Posted 2/20/2008 10:29 AM (#66146 - in reply to #66145) Subject: Re: Solve the Underwater Mystery, WIN an Aqua Vu Underwater Camera
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Posts: 86
I am sorry for the confusion. The bump is a type of structure that has many names. Tha answer is a natural type of structure on a MN Lake. The attached screen capture is the West end of Sloppy Joes since that was one guess. Sloppy Joes is the most famous gravel bar in Mille Lacs Lake.
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Posted 2/20/2008 4:54 PM (#66166 - in reply to #66161) Subject: Re: Solve the Underwater Mystery, WIN an Aqua Vu Underwater Camera
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Posts: 1991
Cool I guessed Sloppy Joes
No I take that back, after studying the picture I broke out my maps and I noticed that it resembled Sloppy Joes on Mille Lacs, I recognized that rock that I get snaged up on all the time
Posted 2/21/2008 9:13 AM (#66185 - in reply to #66082) Subject: RE: Solve the Underwater Mystery, WIN an Aqua Vu Underwater Camera
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Posts: 701
Location: upper michigan
it looks like a large rock or rock pile. with a transition from smaller rock to mud on both sides
Brett King
Posted 2/21/2008 9:41 AM (#66186 - in reply to #66082) Subject: RE: Solve the Underwater Mystery, WIN an Aqua Vu Underwater Camera
Looks to me to part of the Boot mud falt on Mille Lacs lake maybe the hump of the SW end of it? My only issue with this guess knowing Doc is that would mean he is miles from the closet rocks to throw an anchor on!!!!!!
Posted 2/21/2008 3:35 PM (#66209 - in reply to #66082) Subject: RE: Solve the Underwater Mystery, WIN an Aqua Vu Underwater Camera
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Posts: 1406
WOW we've had guesses from Mud, sand bar to rock reefs to metal, amazing all these guesses and the structure is very defined, I'm no Lowrance genius matter of fact never owned one, is it fiberglass?
Posted 2/22/2008 8:33 AM (#66234 - in reply to #66209) Subject: RE: Solve the Underwater Mystery, WIN an Aqua Vu Underwater Camera
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Posts: 86
Jerry is the winner as he gave the first correct answer. Zach can now show you the underwater video of a mud flat on Mille Lacs Lake, MN where I did the sonar recording. I am leaving town for a few days and when I get back I will explain why there were many answers and why they all could be correct. Sonar is just sonar. It was just supposed to be a guess the sonar but I think a teaching session on bottom content is a good idea as we all struggle with looking at the sonar and wonder what is this bottom made of? I have many recorded charts of the bottom that I have studied with my Aqua-Vu so I could understand what the sonar is “seeing”. For Jayman the unit was set North up, I forgot to answer that question.
Posted 2/22/2008 3:14 PM (#66273 - in reply to #66262) Subject: Re: Solve the Underwater Mystery, WIN an Aqua Vu Underwater Camera
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Posts: 3899
Well, it certainly is a different type of mud than what we have on Bago, for sure.I was going to say it's a rock pile, or reef, with the boat now over a softer bottom, perhaps a mud flat. As far as being, famous, I wouldn't have a clue. The sonar definately shows harder bottom on the shallower portion, that which rises to about 28 feet. Then when it drops down to 34', it is definately a softer bottom. I'd call this a transition from hard to soft, and would not categorize the image as a mud flat. Even in the video, it appears like rock reefs that the camera is banging into.
Sloppy web.jpg (51KB - 112 downloads)
