hydrological dynamics Articles

  • What is resiliency in engineering?

    Resilient are the roads on which you drive, the bridges that you cross, and the buildings that stand tall year after year.  Of course, these components of our day-to-day need maintenance just like anything else but chances are, they were designed and constructed with the tools of their time to promote the highest level of foreseeable longevity. Designing for resiliency is critical: ...


    By BeadedStream

  • A dynamic programming segmentation procedure for hydrological and environmental time series

    We present a procedure for the segmentation of hydrological and environmental time series. The procedure is based on the minimization of Hubert’s segmentation cost or various generalizations of this cost. This is achieved through a dynamic programming algorithm, which is guaranteed to find the globally optimal segmentations with K=1, 2, ..., Kmax segments. Various  enhancements can be used ...


    By Springer

  • Book Review: Global Water Dynamics. Shallow and Deep Groundwater, Petroleum Hydrology, Hydrothermal Fluids, and Landscaping by Emanuel Mazor

    Global Water Dynamics. Shallow and Deep Groundwater, Petroleum Hydrology, Hydrothermal Fluids, and Landscaping, by Emanuel Mazor. New York, Marcel Dekker, 2004. 393 pp. ISBN 0-8247-5322-4Keywords: book ...


    By Inderscience Publishers

  • Green roof hydrologic performance and modeling: a review

    Green roofs reduce runoff from impervious surfaces in urban development. This paper reviews the technical literature on green roof hydrology. Laboratory experiments and field measurements have shown that green roofs can reduce stormwater runoff volume by 30 to 86%, reduce peak flow rate by 22 to 93% and delay the peak flow by 0 to 30 min and thereby decrease pollution, flooding and ...


    By IWA Publishing

  • Potential natural vegetation dynamics driven by future long-term climate change and its hydrological impacts in the Hanjiang River basin, China

    Vegetation and land-surface hydrology are intrinsically linked under long-term climate change. This paper aims to evaluate the dynamics of potential natural vegetation arising from 21st century climate change and its possible impact on the water budget of the Hanjiang River basin in China. Based on predictions of the Intergovernmental Panel on Climate Change Special Report on Emissions Scenarios ...


    By IWA Publishing

  • Cold ocean seas and northern hydrology: an exploratory overview

    Oceans are expected to bring their maritime influence to coastal zones, and sometimes further inland, to affect the terrestrial energy and moisture fluxes. Heat and water balances jointly govern northern hydrology, both directly through the hydrological cycle and indirectly through cyclogenesis and radiation regimes. Drawing upon reported examples, a survey is presented to examine the roles of ...


    By IWA Publishing

  • PondR: a process-oriented model to simulate the hydrology of drainage ponds

    Drainage ponds are a useful measure to manage water resources. However, these small water bodies are characterized by highly dynamic internal processes. This article discusses a simple process-oriented model developed to simulate temporal dynamics of internal processes within drainage ponds. The PondR model is able to simulate the relevant hydrological processes of the pond by using commonly ...


    By IWA Publishing

  • Leaf area index as a function of precipitation within a hydrological model

    The Leaf Area Index (LAI) was derived from the Normalised Difference Vegetation Index (NDVI) obtained from Advanced Very High Resolution Radiometer (AVHRR) data for the years 1982–2004. The NDVI-derived LAI showed a very good agreement (correlation coefficient r up to 0.96) with MODIS LAI. To address the relation between precipitation and LAI, linear correlation analysis between ...


    By IWA Publishing

  • Self-adjustment mechanism of bed structures under hydrology and sediment regimes

    Bed structures develop in many coarse gravel-bed rivers, and the distribution of bed structures is obviously impacted by the environment conditions, especially hydrology and sediment regimes. This study carried out field investigations in natural tributaries of the Yangtze River to study the sizes of bed structures, their distribution in the basin, as well as their connections with local ...


    By IWA Publishing

  • The Biotic Pump: Condensation, atmospheric dynamics and climate

    Intense condensation associated with high evaporation from natural forest cover maintains regions of low atmospheric pressure on land. This causes moist air to flow from ocean to land, which compensates the river runoff. Deforestation induces large-scale desiccation by disrupting this flow. Here we overview this theory and quantify the horizontal pressure gradients that govern the continental ...


