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Rising water temps

Rhys Perry said:
With the impending rise in air temperature set for this weekend it looks like it might be worth a shout for the barbel. However, when would be the best time?QUOTE]

Well, this weekend looks better than last - bit warmer. Presuming you can get near to your river i would aim to get there just as the river level is peaking after todays rain. By timing your session that way you can be sure the river has the maximum amount of warm stuff mixed in so the temperature should be favourable. Also, on most rivers i've fished the amount of rubbish coming down drops considerably as the levels start to drop, the added bonus being they've already had a bit of a flush last week. So that's 3 and 4 sorted off John's list. Stick a lump of garlic spam out - that's 5 ticked! Pick a swim you know holds barbel in a flood - that's 1 sorted. Moon charts would give you the minor and major activity/feeding times, adding to the confidence of some, but assuming you don't have them with conditions being as favourable as they are just be confident that they will feed at some point during your session.

Let's face it - your options are:-

(1) Christmas Shopping
(2) Decorating
(3) Arguing about physics on the internet
(4) Barbel fishing
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Andrew Boyne said:
Rhys Perry said:
With the impending rise in air temperature set for this weekend it looks like it might be worth a shout for the barbel. However, when would be the best time?QUOTE]

Well, this weekend looks better than last - bit warmer. Presuming you can get near to your river i would aim to get there just as the river level is peaking after todays rain. By timing your session that way you can be sure the river has the maximum amount of warm stuff mixed in so the temperature should be favourable. Also, on most rivers i've fished the amount of rubbish coming down drops considerably as the levels start to drop, the added bonus being they've already had a bit of a flush last week. So that's 3 and 4 sorted off John's list. Stick a lump of garlic spam out - that's 5 ticked! Pick a swim you know holds barbel in a flood - that's 1 sorted. Moon charts would give you the minor and major activity/feeding times, adding to the confidence of some, but assuming you don't have them with conditions being as favourable as they are just be confident that they will feed at some point during your session.

Let's face it - your options are:-

(1) Christmas Shopping(2) Decorating
(3) Arguing about physics on the internet
(4) Barbel fishing
Click to expand...

Speaking of which, whens the last day for chrimbo shopping, i,ll have to make a start soon ;)
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was out yesterday on our local river 2.30pm till 9.00pm river was up about 6 foot and ran of quickly through session about 15 inch
took the temp when started 5.4c i caught a barbel at 5.45pm checked the temp 5.1c at the end of the session 5.3c
mark who was with me never had a touch and another guy on had 2 chub
just an insight on temps going up and down on a northern spate river. moon time 19.20 till 21.20 lost one between these times
gaz
 
Andrew Boyne said:
Rhys Perry said:
With the impending rise in air temperature set for this weekend it looks like it might be worth a shout for the barbel. However, when would be the best time?QUOTE]

Well, this weekend looks better than last - bit warmer. Presuming you can get near to your river i would aim to get there just as the river level is peaking after todays rain. By timing your session that way you can be sure the river has the maximum amount of warm stuff mixed in so the temperature should be favourable. Also, on most rivers i've fished the amount of rubbish coming down drops considerably as the levels start to drop, the added bonus being they've already had a bit of a flush last week. So that's 3 and 4 sorted off John's list. Stick a lump of garlic spam out - that's 5 ticked! Pick a swim you know holds barbel in a flood - that's 1 sorted. Moon charts would give you the minor and major activity/feeding times, adding to the confidence of some, but assuming you don't have them with conditions being as favourable as they are just be confident that they will feed at some point during your session.

Let's face it - your options are:-

(1) Christmas Shopping
(2) Decorating
(3) Arguing about physics on the internet
(4) Barbel fishing
Click to expand...

(5) Nursing a hangover (today)
(6) Drinking again (tomorrow)

Looks like I won't be catching barbel this side of Christmas!
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Sam Lloyd said:
Jim, you calculations are almost right. In short what would happen now, if you recalculated for 2 metres or 3 metres, is the effect of atmospheric pressure would decrease as a percentage of the total pressure. The change in pressure would be the same at all depth though.

the formula you need to use is actually (1-total/atm)*100 for the percentage due to pressure. And to compare two days (1-total day1/total day2)*100, (total being for whatever depth you're interested in.
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Sam, STOP SHOWING OFF.:D
 
Jim, you calculations are almost right. In short what would happen now, if you recalculated for 2 metres or 3 metres, is the effect of atmospheric pressure would decrease as a percentage of the total pressure. Agreed. The change in pressure would be the same at all depth though. If you mean that the pressure of each additional 1m of water is additive, then agreed the formula you need to use is actually (1-total/atm)*100 for the percentage due to pressure. And to compare two days (1-total day1/total day2)*100, (total being for whatever depth you're interested in. Have to think about this calculation

Sam, you are letting yourself down. We should be able to have a constructive discussion without trading insults. If we are going to rubbish each other, then I would have pointed out at an earlier junction in one of your posts, that meter and metre are not interchangeable. I think that Dave has been civilised to say the least in these discussions and he has come in for a fair bit of unwarranted stick.

