spatial variation of sediment

  • Spatial variation in sediment characteristics and ...

    Spatial variation in sediment characteristics and macrofaunal diversity in the intertidal zones of Elechi Creek, upper Bonny estuary. Journal of Environmental Toxicology and Public Health 3: 3037.

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  • Spatial variation of sediment bacterial community in an ...

    Spatial variation of sediment bacterial community in an acid mine drainage contaminated area and surrounding river basin. Author links open overlay panel Dongmei Hou a b Pan Zhang a b Jiachao Zhang a b Yaoyu Zhou a b c Yuan Yang a b Qiming Mao a b Daniel Tsang c Avelino NúñezDelgado d Lin Luo a b. Show more.

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  • (PDF) Spatial variation of surface sediment nutrients in ...

    PDF | We investigated the spatial variation of sediment nutrients in Lake Taihu, China. Surface sediments were collected at 106 sampling site, spaced about 5 km apart in Jan 2014. The results ...

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  • Seasonal and spatial variation in the sediment bacterial ...

    To explore the influence of seasonal and regional environmental factors on the bacterial community composition (BCC) and diversity in the sediments of Lake Bosten, the 16S rRNA gene of sediment bacteria in four samples from the lake center area and the macrophyte‐dominated area were sequenced using 454 pyrosequencing.

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  • Spatial and Temporal Variations in Grain Size of Surface ...

    Jan 01, 2012· In this study, the data of surface sediment samples collected from the littoral area of the Yellow River Delta in 2000 and 2007 are used to investigate the spatial distribution and transport pathway of the sediment, as well as the grain size response to the drastic decrease in riverine sediment …

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  • Spatial Variation in Physicochemical Characteristics of ...

    This study assessed the spatial variation in physicochemical properties of sediment along Epie creek, Niger Delta, Nigeria. Samples of the sediment were collected in triplicates from 5 different location along Epie creek using sediment grab. The samples were processed and …

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  • Temporal and spatial variations of surfzone currents and ...

    Temporal and spatial variations of surfzone currents and suspended sediment concentration Ping Wanga,*, Bruce A. Ebersoleb, Ernest R. Smithb, Bradley D. Johnsonb aDepartment of Geology, University of South Florida, 4202 East Folwer Avenue, SCA 528 Tampa, FL 33620, USA Army Engineer Research and Development Center, Coastal and Hydraulic Laboratory,

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  • (PDF) Spatial and temporal variation of sediment ...

    Spatial and temporal variation of sediment properties along the coast of the Sanriku District, Iwate Prefecture, due to the tsunami generated by the Great East Japan Earthquake in 2011.

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  • Spatial variation of heavy metals in surface sediments of ...

    Each individual swamp displayed a wide variation in its sediment metal concentration as reflected by the large standard deviation values within the same sampling site. This suggests that spatial variation within each swamp was obvious and there were ‘hot spots with metal contamination’ within each swamp.

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  • Time and spatial variability of sediment grading in the ...

    Temporal and spatial variations in sediment gradation in the surfzone were investigated for a large scale nourishment Epand MotorF at the autch coast E~ million mP sandF. This nourishment provides an excellent opportunity to investigate the effect of hydrodynamic conditions on the spatial and temporal development of sediment grading. A

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  • Spatial variation of sediment mineralization supports ...

    Spatial variation of sediment mineralization supports differential CO 2 emissions from a ... and toward a close link between sediment OC mineralization and the spatial variability in ... including the Manso Reservoir (Roland et al., 2010), reported that pCO 2 and CO 2 emissions are also linked to spatial variations of the systems ...

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  • Spatial variations of microbial communities in abyssal and ...

    May 17, 2019· Aiming to reveal the spatial variations of prokaryotic microbes and find potentially unique groups in the hadal sediments, we investigated five sediment cores from the trenchaxis of the Challenger Deep and nine slope sediment cores ranging in depth from 5,480–7,850 m during three cruises in 2016–2017.

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  • Spatial and Temporal Variations in Landscape Evolution ...

    Jan 01, 2013· AbstractSediment generation and transport through terrestrial catchments influence soil distribution, geochemical cycling of particulate and dissolved loads, and the character of the stratigraphic record of Earth history. To assess the spatiotemporal variation in landscape evolution, we compare global compilations of stream gauge–derived and cosmogenic radionuclide (CRN)–derived ...

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  • Tidaldriven variation of suspended sediment in Hangzhou ...

    Therefore, studying the temporal and spatial variations and the distribution of suspended sediment concentration in estuary regions is of great importance in the investigations of water quality, underwater light field, marine ecology, estuary topography and carbon cycle (Schlünz and Schneider, 2000).

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  • INVESTIGATION OF THE SPATIAL AND TEMPORAL VARIATION …

    In this research, an hydrological modelling tool, soil and water assessment tool (SWAT) used to investigate the spatial and temporal variation of sediment yield in a watershed. The model was run for 31years using spatial data such as Digital Elevation Model, soil map, land use and precipitation, wind and solar radiation.

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  • Spatial variation of sediment bacterial community in an ...

