Hi,

1) sureduce assumes that the offset is in meters and the reduction velocity in km/s. (or anything else with a ratio of 1000). Are the offsets in meters ? The geometry of this collection looks very strange (>100 km offset), with a recording of only 8s.
2) How can your data exhibit varying offsets with constant source and receiver locations ?

Check the geometry of your traces and try again.

D.


Le 27/10/2022 à 19:25, eloraafrin5@gmail.com a écrit :
Hello greetings! I am a beginner. I have a big su file with huge shot points, but I want to see a particular shot point in reduced velocity mode. I made a single file for those particular shot by using key=fldr. Now this file should have total 636 traces. I wrote a command suwind < indut su file key=tracl max=636 .......
However, in image I got values from2.84*10^5 to 2.85*10^5. Even when I want to see the image in reduced velocity mode, I need to set rv= >1000 whereas it should be  rv=1 to 2. It seems like there are something wrong with units in the headers. Would anyone please help me with how can I fix these??? I am a new user; I will appreciate your help and time. Here I attached the header info. Thanks
FYI
636 traces:
tracl  1 636 (1-636)
tracr  284929 285564 (284929-285564)
fldr    2245
tracf  1 636 (1-636)
cdp   2245
offset 112464 120401 (112464-120401)
sx       376962
sy       5176643
gx       376962
gy       5176643
ns       2001
dt       4000
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|Dominique Rousset           LFCR UMR5150 / E2S UPPA / Dpt des géosciences| 
|Univ. Pau et des Pays de l'Adour BP 1155       F-64013 Pau Cedex - France|
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