Identification of groundwater emergence in a naturally bedded culvert in Conway, PA

This project focused on identifying groundwater seep locations and estimating flux rates of groundwater emerging into a 0.5 km reach of a naturally-bedded culvert confining a stream channel in an industrial area. Two steel-reinforced 1-cm diameter fiber optic cables were installed approximately 20 cm into streambed sediment in 4 transects along the length of the tunnel (See layout figure). The two fibers were connected a Silixa Ultima DTS Interrogator in a double-ended fashion, which collected temperature data from each of the four channels at 10 minute intervals. Data was collected Aug 18 – 31, 2020 and again January 9, 2021 to March 12, 2021.

Raw DTS data files available via Box: https://oregonstate.box.com/s/u6lnraus2ae9sehvkm5vkx6dz2sqs4va

本项研究聚焦于识别地下水渗流位置并估算地下水流入自然铺设的涵洞0.5公里段内的流量速率。在隧道长度方向上的四条横截面上，约20厘米深处安装了直径为1厘米的钢增强光纤电缆，共计两根（详见布局图）。这两根光纤以双端连接至Silixa Ultima DTS询问器，以10分钟为间隔收集每个通道的温度数据。数据收集时间分别为2020年8月18日至31日以及2021年1月9日至3月12日。

原始DTS数据文件可通过以下Box链接获取：https://oregonstate.box.com/s/u6lnraus2ae9sehvkm5vkx6dz2sqs4va