Earthquakes happen every day....
According to the National Earthquake Information Centre, there are around 20, 000 of them around the globe each year, amounting to approximately 55 quakes each day....
Many of these are small and go unnoticed, mere tremors. Others, more than a seven on the Richter scale, cause utter devastation.On average there are about 15 earthquakes every year with a magnitude of seven or more. The Richter scale is not a linear but logarithmic.As the numbers go up by one the
综合
每日快报-科学
2021-11-15 00:00:00.0