Yes, it is crucial to take great care in designing the filters and mute functions, especially if the near and far offsets are being used for AVO analysis, where the low frequency noise is more prevalent, especially from head waves and shallow refractors. https://agilescientific.com/blog/2011/9/14/g-is-for-gather.html And for those wishing to delve into these problems more deeply: https://www.academia.edu/70804834/Noise_in_Marine_Seismic_Data In this shot gather you can see the direct water wave arrivals in the near offsets and the head wave arrivals in the far offsets... There are all sorts of approaches to filtering these noise sources, including f-k, tau-p, and radon transforms, to mention the most common, but that starts getting pretty technical, so I'll leave it at that.
PCL Price at posting:
0.7¢ Sentiment: Buy Disclosure: Held
A personalised tool to help users track selected stocks. Delivering real-time notifications on price updates, announcements, and performance stats on each to help make informed investment decisions.
(20min delay)