Virginia Forest- Redox Potential - Jun 2022-Jan 2024

This dataset includes redox potential (mV) at 5 different depths from 2 redox probes each at the Virginia Forest Site (Brownsville) 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 5 platinum electrode sensors that measure soil redox potential at 10 cm, 20 cm, 30 cm, 40 cm, and 115 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森林地（布朗斯维尔）CZNet沿海集群中，两个氧化还原探头在不同深度（共5个深度）测得的氧化还原电位（单位：毫伏）。氧化还原电位通过SWAP Instrument ORP-120-B探头在野外连续测量，测量间隔为15分钟。每个探头配备5个铂电极传感器，用于测量距地表10厘米、20厘米、30厘米、40厘米和115厘米处的土壤氧化还原电位。探头通过Campbell CR1000X数据记录仪与SWAP Instrument REF-12-0-A银/氯化银参考电极相连。参考电极安装在地下，始终与地下水保持接触。参考探头安装在密封的PVC管中，周围填充3 M氯化钾凝胶，并在PVC底部钻有孔洞以便与地下水接触。氧化还原电位值通过将测量值增加+200 mV以校正至标准氢电极值。由于外部数据记录仪电池的定期更换和数据下载，数据中可能存在间断。