Author Topic: Bottom Hardness Question  (Read 1318 times)

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Offline d.sonnenburg

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Bottom Hardness Question
« on: March 01, 2016, 07:33:21 PM »
What would be the harder bottom on the scale, 5 (blue colors to the left on scale) 33 (red colors to the right)?
Also what does the gain adjust?


Offline rnvinc

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Re: Bottom Hardness Question
« Reply #1 on: March 02, 2016, 12:15:29 AM »
You might also post your question here while waiting for someone with AutoChart experience ...

http://autochart.forumotion.com/

Rickie

Offline CamoHunter

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Re: Bottom Hardness Question
« Reply #2 on: March 04, 2016, 07:49:50 AM »
What would be the harder bottom on the scale, 5 (blue colors to the left on scale) 33 (red colors to the right)?
Also what does the gain adjust?
In your bottom hardness map, I would presume the blue areas are soft bottom, the green areas harder bottom, and the yellow areas harder yet, and the red areas very hard.  Just saying that because of the progression of color, and how it relates to the deep bottom area, and all the harder bottom areas are associated with points, shore, and looks like a big rock hump in the middle.
« Last Edit: March 04, 2016, 08:25:31 AM by CamoHunter »

Offline rnvinc

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Re: Bottom Hardness Question
« Reply #3 on: March 04, 2016, 08:10:15 AM »
Thanks for poppin in camo ...

It really helps these guys with the mapping questions that I don't have experience with ...

Rickie

Offline 35wailin

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Re: Bottom Hardness Question
« Reply #4 on: June 22, 2017, 07:47:23 AM »
I agree with Camo, based on recent mapping I did on a known bottom hardness area, the zero end of the scale is soft and the higher( right side) is harder.

I have no idea regarding Gain, as I am just starting to learn this as of a month ago.

Offline Oilpig

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Re: Bottom Hardness Question
« Reply #5 on: July 21, 2017, 04:38:30 PM »
The red bit down the middle is likely not a rocky hump.  If you compare it to a depth map I'd be willing to be it's the creek/river channels.  Despite lakes being full way above the channel banks, current still moves within the old channel (generally due to differences in density of the water column).  Because of this you may be seeing the hardness increase in the channel because the muddier (softer) bits are sorted out by moving water leaving the denser material behind.  Storms on the lake will mix material up the water column as well, again with denser/harder bits settling into areas where currents keep the smaller stuff moving around until it finds a calm spot.

Great image by the way!
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