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What does thermocline look like on graphs? #11024969 08/06/15 07:17 PM
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Chris_K Offline OP
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Can anyone post pictures? Do you not fish below it? Seen this mentioned in another thread and it got me curious.

Moritz Chevrolet - 9101 Camp Bowie W Blvd, Fort Worth, TX - Monte Coon (817) 696-2003
Re: What does thermocline look like on graphs? [Re: Chris_K] #11024982 08/06/15 07:22 PM
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trippbo Offline
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depends on how you have your settings adjusted but here's two i found on google
This first one shows fish sitting right below it...


Last edited by trippbo; 08/06/15 07:24 PM.
Re: What does thermocline look like on graphs? [Re: Chris_K] #11025005 08/06/15 07:30 PM
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Mulholland Offline
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baitfish can't survive under it, so mostly no. Most advise I read says to find structure/cover intersecting around the point of the thermocline as the water right at it will be the coolest, most oxygen rich water available, and any cover/structure will represent holding points for bait/ambush points for bass... I'm far form an expert on it, just passing along info I've observed as I read through these threads and articles on it.

http://www.bassresource.com/fishing/thermocline.html

One such example.

Re: What does thermocline look like on graphs? [Re: Chris_K] #11025009 08/06/15 07:36 PM
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water below the thermocline is oxygen deficient but you can catch fish under it. As Mulholland stated the best is structure right at the cline.

Re: What does thermocline look like on graphs? [Re: Chris_K] #11025021 08/06/15 07:39 PM
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Helix 12 CHIRP MEGA SI+ GPS G3N and G4N, 1198c SI, SOLIX 10 SI G3,
Helix 8 MEGA SI+ GPS G4N, SOLIX 12 SI and G3, MEGA 360, MEGA LIVE TL, RC-1
Re: What does thermocline look like on graphs? [Re: Chris_K] #11025144 08/06/15 08:18 PM
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The sonar picture in 65.8 fow... Why's going on there olmost looks like two bottoms?

Re: What does thermocline look like on graphs? [Re: Chris_K] #11025173 08/06/15 08:33 PM
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Second Sonar Return -

The Second Return is a term that describes the appearance of a second sonar return below the primary sonar return (bottom contour) at exactly twice the true depth. The second return is caused by the some sonar energy bouncing off the bottom once, rebounding to the water surface and then traveling back down to the bottom to be reflected again. Second returns are more common in shallow water and over hard bottoms; it is actually possible to see a third sonar return under some circumstances. The second return provides useful information to help determine bottom hardness, as areas with harder bottoms will generally create a second return. The second return can be used as a guide to set Sensitivity when in shallower water.

http://www.fishing-usa.com/fishfinder-sonar-and-gps-glossary.html

Sonar turned up to detect hard bottom likely, again, everything based on my liited experience and way too much time studying junk on internet hmmm

Last edited by Mulholland; 08/06/15 08:34 PM.
Re: What does thermocline look like on graphs? [Re: Mulholland] #11025308 08/06/15 09:22 PM
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Wayne P. Offline
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Originally Posted By: Mulholland
Second Sonar Return -

The Second Return is a term that describes the appearance of a second sonar return below the primary sonar return (bottom contour) at exactly twice the true depth. The second return is caused by the some sonar energy bouncing off the bottom once, rebounding to the water surface and then traveling back down to the bottom to be reflected again. Second returns are more common in shallow water and over hard bottoms; it is actually possible to see a third sonar return under some circumstances. The second return provides useful information to help determine bottom hardness, as areas with harder bottoms will generally create a second return. The second return can be used as a guide to set Sensitivity when in shallower water.

http://www.fishing-usa.com/fishfinder-sonar-and-gps-glossary.html

Sonar turned up to detect hard bottom likely, again, everything based on my liited experience and way too much time studying junk on internet hmmm


The sonar Sensitivity setting is the Default setting. It is perfect to show fish, thermocline, depth, bottom hardness, plankton, etc.
It wasn't broken so I didn't fix it.


Helix 12 CHIRP MEGA SI+ GPS G3N and G4N, 1198c SI, SOLIX 10 SI G3,
Helix 8 MEGA SI+ GPS G4N, SOLIX 12 SI and G3, MEGA 360, MEGA LIVE TL, RC-1
Re: What does thermocline look like on graphs? [Re: Wayne P.] #11025340 08/06/15 09:33 PM
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Mulholland Offline
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Originally Posted By: Wayne P.
Originally Posted By: Mulholland
Second Sonar Return -

The Second Return is a term that describes the appearance of a second sonar return below the primary sonar return (bottom contour) at exactly twice the true depth. The second return is caused by the some sonar energy bouncing off the bottom once, rebounding to the water surface and then traveling back down to the bottom to be reflected again. Second returns are more common in shallow water and over hard bottoms; it is actually possible to see a third sonar return under some circumstances. The second return provides useful information to help determine bottom hardness, as areas with harder bottoms will generally create a second return. The second return can be used as a guide to set Sensitivity when in shallower water.

http://www.fishing-usa.com/fishfinder-sonar-and-gps-glossary.html

Sonar turned up to detect hard bottom likely, again, everything based on my liited experience and way too much time studying junk on internet hmmm


The sonar Sensitivity setting is the Default setting. It is perfect to show fish, thermocline, depth, bottom hardness, plankton, etc.
It wasn't broken so I didn't fix it.


Didn't mean to imply it had been turned up by the user... both of my units on default show second bottom returns at default sensitivity unless on very soft bottoms or range not set to show deep enough depth for second return (usually the only time it won't be seen), simply meant to say that is what it is and explain that particular phenomenon/occurrence.

Great graphs btw, thanks for sharing!

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