File:River bank repair on the River Avon, Saltford.jpg
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Summary
[edit]DescriptionRiver bank repair on the River Avon, Saltford.jpg |
English: River bank repair on the River Avon, at Mead Lane Saltford. The natural bank is being strengthened with boulders and logs as seen on the left, then covered with a jute or hessian material which allows plant growth through the material. A minor road, Mead Lane, is on the river bank, and requires protection from erosion. Work carried out for British Waterways.
This method of repair is described as a bio-engineering solution to "combine the advantage of engineering structures with the engineering and environmental benefits of vegetation". A long description of the technique is: "Rock armour deposited at the toe of the bank providing protection against erosion up to the mean water level. Area behind the rocks to be filled with granular material at a shallow gradient, with a geotextile separation membrane behind the rock face to prevent fines being washed through. Reconstructed riverbank to be seeded and covered with a degradable geotextile matting, pinned into place at regular intervals. Fibre roll, planted with well established vegetation to be fixed on top of rock armour at the mean water level". |
Date | |
Source | Own work |
Author | Rwendland |
Camera location | 51° 24′ 27.79″ N, 2° 26′ 49.92″ W | View this and other nearby images on: OpenStreetMap | 51.407720; -2.447200 |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:24, 22 May 2011 | 1,600 × 1,200 (768 KB) | Rwendland (talk | contribs) |
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Metadata
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Camera manufacturer | FUJIFILM |
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Camera model | FinePix2600Zoom |
F-number | f/8.7 |
ISO speed rating | 100 |
Date and time of data generation | 08:35, 25 September 2005 |
Lens focal length | 18 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Digital Camera FinePix2600Zoom Ver3.00 |
File change date and time | 08:35, 25 September 2005 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.1 |
Date and time of digitizing | 08:35, 25 September 2005 |
Image compression mode | 3.2 |
APEX shutter speed | 6.7 |
APEX aperture | 6.2 |
APEX brightness | 8.38 |
APEX exposure bias | 0 |
Maximum land aperture | 3.6 APEX (f/3.48) |
Metering mode | Pattern |
Flash | Flash did not fire |
Color space | sRGB |
Focal plane X resolution | 3,053 |
Focal plane Y resolution | 3,053 |
Focal plane resolution unit | 3 |
Sensing method | One-chip color area sensor |
Sharpness | 3 |
White balance | Auto white balance |