Travel Scales

To what extent and how fast an earthquake of 7.9 Richter scale travel in a relatively dense? Is there a difference in speed and distance for the continental and oceanic crust? Appreciate a series of numbers and store sources if possible. Thank you!

Do not quote me, but I think that no matter what the reading level, speed is the same regardless of the number scale (from point A to point B). The speed it moves actually depends on the density of materials is traveling through, not the strength of the earthquake was. As sound travels at different speeds in the same materials, no matter how the sound was very early. Wave propagation if I remember my high school earth science correctly.

Dear friend, I am now in a mountain resort. Best if you could go as A. Ganaathy India in Google, you get my best answers. The 7.9 Richter scale will destroy the site until a distance of about 500 K / M from the epicenter. It depends on the location of this speed will be lodged with damaging waves of about 4 k / m second.Learn of my answers about the behavior of different waves.When the secondary wave passes through the sea, it takes a lot of time because it is reflected and refracted several times in the crust.