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Discussion Topic: Saline barrier _ trend or coincidence
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Bluebell |
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At the tail part of last season the boats waiting to come in and those ready to go out had the barrier lowered so they could move in and out…
With kind regards
Jim
was Bluebell now Chiltern Lady (an Aquafibre Opal built by Fineway Cruisers Hoveton)
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Harrietbrandon |
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Thank you. Just curious how it would work.
HB
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MandA |
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I quite agree with Jim (Bluebell),I can’t understand how it works when the water creeps around the end of the barrier and is always the same level as the river .
We’ve moored at Herbert Woods for 15 plus years so are used to the situation I expect the office must point out the situation to new Moorers.
Adrian.
MandA
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Bluebell |
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Just had an email from EA. The barrier will be lowered at 10.30 today to allow passage of boats in and out. You’ll have to be quick though, it’ll be raised again as soon the movements are complete. The EA are hoping to lower on Monday, but can’t be sure as their predictions are only for the next 36 hours…
My question is, if the barrier is lowered, even for a shortish time, won’t the salty water rush into the basin ?
With kind regards
Jim
was Bluebell now Chiltern Lady (an Aquafibre Opal built by Fineway Cruisers Hoveton)
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Marshman |
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Some will but as the basin is already full of water, not much!!
To satisfy those questioning it, perhaps they need to go out and check the salinity of the water either side of the barrier and at the same time check to see if it has any fish in it!!
At least they are trying to limit the impact of saline surges to avoid the death of many fish - even a modest degree of success is better than nothing!!!
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annville |
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Hi As salt water floats on top of fresh water you only need the barrier at the top allowing fresh to flow in and out as tide rises and falls, a barrier at Yarmouth would make this one redundant. John
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Marshman |
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Mardles sometimes
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And there was me thinking that the more dense water (salt) was heavier and as a result the freshwater was on the top!!
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Steve51 |
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Mardles sometimes
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John, I think you'll find it's the other way round. Fresh water being less dense and lighter, floats on top of salt water.
Steve. CM1 and NR12
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annville |
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Thanks for that Steve. John
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K123Vette |
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EA fisheries chap doing barrier last week mentioned that salt water is denser than fresh so will stay lower in the flow so lowering the barrier just a little should not increase salt in the basin. The current barrier is near the end of its serviceable life and does indeed let water flow round the sides. The EA are surveying the site and looking at options of the future. The saline barrier raised has also partially prevented some of the yard sheds and car park from flooding during the recent high waters.
K123Vette
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Feb-04-2022 @ 5:05 PM
