TURBIDITY CURRENT ACCELERATION

Provided by Gary Parker, St. Anthony Falls Hydraulic Laboratory, University of Minnesota

Total Time: 0:30 (2.9 MB)

Shows a slow moving, relatively turbidity current that overflows a perched basin. As the flow overflows it moves down a steep slope causing it to accelerate. Turbulence increases abruptly. As flow picks up speed it entrains underlying sediment (erosion) which makes the flow denser. This causes the flow to move even faster. Parker describes this process as "ignition."

BACK