There are a couple things related to this that I've been wondering about. First, how can we tell whether the rocks were moving in different directions at the same instant in time since we don't know if they all came to rest at the same time? Some might have started out earlier than others and maybe some stopped later, (and maybe they moved at different rates?) so measuring back from their current positions doesn't necessarily tell how they were all moving at any instant.
The other thing is the idea that the wind moves as a uniform mass across the lake bed in one direction. I don't know anything about this particular environment but wind direction doesn't normally follow a laminar flow pattern and can show a lot of local variability on the small scale as well as regionally. Saw an interesting show a while back about how a military sniper has a spotter who determines the wind directions along the path between the rifleman and the target in order to adjust the aim. In that case there were two or three different wind directions near the ground over a path of a mile.
Clay
__._,_.___
No comments:
Post a Comment