2020年8月3日 星期一

Coronavirus shutdowns led to “the longest and most coherent global seismic noise reduction in recorded history,” scientists report.


Scientists measured a drop in the global seismic din tied to human activity during pandemic lockdown. In New York’s Central Park, vibrations on Sunday nights during the peak lockdown period were 10 percent lower than previously measured.
Jeenah Moon for The New York Times

With Covid-19, a Seismic Quiet Like No Other

Coronavirus shutdowns led to “the longest and most coherent global seismic noise reduction in recorded history,” scientists report.


In geophysics, geology, civil engineering, and related disciplines, seismic noise is a generic name for a relatively persistent vibration of the ground, due to a multitude of causes, that is often a non-interpretable or unwanted component of signals recorded by seismometers.

Seismic noise - Wikipedia

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