SEG-D standard https://seg.org/Portals/0/SEG/News%20an ... rev2.1.pdf (page 8) states that "Receiver positions are defined by a Receiver Line Number (three integer bytes and two fraction bytes), a Receiver Point Number (three bytes integer and two bytes fraction), and a Receiver Point Index (one byte). This index allows for defining the receiver group in the grid, the original value is 1 and that value is incremented by 1 every time the receiver is moved, even when it is moved back to the previous location". Similar statements are found for source position as well.
To me, a receiver position on surface is adequately defined by a line number and a point number. So what is a Receiver Point Index? How does it matter in positioning a receiver? Am I missing some concepts in seismic acquisition design?
Also, it seems there is no corresponding definition in SEG-Y.
Receiver location in SEGD
-
- Silver Member
- Posts: 31
- Joined: Fri Nov 24, 2017 4:36 am
Re: Receiver location in SEGD
If you only worked in the desert and the geophones were planted across a claypan and never disturbed, it may seem odd. But in transition zone survey, cables may be sloshed around by surf, so the receiver point index is used to indicate that the receiver is not in the same place it was yesterday. SPS files also allow for "receiver point index".
Re: Receiver location in SEGD
Thanks for the explanations, Michael_Seman. It makes sense now.
-
- Member
- Posts: 1
- Joined: Wed Mar 31, 2021 5:27 am
Re: Receiver location in SEGD
Do you guys have a link to more info. I'd like this a little bit elaborated.
-
- Similar Topics
- Replies
- Views
- Last post
-
- 0 Replies
- 1115 Views
-
Last post by mko
-
- 1 Replies
- 1248 Views
-
Last post by GuyM
-
- 0 Replies
- 6128 Views
-
Last post by Michael_Seman
-
- 0 Replies
- 1288 Views
-
Last post by resour
-
- 1 Replies
- 1191 Views
-
Last post by GuyM