Fractal patterns, similar to Henry's machine-generated effects, have been found to exist when plotting volcanic tremors, weather systems, the ECG of heart beats and the electroencephalographic data of brain activity . ( Briggs 1994 [ 1992 ])
22.
Motioning to two seismograph needles jiggling in a cluttered hilltop observatory seven miles from Mayon, Corpuz said 84 volcanic tremors hit the volcano in the previous 24 hours _ an indication that magma is still moving upward from within.
23.
The concern was not Saturday's small steam release, " but the nature of the volcanic tremor signal that followed, " he said . " It was far stronger after today's steam eruption " than the tremor that followed Friday's blast.
24.
Seismic arrays are not only used to monitor earthquakes and nuclear tests, but also used as a tool for investigating nature and source regions of microseisms as well as locating and tracking volcanic tremor and analyzing complex seismic wave-field properties in volcanic areas.
25.
On 14 February volcanic tremors began to be felt, but just as the populous had assumed that the swarm had ended, on 15 February 1964, around 7 : 00 a . m ., the tremors resumed with a violent earthquake ( VII-VIII on the Mercalli intensity scale, recorded in the village of Terreiros ), that resulted in destruction of homes.
