#Beijing Earthquake # [Earthquake Common Sense] Generally refers to earthquakes less than 1 magnitude as ultra-microseismic; M≥ magnitude 1, less than 3 is called weak earthquake or microsonic, if the source is not very shallow, this kind of earthquake

#Beijing earthquake #【Earthquake Common Sense】 Earthquakes less than 1 are generally called ultramicroquakes; M ≥ 1, less than 3 is called weak earthquake or microsquake, if the source is not very shallow, this kind of earthquake is generally not easy to perceive; M ≥ 3, less than 4.5 is called a sentient earthquake This earthquake can be felt, but generally does not cause damage; M ≥ 4.5, less than 6 is called a medium and strong earthquake, which belongs to the earthquake that can cause damage, but the severity of the damage is also related to various factors such as the depth of the source, the distance between the epicenter, and so on; M ≥ 6. 7. Less than 7 is called a strong earthquake; M≥ 7, and less than 8 is called a large earthquake; Magnitude 8 and above are called giant earthquakes.