What is the general term for downslope movement?
landslide. specifically, rapid downslope movement of rock or soil; also a general term for all types of downslope movement. mass wasting.
What causes materials to move downslope?
Untitled. Mass wasting – is movement in which bed rock, rock debris, or soil moves downslope in bulk, or as a mass, because of the pull of gravity. Landslides is a general term for the slow-to-very rapid descent of rock or soil.
How do slumps and translational slides differ?
Slumps or rotational slides have curved slip surfaces, and tend to produce small topographic benches, which may rotate and tilt in an up‐slope direction. Translational slides generally have planar slip surfaces, and materials moves along inclined slip planes within and parallel to a slope.
Why is drainage control considered to be an effective method of landslide control?
Why is drainage control sometimes an effective method of landslide control? It reduces the amount of water in the hill slope materials.
What is flow in type of mass movement?
Types and Examples of Mass Movement. Flows occur when the material, soil, and/or rock, behave more like a liquid or fluid. Flows include mudflows, debris flows or lahars (superheated water that moves down an erupting volcano). Flows occur due to a large amount of water or ice present in the soil or material.
What are the six types of mass movement?
Types of Mass Movement: Creep; Fall, Slip, Flow; Solifluction; Rock Glaciers; Slumping (Earthflow); Mudflow (lahar); Debris Flow, Debris Slide, Debris Avalanche; Rockslide; Rockfall; Debris Fall.
What type of mass wasting moves the slowest?
Creep. Soil creep is a slow and long term mass movement.
What are four ways to prevent mass movements?
Mass movement control must be primarily preventive: e.g., mapping vulnerable zones, drawing up a land use plan, banning building work or any modification of slopes, and protection in the form of coppice forests.
How do you stabilize steep slopes?
Slopes over 50% will require structures or special techniques for stabilization. Techniques for steep slopes include wood retaining walls, interlocking concrete blocks, rock retaining walls, riprap (loose rock) areas, and terracing.
What are 4 types of mass movement?
There are four different types of mass movement:
- Rockfall. Bits of rock fall off the cliff face, usually due to freeze-thaw weathering.
- Mudflow. Saturated soil (soil filled with water) flows down a slope.
- Landslide. Large blocks of rock slide downhill.
- Rotational slip. Saturated soil slumps down a curved surface.