meaning of seismic thresholding and lateral velocity variations?

Anything about geophysics and geoscience: jobs, events, technical or general discussions ...
Post Reply
saboluface
Member
Member
Posts: 3
Joined: Sat May 02, 2020 11:40 am

meaning of seismic thresholding and lateral velocity variations?

Post by saboluface »

Hello,
In this corona times, I do really not understand my lectures at all.
It is so hard to work at home!
Can someone help me with what seismic thresholding is?
I do not understand what coherency threshold or threshold means?
And also how one can define lateral velocity variations?


I hope you can help me :)

User avatar
geophix
VIP Member
VIP Member
Posts: 924
Joined: Fri Jul 24, 2009 9:26 am
Top poster of the Month

Re: meaning of seismic thresholding and lateral velocity variations?

Post by geophix »

Hi,saboluface, I am not a seismic expert here, but I am willing to give a guess. I guess coherency threshold must relate to minimal signal strength, only when the signal strength is above the threshold can you actually notice (or separate) them from noises. If you know the value of coherency threshold, then you can use it the reduce/suppress noises. I guess the actual seismic threshold algorithm must be more complicated than simply assigning a value.

As for lateral velocity variations, I guess basically it means it's not a horizontally layered model; or we can say it's not a 1D model, but a 2D or 3D model with velocity variations along horizontal directions, not just the vertical direction.

saboluface
Member
Member
Posts: 3
Joined: Sat May 02, 2020 11:40 am

Re: meaning of seismic thresholding and lateral velocity variations?

Post by saboluface »

Thank you so much for the explanation, geophix :) Now I understand!

Post Reply
  • Similar Topics
    Replies
    Views
    Last post