the hydrograph at watershed outlet can be expressed as hydrological response of watershed to geomorphological behavior. in present study with the aid of the gis and the concept of instantaneous unit hydrograph, the watershed response was simulated. in present physical method, the iuh is derived from three parameters of time of concentration, storage coefficient and time-area curve of the basin....

the effect of drought indices on hydrostatic variations and qualitative parameters of the zahedan plain's aquifer was investigated. for this purpose, 12-year statistics from observational and piezometry wells in the plain, the drought index of percentage normal )pn), standardized precipitation index )spi(, and 30-year precipitation statistics of zahedan station were used. results revealed ...

In erosion and sedimentation problems, estimating the range of significant stream flows to include when computing sediment transport can prove challenging in ungauged or under-gauged basins. This paper describes an event-based model incorporating a geomorphologic instantaneous unit hydrograph and stochastic descriptions of peak flows and frequency of storm events from nearby reference watershed...

ions: Forms of precipitation, data analysis, rain gauge networks; Infiltration process, infiltration indices and Horton's equation; Evaporation and Evapo-transpiration Pan evaporation, empirical equations for estimating evaporation and evapo-transpiration; Transpiration, Runoff and Hydrographs: Rainfall runoff relations, time area concept, flow duration curve, mass curve, flow hydrograph, Unit ...

A mathematically correct form of the linear storage element’s routing equation is specified requiring only a slight modification of the existing HEC-HMS routine. The new formulation, unlike the current version in use, is unconditionally stable as long as the time step and the storage coefficient values are trivially specified as positive numbers.

To estimate the amount of evapotranspiration in a river basin, the "short period water balance method" was formulated. Then, by introducing the "complementary relationship method," the amount of evapotranspiration was estimated seasonally, and with reasonable accuracy, for both small and large areas. Moreover, to accurately estimate river discharge in the low water season, the "weighted statist...

Objective of the study The purpose of this thesis is to study acquirers performance persistence issue in merger and acquisition (M&A) market based on empirical evidence from EU 15 countries. This study provides an overview of different factors affecting serial acquirers’ performance in M&A market as measured by excess stock returns. Focus of this thesis is to test the existence of acquirers per...