1,721,145 research outputs found
INVESTIGATING LINEAR AND NONLINEAR BEHAVIOURS IN TIME DYNAMICS OF OBSERVATIONAL SEISMIC SEQUENCES
No full text1/f(beta) fluctuations and self-similarity in earthquake dynamics: observational evidences in southern Italy
No full textJoint ERT, SP and IP Investigations at Waste Dump of Savoia di Lucania (Southern Italy)
No full textThe aim of this work was the joint application of different electric geophysical methods for studying the landfill of Savoia di Lucania (Southern Italy). This landfill for its engineering features and small dimensions (70m x 30m x 6m) represents an optimal test site to assess a geophysical survey protocol survey for municipal solid waste landfills. However, the proposed protocol should be used in time lapse way to obtain a monitoring system for waste deposits. The landfill of Savoia di Lucania has been built with reinforced concrete material and coated with a High Density Polyethylene (HDPE) liner. Three Electrical Resistivity Tomography (ERT), two Self Potential (SP) map surveys and one Induced Polarization (IP) section have been performed both in the surrounding area and inside the waste landfill. The geophysical investigations well defined the buried boundaries of the landfill basin and localized the leachate accumulation zones inside the dumpsite. The comparison of our results with other engineering and geological investigations could be the key for evaluating the integrity of the HDPE liner. Finally, the integration of the ERT, IP and SP methods seems to be a promising tool for studying and for designing new monitoring systems able to perform a time-lapse analysis of waste landfill geometry and integrity
MONO AND MULTI-FRACTAL INVESTIGATION OF SCALING PROPERTIES IN TEMPORAL PATTERNS OF SEISMIC SEQUENCES
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Integration of magnetometric, gpr and geoelectric measurements applied to the archaeological site of Viggiano (Southern Italy, Agri Valley-Basilicata)
No full textThe results of a geophysical survey carried out at the archaeological site of Masseria Nigro, located on a fluvial terrace on the north-eastern flank of the Agri valley (Viggiano, Basilicata Region), are presented and discussed. The site includes an important ancient structure, developed in successive phases between the 4th and 3rd centuries BC and destroyed after the Roman conquest. Magnetic mapping, GPR profiling and electrical resistivity tomography were applied in the course of geophysical exploration in the archaeological area. The application of these methods revealed information about buried ancient walls, helping to define the limits of the whole building. During the first phase of the excavation, archaeologists targeted only the western part of the ancient structure (about 1000 m2), but the geophysical survey performed in a second phase was able to cover the entire ancient structure (1400 m2), enabling the archaeologists to define the extent of the buried structures. Our findings confirmed the hypothesis of the larger extent of the archaeological area in the eastern part and revealed the complete plan of the ancient building
Multifractal features in temporal patterns of seismicity in southern Apennine Chain (Italy)
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