File:Mousse Basse-Deûle après écluse du Grand-Carré, samedi 14avril nuit 2018a53.jpg
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![File:Mousse Basse-Deûle après écluse du Grand-Carré, samedi 14avril nuit 2018a53.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Mousse_Basse-De%C3%BBle_apr%C3%A8s_%C3%A9cluse_du_Grand-Carr%C3%A9%2C_samedi_14avril_nuit_2018a53.jpg/800px-Mousse_Basse-De%C3%BBle_apr%C3%A8s_%C3%A9cluse_du_Grand-Carr%C3%A9%2C_samedi_14avril_nuit_2018a53.jpg?20180416201737)
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[edit]DescriptionMousse Basse-Deûle après écluse du Grand-Carré, samedi 14avril nuit 2018a53.jpg |
Français : fin d'une accumulation nocturne de mousse sur la Basse-Deûle. Ce matin là sur la moyenne-Deûle (canal de l'esplanade) à sa confluence avec la Basse-Deûle certaines bulles étaient exceptionnellement grosses et persistantes (20-25 cm de diamètre). La veille et les jours précédents la Deûle était également en partie couverte de mousse (une fois sur plusieurs centaines de mètres après l’écluse du Grand-Carré). Cette mousse est un indice de pollution organique et/ou chimique, pouvant évoquer la présence d'un détergent ou produit similaire (amonium quaternaire..). Le phénomène se produit épisodiquement, parfois accompagné d'une odeur particulière.
Dans les années 1960, il était beaucoup plus fréquent, et les couches de mousses pouvaient dépasser 1 voire 2 m d'épaisseur. A cette époque, il n'y avait pas de station d'épuration dans cette zone.
English: Foam accumulation at the confluence of the Mean-Deûle (or Esplanade canal) of Lille Basse-Deûle.
In the 1960s, it was much more common, and the layers of mosses could exceed 1 or even 2 m thick. At that time, there was no treatment plant in this area. |
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Source | Own work |
Author | Lamiot |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:17, 16 April 2018 | ![]() | 6,000 × 4,000 (12.51 MB) | Lamiot (talk | contribs) | User created page with UploadWizard |
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Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D7100 |
Exposure time | 1/4 sec (0.25) |
F-number | f/4.5 |
ISO speed rating | 3,200 |
Date and time of data generation | 06:00, 15 April 2018 |
Lens focal length | 105 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Ver.1.02 |
File change date and time | 06:00, 15 April 2018 |
Y and C positioning | Co-sited |
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Exif version | 2.3 |
Date and time of digitizing | 06:00, 15 April 2018 |
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Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 4.4 APEX (f/4.59) |
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Light source | Unknown |
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DateTime subseconds | 40 |
DateTimeOriginal subseconds | 40 |
DateTimeDigitized subseconds | 40 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
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15 April 2018
13,119,314 byte
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5880316d016b12c57ce792b7cd2b4408ddbbe52b
0.25 second
4.5
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105 millimetre
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