The deeper the rupture the less intense it feels on the surface. I think fault rupture sounds better than hypocenter.ĭepth is a big factor, and this is one of the distances from the fault rupture. The epicenter is the surface location above the hypocenter. Intensity is affected by multiple factors, with the biggest being how far away one is from the fault rupture, specifically the hypocenter which is the location on the fault where the rupture occurs. You can have a smaller quake with a higher intensity than a larger magnitude earthquake. The intensity of an earthquake is harder to pin down because so many factors affect how the quake feels, the shaking, damage, and effects. A 7.0 quake is 100 times bigger than the 5, but the amount of energy released is 1000 times greater. These logarithmic scales get more pronounced with more steps. Each 0.1 increase is 1.4 times more energy released.Ī magnitude 6.0 earthquake is 10 times "bigger" than a 5.0, but the amount of energy released is 31.6 (most sites round this up to 32) more. It's another type of big, only going from one step to another (like the 5.0 to 6.0) is not 10 times but 31.6 times larger. Where the Richter Scale was more about size, Moment Magnitude measures how much energy is released. In the 1970s the Moment Magnitude Scale was developed.
#EARTHQUAKE INTENSITY 1 TO 10 FULL#
A full step for example from 5.0 to 6.0) is an increase of 10 times. But this scale becomes less accurate for measuring quakes from further away, and it's not very good for measuring big quakes. Originally this was measured on the Richter Scale which basically measures how big the shaking is.
The magnitude is the size of an earthquake. Here I want to bring some of my earlier posts together to help give more meaning to an image that depicts the magnitude, energy, intensity, and frequency of earthquakes. Not enough to center a career around them, but enough to make some effort to learn about them, their hazards, and what I can do to better prepare my home and family. Since experiencing a 7.9 quake (thankfully from 65 miles away) as a young teenager, I've been fascinated with earthquakes.
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