TY - GEN T1 - Thermal stratification in retention ponds AU - Tassin, B. AU - Vin\303\247on-Leite, B. AU - Groleau, A. AU - Quiblier, C. DO - 10.4122/1.1000001337 UR - https://www.datacite.org/invalid.html AB - Retention ponds are widely used for runoff control. In France, they are particularly numerous in recent urbanised areas. They are characterised by an area around 1ha and a depth ranging from two to four or five meters. The temperature vertical structure of two such ponds, located in the Paris suburb, was monitored continuously over a 1 month and a10 month period in 2004. This paper aims at showing the polymictic behaviour of these systems during Spring and early Summer. Not only a diurnal stratification is observation, with gradient values over 10\302\260C/m, but also stratified episodes over several days (up to 10 days) occur several times per month. Consequence of this polymictic character on water quality is assessed on dissolved oxygen profiles. KW - Retention pond KW - thermal stratification KW - polymictic KW - water quality KW - dissolved oxygen PY - 2005 PB - DTU Library, Technical University of Denmark (DTU) LA - en ER -