According to Dr. Nettles, local earthquakes are often recorded but rarely felt.
It is therefore vulnerable to landsliding, to undercutting by the streams, to acceleration by local earthquakes, to debris flows".
Two years ago, the Los Angeles Times unveiled Quakebot, which was able to collate, compile and publish reports on local earthquakes before they were even over.
The more familiar Richter Scale was devised to allow the sizes of local earthquakes in California to be compared, and can't actually cope with quakes on a scale of the great Sumatran one.
Already, in his earth-science sleuthing, Dr. Gates has shed new light not only on the pattern of local earthquakes but also on the Harriman watershed in a time of drought.
The major eruption of Mount St. Helens on May 18 , 1980 was much larger than anticipated, but a high number of local earthquakes and a visible bulge forming on the north flank of the mountain provided enough warning to encourage a partial evacuation of the surrounding area.
Architects and building engineers can work out their proposed design's preferred vibrational frequency using computer models and, using information from the Fourier transform of local earthquakes, tune the building's preferred frequency so that it has the best possible chance of remaining standing, should disaster strike.
Fig. 14 Observed variations in the P-wave amplitude of local earthquakes.
In rare cases, these eruptions can, in turn, trigger weak local earthquakes (Panahi 2005).
For this study, local earthquakes from 2005 to 2011 were analyzed.
Grey circles show the observation results of local earthquakes (Fig. 2b).
