density current

A proper relativistic theory with a probability density current must also share this feature.

They suggest that the shear occurred as the density current passed over the forming deposit.

The river works as a density current, because it carries sediments along the sea floor and has a higher salinity than the surrounding water.

The most common of these is the density current, epitomized by the Thermohaline current.

Pyroclastic density currents can also produce ash particles.

This release produces a gas-supported dust flow that moves as a tenuous density current downslope.

Density currents are formed in the reservoir on account of a combination of temperature gradients and high sediment concentration.

The deposit thicknesses vary from 10 cm to 12 m. Phases 3 and 4 are pyroclastic density current deposits.

Another model proposed is that the density current became stationary prior to the formation of the rheomorphic structures (Ragan et al. 1972).

If the sedimenting layer had a range of crystal sizes a graded bed could form, thereby providing an alternative mechanism to magmatic density currents.

Volcanic ash plumes can form above pyroclastic density currents, these are called co-ignimbrite plumes.

He discovered the phenomenon of density currents in lakes, and explained seiches, the rhythmic oscillations observed in enclosed waters.

An ignimbrite is the deposit of a pyroclastic density current, or pyroclastic flow.

Another model proposes that dark slope streaks are produced by ground-hugging density currents of dry dust lubricated by carbon dioxide (CO) gas.

Pyroclastic density currents, which are referred to as "flows" or "surges" depending on particle concentration and the level turbulence, are sometimes called glowing avalanches.

These processes produce large quantities of very fine grained ash which is removed from pyroclastic density currents in co-ignimbrite ash plumes.

These plumes tend to have higher concentrations of fine ash particles compared to magmatic eruption plumes due to the abrasion within the pyroclastic density current.

All the seismographs at Clark Air Base had been rendered inoperative by 14:30 on June 15, mostly by pyroclastic density currents.

The density current works on a basic principle: the denser water sinks to the bottom, separating from the less dense water, and causing an opposite reaction from it.

If the density current is sufficiently hot the particles will agglutinate and weld at the surface of sedimentation to form a viscous fluid, this is primary welding.

Volcanic ash is formed during explosive volcanic eruptions, phreatomagmatic eruptions and during transport in pyroclastic density currents.

The tephra is often unaltered and thinly bedded, and is generally considered to be an ignimbrite, or the product of a pyroclastic density current.

Pyroclastic flows that contain a much higher proportion of gas to rock are known as "fully dilute pyroclastic density currents" or pyroclastic surges.

A pyroclastic flow is a type of gravity current; in scientific literature they are sometimes abbreviated to PDC (pyroclastic density current).

Welded tuffs (and welded lapilli-tuffs) can be of fallout origin, or deposited from pyroclastic density currents, as in the case of ignimbrites.