The S-curve is used-a)to develop synthetic unit hydrographb)to derive...
The S-curve is used to convert the unit hydrograph of any given duration into a unit hydrograph of any other desired duration.
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The S-curve is used-a)to develop synthetic unit hydrographb)to derive...
Explanation:
The S-curve is a graphical representation of the relationship between the cumulative rainfall and the resulting runoff from a basin. It is often used in hydrology for several purposes, including the conversion of a unit hydrograph of one duration into a unit hydrograph of another duration.
The S-curve is developed by plotting the cumulative rainfall against the corresponding cumulative runoff. The resulting curve is typically an S-shape, hence the name. The S-curve can be used to derive the unit hydrograph of a complex storm, which is a useful tool in hydrology for predicting the runoff response of a basin to a given storm.
However, one of the most common applications of the S-curve is to convert the unit hydrograph of one duration into a unit hydrograph of another duration. This is important because different storms have different durations, and it may be necessary to estimate the runoff response of a basin to a storm with a duration that is different from the duration of the storm used to develop the original unit hydrograph.
By using the S-curve, it is possible to estimate the shape of the runoff hydrograph for a given storm duration, based on the shape of the runoff hydrograph for a different storm duration. This is done by scaling the original unit hydrograph in time, using the S-curve to estimate the appropriate scaling factor.
In summary, the S-curve is a useful tool in hydrology for converting the unit hydrograph of one duration into a unit hydrograph of another duration. This is important for predicting the runoff response of a basin to storms with different durations.