Meanwhile the clock is ticking — California has the highest density of fault lines in urban areas in the U.S. and a 99 percent chance of hosting a magnitude 6.7 or stronger quake in the next 30 years, according to a report recently published in Nature by Richard Allen, director of the Berkeley lab and one of the preeminent seismologists in the country. (scientificamerican.com)
For centuries, mysterious lights have popped up in the wake of strong quakes (newscientist.com)
In 1964 a region of this same tectonic clash, called the Alaska — Aleutian Subduction Zone, produced the magnitude 9.2 «Good Friday» earthquake, the second - strongest quake ever recorded. (scientificamerican.com)