Grain size analysis of the Northeast Greenland (NEG) shelf sediments from POLARSTERN cruise PS109

Samples for granulometry analyses on the Northeast Greenland shelf have been collected with R/V Polarstern during PS109 between September and October 2017 using a camera-equipped multiple corer (TV-MUC; core area 0.007 m²). Upon arrival on deck, the upper 5 cm of three MUC cores were sliced into 1 cm intervals, using a cut-off syringe in order to get a depth resolution of the grain size distribution, and stored in 20 ml scintillation vials or plastic bags. In the laboratory, the grain size spectra were then assessed by laser diffraction (Malvern Instruments, Malvern, UK).2017年9月至10月期间，执行PS109航次的‘极星号’（R/V Polarstern）科考船，采用配备摄像系统的多管取样器（multiple corer，TV-MUC；取样芯面积0.007 m²），于格陵兰东北大陆架海域采集了用于粒度分析（granulometry analyses）的沉积物样品。样品吊运至甲板后，研究人员使用截切注射器将3根多管取样芯的上部5 cm沉积物以1 cm为间隔切片，以获取粒度分布的深度分辨率，并将切片后的样品分装至20 ml闪烁瓶（scintillation vials）或塑料袋中储存。实验室阶段，研究人员通过激光衍射法（laser diffraction）完成了粒度谱的测定，所用仪器产自英国马尔文市的马尔文仪器公司（Malvern Instruments）。