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You searched for: Journal name Hydrological processes Remove constraint Journal name: Hydrological processes Publication year rev 7992-2008 Remove constraint Publication year rev: 7992-2008 Source 2008 v.22 no.26 Remove constraint Source: 2008 v.22 no.26
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1. A two-dimensional inverse model to identify transmissivity in an anisotropic aquifer

Author:
Wu, Shih-Ching; Tan, Yih-Chi; Chen, Chu-Hui; Lin, Shien-Tsung; Ke, Kai-Yuan
Source:
Hydrological processes 2008 v.22 no.26 pp. 5086-5096
ISSN:
0885-6087
Subject:
algorithms; aquifers; groundwater; mathematical models
Abstract:
... This study suggested a numerical model using the Tabu search algorithm along with the Adjoint State method to identify the hydrogeological characteristics of an anisotropic groundwater aquifer. The Tabu search algorithm was applied to identify the anisotropic transmissivity components to avoid a local optimum. Then, the Adjoint State method was used to calculate the sensitivity of the parameters i ...
DOI:
10.1002/hyp.7134

2. Comparison of artificial neural network models for hydrologic predictions at multiple gauging stations in an agricultural watershed

Author:
Mutlu, E.; Chaubey, I.; Hexmoor, H.; Bajwa, S.G.
Source:
Hydrological processes 2008 v.22 no.26 pp. 5097-5106
ISSN:
0885-6087
Subject:
agricultural watersheds; apical meristems; autocorrelation; gauges; hydrologic models; meteorological data; neural networks; prediction; stream flow; Arkansas; Oklahoma
Abstract:
... This paper reports on an evaluation of the use of artificial neural network (ANN) models to forecast daily flows at multiple gauging stations in Eucha Watershed, an agricultural watershed located in north-west Arkansas and north-east Oklahoma. Two different neural network models, the multilayer perceptron (MLP) and the radial basis neural network (RBFNN), were developed and their abilities to pred ...
DOI:
10.1002/hyp.7136

3. Evaluating infiltration losses in a Mediterranean wetland: Las Tablas de Daimiel National Park, Spain

Author:
Castaño-Castaño, S.; Martínez-Santos, P.; Martínez-Alfaro, P.E.
Source:
Hydrological processes 2008 v.22 no.26 pp. 5048-5053
ISSN:
0885-6087
Subject:
wetlands; national parks; aquifers; ecosystems; groundwater; water table; Spain
Abstract:
... Las Tablas de Daimiel National Park is a series of wetlands which naturally originated from groundwater discharges from the Mancha Occidental aquifer, Spain. Despite the relatively large size of this aquifer, 30 years of intensive groundwater pumping have significantly depleted the water table. As a result, wetlands only remain functional due to artificial inflows. Infiltration loss is therefore a ...
DOI:
10.1002/hyp.7124

4. Evaluating the effect of scale in flood inundation modelling in urban environments

Author:
Fewtrell, T.J.; Bates, P.D.; Horritt, M.; Hunter, N.M.
Source:
Hydrological processes 2008 v.22 no.26 pp. 5107-5118
ISSN:
0885-6087
Subject:
computer software; environmental models; floods; friction; geographic information systems; prediction; rivers; urban areas
Abstract:
... Cellular-based approaches for flood inundation modelling have been extensively calibrated and evaluated for the prediction of flood flows on rural river reaches. However, there has only been limited application of these approaches to urban environments, where the need for flood management is greatest. Practical application of two-dimensional (2D) flood inundation models is often limited by computa ...
DOI:
10.1002/hyp.7148

5. Method to improve the mitigative effectiveness of a series of check dams against debris flows

Author:
Osti, Rabindra; Egashira, Shinji
Source:
Hydrological processes 2008 v.22 no.26 pp. 4986-4996
ISSN:
0885-6087
Subject:
control methods; disasters; floods; landslides; mountains; rivers; selection criteria; watersheds; Venezuela
Abstract:
... The advance of technology has led to more competent countermeasures, but lives and properties still continue to suffer from water-induced disasters, such as floods, landslides, and debris flows. To increase the effectiveness of counter systems, improved methods of planning and designing such systems are prerequisite. This paper describes briefly a methodological approach for predicting debris flow ...
DOI:
10.1002/hyp.7118

6. Phosphorus in groundwater--an overlooked contributor to eutrophication?

Author:
Holman, I.P.; Whelan, M.J.; Howden, N.J.K.; Bellamy, P.H.; Willby, N.J.; Rivas-Casado, M.; McConvey, P.
Source:
Hydrological processes 2008 v.22 no.26 pp. 5121-5127
ISSN:
0885-6087
Subject:
adsorption; ecosystems; eutrophication; groundwater; nutrients; phosphorus; surface water; England; Northern Ireland; Scotland; Wales
Abstract:
... This paper presents the first international assessment of phosphorus concentrations in groundwater, using data from the Republic of Ireland, Northern Ireland, Scotland, England and Wales. Phosphorus is considered to be the main limiting nutrient in most freshwater ecosystems. Controlling phosphorus inputs is thus considered the key to reducing eutrophication and managing ecological quality. Very l ...
DOI:
10.1002/hyp.7198

7. A framework to estimate sediment loads using distributions with covariates: Beaurivage River watershed (Québec, Canada)

Author:
Mailhot, A.; Rousseau, A.N.; Talbot, G.; Gagnon, P.; Quilbé, R.
Source:
Hydrological processes 2008 v.22 no.26 pp. 4971-4985
ISSN:
0885-6087
Subject:
parameter uncertainty; pollution load; rivers; sediment transport; sediments; statistical models; stream flow; variance; watersheds; Canada
Abstract:
... A framework to estimate sediment loads based on the statistical distribution of sediment concentrations and various functional forms relating distribution characteristics (e.g. mean and variance) to covariates is developed. The covariates are used as surrogates to represent the main processes involved in sediment generation and transport. Statistical models of increasing complexity are built and c ...
DOI:
10.1002/hyp.7103

