File:Lit majeur AA AmontDe LaRocadeArques.jpg
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[edit]DescriptionLit majeur AA AmontDe LaRocadeArques.jpg |
Français : Photo prise en début de décrue en amont de la Commune d'Arques, lors de l'inondation record de l'Aa (niveau record dépassé de 40 cm), début mars 2002. La rocade construite dans la vallée selon le principe technique du "déblai-remblais" semble avoir bloqué une partie du flux, protégeant (un peu) Arques en aval, mais exacerbannt la crue en amont. Les ouvrages ont été sous-dimensionnés (malgré une étude d'impact et enquête publique). On peut se demander si l'abandon ou la destruction de presque tous les barrages en Amont n'a pas fortement accru le débit de pointe de la crue. Autrefois l'onde de crue suivait les grosses pluies de plusieurs heures, voire de plusieurs jours. Ici la crue a été anormalement brutale, le paysage ne portant pas en aval de trace d'une pluie assez exceptionnelle pour expliquer la violence de l'onde de crue. la zone inondée est ici un champs qui est en fait une ancienne prairie de fond de vallée mise en culture (labour) les années précédentes. |
Date | |
Source | Own work |
Author | Lamiot |
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[edit]I, the copyright holder of this work, hereby publish it under the following licenses:
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:17, 3 December 2007 | 945 × 482 (124 KB) | Lamiot (talk | contribs) | == Description == {{Information |Description= {{fr}} Photo prise en début de décrue en amont de la Commune d'Arques, lors de l'inondation record de l'Aa (niveau record dépassé de 40 cm), début mars 2002. La rocade construite dans la vallée selon le |
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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 | SONY |
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Camera model | CYBERSHOT |
Date and time of data generation | 22:02, 1 March 2002 |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 22:02, 1 March 2002 |
Y and C positioning | Co-sited |
Exif version | 2.1 |
Date and time of digitizing | 22:02, 1 March 2002 |
Image compression mode | 2 |
Color space | sRGB |