I just don't understand why you insist that liquids are compressible. If you have worked in this field, you know perfectly well that to all intents and purposes, and for our discussion needs, that liquids are not compressible.

You also took out of context or misconstrued my comment stating that I did not see why a relatively small change in atmospheric pressure would have much bearing on the pressure felt by a fish. My mistake was not to appreciate how small the water pressure is (100mb) at 1m, compared to atmospheric pressure (1000mb.) Hence an atmospheric pressure change of 50mb would be equivalent to that of 0.5m of water.
 
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Jim, read through my comments and I've never said compressibility had any significant effect on the depth we are talking about. I just thought people might like a bit of a "QI" style fact that's all... Hence the smiley following my first comment.... I never intended for it to blow up as it has...
Oh and my formulas you've just quote are slightly wrong (see I do admit when I'm wrong ;)). I should of put the following;

The formula you need to use is actually ((total/atm)-1)*100 for the percentage due to pressure. And to compare two days ((total day1/total day2)-1)*100, (total being for whatever depth you're interested in).

I didn't intend to "rubbish" anyone, just correct.

I'm not going to post again on this thread... Feel free to PM me... I was tempted to post on the carbon fibre technology thread but I fear a repeat of this one :D
 
Sam Lloyd said:
Jim, read through my comments and I've never said compressibility had any significant effect on the depth we are talking about. I just thought people might like a bit of a "QI" style fact that's all... Hence the smiley following my first comment.... I never intended for it to blow up as it has...
Oh and my formulas you've just quote are slightly wrong (see I do admit when I'm wrong ;)). I should of put the following;

The formula you need to use is actually ((total/atm)-1)*100 for the percentage due to pressure. And to compare two days ((total day1/total day2)-1)*100, (total being for whatever depth you're interested in).

I didn't intend to "rubbish" anyone, just correct.

I'm not going to post again on this thread... Feel free to PM me... I was tempted to post on the carbon fibre technology thread but I fear a repeat of this one :D
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That's fine, Sam. Nothing wrong with a good debate unless it becomes personal. The post has been interesting and some good information has emerged. Strangely enough, I felt exactly the same as you about the carbon fibre post. My contribution on that topic would have been hearsay as opposed to concrete facts. Hence my reticence to post!
 
Sam Lloyd said:
Jim, read through my comments and I've never said compressibility had any significant effect on the depth we are talking about. I just thought people might like a bit of a "QI" style fact that's all... Hence the smiley following my first comment.... I never intended for it to blow up as it has...
Oh and my formulas you've just quote are slightly wrong (see I do admit when I'm wrong ;)). I should of put the following;

The formula you need to use is actually ((total/atm)-1)*100 for the percentage due to pressure. And to compare two days ((total day1/total day2)-1)*100, (total being for whatever depth you're interested in).

I didn't intend to "rubbish" anyone, just correct.

I'm not going to post again on this thread... Feel free to PM me... I was tempted to post on the carbon fibre technology thread but I fear a repeat of this one :D
Click to expand...

Sam,

Don't take it too hard.....some of them on here are not too keen on facts and reality.........I bet they cant wait for tonights episode of "Merlin".
 
Richard Hamlyn said:
Sam,

Don't take it too hard.....some of them on here are not too keen on facts and reality.........I bet they cant wait for tonights episode of "Merlin".
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Well said, Richard. A man to smooth over troubled waters certainly not one to post any inflammatory comment. If only there were more straightforward, people of principle like you on here.
 
Thought the last episode of Merlin is on Christmas Day..No?

Actually the wife liked the series, and I must admit it's not that shabby, shame BBC are axing it.

Anyway apart from rising temperatures the Severn is RISING!!!!:eek: and at 4pm this very day it was a mere 700mm or 70 cm or if you prefer or for those of an older disposition 27.55949 inches lower than the mighty flood of 2007.

I am thinking of setting up a light feeder rig for the lounge :(
 
So is the rivers about to get another stocking of pasties from BAA's Uckinghall pool ? It's very good of them :D

Bet they're ****ed about the Zeds now in there :eek:

Lets hope they put cats in next time. It'll be a refreshing change to see Matt Hayes fishing for something else other than Zander down on the lower, and new subject matter for his vids :rolleyes:
 
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Neil Smart said:
Thought the last episode of Merlin is on Christmas Day..No?

Actually the wife liked the series, and I must admit it's not that shabby, shame BBC are axing it.

Anyway apart from rising temperatures the Severn is RISING!!!!:eek: and at 4pm this very day it was a mere 700mm or 70 cm or if you prefer or for those of an older disposition 27.55949 inches lower than the mighty flood of 2007.

I am thinking of setting up a light feeder rig for the lounge :(
Click to expand...

27.55949 :eek: is that like....a gnats willy short of 27 9/16" Neil

:D

Cheers, Dave.
 
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