What force causes most of the erosion in desert areas?

Answer 1

The subtropical ridge, which is the subtropical high pressure systems belt created by the atmospheric circulation, and more precisely the Hadley Cell. The subtropical ridge locates in the subtropical latitudes called the horse latitudes. The story begins at the equator, where the strong solar radiation warms up the ground and the atmosphere a lot. As the air mass warms up continuously, the air mass start to lift and to rise. The air mass cools off by the dry adiabatic lapse rate and is moistened as it rises by expansional cooling. When the air mass can't handle more water vapor, the excessive humidity condenses and forms high-level clouds and heavy rain over the equator region. During the condensation the air cools off more slowly (by the satured adiabatic lapse rate). The air mass has now lost the major part part of his water vapor, so it's now very dry. After a given altitude, the air mass can't rise anymore and begins to move towards the polar regions and the air mass if still cooling down. Then, over the subtropical regions the air can't move towards the poles anymore since there is no more espace, so the air mass is forced to descend, to sink over the horse latitudes. As the air sinks, it warms up and dries out (by the dry adiabatic lapse rate again) adiabatically by compressional heating. This large-scale zone of sinking, descending air is called the subtropical ridge over given latitudes forms a great portion og the subtropical hot deserts found in the world like the Sahara, the Arabian Desert, the Libyan Desert, the Atacama Desert, the Namib Desert or the Australian Desert. The sinking air is very dry in these regions prevents cloud developpement and precipitation formation. It's the first factor of creating dry climates. The fact that the hot deserts are hotter than tropics or the equator resides in the fact the air has gained more heat than this one has lost during the Hadley Cell process.

Answer 2

More than likely, it would be wind carrying grains of sand being hurled against a rock continuously.

Answer 3

The common cause of desert erosion is the wind force. Wind erosion frequently occurs in the desert, however, water is still the primary agent of erosion in the area.

Answer 4

Running Water