The Problems Facing Breeding and Producing Fish in Babylon Governorate and Ways of Developing this Activity
2018, Volume 1, Issue 22, Pages 11-32
The air's ability to carry large amounts of sand and dust depends on the wind speed, the size of grains of sand or dust, soil and the degree of cohesion, and stability of the atmosphere and the severity of vertical air currents. Generally speaking, the movement of dust particles .
Generated dust storms when the wind speed exceeds 7 m / s as the soil particles adhering surface of the earth will lose power interdependence with fractions. Begins those atoms move when increase the speed of the wind, which overcome the force of friction corn ground surface and the weight of the corn itself.
Occur escalating phenomenon dust in during the day or night, especially in the summer as a result of the extreme heat of the earth's surface and surface air touching it creates severe instability of the surface air layer. The airborne dust, it happens after the phenomena of rising dust and dust storm where the remaining minutes of dust stuck in the air there is no wind . Because of their small size, which up to less than (1 micron) and the remaining dust particles stuck until you reach the extent that it overcomes gravity on static wind up dust to the final stage, a sedimentation.
Take storms flow paths in the movement categorically distances varying dimension mismatch in which they arise and disappear within the borders of the province's political. The ones that travel vast distances across many states or across the seas between continents Kantqalha from the Libyan desert associated with depressions Mediterranean.
The ones that travel vast distances across many states or across the seas between continents Kantqalha from the Libyan desert associated with depressions Mediterranean Some dust storms are linked to systems of light pressure as low seasonal India which starts from India across the Arabian Gulf to Iraq.
As well as low-Sudani, up to the Sinai Peninsula and then east to Iraq and there are storms accompany Aljbhoah depressions and tropical low similarities and Icelandic and the Caspian Sea.Was accompanied by dust storms highlands air as high Sbara The EU and the Azzurri and semi-tropical island.