow melt and seismic effects. The purpose of this study is to develop an in-situ monitoring and early warning system by using optical fibers in order to evaluate the effect of contributing factors on the deformation characteristics and to decrease the risk caused from landslides. During this study, a system that is composed of fiber optic cables and a device that sends laser signals and collects backscattered light; referred to as BOTDA (Brillouin Optical Time Domain Analyzer) has been used. This system has a 1 m spatial resolution and it can detect strain with a 0.1με resolution along a 3 km cable. The system has been succesfully implemented for relating the strain on the cable with displacement due to its high sensitivity and continuous data gathering properties. For that purpose, the real case practice of the system has been implemented in a landslide area in Kocaeli. The deformation characteristics of the data gathered in the landslide region by fiber optic system have been processed along with the precipitation parameters. Moreover, the studies regarding the influence of other parameters such as seismic activity and groundwater level on the landslide movement are in progress. This study reveals that the optical fiber system already used as a monitoring system is also capable of detecting deformations and could be used as an early warning system in landslide prone regions.

Subject Keywords

Landslide monitoring system, Optical fiber system, Early warning system, Kocaeli

URI

https://hdl.handle.net/11511/79628

Conference Name

7. Uluslararası Katılımlı Geoteknik Sempozyumu

Collections

Department of Geological Engineering, Conference / Seminar

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Citation Formats

A. Arslan, M. K. Koçkar, and H. Akgün, “Heyelan Hareketlerinin Fiber Optik Sistemlerle İzlenmesi ve Değerlendirilmesi,” presented at the 7. Uluslararası Katılımlı Geoteknik Sempozyumu, İstanbul, Türkiye, 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/79628.