overflow u3 geol

Debris Flows Movement Characteristics

Debris flows can surge, with the largest particles often moving to the edges and front.

Debris Flows Causes

Earthquakes or strong winds can disturb debris flows, adding to heavy rainfall or snowmelt as triggers.

Sediment Distribution of Debris Flow

The course, bouldery front often rides on a fine-grained core in debris flows, important for understanding movement.

Long-term Debris Flow Impact:

Over millions of years, debris flows can create conglomerates.

Debris Flows Location

Often empty onto alluvial fans, and evidence of past flows includes levees of coarse, angular material and scars on trees.

Granular Flows Grain Size

Granular flows, especially debris avalanches, are large-volume flows that can travel far even on gentle slopes.

Snow Avalanche Slope Angle

Slopes over 25° are especially prone to avalanches depending on snow conditions.