Cost-effective mini drive-point piezometers and multilevel samplers for monitoring the hyporheic zone
Cost-effective mini drive-point piezometers and multilevel samplers for monitoring the hyporheic zone
复制标题
用于监测潜流区的经济高效的迷你驱动点渗压计和多级采样器
DOI：
10.1144/1470-9236/07-012
复制
发表时间：
2008
影响因子：
1.4
通讯作者：
J. W. Dowle
中科院分区：
文献类型：
--
作者：
M. Rivett;Paul A. Ellis;R. Greswell;Rob Ward;R. S. Roche;M. G. Cleverly;M. G. Cleverly;C. Walker;C. Walker;D. Conran;D. Conran;P. J. Fitzgerald;P. J. Fitzgerald;T. Willcox;J. W. Dowle;J. W. Dowle
制定具有成本效益的方法来监测地下水-地表水-地表水交换过程和地下水区污染物的去向，从根本上巩固了诸如欧洲共同体水框架指令等立法的执行，该指令要求对地下水和地表水进行综合管理。提出了具有成本效益的小型驱动点压力计（MDP）和多级采样器（MLS），其使用廉价的建筑材料，涉及简单的制造和安装程序，并且具有经验证的耐用性，不易受洪水事件和故意破坏的影响。他们已被用于在英国的水文（地质）设置的范围，并证明是有效的识别流量交换，地球化学趋势，污染物的运输和衰减监测深度为0.25至2米，分辨率低至0.05米。深度剖面，跨河流横断面和河流到达纵向剖面从河驯服集水区（西米德兰兹，英国）说明MDP-MLS方法在建立地表水-地下水混合区深度，污染物自然衰减作为一个结果，在潜流区的生物活动，地下水和地表水之间的污染物通量交换的估计值。MDP-MLS方法允许识别受污染的地下水羽流排放，如果仅仅依赖于传统的滨江监测威尔斯和/或地表水采样，则可能无法检测到，或者充其量只能很好地解决。所描述的MDP-MLS方法也有可能用于调查浅沉积物含水层，湖泊岸线和湿地特征。
The development of cost-effective approaches to monitor groundwater–surface-water exchange processes and contaminant fate within the hyporheic zone fundamentally underpins implementation of legislation such as the European Community Water Framework Directive, which requires integrated management of groundwater and surface water. Cost-effective mini drive-point piezometers (MDPs) and multilevel samplers (MLSs) are presented that use cheap construction materials, involve simple fabrication and installation procedures, and have a proven durability with low vulnerability to flood events and vandalism. They have been used across a range of hydro(geo)logical settings in the UK and proven to be effective in discerning flow exchange, geochemical trends, and contaminant transport and attenuation over monitored depths of 0.25 to 2 m at a resolution as low as 0.05 m. Example depth profiles, cross-river transects and river-reach longitudinal profiles from the River Tame catchment (West Midlands, UK) illustrate the value of MDP–MLS approaches in establishing surface-water–groundwater mixing zone depths, contaminant natural attenuation as a result of biotic activity within the hyporheic zone, and estimates of contaminant flux exchanges between groundwater and surface water. The MDP–MLS approaches allow discernment of contaminated groundwater plume discharges that may go undetected, or at best poorly resolved, if reliance was solely placed on conventional riverside monitoring wells and/or surface-water sampling. The MDP–MLS approaches described also have potential to be used in the investigation of shallow sediment aquifers, lake shorelines and wetland features.