Nile River delta

Nile, Egypt 622,000 rice It is one of the world s largest river deltas and it is a rich agricultural region. Within the delta, land use includes agricultural (primarily cotton) and industrialized activities [32, 39]... 

In a classic paper, Pillsbury (1981) described how recycling of salts via irrigation and agricultural return flow controls the salinity of downstream rivers in arid zones. Once the natural salt balance is disturbed and salts begin to accumulate, either in the unsaturated zone or in drainage waters, the salinity increases. The salinity of the Colorado River is derived from a century of activity that includes upstream diversion of freshwater, massive irrigation, evapotranspiration and salt accumulation in the soil, and return of saline drainage back to the river (Pillsbury, 1981). Similarly, the rise of the salinity in the Nile Delta has been attributed to a disturbance of the natural salts balance after the construction of Assuan dam and the reduction of the natural outflow of salts from the Nile River to... 

The Greek historian Herodotus coined the term delta for the landform where the Nile river flows into the Mediterranean Sea the sediment deposited at the river s mouth has the shape of the upper-case Greek letter A. 

At the point where the Mississippi River meets the Gulf of Mexico, one of the largest deltas in the United States is still growing. Other large deltas include those formed in the Mediterranean Sea by the Nile, Rhone, Po, and Ebro Rivers, as well as those created where the Ganges-Brahmaputra River joins the Bay of Bengal, and where rivers empty into the South China Sea. 

Reactivity, p, is a dimensionless quantity, but sometimes it is assigned the dimensionless unit of Niles , where 1 Nile = 0.01. (The word Nile originates from the terminology Ak = k— I, and is a pun on the River Nile s well-known delta downstream of Cairo.) Alternatively, reactivity may also be referred to in dollars, the ratio of the reactivity to the delayed neutron fraction ... 

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