Maisbich (Luxemburg) river basin discharge data, sensor Q4, month 2009-10

Parent item: Maisbich (Luxemburg), data from discharge meter Q4 (Qup), 2006-12 and later Measuring instrument: Maisbich basin: V-notch discharge meter Q4 (Qup) Type: Van Essen TD-Driver, SN 19613 This instrument measures pressure with one absolute sensor. It also measures temperature. Height V-notch above sensor: 0.0018m. Datasets with correction contain the corrected discharge observed at the Vnotch. The discharge is calculated as Q=Cd*h^2.5 After correcting the logger measurements with hand measured depths we interpolated the difference (dH) Then we determined the factor Cd with discharge measurements which we also interpolated The timing of hand measurements can be corrected to better represent the logged values The last corrections (variable "clean_corr") were made for blocking of the V-notch weir as folows: z1 represents the last good discharge value after which sedimentation slowly starts blocking the weir z2 represents the moment when the blocking is max z3 represents the moment just before cleaning of the weir z4 represents the moment after cleaning of the weir The max difference in discharge is Q(z3)-Q(z4)

父项：迈斯比希（Maisbich，卢森堡），2006年12月及之后的Q4（Qup）流量计数据。
测量仪器：迈斯比希槽（Maisbich basin）配套的V型缺口（V-notch）流量计Q4（Qup），型号为Van Essen TD-Driver，序列号SN 19613。
该仪器采用绝对压力传感器测量压力，同时可同步测量温度。传感器上方的V型缺口高度为0.0018米。
带校正项的数据集包含经校正的V型缺口流量实测值，流量计算公式为Q=Cd*h^2.5。
在将手动测量的水深与自动记录仪的测量数据完成校正后，我们对差值（dH）进行了插值处理。随后通过经插值的流量测量数据，确定了流量系数Cd。可对手动测量的时间进行校正，以更准确地匹配自动记录仪的实测记录。
针对V型缺口堰的堵塞情况，我们完成了最终校正（对应变量为"clean_corr"），具体定义如下：
z1代表沉积物开始缓慢堵塞堰体后的最后一组有效流量值；
z2代表堰体堵塞程度达到最大的时刻；
z3代表堰体清理前的临界时刻；
z4代表堰体清理完成后的时刻。
流量的最大差值为Q(z3)-Q(z4)