Sediment Transport Processes and their Modelling Applications is a book which covers a
wide range of topics. The effective management of many aquatic environments, requires a
detailed understanding of sediment dynamics. This has both environmental and economic
implications, especially where there is any anthropogenic involvement. Numerical models
are often the tool used for predicting the transport and fate of sediment movement in these
situations, as they can estimate the various spatial and temporal fluxes.
Sediment transport is a book that covers a wide variety of subject matters. It combines the personal and professional experience of the authors on solid particles transport and related problems, whose expertise is focused in aqueous systems and in laboratory flumes. This includes a series of chapters on hydrodynamics and their relationship with sediment transport and morphological development.
Tuyển tập các báo cáo nghiên cứu khoa học ngành toán học được đăng trên tạp chí toán học quốc tế đề tài: A new approach to investigate the interactions between sediment transport and ecotoxicological processes during flood events
The use of models to provide additional details on contaminant fate and transport
has rapidly increased in the past 3 decades. The increasing global recognition of the
potential risks associated with surface water or ground water contamination and
speciÞc environmental regulations implemented after 1980 have demanded a more
accurate understanding of these risks as they relate to human health and the environment.
The search for oil occurs in geological sediments, as opposed to volcanic rocks. Several
processes are involved in the creation of sediments. First, the inland continental volcanic rock is
continuously being weakened and eroded by weathering processes (mechanical (through water,
ice and wind) and chemical erosion). Secondly and simultaneously, the eroded material is being
transported by water, ice and wind and gradually the material may be broken down into smaller
pieces (from boulders to gravel, to sand, to silt and finally to clay).
In case of the control period (1961-1990), the initial and the lateral boundary conditions for
the regional model are taken from (i) the ERA-40 reanalysis database (Uppala et al., 2005)
using 1° horizontal resolution, compiled by the European Centre for Medium-range
Weather Forecasts (ECMWF), and (ii) the HadCM3 ocean-atmosphere coupled GCM using
~150 km as a horizontal resolution. For the validation of the PRECIS results CRU TS
1.2 (Mitchell & Jones, 2005) datasets were used.
Hydrodynamics and morphodynamics of a seasonally forced tidal inlet system are investigated using numerical models. The ocean forcing including tidal and wave actions and sediment transport is simulated using Delft3D model. Fluvial processes in Delft3D are taken into account as results from SOBEKRURAL model.
Due to their low aqueous solubilities, the PCBs and PAHs lay on the surface of soils and
waters. PCBs and PAHs adsorb strongly to the organic fraction of soils (Girvin & Scott, 1997;
Hiller et al., 2011). Soils contaminated with PCBs and PAHs are transported directly or
indirectly by rivers to the water reservoir and are subsequently converted into the bed
sediments. Therefore, soils could be considered as the primary sinks for these organic
contaminants. PCBs and PAHs are persistent in the environment, resistant to degradation
process, and accumulate in food chain.