2012-2014 sedimentation data for the Congaree River floodplain, SC, USA

This dataset contains sedimentation data that was collected for the Congaree River floodplain, SC, USA. The study sites were located at floodplain positions with varying flood frequencies and geomorphic positions. Flood frequency was determined using hydrological statistics based on data acquired from USGS gage #02169500 for the Congaree River; sites are classified as having high, intermediate, or low flood frequency. The geomorphic position classification was determined using field observations; sites are classified as abandoned channel, ridge, river margin, and swale positions. Sediment deposition was measured in centimeters and reflects the amount of sediment that was deposited on a feldspar clay pad that was installed at each of the sampling sites. The feldspar pads were installed in the summer of 2012 and cored and measured for deposition amounts in the summer of 2014. In the summer of 2012, soil samples were collected at each of the sampling sites. Each soil sample was analyzed for soil texture (percent sand, silt, and clay), major and micro-nutrients (parts per million), percent organic matter, and pH.

本数据集包含采集自美国南卡罗来纳州康加里河泛滥平原的沉积数据。研究样地设置在洪水频率与地貌位置各异的泛滥平原点位。洪水频率基于美国地质调查局（USGS）编号为#02169500的康加里河水文站获取的观测数据，通过水文统计方法确定；样地按洪水频率划分为高、中、低三类。地貌位置分类通过野外实地观测完成，样地分为废弃河道、脊状高地、河岸边缘与洼地四类点位。沉积量以厘米为单位计量，反映了各采样点安装的长石黏土垫上的沉积泥沙总量。该类长石黏土垫于2012年夏季布设，并于2014年夏季通过取芯法测量其沉积量。2012年夏季，研究团队同时在各采样点采集了土壤样本。对每份土壤样本均开展了土壤质地分析（含砂粒、粉粒与黏粒占比）、大量与微量营养素含量检测（单位：百万分之一）、有机质占比测定以及pH值分析。