Search results for "seismic monitoring"

showing 3 items of 3 documents

Waveforms clustering and single-station location of microearthquake multiplets recorded in the northern Sicilian offshore region

2013

In 2009 December, the OBSLab-INGV (Istituto Nazionale di Geofisica e Vulcanologia) deployed an Ocean Bottom Seismometer with Hydrophone (OBS/H) near the epicentral area of the main shock of the Palermo seismic sequence of 2002. The monitoring activity had a total duration of about 8 months. During this experiment, the OBS/H recorded 247 very local microearthquakes, whose local magnitude is between -0.5 and 2.5 and TS - TP delay time between 0.2 and 5 s, almost all ofwhichwere undetected by the Italian National Seismic Network. This local microseismicity has been analysed using an innovative clustering technique that exploits the similarity between the waveforms generated by different events…

Earthquake source observationSettore GEO/10 - Geofisica Della Terra SolidaSingle stationlanguage.human_languageComputational seismologySeismicity and tectonicGeophysicsGeochemistry and PetrologylanguageWaveformSubmarine tectonics and volcanismSubmarine pipelineSeismic monitoring and test-ban treaty verificationMicroearthquakeCluster analysisSicilianGeologySeismologyComputational seismologyGeophysical Journal International
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Optimization of Low-Cost Monitoring Systems for On-Site Earthquake Early-Warning of Critical Infrastructures

2020

In the last years, monitoring systems based on low-cost and miniaturized sensors (MEMS) revealed as a very successful compromise between the availability of data and their quality. Also applications in the field of seismic and structural monitoring have been constantly increasing in term of number and variety of functions. Among these applications, the implementation of systems for earthquake early warning is a cutting-edge topic, mainly for its relevance for the society as millions of peoples in various regions of the world are exposed to high seismic hazard. This paper introduces the optimization of an already established seismic (and structural) monitoring system, that would make it suit…

Trigger algorithmSettore INF/01 - Informatica010504 meteorology & atmospheric sciencesWarning systemComputer sciencemedia_common.quotation_subjectStructural monitoringSeismic monitoring010502 geochemistry & geophysics01 natural sciencesField (computer science)Seismic waveReliability engineeringTerm (time)Variety (cybernetics)MEMSSeismic hazardSettore GEO/11 - Geofisica ApplicataRelevance (information retrieval)Quality (business)Earthquake early warning0105 earth and related environmental sciencesmedia_common
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Reti sismiche urbane per monitoraggio sismico monitoraggio strutturale ed allerta precoce

2021

In questa tesi, viene effettuato un analisi preliminare in cui si mette in evidenza come l'italia sia un paese a rischio sismico, poichè possiede molti centri storici con strutture non progettate per eventi sismici di media entità. Si è prestato molta attenzione su quante vite umane vengono salvate dopo un terremoto catastrofico. L'analisi fa emergere come, è importante essere tempestivi nell'estrarre le persone rimaste sotto le macerie, poichè la percentuale di persone estratte vive si mantiene alta solo entro le 48 ore dall'evento. Dopo 96 ore questa percentule si attesta a 0. In eventi passati spesso i soccorsi sono arrivati con giorni di ritardo nelle zone più devastate. L'obbiettivo ch…

early warningseismic monitoringsmart cityphase pikingSettore GEO/11 - Geofisica Applicatastructural monitoringdeep learningrotational sensorvelocimeter sensorMEMS accelerometer
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