how to find the frequency of an earthquake?

Question

i know the ritcher magnitude and the seismic waves is a simple forced harmonic motion. i am not able to calculate the frequency of the wave to further proceed with my project. pls help

Answer 1

if you have a record of the magnitude, then sample it in high frequency (more than 2 times you estimate the higher frequency might be) and the run FFT (fast Fourier transform) on the sampled points, this will give you the frequencies constructing the sampled points.

Answer 2

i'd be very stunned if anybody had a correct answer to this question. attempting to make certain the dates of prehistoric earthquakes is amazingly puzzling. oftentimes geophysicists dig trenches in sedimentary deposits that are decrease by using faults and take a inspect to piece mutually data of previous quakes. that is puzzling and obscure artwork, and relies upon upon extra advantageous than only slightly success to get precise dates, because of the fact it demands looking bits of charcoal interior the deposit that could be carbon-dated. additionally, until you have some impressive sedimentary deposit on the fault you probable won't have the skill to piece something mutually in any respect. Reconstructing quake histories a quantity thousand years previous is rather dicey.

Answer 3

Earthquakes consist of two waves, a p-wave and an s-wave. The frequencies of both must be determined empirically from seismographs, as they will vary due to local conditions of rock and soil.

Answer 4

EARTH QUAKE IS COMBINATION OF HARMONICS . THERE WILL BE A FREQUENCY SPECTRUM , NOT A SINGLE ONE.
WOULD YOU EXPLAIN FURTHER ABOUT YOUR OBJECTIVE .