Monie Bay - DTW, Water Temperature, Specific conductance - Mar 2021-Jul 2024

This dataset includes depth to water (m, from ground surface), water temperature (degrees C) and specific conductance (uS/cm) measurements from four monitoring wells at the Maryland Forested site (Monie Bay) for the CZNet Coastal Cluster. Pressure, temperature and electrical conductivity were measured continuously in the field at 15-minute intervals with Solinst Levelogger 5 Model 3001s installed in each monitoring well. The Leveloggers were attached to a nylon cord and installed at the approximate depth of the well screen mid-point. Depth to water measurements were converted from Levelogger-measured pressure values. Pressure values were corrected for barometric pressure fluctuations and converted to depth to water values using reference manual depth to water measurements collected at the start and stop of each Levelogger deployment. No correction was done to the temperature values. Specific conductance values were calculated from Levelogger-measured electrical conductivity using the equation given by Standard Method 2510B. Between deployments, each Levelogger was submerged in a calibration solution with a known SC and the real-time reading was recorded. If the real-time reading was +/-5% of the calibration solution concentration, the sensor was calibrated according to manufacturer specifications. SC values were adjusted for sensor drift by adding a correction factor to the sensor-measured value. Leveloggers were occasionally swapped between wells to allow for sensor maintenance and calibration. Because the Leveloggers were periodically stopped to download data before being redeployed, there may be gaps in the record between deployments.

本数据集收录了马里兰州森林地区（莫尼湾）四个监测井的地下水深度（米，自地表起）、水温（摄氏度）以及比电导率（微西门子/厘米）的测量数据，属于CZNet海岸集群的一部分。压力、温度及电导率通过安装于各监测井中的Solinst Levelogger 5型3001s设备，以15分钟为间隔连续在野外进行测量。Levelogger设备连接尼龙绳并固定于井筛中点附近。地下水深度测量值由Levelogger测得的压力值转换而来。压力值经过气压波动校正，并参照Levelogger部署开始和结束时的参考手动深度测量值转换为地下水深度值。温度值未经校正。比电导率值通过应用标准方法2510B中给出的公式，由Levelogger测得的电导率计算得出。在部署期间，每个Levelogger被浸泡在已知比电导率的校准溶液中，并记录实时读数。如果实时读数与校准溶液浓度相差±5%，则根据制造商规范对传感器进行校准。比电导率值通过向传感器测量值添加校正因子进行调整，以补偿传感器漂移。Levelogger设备偶尔在井之间交换，以便进行传感器维护和校准。由于Levelogger在重新部署前需要定期停止以下载数据，因此记录之间可能存在空缺。