Hydrologic (discharge, level, pressure, voltage, electrical conductivity, and temperature) and atmospheric (pressure and temperature) data from injection experiments and a rain event at Bear Spring, MN, USA – June 10-12, 2016

We conducted water injection experiments at Bear Spring in southeastern Minnesota, USA, and we monitored responses from the experiments and a rain event (Bilek et al., 2023; Luhmann et al., in press). We injected water from a pool into the overflow spring and monitored hydrologic responses at the perennial spring. The experiments were conducted to monitor for seismic signals as water flows through the karst aquifer, and all corresponding seismic data are provided in Bilek (2016). The experiments confirmed that the overflow spring and perennial spring were connected by at least one conduit in the karst aquifer. The overflow spring was dry for the first two experiments, but it started flowing after a large rainfall event. Because the overflow spring was flowing during the third experiment, the water from the pool simply flowed across the overflow spring run instead of entering the conduit. The hydrologic data are provided that illustrate the response to the three injection experiments and the rain event. Information about the field site and the methods are described below.

本研究于美国明尼苏达州东南部的贝尔泉（Bear Spring）开展注水实验，并对实验过程及一场降雨事件的响应进行了监测（Bilek等，2023；Luhmann等，即将刊出）。本研究从储水池取水注入溢流泉（overflow spring），并对常年泉（perennial spring）的水文响应开展监测。实验旨在监测水流经喀斯特含水层（karst aquifer）时产生的地震信号，所有相关地震数据已收录于Bilek（2016）。实验结果证实，溢流泉与常年泉之间通过喀斯特含水层内至少一条导水通道（conduit）相连。在前两次实验期间，溢流泉处于干涸状态，但在一场强降雨事件后开始出水。由于第三次实验期间溢流泉已处于出水状态，储水池注入的水仅从溢流泉径流路径流过，并未进入导水通道。本数据集提供了反映三次注水实验及降雨事件响应的水文数据。研究区域概况与实验方法详见下文。