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Information on subsoil geological structure in the city of Catania (Eastern Sicily) from microtremor measurements
microtremors H/V technique sire response subsoil geological structure
2015/9/28
Nakamuras technique, or the H/V spectral ratio method, has been applied to microtremor measurements carried out in the urban area of Catania (Eastern Sicily) to obtain information on the geological st...
A joint inversion of apparent resistivity and peak-period of microtremor horizontal-to-vertical spectrum for shallow soil profile
microtremors horizontal-to-vertical spectrum S-wave velocity vertical electrical sounding resistivity simulated annealing
2009/3/5
We propose a new technique for a joint inversion of apparent resistivity data from a vertical electrical sounding and peak-period of spectral ratio of horizontal microtremors to vertical one in order ...
General formulation for analysis methods of three-component, microtremor circular arrays
microtremor phase velocity array observation
2009/3/5
We present general formulation that can compose various methods to determine phase velocities, arriving directions of Rayleigh and Love waves, and particle motions of Rayleigh waves, by using a circul...
Estimating the shear velocity profile of Quaternary silts using microtremor array (SPAC) measurements
microtremor method Rayleigh waves sediment thickness
2009/3/5
We have used the microtremor method, with arrays of up to 96 m diameter, to carry out non-invasive estimation of shear-wave velocity profiles to a depth of 30 to 50 m in unconsolidated Quaternary Yarr...
Application of microtremor array explorations for architectural seismic design
microtremor array exploration architectural seismic design performance based design
2009/3/4
Microtremor array explorations with broad-band period have been performed at a lot of sites for estimating deep and shallow S-wave velocity structures in the urban area. It has been conducted quite of...
Application of microtremor array exploration for seismic retrofit strategy learnt from the damages of the electric power facilities during recent large earthquakes
microtremor array exploration bushing electrical substation S-wave velocity structure seismic retrofit
2009/3/4
In order to reduce the bushing damage that was often experienced in electrical substation during large earthquakes in recent years, we investigated the applicability of microtremor array exploration ...
Detection of directivity in seismic site response from microtremor spectral analysis
seismic site microtremor spectral analysis
2009/12/30
Recent observations have shown that slope response to seismic shaking can be characterised by directional variations of a factor of 2–3 or larger, with maxima oriented along local topography features ...