Modelling sediment deposition and phosphorus retention in a river floodplain
نویسندگان
چکیده
منابع مشابه
Floodplain Hazard Mapping in the Iranshahr River by Using Two-Dimensional Numerical Modelling and GIS
Today, the preparation of flood zoning maps is one of the basic and important issues in the study of development projects in the world; it is considered before any investment by the related organizations. In this paper, flood zoning was performed using the two-dimensional model HEC-RAS and GIS in order to assess the risk of the construction of a railway station near the bank of the Iranshahr Ri...
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More than 70,000 large dams have been built worldwide. With growing water stress and demand for energy, this number will continue to increase in the foreseeable future. Damming greatly modifies the ecological functioning of river systems. In particular, dam reservoirs sequester nutrient elements and, hence, reduce downstream transfer of nutrients to floodplains, lakes, wetlands, and coastal mar...
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The prevailing "puzzle" in watershed phosphorus (P) management is how to account for the nonconservative behavior (retention and remobilization) of P along the land-freshwater continuum. This often hinders our attempts to directly link watershed P sources with their water quality impacts. Here, we examine aspects of within-river retention of wastewater effluent P and its remobilization under hi...
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In-river phosphorus retention alters the quantity and timings of phosphorus delivery to downstream aquatic systems. Many intensive studies of in-river phosphorus retention have been carried out but generally on a short time scale (2–4 years). In this paper, monthly water quality data, collected by the Environment Agency of England and Wales over 12 years (1990–2001), were used to model daily ph...
متن کاملA Comparison of Phosphorus Retention in Lakes Determined from Mass Balance and Sediment Core Calculations
Phosphorus retention (TPacc) was determined in 7 lakes in Ontario, Canada from mass balances and from the direct measurement of phosphorus accumulation in the sediments. Phosphorus retentions determined using the mass balance technique ranged between 20 ± 3.9 and 94 ± 23 mg/m/yr and were slightly lower than those calculated by multiplying sediment total phosphorus (TP) concentrations by sedimen...
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ژورنال
عنوان ژورنال: Hydrological Processes
سال: 2014
ISSN: 0885-6087
DOI: 10.1002/hyp.10152