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Title: Multi-technique approach to rockfall monitoring in the Montserrat massif (Catalonia, NE Spain)
Author: Janeras Casanova, Marc
Jara, J.A.
Royán Cordero, Manuel Jesús
Vilaplana, Joan Manuel
Aguasca, Albert
Fàbregas, X.
Gili, J.A.
Buxó, P.
Keywords: Esllavissades
Moviments de massa
Montserrat (Catalunya : Massís)
Vigilància electrònica
Montserrat Mountains (Catalonia)
Electronic surveillance
Issue Date: 28-Dec-2016
Publisher: Elsevier B.V.
Abstract: Montserrat Mountain is located near Barcelona in Catalonia, in the northeast of Spain, and its massif is formed by conglomerate interleaved by siltstone/sandstone with steep slopes very prone to rockfalls. The increasing number of visitors in the monastery area, reaching 2.4 million per year, has highlighted the risk derived from rockfalls for this building area and also for the terrestrial accesses, both roads and the rack railway. A risk mitigation plan has been launched, and its first phase during 2014-2016 has been focused largely on testing several monitoring techniques for their later implementation. The results of the pilot tests, performed as a development from previous sparse experiences and data, are presented together with the first insights obtained. These tests combine four monitoring techniques under different conditions of continuity in space and time domains, which are: displacement monitoring with Ground-based Synthetic Aperture Radar and characterization at slope scale, with an extremely non-uniform atmospheric phase screen due to the stepped topography and atmosphere stratification; Terrestrial Laser Scanner surveys quantifying the frequency of small or even previously unnoticed rockfalls, and monitoring rock block centimetre scale displacements; the monitoring of rock joints implemented through a wireless sensor network with an ad hoc design of ZigBee loggers developed by ICGC; and, finally, monitoring singular rock needles with Total Station.
Note: Versió postprint del document publicat a:
It is part of: Engineering Geology, 2016, vol. 219, p. 4-20
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ISSN: 0013-7952
Appears in Collections:Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)

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