| Digg Popular Topics | News Business Technology Science Entertainment Gaming Sports Shopping Videos MISC Post BAR |  |
| HOME-->Forums-->Science |   | Log out |
Earthquake of magnitude and intensity | ||
[Q.]  Earthquake of magnitude and intensity | |
|
Started By yuan Time:2008-5-15 14:32:15 [Reads:23] Back |
Caused by the earthquake ground vibration is a complex movement. Earthquake the size and extent of damage from the magnitude and intensity to measure, experts Seismological Bureau in Henan Province had to explain this. This reporter has learned that the earthquake caused by ground vibration by the P-wave and S-wave interaction results. In Zhenzhong Qu, the P-wave bumps from top to bottom to the ground, shaking S-wave to ground level. As P-wave spread faster, also decay faster, slower S-wave transmission, the decay also slower, so far away from the epicenter, are often not aware of bumps from top to bottom, but can feel that the level of shaking. With the size of the earthquake itself to that magnitude, according to the release of the earthquake wave energy flexibility to determine the size of magnitude, China's general use of the Richter scale. Usually less than three earthquakes it difficult to feel out, known as the "Seismic"; three -4.5 magnitude earthquake can be felt by people, known as the "felt tremors" 4.5 magnitude earthquake that -6 "Destructive earthquake"; six earthquakes as "strong devastating earthquake." Each difference between a magnitude of the earthquake difference between the energy released about 30 times. Earthquake, a sentinel ground vibration strength is the degree of "seismic intensity." Researcher at the Seismological Bureau of Henan Liu Yao-hing said that although the magnitude and intensity of the earthquake can reflect the strong or weak, but the meaning is different. Earthquake with a magnitude only one, but because of the intensity varies in different areas of different intensity. According to the feeling of building and ground damage, China's seismic intensity will be divided into 12 degrees. Tag phrase:Earthquake of magnitude and intensity Forums phrase:Earthquake of magnitude and intensity |
| Pages : |