气候变化领域集成服务门户(CCPortal): River Esk distributed fine sediment fluxes

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.867534
	River Esk distributed fine sediment fluxes
	Perks; Matthew T; Warburton; Jeff
发布日期	2016-11-04
数据集类型	dataset
英文简介	Under the EU Water Framework Directive, suspended sediment is omitted from environmental quality standards and compliance targets. This omission is partly explained by difficulties in assessing the complex dose-response of ecological communities. But equally, it is hindered by a lack of spatially distributed estimates of suspended sediment variability across catchments. In this paper, we demonstrate the inability of traditional, discrete sampling campaigns for assessing exposure to fine sediment. Sampling frequencies based on Environmental Quality Standard protocols, whilst reflecting typical manual sampling constraints, are unable to determine the magnitude of sediment exposure with an acceptable level of precision. Deviations from actual concentrations range between -35 and +20% based on the interquartile range of simulations. As an alternative, we assess the value of low-cost, suspended sediment sampling networks for quantifying suspended sediment transfer. In this study of the 362 km2 upland Esk catchment we observe spatial patterns of sediment flux are consistent over the two year monitoring period, highlighting key contributing sub-catchments (e.g. Butter Beck - 1141 t/km2/yr and Glaisdale Beck - 841 t/km**2/yr). The time-integrated samplers offer a feasible alternative to traditional infrequent and discrete sampling approaches for assessing spatio-temporal changes in contamination. In conjunction with a spatially distributed diffuse pollution model (SCIMAP), time-integrated sediment sampling is an effective means of identifying critical sediment source areas in the catchment, which can better inform sediment management strategies for pollution prevention and control.
空间范围	Median Latitude: 54.459582 * Median Longitude: -0.863256 * South-bound Latitude: 54.438346 * West-bound Longitude: -0.896643 * North-bound Latitude: 54.464891 * East-bound Longitude: -0.729707
时间范围	2007-01-01T00:00:00 - 2010-12-31T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215379
推荐引用方式 GB/T 7714	Perks,Matthew T,Warburton,et al. River Esk distributed fine sediment fluxes.2016-11-04.https://doi.org/10.1594/PANGAEA.867534.