    Microbial community is sensitive to the variations of environment, and it plays an important role in biogeochemical cycling in acid mine drainage (AMD). In this study, an integrated highthroughput absolute abundance quantification (iHAAQ) method was applied to study the dynamics of microbial community and the characteristics of microorganism.

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  • Spatial and seasonal variations of nutrients in sediment ...

    Jan 24, 2014· Seasonal and spatial variations of pore water nutrient concentrations and profile patterns in sediments were studied. Nutrient fluxes at the sedimentwater interface (SWI) were measured by incubation experiments, and we here discussed the accumulation and transformation processes of nutrients at the SWI.

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  • The Temporal and Spatial Variation of Erosion and Sediment ...

    The Loess Plateau in the Middle Yellow basin is located within 34°N4—41°N and 102°E—114°E. It covers an area of about × 10 sq. km, has a precipitation varying …

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  • On the temporalspatial variation of sediment size ...

    Explicit formulae for the temporalspatial variation of the hyperbolic parameters predicted by the model are derived for stable bed forms and alluvial streams. The results are compared to field observations. Also the effect of the spatial gradient of the grain sorting is considered.

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  • Spatial and temporal variation of sediment yield in the ...

    Using the developed relations, areally‐adjusted sediment yield maps are created over the entire Huanghe basin. Maps of the Loess Plateau for periods before and after 1970 reveal major changes in sediment yield, indicating that land management may have a major effect on sediment dynamics within a short period of time.

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  • Temporal and spatial variation of infilling processes in a ...

    Spatial variation in sediment transport at the Kumanodaira landslide scar in central Japan was investigated by field observations. Spatial distribution of the rate of change in soil depth was estimated using sediment transport data and geographic information system (GIS) analysis.

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  • Spatial variation of phosphorus fractions ... SpringerLink

    Jun 18, 2009· Abstract. Spatial variation of phosphorus fractions in bottom sediment, pore water and overlying water in three shallow eutrophic lakes, Nishiura, Kitaura and Sotonasakaura, Japan, and the contributions of the fractional P to mobilization of phosphorus from sediment …

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  • Spatial variation of sediment bacterial community in an ...

    Spatial variation of sediment bacterial community in an acid mine drainage contaminated area and surrounding river basin Article in Journal of Environmental Management 251:109542 · September 2019 ...

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  • Temporal and Spatial Dynamics of Sediment ... SpringerLink

    Oct 10, 2016· Anammox bacterial community richness, diversity, and structure in these two freshwater lakes were subjected to temporal and spatial variations. Sediment anammox bacterial communities in Dianchi Lake and Erhai Lake were dominated by Candidatus Brocadia and a novel phylotype followed by Candidatus Kuenenia; however, these two lakes had distinct ...

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  • Spatial and Temporal Variations in Grain Size of Surface ...

    In this study, the data of surface sediment samples collected from the littoral area of the Yellow River Delta in 2000 and 2007 are used to investigate the spatial distribution and transport pathway of the sediment, as well as the grain size response to the drastic decrease in riverine sediment discharge.

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  • Spatial and temporal variation of stream chemistry ...

    The objective of this study was to investigate spatial and temporal variations in water chemistry and suspended sediment in these four relatively small watersheds that represent a range of landuse patterns and underlying geology to (1) characterize current waterquality conditions in these watersheds, and (2) identify the dominant sources ...

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  • Environmental factors controlling spatial variation in ...

    Jun 15, 2008· A large spatial variability in sediment yield was observed from small streams in the Ecuadorian Andes. The objective of this study was to analyze the environmental factors controlling these variations in sediment yield in the Paute basin, Ecuador.

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  • Spatial and temporal variation of sediment yield in the ...

    Mar 18, 2008· The objective of this study, therefore, is to describe the spatial and temporal variation of sediment yield within a large basin with complex geology, climate, land use history and extensive sediment monitoring, in order to provide a new perspective on the spatial and temporal patterns of sediment …

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  • Spatial Analysis

    Spatial variation of sediment yield in the landscape Regional scale relationships between specific sediment yield and drainage area in the Missouri basin reveal varying landscape sedimentary dynamics. Declining specific sediment yield with area is typical of disturbed agricultural areas, while increasing yields indicate the remobilization of ...

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  • Temporal and spatial variations of streamflow and sediment ...

    This article shows a detailed description of the temporal and spatial variations of water and sediment in the upper and middle reaches of the YR in the LP, providing a reliable reference for developing more ecological soil and water conservation measures and healthy water cycle on the LP in the future.

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  • Spatial and Temporal Variation of the ParticleSize ...

    Existing evidence indicates that there is considerable spatial variability in the particlesize characteristics of suspended sediment at the global scale and that rivers may also exhibit contrasting patterns of temporal variation.

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  • (PDF) Evaluating spatial variation of suspended sediment ...

    This study evaluated the spatial variations of sediment rating curves (SRCs) in the middle YRB. Both power and linear SRCs were used to fit daily flow and suspended sediment concentration (SSC ...

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  • Seasonal and Spatial Variation in Suspended Sediment ...

    Results demonstrate that there are significant seasonal and spatial variations in particle size spectra and mean grain size. These variations are mainly due to flocculation, influenced by the spatial distribution of salinity and suspended sediment concentration in June by …

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