Having assembled as they were in yesterday's photo, our vibs were now facing a wall of sand.
My guess is they'd shoot up to just before the circle of geophones and them drive around to the other side to carry on shooting. In a prior life I would have been tasked with working our compensating shots to make up for the missed locations but on this crew, that was the task of others.
The circle of geophones was also used where the height variation across the regular linear pattern was great. The only thing we knew with great accuracy was the location of the pegs denoting the stations. Here, in this loose sand, any significant variation in height along the geophone or shooting pattern would severely compromise the results.
You can see here a small sand avalanche near the top of the dune line. Note also how the sand gets softer towards the top of the slip face on this dune – the footprints left by the front crew laying the geophones are quite visible on the lower part of the slope but largely blended in and invisible nearer the top.
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