Which wind erosion process moves the most soil?

Which wind erosion process moves the most soil?

• A. Creep
• B. Deflation
• C. Saltation
• D. Suspension

Answer: (C)

When wind moves soil, the main mass transport near the surface comes from saltation. In saltation, grains are lifted by the wind in short hops and then impact the surface, which knocks other grains into motion. This creates a continuous cascade: as grains land, they dislodge neighbors, so a large number of particles are constantly in motion across the surface. That combination of frequent lifting and impactful shattering drives the greatest overall amount of soil movement. Creep involves larger particles rolling or sliding along the ground, but friction and the energy needed to start their motion keep this movement limited compared to saltation. Deflation is about removing fine particles from the surface, creating bare patches, but it’s not the mechanism that transports the bulk of soil across the ground. Suspension carries the finest particles high into the air for long distances, yet the total mass moved at the surface by this process is usually less than the mass moved by saltation.

When wind moves soil, the main mass transport near the surface comes from saltation. In saltation, grains are lifted by the wind in short hops and then impact the surface, which knocks other grains into motion. This creates a continuous cascade: as grains land, they dislodge neighbors, so a large number of particles are constantly in motion across the surface. That combination of frequent lifting and impactful shattering drives the greatest overall amount of soil movement.

Creep involves larger particles rolling or sliding along the ground, but friction and the energy needed to start their motion keep this movement limited compared to saltation. Deflation is about removing fine particles from the surface, creating bare patches, but it’s not the mechanism that transports the bulk of soil across the ground. Suspension carries the finest particles high into the air for long distances, yet the total mass moved at the surface by this process is usually less than the mass moved by saltation.