Explosion, Collapse, Earthquakes: Analysis of North Korea’s 2017 Nuclear Test

26 September 2018–The epicenter of the 3 September 2017 nuclear test explosion in North Korea occurred about 3.6 kilometers northwest of the country’s first nuclear test in October 2006, according to a new high-precision analysis of the explosion and its aftermath. The study published in Seismological Research Letters by Lian-Feng Zhao … Continue Reading »

Urban Geophone Array Offers New Look at Los Angeles Basin

1 August 2018–Using an array of coffee-can sized geophones deployed for about a month in backyards, golf courses and public parks, researchers collected enough data to allow them to map the depth and shape of the San Gabriel and San Bernardino sedimentary basins of Los Angeles, California. Seismologists think these … Continue Reading »