Dover Farm - Redox Potential - Mar 2022-Jul 2024

This dataset includes redox potential (mV) at 6 different depths from 4 redox probes each at the Delaware Agricultural site (Dover Farm) for the CZNet Coastal Cluster. Redox potential was measured continuously in the field at 15-minute intervals with SWAP Instrument ORP-120-B redox probes installed into the ground. The probes each have 6 platinum electrode sensors that measure soil redox potential at 5 cm, 15 cm, 25 cm, 35 cm, 45 cm, and 120 cm from the ground surface. Each probe was connected to a Campbell CR1000X datalogger with a SWAP Instrument REF-12-0-A Ag/AgCl reference electrode. The reference electrode was installed below the ground surface at a depth that was always in contact with groundwater. The reference probes were installed into capped PVC surrounded by a 3 M KCl gel with holes drilled at the bottom of the PVC for contact with the groundwater. Redox potential values were corrected to the standard hydrogen electrode value by adding +200 mV to the measured potentials. Due to regular replacement of external data logger batteries and data downloads, there may be gaps in the data.

本数据集收录了特拉华农业站（多弗农场）CZNet海岸集群内，4个氧化还原探针在6个不同深度处的氧化还原电位（毫伏）数据。氧化还原电位以每15分钟一次的频率，利用SWAP Instrument ORP-120-B氧化还原探针在野外进行连续测量。每个探针配备了6个铂电极传感器，用于测量距地表5厘米、15厘米、25厘米、35厘米、45厘米和120厘米处的土壤氧化还原电位。每个探针均连接至Campbell CR1000X数据记录仪，并配备SWAP Instrument REF-12-0-A Ag/AgCl参比电极。参比电极被安装在距地表以下，始终与地下水接触的深度。参比探针被安装于封顶的PVC管内，周围环绕着3 M KCl凝胶，并在PVC管底部钻孔以便与地下水接触。氧化还原电位值通过在测得电位上增加+200 mV来校正至标准氢电极值。鉴于外部数据记录仪电池的定期更换和数据下载，数据中可能存在空白。