We introduce here the Earthquake Network project which implements a world-wide smartphone-based sensor network for the detection of earthquakes. Thanks to the accelerometric sensor, smartphones possibly detect the waves of a quake and report the event to a cloud computing infrastructure. In this work, we propose a solution to the detection problem based on statistical modelling the arrival time...

Seismic risk assessment of new and existing structures has a long history, which is based on the development specific methods for seismic hazard vulnerability analyses. Performance-based earthquake engineering natural evolution integration all these aspects that nowadays implemented in several precodes. However, some critical are not yet completely clarified. As matter fact, analysis suffers so...

Synopsis This study introduces a new approach (based on the Continuous Wavelet Transform Modulus Maxima method) to describe qualitatively and quantitatively the complex temporal patterns of seismicity, their multifractal and clustering properties in particular. Firstly, we analyse the temporal characteristics of intermediate depth seismic activity in the Vrancea region, Romania. The second case...

Numerical analysis applied to the Beznar dam accelerograms (longitudinal and transversal components) shows that the Fourier amplítude spectrum is a good approxímatíon to the pseudo-velocíty spectra. Thís fact makes possible to use displacement ar velocíty seismograrns to generate acceleration of the ground in places where acceleration data are not avallable. Maximae accelerations determined nea...