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A distributed converging overland flow model: 1. Mathematical solutions
(American Geophysical Union, 1976-10)
In models for overland flow based on kinematic wave theory the friction parameter is assumed to be constant. This paper studies a converging geometry and allows continuous spatial variability in the parameter. Parameter ...
Downstream hydraulic geometry relations: 1. Theoretical development
(American Geophysical Union, 2003-12-04)
In this study, it is hypothesized that (1) the spatial variation of the stream power of a channel for a given discharge is accomplished by the spatial variation in channel form (flow depth and channel width) and hydraulic ...
Hybrid fuzzy and optimal modeling for water quality evaluation
(American Geological Union, 2007-05-08)
Water quality evaluation entails both randomness and fuzziness. Two hybrid models are developed, based on the principle of maximum entropy (POME) and engineering fuzzy set theory (EFST). Generalized weighted distances are ...
A distributed converging overland flow model: 3. Application to Natural Watersheds
(American Geophysical Union, 1976-10)
The proposed distributed converging overland flow model is utilized to predict surface runoff from three natural agricultural watersheds. The Lax-Wendroff scheme is used to obtain numerical solutions. For determination of ...
Bivariate Drought Analysis Using Streamflow Reconstruction with Tree Ring Indices in the Sacramento Basin, California, USA
(2016-03-30)
Long-term streamflow data are vital for analysis of hydrological droughts. Using an artificial neural network (ANN) model and nine tree-ring indices, this study reconstructed the annual streamflow of the Sacramento River ...
Simulating Crop Evapotranspiration Response under Different Planting Scenarios by Modified SWAT Model in an Irrigation District, Northwest China
(2015-10-06)
Modelling crop evapotranspiration (ET) response to different planting scenarios in an irrigation district plays a significant role in optimizing crop planting patterns, resolving agricultural water scarcity and facilitating ...
The Grading Entropy-based Criteria for Structural Stability of Granular Materials and Filters
(2015-05-04)
This paper deals with three grading entropy-based rules that describe different soil structure stability phenomena: an internal stability rule, a filtering rule and a segregation rule. These rules are elaborated on the ...
Longitudinal Dispersion Coeffiient in Straight Rivers
(2001-11)
An analytical method is developed to determine the longitudinal dispersion coefficient in Fischer’s triple integral expression for natural rivers. The method is based on the hydraulic geometry relationship for stable rivers ...
Improved Finite-Element Method for Solute Transport
(1995-02)
Five major modifications to the Galerkin finite-element formulation for solute transport were made in this study: (1) A mixed formulation for the time-derivative term of the governing equation was developed by combining ...
Wavelet-Based Hydrological Time Series Forecasting
(2016-02-12)
These days wavelet analysis is becoming popular for hydrological time series simulation and forecasting. There are, however, a set of key issues influencing the wavelet-aided data preprocessing and modeling practice that ...