File:Embrienne, Vallée de l'Embrienne 10 aout 2017 03 fond de ruisseau.jpg
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[edit]DescriptionEmbrienne, Vallée de l'Embrienne 10 aout 2017 03 fond de ruisseau.jpg |
Français : Vue de l'Embrienne, Vallée de l'Embrienne (dans les Sept Vallées dans le département du Pas-de-Calais, en Région Hauts-de-France, le 10 aout 2017 (première quinzaine du mois inhabituellement pluvieuse dans la région). Le fond de la rivière là où il n'est pas envasé est tapissé de morceaux de "rognons de silex" et localement divers déchets (béton, morceaux de briques érodés). A l'été 2017, certains segments de la première moitié de ce cours d'eau présentent des indices de pollution (tapis et filasses bactériennes, absence de plantes aquatiques, faible nombre d'invertébrés) et d'autres semblent très propres (mais avec peu de poissons et peu d'organismes animaux visibles).
Remarque : Localement ce qui semble être des colonies bactériennes de Nostoc subaquatique de grande taille (jusqu'à plus de 10 cm) sont visibles (assemblages de cyanobactéries dotées de capacités photosynthétique) ; peut -être Nostoc verrucosum ?
English: View of the "Embrienne river" in the "Embrienne valley", in the department "Pas-de-Calais", (Hauts-de-France region in northern France), in the "Seven Valleys". Photo made on the 10th of August 2017 (after two weeks unusually rainy for the region). The bottom of the river - where it is not silted up - is lined with pieces flint. Some segments of the first half of this watercourse shows pollution indices (bacteerial carpets and bacterial filtrates, lack of aquatic plants, low number of invertebrates) and others parts appear to be very clean (but with few fish and few visible animal organisms).
Note: Locally, what appears to be large (up to 10 cm) subaquatic Nostoc bacterial colonies are visible (assemblages of cyanobacteria with photosynthetic capabilities) ; perhaps Nostoc verrucosum ? |
Date | |
Source | Own work |
Author | Lamiot |
Camera location | 50° 29′ 39.77″ N, 1° 58′ 25.1″ E | View this and other nearby images on: OpenStreetMap | 50.494380; 1.973640 |
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Secteur d'Embry.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 11:29, 13 August 2017 | 4,608 × 3,456 (3.93 MB) | Lamiot (talk | contribs) | User created page with UploadWizard |
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This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | NIKON CORPORATION |
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Camera model | COOLPIX W300 |
Exposure time | 1/100 sec (0.01) |
F-number | f/2.8 |
ISO speed rating | 125 |
Date and time of data generation | 14:58, 10 August 2017 |
Lens focal length | 4.3 mm |
Latitude | 50° 29′ 39.77″ N |
Longitude | 1° 58′ 25.1″ E |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | COOLPIX W300 V1.0 |
File change date and time | 14:58, 10 August 2017 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.31 |
Date and time of digitizing | 14:58, 10 August 2017 |
Meaning of each component |
|
Image compression mode | 2 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 24 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
GPS time (atomic clock) | 12:58 |
Satellites used for measurement | 12 |
Reference for direction of image | True direction |
Direction of image | 146.12 |
Geodetic survey data used | WGS84 |
GPS date | 10 August 2017 |
GPS tag version | 0.0.3.2 |