RV CORYSTES 9A/2000 Low Resolution Conductivity-Temperature-Depth (CTD) Data

The data in this archive were collected from CEFAS (Or DFR) research cruises. They broadly cover the European Shelf with some data from the Iberian Abysal Plain. Data were collected using the lowered CTD rosette system which is used when the vessel is stationary. Usually bottles were fired at particular depths and samples taken for calibration. In early years only a limited set of parameters were collected. Notably Pressure (Depth), Temperature and Conductivity (CTD). From Conductivity Salinity can be calculated using the UNESCO 1978,1983 formulations . In subsequent years more sensors have been added, notably fluorometers, Optical back scatter or transmissometers and Light (PAR, photo synthetically available radiation). The exact configuration varies between cruises and this is reflected in the data format of the output files. Data was collected from research vessels on station, a profile from the surface to near the sea bed is undertaken. The down cast data should be a clean profile. Water bottles for sample collection and calibration are fired on the up cast.本档案中所收录的数据均源自 CEFAS（或 DFR）科研远征考察。这些数据广泛覆盖了欧洲大陆架，并包含来自伊比利亚深渊平原的部分数据。收集数据时采用了降低式 CTD 花瓣系统，该系统适用于船舶静止状态。通常在特定深度释放瓶体，以采集用于校准的样本。在早期年份，仅收集了有限的参数，尤其是压力（深度）、温度和电导率（CTD）。通过电导率，可以运用 UNESCO 1978 年和 1983 年的公式计算出盐度。在随后的年份中，添加了更多的传感器，尤其是荧光计、光学后向散射或透射仪以及光（光合有效辐射）。具体的配置在不同航次间有所差异，并在输出文件的格式数据中得到体现。在考察站点的科研船只上收集数据时，从海面到近海底进行剖面测量。下降过程中的数据应呈现为干净的剖面，而在上升过程中发射水瓶以进行样本收集和校准。