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Dragos Armand Stanica, Institute of Geodynamics of the Romanian Academy (Romania)
Dumitru Stanica, Institute of Geodynamics of the Romanian Academy (Romania)
Constantin Diacopolos, Institute of Geodynamics of the Romanian Academy (Romania)
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The paper is focused on the presentation of the real-time electromagnetic monitoring system, to better understand its efficiency for broad application in the natural hazard assessment and risk mitigation due to the landslides activity. The main objective was to implement this complex system that may provide near early-warning against the risk arising from landslides (test site) triggered by the earthquakes (EQ) occurred in the seismic active Vrancea zone (Romania). The main activities that have been accomplished consist of: (i) innovation in integrated geo-sensors structure for network conditions; (ii) implementation and continuous improvement of the monitoring system depending on the landslides test sites conditions; (iii) real-time signals processing for pattern recognition in pre disaster and at disaster circumstances; (iv) assessment and quantification of the geodynamic precursory parameters related both to the intermediate depth earthquakes and landslides associated; (v) provision of near early-warning against the risk arising from landslides process. Thus, the specific methodology and software packages have been applied for obtaining, in real time, all the important electromagnetic parameters and to point out their anomalous behavior versus the specific pattern pre-established in non geodynamic conditions.
Additionally, by combining different data types and analysis techniques, and also by merging electromagnetic parameters with electromagnetic tomographic images and with low frequency electric signals occurred prior the stress to reach a critical value, a compelling dynamical paradigm, in which is emphasized a correlation between electromagnetic parameters and the earthquakes' magnitudes, was carried out. In consequence, by analyzing the data from the Provita de Sus (test site), it was possible to assign the increase of the landslide activity related to the local fault which has been reactivated by the EQ occurred in the Vrancea zone. In the end, this paper illustrate the stage of the system implementation and to what extent the results carried out in the Provita de Sus test site may contribute on understanding such kind of phenomenon, in order to provide the information necessary for disaster mitigation.
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