New Field Method to Determine Streamflow Timing Using Electrical Resistance Sensors
New Field Method to Determine Streamflow Timing Using Electrical Resistance Sensors
复制标题
使用电阻传感器确定水流计时的新现场方法
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
J. P. Hoffmann
中科院分区：
文献类型：
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作者：
K. Blasch;T. Ferré;A. Christensen;J. P. Hoffmann
构建电阻（ER）传感器来监测河床饱和度，以推断短暂的水流时间。通过与基于温度的方法、流量计和土壤含水量传感器进行比较，在短暂的流中对传感器进行了评估。 ER 传感器在估计水流时间方面更准确，并且与基于温度的方法获得的数据相比，所得数据所需的解释更少。精度相当于使用流量计和土壤含水量测量的计时方法。 ER 传感器非常适合在短暂的河道中使用，因为它们价格便宜，可部署在沉积物表面上方或下方，对深度不敏感，并且不需要将电线连接到外部数据记录器或电源。根据这些结果，我们得出结论，ER 传感器可用于监测包气带内土壤含水量的变化。此外，传感器还可用于推断引水渠、雨水下水道中以及地表径流中是否存在地表水。
Electrical resistance (ER) sensors were constructed to monitor streambed saturation to infer ephemeral streamflow timing. The sensors were evaluated in an ephemeral stream through comparison with temperature‐based methods, a stream gauge, and soil water content sensors. The ER sensors were more accurate at estimating streamflow timing and the resultant data required less interpretation than data from temperature‐based methods. Accuracy was equivalent to timing methods using stream gauge and soil water content measurements. The ER sensors are advantageous for use in ephemeral stream channels because they are inexpensive, deployable above or below the sediment surface, insensitive to depth, and do not require connecting wires to an external datalogger or power source. On the basis of these results, we conclude that ER sensors may be used to monitor changes in soil water content within the vadose zone. Additionally, the sensors can be used to infer the presence of surface water in diversion canals, storm‐water sewers, and in the form of overland runoff.