📖 what
What is a meromictic lake?
GeographyLakes
Quick Answer
A meromictic lake is a lake whose water layers do not mix completely, so the deep water stays isolated from the surface.
The Full Story
Most lakes turn over seasonally, but meromictic lakes have a stable density difference that prevents full mixing. This can happen because of saltier deep water, unusual basin shape, or very sheltered conditions. As a result, the bottom layer may become low in oxygen and preserve chemicals or sediments for long periods. Such lakes are important to scientists because their layered bottoms can record environmental history in detail.
Key Facts
1.Meromictic lakes do not fully mix
2.Density differences often keep deep water isolated
3.They can preserve oxygen-poor bottom layers and sediments
YouTube Angle
Suggested video title for this topic:
"The lake with layers that never really meet"