surface sediment grain size
The 4.2 ka BP event: multi-proxy records from a closed lake in the northern margin of the East Asian summer monsoon
... the grain-size distribution, ostracode as- semblage, pollen assemblage, and the pollen-reconstructed mean annual precipitation from a sediment core at Hulun Lake in northeastern Inner Mongolia ...
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Reconstruction of sediment-transport pathways on a modern microtidal coast by a new grain-size trend analysis method
... net sediment-transport patterns on the tidal sand ...tracer sediment, as it can be clearly identified from natural sand, both visually and by microscopic ...mean grain size was ...bottom ...
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Variations in quantity, composition and grain size of Changjiang sediment discharging into the sea in response to human activities
... and sediment monitoring program for the entire catchment has been implemented since the 1950s by the Changjiang Water Resource Commission (CWRC) under the supervision of the Ministry of Water Resources, China ...
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Fluvial response to changes in the magnitude and frequency of sediment supply in a 1-D model
... mean surface grain size and slope from the flume ...bed grain size distri- butions were well mixed, the good match in mean surface grain size also implies a good ...
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Improving Intertidal Reef Mapping Using UAV Surface, Red Edge, and Near-Infrared Data
... two sediment classes could be due to two factors: (1) the coarse grain-size making the water content rapidly invisible to the RE and NIR bands at low tide; (2) the potential confusion of these ...
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What Do We Know About Technical Assistance? Enhancing the Science and Practice of Technical Assistance via a Research Synthesis
... the sediment transport capacity of the coarse and the fine material, do not change in the streamwise ...bed surface in the upstream part of the domain the sediment transport rate will change in the ...
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High resolution mapping of sediment organic matter from acoustic reflectance data
... the sediment surface and support algal growth, and in the absence of chemosynthetic pro- duction, the sole source of organic matter (OM) is sedimentation from the photic zone ...the sediment, ...
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Habitat suitability of the Wadden Sea for restoration of Zostera marina beds
... creased sediment grain size, and the rapid superficial run- off of tidal water due to the disappearance of elevated mussel beds, may have resulted in an increased degree of desiccation of the ...
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Impact of change in erosion rate and landscape steepness on hillslope and fluvial sediments grain size in the Feather River basin (Sierra Nevada, California)
... the surface of landslide and gravel bar sediment using photographic methods (see ...the size of the grid applied to the pho- tographs should be chosen so that no more than one grid in- tersection ...
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Investigations of grain size dependent sediment transport phenomena on multiple scales
... Sediment transport under the action of waves and currents may be characterized by two primary modes, bedload and suspended load. Bedload transport involves the movement of sediment by slipping, rolling, or ...
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Calibration of CCHE2D for Sediment Simulation of Tarbela Reservoir
... for sediment to adjust from a non- equilibrium state to an equilibrium state, is a very important parameter in the nonequilibrium transport approach used in NCCHE ...
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Late Holocene climatic variability in Subarctic Canada: Insights from a high-resolution lake record from the central Northwest Territories
... Particle size shifts provide information about watershed processes; changes have been linked to changing local snow pack and spring freshet conditions and explain a large percent- age of the variance in ...
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Cohesive and mixed sediment in the Regional Ocean Modeling System (ROMS v3.6) implemented in the Coupled Ocean–Atmosphere–Wave–Sediment Transport Modeling System (COAWST r1234)
... suspended sediment concentration field was initialized with a uniform concentration of 1 kg m −3 , all in the 37 µm ...bed sediment response for the two cases also ...the size of bed material ...and ...
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Occurrence and Distribution of Marsh Clam, Polymesoda spp in Marudu Bay, Sabah, Malaysia
... Size distribution of P. erosa at the sampling sites is illustrated in Figure 5. The shell length of P. erosa ranged from 2.1 to 8.9 cm. The size distribution for P. erosa in all sites showed a bell shape ...
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A Literature Review on the Sediment Transport Process in Shallow Grade Culverts and Storm Sewers
... the sediment transport process in shallow grade culverts and storm ...the sediment deposition with high flow velocity to achieve ...erosion sediment transport equations have been developed as the ...
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Extreme flood event reconstruction spanning the last century in the El Bibane Lagoon (southeastern Tunisia): a multi-proxy approach
... Abstract. Climate models project that rising atmospheric carbon dioxide concentrations will increase the frequency and the severity of some extreme weather events. The flood events represent a major risk for populations ...
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Anthropogenic disturbance and spatial heterogeneity of macrobenthic invertebrate assemblages in coastal lagoons: the study case of Pialassa Baiona (northern Adriatic Sea)
... superficial sediment (0–5 cm horizon) was collected at each site using a hand corer sampler to analyse sand and silt–clay percentage, organic carbon content, pore water salinity and mercury ...near-surface ...
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Geology datasets in North America, Greenland and surrounding areas for use with ice sheet models
... of sediment properties that can be implemented into ice sheet modelling ...cluding sediment distribution, grain size and bedrock geol- ogy for the regions in North America, Greenland and ...
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Multi-scale quantification of leaching performance using X-ray tomography
... ogy, size and spatial distribution of the mineral grains within the particle are likely to have a large effect on the leach performance and its variability and thus, ultimately, the performance of the ...the ...
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SMALL GRAIN 11 Controls Grain Size, Grain Number and Grain Yield in Rice
... regulates grain size by promoting cell expansion in both grain-length and grain-width ...control grain size by regulating cell expansion have been reported in ...increased ...
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