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Lasocki, Stanisław
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Lasocki, Stanisław
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- PublicationOpen AccessFractal dimension confidence interval estimation of epicentral distributions(1999-10)
; ; ; ; ;De Luca, L.; Dipartimento di Chimica e Fisica della Terra (CFTA), Università di Palermo, Italy ;Lasocki, S.; Institute of Geophysics, University of Mining and Metallurgy, Krakow, Poland ;Luzio, D.; Dipartimento di Chimica e Fisica della Terra (CFTA), Università di Palermo, Italy ;Vitale, M.; Dipartimento di Chimica e Fisica della Terra (CFTA), Università di Palermo, Italy; ; ; Estimates of the fractal dimension of hypocentral distributions require evaluating the range of independent variables in which fractal parameters exhibit a power law. Systematic and accidental errors are produced mainly by the subjective selection of this range, the insufficiency of data sets as well as by hypocenter mislocations. Therefore it is very important to determine the confidence intervals which are associated with fractal dimension estimates. The effects of various sources of errors are studied using different geometric clusters of epicenters, which have been synthetically generated using a multicluster algorithm with different hierarchical levels, so as to reproduce some characteristics of the patterns typical of real epicenter distributions. Subsequently, groups of differently sized subsets of synthetic epicenters were obtained by randomly sampling each distribution. Confidence intervals of fractal dimensions were thus calculated using all the estimates obtained for the various subsets. This procedure was also tested on real seismic data, consisting of epicentral distributions in three Sicilian areas and five clusters of mining-induced seismic events (Wujek coal mine, Poland). In that analysis both correlation dimensions and their confidence intervals were taken into account.159 376 - PublicationOpen AccessAn open data infrastructure for the study of anthropogenic hazards linked to georesource exploitation(2020-03-11)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;; ; ; ; ; ; ; ; ; ; ; ; ;; ; ; ; ; ; ; ; ; ; ; ; ;Mining, water-reservoir impoundment, underground gas storage, geothermal energy exploitation and hydrocarbon extraction have the potential to cause rock deformation and earthquakes, which may be hazardous for people, infrastructure and the environment. Restricted access to data constitutes a barrier to assessing and mitigating the associated hazards. Thematic Core Service Anthropogenic Hazards (TCS AH) of the European Plate Observing System (EPOS) provides a novel e-research infrastructure. The core of this infrastructure, the IS-EPOS Platform (tcs.ah-epos.eu) connected to international data storage nodes offers open access to large grouped datasets (here termed episodes), comprising geoscientific and associated data from industrial activity along with a large set of embedded applications for their efficient data processing, analysis and visualization. The novel team-working features of the IS-EPOS Platform facilitate collaborative and interdisciplinary scientific research, public understanding of science, citizen science applications, knowledge dissemination, data-informed policy-making and the teaching of anthropogenic hazards related to georesource exploitation. TCS AH is one of 10 thematic core services forming EPOS, a solid earth science European Research Infrastructure Consortium (ERIC) (www.epos-ip.org).368 18 - PublicationOpen AccessEvidences of Complexity of Magnitude Distribution, Obtained from a Non-Parametric Testing Procedure(2007-05-31)
; ;Lasocki, S.; University of Science and Technology, Krakow, Poland; ; ; ; ;Cocco, Massimo; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Console, Rodolfo; INGV, Rome, Italy ;Wiemer, Stefan; ETH, Zurich, Switzerland; ; Evidences of Complexity of Magnitude Distribution, Obtained from a Non-Parametric Testing Procedure94 249