A beautiful sunrise at the Old Woman Creek National Estuarine Research Reserve in Ohio. The Old Woman Creek Reserve is one of two National Estuarine Research Reserves in the Great Lakes. Credit: Old Woman Creek National Estuarine Research Reserve
Turbidity currents can be set into motion when mud and sand on the continental shelf are loosened by earthquakes, collapsing slopes, and other geological disturbances. The turbid water then rushes downward like an avalanche, picking up sediment and increasing in speed as it flows.