2013-2014 NOAA CTD data and sediment trace metals

This dataset has CTD and positional data from sediment grabs taken on the NOAA ship Pisces (2013) and Gordon Gunter (2014). Two shoreline collections from Louisiana and Alabama are included in the 2014 data. All sediment grabs on the NOAA cruises were made with a multicorer, unless a Shipek (R) grab is indicated. Samples from the multicorer tubes or the Shipek grab were subsampled to a depth of 5 cm. The two shoreline collections were taken to a depth of 25cm (Slidell Louisiana, shovel collection) or to a depth of 5cm (Dauphin Island, hand core). Sediment samples were sent to the Louisiana State University Ag center, where trace metals determination was made using EPA method 200.7.

本数据集包含美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration，NOAA）“双鱼座号”（2013年）与“戈登·冈特号”（2014年）科考船采集沉积物抓斗样品所附带的温盐深剖面仪（Conductivity Temperature Depth，CTD）数据与位置数据。2014年的数据集还包含两份分别采自路易斯安那州与阿拉巴马州的岸线沉积物样本。本次NOAA科考航次中所有沉积物抓斗取样作业均采用多管取样器（multicorer），仅当标注有“希佩克（Shipek®）抓斗”时例外。从多管取样器管样或希佩克抓斗样品中，均截取表层5厘米深度的子样本。两份岸线沉积物样本的取样深度分别为25厘米（路易斯安那州斯莱德尔地区，铲式取样）与5厘米（阿拉巴马州多芬岛，手持岩芯取样）。所有沉积物样本均被送往路易斯安那州立大学农业中心，采用美国环境保护署（Environmental Protection Agency，EPA）200.7号方法完成痕量金属含量测定。