How much more energy is released by an Mw8 earthquake than a Mw6 earthquake?
A magnitude 8 earthquake is 100 times more powerful than a magnitude 6 earthquake. In order to find the energy released I think you need to calculate the seismic moment of both earthquakes. I do not know how to do this, nor do I know if magnitude is directly correlated with seismic moment, but I think that is the information needed to answer your question.
How much stronger is a richter scale magnitude 7 earthquake than a richter scale magnitude 3 earthquake?
A magnitude 4 earthquake is 10 times stronger than a magnitude 3 earthquake... A magnitude 5 earthquake is 100 times stronger than a magnitude 3 earthquake... A magnitude 6 earthquake is 1000 times stronger than a magnitude 3 earthquake... So... A magnitude 7 earthquake is 10,000 times stronger than a magnitude 3 earthquake!
How many times stronger is a 7.2 earthquake compared to a 4.3 earthquake on the richter scale?
I need to know how to work this question out. I think the richter scale works a base of 10 but that is all I know of this type of problem. If anyone can help, I'd really appreciate it.
Earthquake solution problem help!?
The 1906 San Francisco earthquake had a magnitude of 8.3 on the Richter scale. At the same time in South America there was an eathquake with magnitude 4.8 that caused only minor damage. How many times more intense was the San Francisco earthquake than the South American one?
How are earthquakes measured using the richter scale?
The Richter scale grows by powers of 10. An increase of 1 point means the strength of a quake is 10 time greater than the level before it. Here's how it works: An earthquake registering 2.0 on the Richter scale is 10 times stronger than a quake registering 1.0. A quake registering 3.0 is 10 X 10 or 100 times stronger than a quake registering 1.0 A 4.0 is 10 X 10 X 10 or 1,000 times greater than 1.0 and so on. The Richter Scale is used to rate the magnitude of an earthquake -- the amount of energy it released. This is calculated using information gathered by a seismograph. The Richter Scale is logarithmic, meaning that whole-number jumps indicate a tenfold increase. In this case, the increase is in wave amplitude. That is, the wave amplitude in a level 6 earthquake is 10 times greater than in a level 5 earthquake, and the amplitude increases 100 times between a level 7 earthquake and a level 9 earthquake. The amount of energy released increases 31.7 times between whole number values. Here are some examples: 9.0 — Causes complete devastation and large-scale loss of life. 8.0 — Very few buildings stay up. Bridges fall down. Underground pipes burst. Railroad rails bend. Large rocks move. Smaller objects are tossed into the air. Some objects are swallowed up by the earth. 7.0 — It is hard to keep your balance. The ground cracks. Roads shake. Weak buildings fall down. Other buildings are badly damaged. 6.0 — Pictures can fall off walls. Furniture moves. In some buildings, walls may crack. 5.0 — If you are in a car, it may rock. Glasses and dishes may rattle. Windows may break. 4.0 — Buildings shake a little. It feels like a truck is passing by your house. 3.0 — You may notice this quake if you are sitting still, or upstairs in a house. A hanging object, like a model airplane, may swing. 2.0 — Trees sway. Small ponds ripple. Doors swing slowly. But you can't tell an earthquake is to blame. 1.0 — Earthquakes this small happen below ground. You can't feel them. See the sources below for additional information.
How much bigger is a 9.0 earthquake compared to a 7.0 earthquake?
100 times more powerful. The Richter scale is logarithmic. Every number is 10 times as strong as the one below.
How long does a magnitude 7 earthquake last?
The fault rupture (slip on the fault at depth in the Earth) for a magnitude 7 earthquake usually lasts between about 10 and 25 seconds. Depending on the depth and distance, this can cause shaking at the surface that could last up to a minute or longer. The further away you are, the more the earthquake waves spread out and last longer but are not as strong. If you are in a deep sedimentary basin, the shaking can be amplified and last even longer, maybe two or three minutes.