Why seismic velocity is useful Flashcards
1
Q
How are they useful?
A
They are useful indicators of subsurface velocity
2
Q
Why are they useful?
A
Because geological media has different densities and elastic properties. The “moduli” express the elastic response of an earth material to small stresses controlled by rigidty
3
Q
What is an example?
A
Sandstone is not so rigid with smaller values of its elastic moduli, and will therefore deform easily to stress
4
Q
What is another example?
A
Crystalline rocks are rigid with large values of elastic moduli and will deform or strain much less in response to the same stress
5
Q
What increases in earth material>
A
Seismic velocities of an earth material increase with rigidity and decrease with material’s density
