The concrete slab floors were secured to be able to withstand intense shaking.
Oklahoma Geological Survey researcher Austin Holland told the Tulsa television station KOTV that the earthquake and aftershocks occurred on a known fault line, The A.P. said, adding that residents in Prague and Sparks felt an intense shaking.
According to the new study, released by the panel of seismic experts a week and a half ago, a 9.1-magnitude quake in the Nankai Trough off Japan would trigger intense shaking and tsunamis along a wide stretch of Japan from Tokyo southward, an area many times longer than the Tohoku coastline that was ravaged last year.
Both Ni 2p and Co 2p core level region shows a complex spectral profile (Fig. 3) containing mixture of core level and intense shake-up satellite signals towards the higher BE side of the main peak, which can be ascribed to the multi-electron excitation processes [42].
But more intense shaking caused the ants to spring into action.
But intense shaking may disrupt the elastic forces between individual grains, which can then absorb some of the wave's energy as they rub together.
The Nankai-Suruga Trough, the subduction zone that lies immediately south of Japan's densely populated southern coastline, generates devastating great earthquakes (magnitude > 8) characterised by intense shaking, crustal deformation and tsunami generation.
For intense shaking, the nonlinear effects, including gapping, sliding and uplift, are greatest in the immediate vicinity of the soil-structure boundary, and these cannot be captured using equivalent-linear techniques.
Few seismic instruments recorded motions close to the remote fault, but researchers found an unusually narrow zone of intense shaking by looking at the positions of thousands of landslides and analyzing 3313 accounts submitted by residents over the Internet.
Thus, western earthquakes result in intense shaking close to the epicenter, but fade more quickly the farther the earthquakes travel.
San Bernardino has one of the largest concentrations of earthquake-vulnerable brick buildings in a location with a high risk of intense shaking.
