Sediment trap time series data for Beaverdam Reservoir and Falling Creek Reservoir in southwestern Virginia, USA 2018 through 2023

Sediment traps were deployed to assess the mass and composition (lithium, sodium, magnesium, aluminum, potassium, calcium, iron, manganese, copper, strontium, barium, total organic carbon, and total nitrogen) of settling particulates in the water column of two drinking water reservoirs—Beaverdam Reservoir and Falling Creek Reservoir, both located in Vinton, Virginia, USA. Sediment traps were deployed at two depths in each reservoir to capture both epilimnetic and hypolimnetic (total) sediment flux. The particulates were collected from the traps approximately fortnightly from April to December from 2018 to 2023, then filtered, dried, and analyzed for lithium, sodium, magnesium, aluminum, potassium, calcium, iron, manganese, copper, strontium, and barium (2018 to 2023) and total organic carbon and total nitrogen (2018 to 2022, due to instrument repairs). Beaverdam and Falling Creek are owned and operated by the Western Virginia Water Authority as primary or secondary drinking water sources for Roanoke, Virginia.
The sediment trap dataset consists of logs detailing the sample filtering process, the mass of dried particulates from each filter, and the raw concentration data for lithium (Li), sodium (Na), magnesium (Mg), aluminum (Al), potassium (K), calcium (Ca), iron (Fe), manganese (Mn), copper (Cu), strontium (Sr), barium (Ba), total organic carbon (TOC) and total nitrogen (TN). The final products are the calculated downward fluxes of solid Li, Na, Mg, Al, K, Ca, Fe, Mn, Cu, Sr, Ba, TOC, and TN during the aforementioned deployment periods.

本研究布设沉积物捕集器，以评估两座饮用水水库水柱中沉降颗粒物的质量与组成。两座水库分别为比弗当水库（Beaverdam Reservoir）与福尔灵克里克水库（Falling Creek Reservoir），均位于美国弗吉尼亚州文顿（Vinton）。颗粒物组成涵盖锂（Lithium, Li）、钠（Sodium, Na）、镁（Magnesium, Mg）、铝（Aluminum, Al）、钾（Potassium, K）、钙（Calcium, Ca）、铁（Iron, Fe）、锰（Manganese, Mn）、铜（Copper, Cu）、锶（Strontium, Sr）、钡（Barium, Ba）、总有机碳（total organic carbon, TOC）以及总氮（total nitrogen, TN）。
沉积物捕集器在每座水库的两个深度点位布设，以分别捕获上层滞水层（epilimnetic）与下层滞水层（hypolimnetic）的沉积物总通量。2018年至2023年每年的4月至12月期间，研究人员约每两周从捕集器中采集一次颗粒物样本，随后对样本进行过滤、干燥处理，并针对相关指标开展分析：其中锂、钠、镁、铝、钾、钙、铁、锰、铜、锶、钡的检测时段为2018—2023年，总有机碳与总氮的检测时段为2018—2022年（因仪器维修暂停后续检测）。比弗当水库与福尔灵克里克水库由西弗吉尼亚水务管理局（Western Virginia Water Authority）所有并运营，作为弗吉尼亚州罗阿诺克（Roanoke）的一级或二级饮用水源。
本沉积物捕集器数据集包含多份日志，详细记录了样本过滤流程、每张滤膜上干燥颗粒物的干重，以及锂（Li）、钠（Na）、镁（Mg）、铝（Al）、钾（K）、钙（Ca）、铁（Fe）、锰（Mn）、铜（Cu）、锶（Sr）、钡（Ba）、总有机碳（TOC）和总氮（TN）的原始浓度数据。最终产出成果为上述布设周期内，固态锂、钠、镁、铝、钾、钙、铁、锰、铜、锶、钡、总有机碳及总氮的向下沉降通量计算结果。