Sediment trap (Kiel 21- trap, KUM) particle flux measurements, Gulf of Mexico, August 2010 to October 2011

Sedimentation rates at (28º 42.55N, 88º 25.34W) at about 1500m depth, 120 m above the seafloor between August 2010 and October 2011. A funnel shaped time series sediment trap (Kiel 21- trap, KUM) with a collection area of 0.5 m^2 was used to measure flux of particles about seven km SW of the Deepwater Horizon well in twenty 21-day intervals. Sinking material was fixed in-situ with mercuric chloride in a salinity gradient (40 PSU). After retrieving the trap, samples were examined microscopically (phytoplankton and foraminifera flux), analyzed for dry mass, inorganic matter, particulate organic and inorganic carbon (POC & PIC), organic nitrogen, biogenic silica, transparent exopolymer particles, barium, aluminum, and iron. Sample aliquots were processed by colleagues (Chanton, Yan) for stable isotopes (R4.x268.186:0003) and diverse oil markers (R4.x268.184:0006).本数据集包含2010年8月至2011年10月期间，北纬28°42.55′、西经88°25.34′、水深约1500米（距海底120米）处的沉积速率观测数据。研究采用收集面积为0.5平方米的漏斗式时间序列沉积物捕获器（funnel shaped time series sediment trap，Kiel 21型捕获器，KUM），在深水地平线（Deepwater Horizon）油井西南约7公里处，以21天为一个采样周期，累计开展20次采样以测定颗粒物质通量。沉降物质采用盐度为40实用盐度单位（PSU）的氯化汞溶液进行原位固定。回收捕获器后，研究人员对样品开展了显微镜观测（用于分析浮游植物与有孔虫通量），并检测了干重、无机质、颗粒态有机碳与无机碳（POC & PIC）、有机氮、生物硅、透明胞外聚合物颗粒、钡、铝及铁元素含量。部分样品分样由合作者Chanton与Yan完成了稳定同位素（R4.x268.186:0003）及多种油类标志物（R4.x268.184:0006）的检测分析。