نتایج جستجو برای: hydrograph

تعداد نتایج: 1010  

2016
Tyler Smith Kaitlin Hayes Lucy Marshall Brian McGlynn Kelsey Jencso

The transferability of hydrologic models is of ever increasing importance for making improved hydrologic predictions and testing hypothesized hydrologic drivers. Here, we present an investigation into the variability and transferability of the recently introduced catchment connectivity model (Smith et al., 2013). The catchment connectivity model was developed following extensive experimental ob...

Journal: :Environmental Modelling and Software 2007
Robbie M. Andrew John R. Dymond

A distributed water balance model is used to simulate the soil moisture regime of the Motueka catchment. The model is a major simplification of the Distributed HydrologyeVegetationeSoil Model (DHVSM) with modifications suitable for the study area. The model was applied at 25-m resolution with a 1-day time-step for 10 years. The simulated hydrograph showed good correspondence with the observed h...

2007
J. M.V. Samani A. Solimani

Detention rockfill dams are an easy and common tool for flood control. Due to their coarse pores, the flow in void spaces is turbulent and non-Darcy. Different relationships introduced by researchers are used to define the hydraulics of the flow within the rockfill materials. The present research is aimed at gaining a better understanding of the difference among these relationships and the sour...

2017
Author

The calculation of loss is vital for design flood estimation models and in order to estimate continuing loss (CL), proportional loss (PL) and volumetric runoff coefficient, the surface runoff has to be separated from the total given in a stream flow hydrograph. To obtain the volume of surface runoff from the streamflow hydrograph, baseflow separation becomes necessary and in this paper a few ba...

2008
Shawn Dent

The usefulness of a hydrologic model is directly related to its application and how well it is calibrated. Calibration is a subjective exercise where model parameters are adjusted to reduce discrepancies between measured data and modeled predictions. Automated calibration can be used to accelerate the model calibration process, minimize modeler bias, and increase the goodness of fit between mea...

2014
Y. Yokoo

Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Abstract Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Abstract This study compared a time source hydrograph separation method to a geographic source separation method, to assess if the two methods produced similar results. The time source separation of a hydrograph was performed us...

2015
Yongwon Seo Young-Ho Seo Young-Oh Kim

Hydraulic and hydrologic analysis in urban catchments is typically accompanied by a number of uncertainties, such as a lack of required information for modeling purposes or complex loops inside a drainage network. In this article, Gibbs’ stochastic network model is utilized in order to achieve a dendritic network that corresponds to a fully looped network in terms of the peak of the runoff hydr...

Journal: :desert 2013
h. ahmadi a. a. mohammadi sh. khalighi a. salajegheh s. soltani

the estimation of instantaneous peak discharge is important for watershed management because there is ainsufficient climatic and hydrologic data in countries such as iran. researchers have been forced to link constantparameters (geomorphology) and variable parameters (hydrology) to models with minimum dependence on climaticand hydrologic data for hydrologic estimation. the present study used a ...

Journal: :Hydrological Research Letters 2023

This study aims to clarify the contributions of pre-event water storm runoff using environmental tracers (dissolved inorganic ions and stable isotopes) in a tropical forested catchment Puchong, Selangor, Malaysia. We performed intensive sampling campaigns stream throughfall for two events July November 2018. The discharge showed low peak 0.13 mm/h event 1, with 18 mm total rainfall, whereas 2, ...

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