Alkalinity, organic carbon, nitrogen, and major anions for Dead Run, Baltimore County, MD USA

This resource includes stream chemistry for Dead Run, Baltimore County, Maryland. This data set is part of the Urban Critical Zone Cluster in the NSF Critical Zone Collaborative Network. Stream grab samples are collected biweekly and analyzed for alkalinity, total organic carbon, dissolved organic carbon, total nitrogen, total dissolved nitrogen, bromide, chloride, fluoride, nitrate-nitrogen, nitrite-nitrogen, orthophosphate phosphorous, and sulfate. Stream sampling sites are co-located with USGS stream gaging stations 01589315 (DR4), 01589312 (DR5), and 01589330 (DRKR). Data are collected for the purpose of (1) trend analysis as a function of space and time; (2) evaluation of the effects of regional geology, anthropogenic perturbations, and weathering processes on stream chemistry; and (3) comparison with stream chemistry from other sites in the Urban CZ cluster.本数据集涵盖美国马里兰州巴尔的摩县死溪（Dead Run）的河流水化学数据，隶属于美国国家科学基金会（National Science Foundation, NSF）关键带（Critical Zone）协同网络下设的城市关键带集群。研究人员每两周采集一次河道瞬时水样，对其中的碱度、总有机碳、溶解态有机碳、总氮、总溶解态氮、溴化物、氯化物、氟化物、硝态氮、亚硝态氮、正磷酸态磷及硫酸盐开展分析检测。河道采样点位与美国地质调查局（United States Geological Survey, USGS）的01589315号（DR4）、01589312号（DR5）及01589330号（DRKR）河道测流站重合布设。本数据集的采集目标包括：（1）开展河流水化学的时空变化趋势分析；（2）评估区域地质、人为扰动及风化作用过程对河流水化学特征的影响；（3）与城市关键带集群内其他站点的河流水化学数据开展对比研究。