This year is Paris under water, water, water ...
But no, go back to sleep, there is STRICTLY no climatic problem !! Consume, be happy, it'll be fine!
Edit: here is the comparative rainfall 1910 / 2018, it's the same level! See 2 page for details: changement-climatique-co2/les-inondations-de-2018-sont-aussi-graves-que-celles-de-1910-en-terme-de-precipitations-t15530-10.html
We are therefore in 2018 at the flood centennale ... remains to see what was the level of precipitation in 2016 ... because 2 hundred year old in 2 years, bin uh it's not possible! (Yes Yes!)
The floods of 2018 are as severe as those of 1910 (in terms of rainfall)!
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Re: Paris in the snow, snow, snow ...
and what was 1910's flood? much worse than the current flood, both in Paris and Besançon
it was also in January and also because of warming that melts the snow accumulated with a lot of rain
so the climate does what he wants and there is nothing to conclude
it does not prevent the reduction of greenhouse gas emissions remains useful ... but do not be ridiculed by concluding anything for a flood no worse than any other
I would rather want to criticize the bad development of rivers ... we should dredge deeper and wider ... it would facilitate the flow when we open all the dam ... and better use hydraulic power in normal times
a river in its normal state has just the slope it takes to flow the normal flow ... so raw when the flow is too strong
a wide and deep dredged river needs less slope to flow the normal flow so we can put a damper to produce energy and when we fully open the dam it can run a higher flow than the river could flow in its normal state
this kind of great work would therefore have a dual purpose to produce energy and reduce floods
to protect certain areas by dikes is a bad solution: it is better to promote the flow
it was also in January and also because of warming that melts the snow accumulated with a lot of rain
so the climate does what he wants and there is nothing to conclude
it does not prevent the reduction of greenhouse gas emissions remains useful ... but do not be ridiculed by concluding anything for a flood no worse than any other
I would rather want to criticize the bad development of rivers ... we should dredge deeper and wider ... it would facilitate the flow when we open all the dam ... and better use hydraulic power in normal times
a river in its normal state has just the slope it takes to flow the normal flow ... so raw when the flow is too strong
a wide and deep dredged river needs less slope to flow the normal flow so we can put a damper to produce energy and when we fully open the dam it can run a higher flow than the river could flow in its normal state
this kind of great work would therefore have a dual purpose to produce energy and reduce floods
to protect certain areas by dikes is a bad solution: it is better to promote the flow
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Re: Paris in the snow, snow, snow ...
chatelot16 wrote:and what was 1910's flood? much worse than the current flood, both in Paris and Besançon
Not at all that the flood was worse in 1910 2018 as France has worked well during a decade of major work to protect the maximum Paris (with logic given the costs that would engender) ... It should compare the records Rainfall over the whole of France and by regions over the periods concerned!
And even: 1910 was a centennial flood, but 2010 has passed, so logically we are in the strong probability of a new centennial flood as important as that of 1910 and this without any link with climate change!
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Re: Paris in the snow, snow, snow ...
There is the artificial lake Der-Chantecoq 48 km ², became a nature reserve and a tourist attraction not far from my home https://fr.wikipedia.org/wiki/Lac_du_Der-ChantecoqChristophe wrote:chatelot16 wrote:and what was 1910's flood? much worse than the current flood, both in Paris and Besançon
Not at all that the flood was worse in 1910 2018 as France has worked well during a decade of major work to protect the maximum Paris (with logic given the costs that would engender) ... It should compare the records Rainfall over the whole of France and by regions over the periods concerned!
This is not the only protection work
https://www.lci.fr/societe/crues-vigicr ... 76746.html
Though, see below
A project of a fifth tank is debating. The Bassée lake, located in the Bassée valley, in Seine-et-Marne, is under study since 2001. To build it at the level of the Seine-Yonne confluence, remind Les Echos, it would erect 7,8 kilometers of dikes and spend about 100 million euros.
What allow, according to the daily, a "subsidence of the water line of 5 cm less in Paris". But environmental associations dispute the usefulness of the project and assert that the 2016 flood took place "much further downstream, by the overflow of small tributaries, the Loing, the Yerres, the Barley. The basins of the Bassée n 'would not have prevented anything ".
But even with this fifth lake, a flood equivalent to that of 1910 could not be contained. This would require being able to retain 7 billion cubic meters of water...
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Re: Paris in the snow, snow, snow ...
Not contained agreement but inevitably more limited than if these tanks did not exist!
The question is, in what exact proportion ...
The question is, in what exact proportion ...
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Re: Paris in the snow, snow, snow ...
It all depends on whether they have managed to empty the basins before the big rainy episode. This is the goal, to anticipate the rainy phenomena. The total capacity of 4 lakes is 800 million cubic meters, with a flood of 7 billion cubic meters as in 1910, it is still insufficient.
It was in the link I gave above
It was in the link I gave above
according to Sébastien Brana, administrator of the site infoclimat.fr, the filling rate of the four lakes had reached 80%, for a total capacity of more than 800 million cubic meters. These reduce the flow rate of 520 cubic meters of water per second.
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Re: Paris in the snow, snow, snow ...
izentrop wrote:It all depends on whether they have managed to empty the basins before the big rainy episode.
Uh, is that a joke?
We can put on the table the accuracy of the weather forecast also: nonexistent in 1910 ... quite accurate 1 week in 2018! So we have a much greater anticipation capacity!
Ok 800 million to contain 7 billions it's a bit fair ... it remains a factor of 10 ... but the basins are not the only arrangements that have been made ...
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Re: Paris in the snow, snow, snow ...
izentrop wrote:It was in the link I gave above
The link is HS ...
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Re: Paris in the snow, snow, snow ...
Good article Well encrypted as I like, thank you!
It remains to find the comparative precipitation 1910 / 2018 ...
It remains to find the comparative precipitation 1910 / 2018 ...
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