Marine Submersion - T100 Overflow and Climate Change - Dunkirk Urban Community
Description
A marine submersion is a temporary and possibly episodic flooding of the coastal zone, generated by the neighbouring sea, with salt or brackish water, during meteorological events (storm, cyclone, strong depression and sea wind) or oceanographic events (hull, tide, tsunami) of very unusual magnitude. It begins when the highest jets of seawater from the sea margin exceed the ridge of coastal accumulations, causing a transfer of water and sometimes sediment on the land slope of the coastal cordon.
Hazard is defined by the intensity of a natural event characterized by probability. A hazard related to a phenomenon and its return period.
Overflow hazard T100 and Climate Change: qualifies, taking into account the effects of climate change, the sectors impacted by the overflow of watercourses (channels) as a result of a marine submersion during a 100-year event.
Resources
| Name |
Format |
Description |
Link |
Tags
- caractéristiques-géographiques-météorologiques
- zones-à-risque-naturel