نتایج جستجو برای: geochemical tracers
تعداد نتایج: 20295 فیلتر نتایج به سال:
Abstract The destructive effects of wind erosion on the environment and human activities have led to the identification and quantification of sources of wind sediments as an important issue for planners. Due to the importance of the subject, in this study, the origin of wind sediments in Jalali sands has been investigated. To achieve this, after mapping the geomorphological facies of the study...
Introduction Many catchment erosion studies focus on formation and land use as the primary source of sediment. It is important to improve information on sediment sources, especially in large catchments and sediment source information which can support catchment management decisions. Erosion control projects need to be understood as the relative contributions of different sediment sources f...
The Ipojuca River is the third most polluted fluvial system in Brazil. Sediment-associated metal fluxes threaten environmental health estuary of this system. However, sources supplying these particle-bound contaminants have not been determined yet. Sediment source fingerprinting provides a powerful technique to obtain such information. Accordingly, aim study was quantify contributions suspended...
Since naturally occurring methane and saline groundwater are nearly ubiquitous inmany sedimentary basins, delineating the effects of anthropogenic contamination sources is a major challenge for evaluating the impact of unconventional shale gas development on water quality. This study investigates the geochemical variations of groundwater and surface water before, during, and after hydraulic fra...
Abstract Purpose Lake Victoria has been increasingly silting over the past decades, impacting water quality and loss of biodiversity. Sediment control strategies require information on relative absolute contributions sediment from different sources. However, to date, there is no continuous monitoring flux or in any tributaries, prohibiting an assessment scale problem. The aim this study was tra...
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