Climate, soil, and vegetation: 5. A derived distribution of storm surface runoff

摘要: The Philip infiltration equation is integrated over the duration of a rainstorm uniform intensity to give depth point surface runoff from such an event on natural in terms random variables defining initial soil moisture, rainfall intensity, and storm duration. In zeroth-order approximation moisture fixed at its climatic space time average, whereupon by using exponential probability density functions for duration, function excess derived. This distribution used define annual average derive flood volume frequency relation, both set physically meaningful climate-soil parameters.