Mike Raiford wrote:
> Could it be some artifact in the way they're getting the topology of the 
> ocean floor?

Yes. The boat is going along the tracks, and the sonar forms artifacts when 
it's also reflecting off the boat. Stuff like that. I read about it 
somewhere when someone else brought it up, and the boat captain chimed in.

-- 
   Darren New, San Diego CA, USA (PST)
   I ordered stamps from Zazzle that read "Place Stamp Here".

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