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Thread: Thermocline

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  1. #1
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    Default Thermocline

    I started a new thread because this I think deserves some attention. This is what I know. If I run the sensitivity up just nearly all the way I can pick up the thermocline which will be shown as a line across the screen. A forming thermocline shows up as a distinct haze across the screen. My question is do all Mississippi lakes have thermoclines at some point during the summer? What depth ranges have you found thermoclines to be in Ms Lakes? What about river systems like the Tenn-Tom you see them there?

  2. #2
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    All very good questions.
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  3. #3
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    Well, Grenada is not typical of a large lake, I believe. Unlike Enid and Sardis, Grenada is much shallower and dirtier. Plus, the 2 rivers dumping into it combined with the wind keep the water column stirred up more so than the other 2 mentioned. However, it does form, distinctly, deep in the summer after periods of stable weather. Once it forms, it's generally there for the remainder of the summer though unless a really big storm system knocks it out. Usually doesn't.

    As far as depth goes, I've seen it as shallow as 10 and deep as 15 here. Would be surprised to learn that the Tenn Tom or any true river system sets one though, due to the constantly moving water.

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  4. #4
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    It's directly related to water clarity(light penetration), the muddier the water, the shallower the 'cline and vice versa.
    It's all over but the fryin'......

  5. #5
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    So what IS the thermocline...Like The definition...

  6. #6
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    I wanted to ask the same question but didnt wanna show my igganence. Also whats the significance in relation to the fish.
    Stick yo jig in there!

  7. #7
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    ther⋅mo⋅cline
      /ˈθɜrməˌklaɪn/ Show Spelled Pronunciation [thur-muh-klahyn] Show IPA
    –noun
    a layer of water in an ocean or certain lakes, where the temperature gradient is greater than that of the warmer layer above and the colder layer below.

    Crappie hang out in that layer for suited temp and high in oxygen. I pull different depths but I do look at the thermocline and try to stay just above it.

  8. #8
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    Thanks Rip. I "knew" what it was, i just didn't know what it was....Or something like that.

  9. #9
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    OH YEA.......Me too!
    Stick yo jig in there!

  10. #10
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    Default Thermocline

    Thermocline
    a transition layer between deep and surface water
    The thermocline is the transition layer between the mixed layer at the surface and the deep water layer. The definitions of these layers are based on temperature.
    The mixed layer is near the surface where the temperature is roughly that of surface water. In the thermocline, the temperature decreases rapidly from the mixed layer temperature to the much colder deep water temperature.

    The mixed layer and the deep water layer are relatively uniform in temperature, while the thermocline represents the transition zone between the two.
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