Search found 34 matches

by Tingpingbing
Sun Aug 23, 2020 5:51 am
Forum: General Geophysics and Geoscience
Topic: diffraction hyperbola
Replies: 4
Views: 671

diffraction hyperbola

Hello, Is anyone here familiar with how to understand a diffraction hyperbola? In the attached figure the first picture is a velocity model and the second picture is a NMO stack and also a corresponding semblance plot. Why does the diffraction apex and the reflection equal to the water layer around ...
by Tingpingbing
Sun Aug 16, 2020 6:02 am
Forum: General Geophysics and Geoscience
Topic: CMP
Replies: 1
Views: 594

CMP

What is a CMP ray family? Is it the same as CMP gather?
by Tingpingbing
Mon Aug 10, 2020 6:03 am
Forum: General Geophysics and Geoscience
Topic: Kinematics in geophysics
Replies: 0
Views: 735

Kinematics in geophysics

What does it mean that "reflections and diffractions have different kinematic properties"?
And "the kinematic part of data sorted in CMP gather can be a normal moveout"?
by Tingpingbing
Tue Jun 30, 2020 5:46 pm
Forum: General Geophysics and Geoscience
Topic: ProMax software
Replies: 2
Views: 921

ProMax software

Hello,
Is there anyone here that is familiar with the software called ProMax?
If so, when you do a trace display, how can I remove the black lines as shown in the figure attached
to this question (The horizontal lines)? These lines make my figures ugly.
Hope you can help :lol:

Thanks!
by Tingpingbing
Wed May 20, 2020 8:40 am
Forum: General Geophysics and Geoscience
Topic: migration of diffractions
Replies: 7
Views: 1245

Re: migration of diffractions

Thank you so much for your help :)
I understand now. I will check up the GPR data processing too.
by Tingpingbing
Wed May 20, 2020 5:12 am
Forum: General Geophysics and Geoscience
Topic: migration of diffractions
Replies: 7
Views: 1245

Re: migration of diffractions

The diffraction looks like this. I do not have a better picture of it since it is an example.
The model is a simple structure with one diffraction. And this diffraction looks like this after migration.
This is a 2D migration.
by Tingpingbing
Tue May 19, 2020 5:40 pm
Forum: General Geophysics and Geoscience
Topic: migration of diffractions
Replies: 7
Views: 1245

migration of diffractions

Hello,
I do not understand it when the diffraction on the migration has two point. Why does the diffraction occur as two point?
It has a positive and negative point.
Where can I read more about this two point diffraction migration?

Thank you in advance for your help! :D
by Tingpingbing
Sun May 17, 2020 7:00 am
Forum: General Geophysics and Geoscience
Topic: Seismic aperture and taper
Replies: 4
Views: 991

Re: Seismic aperture and taper

Thanks to both of you for your help.

Your explanation was so easy to understand, GuyM.
Thank you so much!
by Tingpingbing
Fri May 15, 2020 2:09 pm
Forum: General Geophysics and Geoscience
Topic: Seismic aperture and taper
Replies: 4
Views: 991

Seismic aperture and taper

Hello guys, I hope everyone is doing fine in these hard times! It is something that I do not understand. What are a seismic aperture and a taper? There are a midpoint and an offset aperture, but I do not understand how one can define a seismic aperture? And what is for example a migration taper? Tha...