Groundwater level elevation and temperature data, Oct 2018-Dec 2021, Slate River Floodplain, Crested Butte, CO

This data package includes a time series of water level and temperature measurements from October 2018 to December 2021 in groundwater and surface water from the Slate River floodplain outside Crested Butte, CO, a focus field site for the SLAC Floodplain Hydro-Biogeochemistry SFA. The data was generated as part of the work targeting the overarching research question for the SLAC SFA: How do ubiquitous subsurface interfaces mediate molecular-scale biogeochemical processes and groundwater quality in floodplains and watersheds? The data were recorded by pressure transducers were installed in four types of piezometers: 1) a network of gravel bed ("GB") drive-point piezometers with a 6-inch screen interval installed all at ~330 cm below ground surface. 2) a network of piezometers screened across the water table, used to measure evapotranspiration ("ET") using the White method. Each of these piezometers is screened along almost its entire length. 3) a suite nested piezometers used the measure the vertical hydraulic gradient ("VHG") across the fines-cobble interface. Each of these piezometers uses a 6-inch screen length. 4) a group of piezometers scattered across the boundaries of the floodplain, used to monitor boundary conditions ("BC") flowing into and out of the floodplain. With the exception of "SR-BD-WT", each of these piezometers is screened along its entire length. Within the data package, "FLMD.csv" describes file-level metadata and "dd.csv" defines column headers and universal terms across the dataset. The data package includes 11 "*data.csv" files, one for each piezometer type for each calendar year. Because piezometers have been added over time, not every sensor has data dating back to Oct 2018. Each "*data.csv" file has a corresponding "*_InstallationMethods.csv" file that describes the location, elevation, screen depth, sediment type and sensor metadata for each piezometer and pressure transducer.

本数据集包含2018年10月至2021年12月期间，科罗拉多州克雷斯特德比特市郊外斯莱特河漫滩的地下水与地表水水位及温度时序监测数据，该区域是SLAC漫滩水文生物地球化学科学聚焦区（SLAC Floodplain Hydro-Biogeochemistry SFA）的核心野外研究站点。本数据集依托该科学聚焦区的核心研究问题生成，其研究主题为：普遍存在的地下界面如何调控漫滩与流域内的分子尺度生物地球化学过程及地下水水质？监测数据由安装在四类测压管中的压力传感器记录：1. 砾石床（gravel bed, GB）打入式测压管阵列：滤段长度为6英寸，全部布设于地表以下约330厘米处；2. 横跨潜水面布设滤段的测压管阵列：采用怀特法（White method）估算蒸散发（evapotranspiration, ET），此类测压管的滤段几乎覆盖其全长；3. 嵌套式测压管组：用于监测细粒-砾石界面的垂向水力梯度（vertical hydraulic gradient, VHG），每支测压管的滤段长度均为6英寸；4. 分布于漫滩边界的测压管组：用于监测漫滩的入流与出流边界条件（boundary conditions, BC）。除"SR-BD-WT"外，此类测压管的滤段均覆盖其全长。本数据集中，"FLMD.csv"用于描述文件级元数据，"dd.csv"则定义了数据集内的列标题与通用术语。本数据集共包含11个"*data.csv"文件，对应每个日历年的每一类测压管。由于测压管是随时间陆续布设的，并非所有传感器都拥有2018年10月起的完整监测数据。每个"*data.csv"文件均配有对应的"*_InstallationMethods.csv"文件，用于记录每支测压管与压力传感器的布设位置、高程、滤段深度、沉积物类型及传感器元数据。