Overturn

{
  "id": "MLC-T-ENV-020014",
  "term": "Overturn",
  "field": "Environment",
  "definition": "1. The almost spontaneous mixing of all layers of water in a reservoir or lake when the water temperature becomes similar from top to bottom. This may occur in the fall/winter when the surface waters cool to the same temperature as the bottom waters and also in the spring when the surface waters warms after the ice melts.\n\n2. One complete cycle of top to bottom mixing of previously stratified water masses. This phenomenon may occur in spring or fall, or after storms, and results in uniformity of chemical and physical properties of water at all depths.",
  "subject": "General environmental",
  "references": [
    "Drinking Water Technical & Legal Terms",
    "Terms of Environment"
  ],
  "url": "https://mlchart.com/terminology/environment/overturn/"
}