'Seismic noise' halved during lockdown, study shows
Ground vibrations caused by traffic and industrial work halved globally during the coronavirus lockdown, a study shows. Social distancing, fewer cars on roads and drops in tourism and travel resulted in the 'longest and most pronounced quiet period' of seismic noise in recorded history. Seismic noise refers to vibrations in the ground, caused by traffic or heavy machinery and natural phenomena such as earthquakes and adverse weather. Global human-caused (anthropogenic) seismic noise dropped by as much as 50 per cent since March as counties entered lockdown to halt the spread of SARS-CoV-...