File:Encroutement pile pont Authie amont barrage B2 09 aout 2017 D.jpg

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Français : Phénomène de biominéralisation (Encroutements sur pile de pont, phénomène très fréquent là où il y a des turbulences et éclaboussures) ici sur Authie sous le pont qui précède le barrage B2 le 09 aout 2017 à faible profondeur (par rapport au "niveau d'étiage" estival). .Localement le fond est colmaté (alors non propice à la ponte des salmonidés et de plusieurs autres espèces). Quelques éponges sont visibles à proximité.
English: Phenomenon of biomineralization (Encapsulation on bridge pile, very frequent phenomenon where there are turbulences and splashes) here on Authie under the bridge that precedes dam B2 on 09 August 2017 at shallow depth (in relation to the low water level "Summer").. Locally the bottom is clogged (then not suitable for spawning salmonids and several other species). Some sponges are visible nearby.
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Author Lamiot

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current08:41, 19 August 2017Thumbnail for version as of 08:41, 19 August 20176,000 × 4,000 (14.87 MB)Lamiot (talk | contribs)User created page with UploadWizard

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