on 11th of august 2012 the region was surprisingly struck by a shallow mw 6.4 (usgs) earthquake with pure right-lateral strike-slip character only about 50 km north of the north-tabriz fault. an east-west striking surface rupture of about 20 km length was observed in the field by geological survey of iran. only 11 minutes later and about 6 km further nw a second shallow event with mw 6.2 occurr...

Ground motion induced beam jitter plays an important role for many kinds of accelerators, like future linear colliders, synchrotron radiation sources or storage rings. The resulting beam orbit vibration potentially leads to luminosity degradation in colliding beam facilities due to beam offset at the interaction point and/or emittance growth. The sensitivity of beam orbits to quadrupole motion ...

Ground-motion (attenuation) relations are used to estimate strong ground motion for many engineering and seismological applications. Where strongmotion recordings are abundant, these relations are developed empirically from strong-motion recordings. Where recordings are limited, they are often developed from seismological models using stochastic and theoretical methods. However, there is a larg...

Most instruments used in seismological practice to record ground motion are pendulum seismographs, velocigraphs, or accelerographs. In most cases it is assumed that seismic instruments are only sensitive to the translational motion of the instrument’s base. In this study the full equation of pendulum motion, including the inputs of rotations and tilts, is considered. It is shown that tilting th...

Ground motion prediction equations (GMPE) relate the strong ground shaking parameters to variables describing earthquake source, path, and on-site impact. From many available GMPEs, we select those models that are suitable for use in seismic hazard assessment take into account regional tectonic conditions. We present a GMPE selection procedure evaluates multidimensional trends (e.g., magnitude,...

BACKGROUND Non-invasive evaluation of in-shoe foot motion has traditionally been difficult. Recently a novel 'stretch-sensor' was proposed as an easy and reliable method to measure dynamic foot (navicular) motion. Further validation of this method is needed to determine how different gait analysis protocols affect dynamic navicular motion. METHODS Potential differences in magnitude and peak v...