3.What two types of waves are used to determine the epicenter of earthquakes? @eric_d
I think it's seismic waves
this is math forum buddy :) FYI
but isn't it two types of waves
I'm not sure with this ! Maybe you can tag others
Any idea @vishweshshrimali5
Earthquakes produce two waves, the primary (p) and secondary (s) waves. The have different vibration directions and different speeds. For precision both waves are used and triangulated by using 2 or more seismographic receiving stations (Often people say you need 3 stations but this is a mistake, The third point of the triangulation is the epicenter. More stations add precision.) Because the speed of the waves are different you can get an estimate off how far away the epicenter is by timing the separation of the p and s waves but it is not too accurate since both waves are affected by the medium through which the wave is transmitted. But by using all the information available, triangulation, wave separation, strength where the wave is detected the epicenter and magnitude of the earthquake can be accurately determined.
So its primary and secondary?
yup
that's what it is saying :) :P
thx everyone :)
Np @geny55
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