Metompkin Farm - Redox Potential - Jul 2022-Jul 2024

This dataset includes redox potential (mV) at 6 different depths from 2 redox probes each at the Virginia Agricultural site (Metompkin 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.

本数据集收录了弗吉尼亚农业站（Metompkin农场）CZNet海岸集群中，两个氧化还原探针在6个不同深度（mV）处的氧化还原电位。氧化还原电位采用SWAP Instrument ORP-120-B氧化还原探针，以15分钟为间隔连续在野外进行测量。每个探针配备6个铂电极传感器，能够测量从地表起5 cm、15 cm、25 cm、35 cm、45 cm和120 cm深度的土壤氧化还原电位。每个探针与Campbell CR1000X数据记录器相连，并安装有SWAP Instrument REF-12-0-A Ag/AgCl参比电极。参比电极被安装在地表以下，确保始终与地下水保持接触。参比探针被安置于封顶的PVC管中，周围环绕着3 M KCl凝胶，并在PVC管的底部钻有孔洞以与地下水接触。氧化还原电位值通过在测得电位上加上+200 mV来校正至标准氢电极值。由于外部数据记录器电池的定期更换和数据下载，数据中可能存在空白。