Sentence examples for migration of hypocenters from inspiring English sources

We then investigate the migration of hypocenters in detail using the relocated hypocenters, considering the accuracy of the hypocenter locations.

A hypothesis that the cluster activity was triggered by fluid, probably associated with a slow slip for the first hour, was put forward to explain both the migration of hypocenters and small stress drops of the cluster activity.

As mentioned earlier, the migration of hypocenters is characteristic of seismic cluster A. To investigate the cluster's spatiotemporal variation of seismicity in detail, we relocated the hypocenters using the hypoDD location technique (Waldhauser and Ellsworth 2000).

The general temporal trend of diffusivity implies that the migration of hypocenters was accelerated after a pathway for fluids was formed by fracturing of the wall rock during the initial stage of seismic activity.

The hydraulic diffusivity of the cluster was in the range of 0.01 to 0.7 m2/s and increased with time, implying that the migration of hypocenters accelerated after a pathway for fluids was formed by fracturing of the wall rock during the initial stage of seismic activity.

The leading hypothesis is that the cluster activity was associated with a decrease in the shear strength due to an increase in pore pressure, and this can explain both the migration of hypocenters and the small stress drops associated with the cluster activity.

Importantly, the increase of pore pressure can quantitatively account for both the observed temporal change in the stress drop and the migration of the hypocenters.

We characterized the migration of the hypocenters and found that earthquakes during the cluster activity included earthquakes with smaller values of stress drop.

Furthermore, we focus on the immediate precursors that began less than 10 min before the phreatic eruption, including the up-dip and lateral migrations of earthquake hypocenters, an accelerated increase in the amplitudes of pre-eruptive tremors, and tiltmeter changes observed near the summit.

As shown in Fig. 6, we characterized the hypocenter migration of the cluster activity in the Tanzawa Mountains at the end of January 2012.

The diffusion of the fluid from the upper end of the crack to the surface (approximately 150 m) takes a longer time given the hydraulic diffusivity of the porous media of 0.5 1.0 m2/s, which was estimated on the basis of the hypocenter migration of the earthquake swarms in the Hakone volcano and corresponds to a migration velocity of several tens of meters per hour (Yukutake et al. 2011).