    By Inderscience Publishers

  • Dynamical downscaling of precipitation in Iceland 1961–2006

    Atmospheric flow over Iceland has been simulated for the period January 1961 to July 2006, using the mesoscale MM5 model driven by initial and boundary data from the European Centre for Medium Range Weather Forecasts (ECMWF). Firstly, the simulated precipitation is compared to estimates derived from mass balance measurements on the Icelandic ice caps. It is found that the simulated precipitation ...


    By IWA Publishing

  • Validation of a mesoscale hydrological model in a small-scale forested catchment

    The aim of this study was to examine the abilities of the mesoscale ecohydrological model Soil And Water Integrated Model (SWIM) to simulate discharge, soil moisture, and groundwater dynamics in a small-scale forested catchment. Moreover, the influence of two lateral flow computation techniques on the simulation efficiency was assessed. Generally, the discharges were simulated poorly. ...


    By IWA Publishing

  • Surface water Sulfate dynamics in the northern Florida everglades

    Received for publication August 24, 2007. Sulfate contamination has been identified as a serious environmental issue in the Everglades ecosystem. However, it has received less attention compared to P enrichment. Sulfate enters the Arthur R. Marshall Loxahatchee National Wildlife Refuge (Refuge), a remnant of the historic Everglades, in pumped stormwater discharges with a mean concentration of ...

  • Climate change and land use impacts on hydrologic processes of watershed systems

    Land use, land cover and climate change (CC) can significantly influence the hydrologic balance and biogeochemical processes of watershed systems. These changes can alter interception, evapotranspiration (ET), infiltration, soil moisture, water balance, and biogeochemical cycling of carbon, nitrogen, and other elements. The need to evaluate the combined effect of land use change and CC of ...


    By IWA Publishing

  • Snowmelt and its role in the hydrologic and nutrient budgets of prairie streams

    Small watersheds in the Canadian Prairies are characterized by seasonally disconnected hydrologic networks whereby stream channels are hydrologically connected during snowmelt but have disconnected reaches throughout the remainder of the year. Snowmelt is the most significant hydrological event in the Canadian Prairies, yet few studies have investigated the role of snowmelt in the nutrient budget ...


    By IWA Publishing

  • Submarine groundwater discharge and alkaline earth element dynamics in a deltaic coastal setting

    Submarine groundwater discharge is a process that is often considered negligible in deltaic systems given their low gradient and fine-grained sediment. However, hydrologic budgets and radon surveys indicate that it may be a significant component of the Mississippi River Delta system. To more concretely indicate groundwater's contribution to the local environment, we conducted an analysis of ...


    By IWA Publishing

  • Reservoir optimization model incorporating inflow forecasts with various lead times as hydrologic state variables

    This paper presents two Stochastic Dynamic Programming models (SDP) to investigate the potential value of inflow forecasts with various lead times in hydropower generation. The proposed SDP frameworks generate hydropower operating policies for the Ertan hydropower station, China. The objective function maximizes the total hydropower generation with the firm capacity committed for the system. The ...


    By IWA Publishing

  • System dynamics and auto-calibration framework for NSM model: Murrumbidgee River

    Water sharing management is the major problem for water resources and irrigation management decision makers. However, irrigation systems are very complex and interconnected, posing significant difficulties in managing irrigation economically and environmentally. Therefore, it is imperative that innovative modelling approaches are employed to deal with the feedback loops inherent in these systems. ...


    By Inderscience Publishers

  • Dynamic risk assessment model for water quality on projection pursuit cluster

    With the aim of reducing the losses from water pollution, a dynamic risk assessment model for water quality is studied in this paper. This model is built on the projection pursuit cluster principle and risk indexes in the complex system, proceeding from the whole structure and its component parts. In this paper, the fuzzy analytic hierarchy process is used to screen out index system and ...


    By IWA Publishing

  • Application of dynamic threshold in sea and lake ice mapping and monitoring

    Ice detection and monitoring algorithms using visible and infrared images are generally founded on thresholds-based approaches. Classification of features over ice covered sea requires a series of reliable thresholds. The change in surface conditions throughout the season affects these thresholds and makes their adjustment necessary. This study proposes an operational method based on a set of ...


    By Inderscience Publishers

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