- #1
AlecYates
- 12
- 0
Hey,
Just doing some reading on this and I'm a little confused as to why absorption produces a progressive lengthening of a seismic pulse.
Quote from the textbook "In general, the effect of absorption is to produce a progressive lengthening of the seismic pulse".
I understand how the pulse changes shape as higher frequencies attenuate more rapidly due to a constant absorption coefficient (which expresses the proportion of energy lost during transmission), though not so much why this effect lengthens the pulse.
So I guess I'm asking why is it that a pulse increases in length as opposed to just changing shape in the vertical? What is it about this effect that lengthens a seismic pulse?
Cheers
Just doing some reading on this and I'm a little confused as to why absorption produces a progressive lengthening of a seismic pulse.
Quote from the textbook "In general, the effect of absorption is to produce a progressive lengthening of the seismic pulse".
I understand how the pulse changes shape as higher frequencies attenuate more rapidly due to a constant absorption coefficient (which expresses the proportion of energy lost during transmission), though not so much why this effect lengthens the pulse.
So I guess I'm asking why is it that a pulse increases in length as opposed to just changing shape in the vertical? What is it about this effect that lengthens a seismic pulse?
Cheers