1,721,007 research outputs found
Il rumore sismico in ambiente lagunare, risposta sismica locale del sottosuolo ed edifici storici
No full textImportance of phase in the interpretation of telluric and magnetotelluric measurements
No full textAfter analysing the phase behaviour of magnetotelluric impedance, the structural information derived from the amplitudes of the natural electric (telluric) field are compared with those supplied by the phases of the field itself. Analysis of 2-D model thus demonstrates the validity of phase information, which has good resolving power in the study of buried 2-D structures. -Author
Deep magnetic investigation in the Eastern Veneto (Northern Italy)
No full textThe results of the geophysical interpretation are presented, mainly in terms of structural alignments and of estimates of the mean depths of the causative bodies. Particularly 3 distinct structural areas have been singled out, namely W of Bassano, the Villa del Conte graben and E of Montebelluna. The magnetic strikes result in good agreement with the existent structural knowledge of the area. Finally a possible correlation has been proposed between highly ferretized quaternary fluvio-glacial events and the depth distribution of the shallower magnetic horizon.-from Autho
Sismicità della Provincia di Venezia in Termini Storici e di Classificazione Territoriale.
No full textA new attempt at automatic data processing in Magnetotellurics
No full textConsidering the magnetotelluric (MT) signal in its physical reality as a stochastic process, we present here a new methodology for the search and analysis of the wave packets which are most compatible with theoretical calculation requirements. In adapting the length of the physical data blocks to a small number of oscillations of the signal, we are able to identify those data ensembles which show particularly high rotated coherence values (higher than 0.9). An example of such calculations is supplied by means of the analysis of an MT sounding which demonstrates the validity of this procedure. © 1979
La valutazione del parametro Vs30 e del periodo proprio di vibrazione: il ruolo della Geofisica
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