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13 results for “sediment load”
Water quality data (River sediment, Nitrogen and Phosphorus loads) for Africa
<p>Output data on African water quality and scripts for preprint - "One third of African rivers fail to meet the 'good ambient water quality' nutrient targets" at <a href="https://dx.doi.org/10.2139/ssrn.4829742">https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4829742</a> . Please check the readme file for data description. The data includes river flow, sediment load, nitrogen and Phosphorus loads for Africa at daily and yearly time scale. This work is currently under review in Ecological Indicators journal. </p>
Spatiotemporal variation in internal phosphorus loading, sediment characteristics, water column chemistry, and thermal mixing in a hypereutrophic reservoir in southwest Iowa, USA (2019-2020)
The primary aim of the data product is to quantify seasonal and spatial variation in sediment phosphorus fluxes in a temperate reservoir and evaluate mechanisms responsible for instances of elevated sediment phosphorus release. We studied Green Valley Lake, a hypereutrophic reservoir in southwest Iowa, USA, from 2019 to 2020. We measured sediment phosphorus flux rates and potential explanatory variables at three sites along the longitudinal gradient of the reservoir over six sampling events during winter and summer stratification as well as mixing events in the spring, summer, and fall. Ex situ sediment core incubations were used to measure sediment P release rates under ambient temperature and dissolved oxygen conditions. Explanatory variables measured included sediment phosphorus chemistry, sediment physical characteristics, epilimnetic and hypolimnetic nutrient concentrations, and thermal stratification patterns. These data will be used to identify mechanisms driving hot spots and hot moments of sediment phosphorus release, which will contribute to our understanding of how areas of lakebed and times of the year can disproportionately influence whole-lake water chemistry.
supplymentary for sediment load forecasting
<p>Forecasting results of sediment load from stations along the mainstream and different tributaries; Bayesian inference code to forecast sediment load</p>
Suspended sediment load and bedload flux from the Glacier d'Otemma proglacial forefield (summers 2020 and 2021)
<p>The Glacier d’Otemma proglacial margin, located in the Swiss Alps at an altitude of about 2450 m a.s.l. (45.93423 N, 7.41160 E), is characterized by a ca. 1 km long by 200 m wide active braided forefield. In this setting we installed two gauging stations for the monitoring of both suspended sediment and bedload transport within the proglacial margin: GS1 at about 350 m from the glacier terminus and GS2 at the forefield outlet.</p> <p>Monitoring stations were equipped with water pressure sensors (CS451 from Cambell Scientific), turbidity probes (OBS300+ from Cambell Scientific) and geophones (3-components PE-6/B from Sensor Nederland connected to a DiGOS DATA-CUBE type 2 logger). Water discharge were determined following modalities described in Müller and Miesen (2022). Suspended loads were quantified using a conventional turbidity-suspended sediment concentration relationship, while bedload transport was derived seismically using the geophysical Fluvial model inversion (FMI) algorithm developed in Dietze et al. (2018). The dataset covers summers 2020 and 2021.</p> <p> Further details on data aquisition and post-processing techniques are available in Mancini et al. (2023).</p>
Combined data file for Jilbert et al. "Anthropogenic Inputs of Terrestrial Organic Matter Influence Carbon Loading and Methanogenesis in Coastal Baltic Sea Sediments", Frontiers in Earth Science 9, 2021
<p>The datafile contains all the new raw data presented in the figures in the publication.</p>
Data of sediment load in Yangtze River basin
<p>Time series of annual sediment load(Mt/yr) at the 13 key gauging stations in the Yangtze River basin during 1970–2017</p>
Relative roles of sediment transport and localized erosion on phosphorus load in the lower Susquehanna River and its mouth in the Chesapeake Bay, USA
<p>Data set includes average wind and wave conditions for the mouth of the Susquehanna River that were used to calculate normal and storm conditions; turbidity measurements at each site; mass of particulate matter from water column and erosion experiments; inorganic phosphate from sequential extraction of particulate matter in water column, sediment, and erosion experiments; and δ<sup>15</sup>N, δ<sup>13</sup>C, and C:N ratios of particulate matter from the water column and from erosion experiments.</p>
Supporting data tables and Python scripts for the paper: "Multi Grain-Size Total Sediment Load Model Based on the Disequilibrium Length"
<p>This repository contains all the data tables and Python scripts necessary to generate the results presented in Le Minor et al. (2022): "Multi Grain-Size Total Sediment Load Model Based on the Disequilibrium Length".</p>
Increased sediment load destabilize algal turf at two different fringing reefs; Evaluating responses across a stress gradient, Moorea, French Polynesia, 2016
Seven reefs in Moorea French Polynesia were examined for sediment and turf characteristics to establish a baseline for naturally occurring proportions of sediment within the turf matrix. At each of the seven sites turf filament heights and sediment depths within the turf matrix were measured using a galvanized mesh measuring device calibrated by 1mm increments. All surveys were conducted between 2-3m in depth between April-May of 2016. We then conducted a two-factor experiment where sediment depth was manipulated at two sites surveyed with strong differences in turf communities (Maharepa and Gump). Our experiment ran for 30 days, with sediment treatments maintained every four days.
Assessing the Risk of Internal Loading of Phosphorus from Drinking Reservoir Sediments
<p><span>The natural process of lake and reservoir eutrophication through nutrient accumulation within sediments has been accelerated through anthropogenic sources of nitrogen and, especially, phosphorus (P). Stored nutrients can result in significant internal loading (during periods of low sediment redox potential or elevated pH) which may drive poor water quality despite best practice in catchment management. Internal P loading can promote proliferation of cyanobacterial and algal taxa responsible for Harmful Algal Blooms (HABs) as well as Taste and Odour (T&O) and cyanotoxin events. Here, we investigate the sediment and water column P content of eight reservoirs, by analysing </span><span>iron-bound (Fe-P), calcium-bound (Ca-P) and labile P fractions. </span></p>
Data from: Changes in the location of biodiversity–ecosystem function hot spots across the seafloor landscape with increasing sediment nutrient loading
Open the record for dataset details and reuse information.
Chapter 3. Contrasting methane, sulfide, and nitrogen loading regimes in bioreactors shape microbial communities originating from methane-rich coastal sediment of the Stockholm Archipelago
<p>Supplementary Tables 1 to 7.</p> <p> </p>
Organic matter loading modifies the microbial community responsible for nitrogen loss in estuarine sediments
GEO Series GSE65430. synthetic construct; aquatic metagenome. 4 samples. Type: Other.
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OpenNeuro
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