8. A new temperature based method to separate rain and snow

Author:
Kienzle, Stefan W.
Source:
Hydrological processes 2008 v.22 no.26 pp. 5067-5085
ISSN:
0885-6087
Subject:
decision support systems; air temperature; methodology; snow; rain; seasonal variation; prairies; climate; hydrologic models
Abstract:
... This paper presents the development and testing of a new method to estimate daily snowfall from precipitation and associated temperature records. The new method requires two variables; the threshold mean daily air temperature at which 50% of precipitation is considered snow, and the temperature range within which mixed precipitation can occur. Sensitivity analyses using 15 climate stations across ...
DOI:
10.1002/hyp.7131

9. An ANN-based model for spatiotemporal groundwater level forecasting

Author:
Nourani, Vahid; Mogaddam, Asghar Asghari; Nadiri, Ata Ollah
Source:
Hydrological processes 2008 v.22 no.26 pp. 5054-5066
ISSN:
0885-6087
Subject:
algorithms; aquifers; high water table; hybrids; hydrologic models; neural networks; piezometers; prediction; urban areas; Iran
Abstract:
... This paper evaluates the feasibility of using an artificial neural network (ANN) methodology for estimating the groundwater levels in some piezometers placed in an aquifer in north-western Iran. This aquifer is multilayer and has a high groundwater level in urban areas. Spatiotemporal groundwater level simulation in a multilayer aquifer is regarded as difficult in hydrogeology due to the complexit ...
DOI:
10.1002/hyp.7129

10. Analysis of the water content in an unconfined aquifer with a partially penetrated pumping well

Author:
Chen, Jiann-Mou
Source:
Hydrological processes 2008 v.22 no.26 pp. 5037-5047
ISSN:
0885-6087
Subject:
aquifers; equations; mathematical models; water analysis; water content; water distribution; water flow
Abstract:
... Most methods developed to represent water flow phenomena in an unconfined aquifer with a fully penetrated pumping well are either numerical, such as the well-known FEMWTER model, or experimental; analytical models of a partially penetrated pumping well are rare. This study employs the linearized Richards equation as the governing equation, with the aid of Fourier Integral Transformation, to obtain ...
DOI:
10.1002/hyp.7123

11. Effects of 2003 wildfires on stream chemistry in Glacier National Park, Montana

Author:
Mast, M. Alisa; Clow, David W.
Source:
Hydrological processes 2008 v.22 no.26 pp. 5013-5023
ISSN:
0885-6087
Subject:
base flow; chlorides; dissolved organic carbon; drainage; glaciers; growing season; long term effects; national parks; nitrates; nitrogen content; nutrients; sediment yield; sediments; snowmelt; springs (water); streams; sulfates; summer; wildfires; Montana
Abstract:
... Changes in stream chemistry were studied for 4 years following large wildfires that burned in Glacier National Park during the summer of 2003. Burned and unburned drainages were monitored from December 2003 through August 2007 for streamflow, major constituents, nutrients, and suspended sediment following the fires. Stream-water nitrate concentrations showed the greatest response to fire, increasi ...
DOI:
10.1002/hyp.7121

12. How nature uses overland flow regime to maximize equilibrium detention storage and flood attenuation

Author:
Wong, Tommy S.W.
Source:
Hydrological processes 2008 v.22 no.26 pp. 5004-5012
ISSN:
0885-6087
Subject:
floods; flow resistance; laminar flow; overland flow; surface water; turbulent flow; water analysis
Abstract:
... Equilibrium detention storage is an important parameter as it has a proportional effect on flood attenuation. In this paper, based on the kinematic wave theory, a working formula for the equilibrium detention storage of an overland plane with upstream inflow has been derived. Since the flow regime over a concrete plane can vary throughout the entire range laminar to turbulent, this case has been s ...
DOI:
10.1002/hyp.7120

13. Identifying individual rain events from pluviograph records: a review with analysis of data from an Australian dryland site

Author:
Dunkerley, David
Source:
Hydrological processes 2008 v.22 no.26 pp. 5024-5036
ISSN:
0885-6087
Subject:
arid lands; climate change; history; rain; runoff; selection criteria; storms
Abstract:
... Rainfall is routinely reported as falling in 'events' or 'storms' whose beginning and end are defined by rainless intervals of a nominated duration (minimum inter-event time, MIT). Rain events commonly exhibit fluctuations in rain rate as well as periods when rain ceases altogether. Event characteristics such as depth, mean rain rate, and the surface runoff volume generated, are defined in relatio ...
DOI:
10.1002/hyp.7122

14. Multifractal detrended fluctuation analysis of streamflow series of the Yangtze River basin, China

Author:
Zhang, Qiang; Xu, Chong-Yu; Chen, Yongqin David; Yu, Zuguo
Source:
Hydrological processes 2008 v.22 no.26 pp. 4997-5003
ISSN:
0885-6087
Subject:
floods; memory; stream flow; water analysis; water management; watersheds; China; Yangtze River
Abstract:
... Scaling and multifractal properties of the hydrological processes of the Yangtze River basin were explored by using a multifractal detrended fluctuation analysis (MF-DFA) technique. Long daily mean streamflow series from Cuntan, Yichang, Hankou and Datong stations were analyzed. Using shuffled streamflow series, the types of multifractality of streamflow series was also studied. The results indica ...
DOI:
10.1002/hyp.7119