The seismic signals, recorded at up to 2500 km distance, with the closest station at ~1000 km, were found to be anti-correlated between the two families56. This is consistent with the flipped focal mechanism, the small inter-event distance compared to the source-receiver distances and ...
Earthquake nests are volumes of the Earth characterised by high, persistent and spatially isolated seismic activity58. The Bucaramanga nest, Colombia, is the most dense seismic nest on Earth59. There, an average of 8 events per year (with body wave magnitudes larger than mb 4.7)60within a com...