On 24 August 2016, a Mw 6.0 earthquake started damaging seismic sequence in central Italy. The historical center of Amatrice village reached the XI degree (MCS scale) but high vulnerability alone could not explain heavy damage. Unfortunately, at time only AMT station, 200 m away from downtown, recorded mainshock, whereas tens temporary stations were installed afterwards. We propose method to si...

The aerial 3D laser scanner is needed for scanning the areas that cannot be observed from the ground. Since the laser scanning takes time, the obtained range data is distorted due to the sensor motion while scanning. This paper presents a rectification method for the distorted range data by aligning each scan line to the 3D data obtained from the ground. To avoid the instability and ambiguity o...

Ground-motion simulations provide input time history data required for designing and assessing structures; however, the conducted by currently available tools only match design spectrum without verifying if statistical characteristics of duration are satisfied. A ground-motion simulation software was developed to resolve these issues. The employs machine learning methods amplitude, spectrum, fe...

Dynamic rupture process of earthquake fault and its near-field strong ground motions are simulated by time-space-decoupled, explicit finite element method with multi-transmitting formula (MTF) of artificial boundary in this paper. This decoupled, explicit method has advantage to easily incorporate into time-step simulation of dynamic rupture process on earthquake fault, as well as wave motions....