RV CORYSTES 13/1993 High 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源自 CEFAS（或 DFR）的研究航行。这些数据广泛覆盖了欧洲大陆架，并包含来自伊比利亚海盆的一些数据。数据收集采用下沉式CTD罗盘系统，该系统适用于船舶静止时使用。通常在特定深度处释放瓶体，以采集用于校准的样本。在早期年份，仅收集了有限的参数，特别是压力（深度）、温度和电导率（CTD）。根据 UNESCO 1978 年和 1983 年的公式，可以利用电导率计算出盐度。在随后的年份中，增加了更多传感器，特别是荧光计、光学后向散射或透射计以及光照（包括光合有效辐射）。具体的配置因航行而异，并在输出文件的数据格式中得到体现。数据是从在站研究船采集的，从海面到近海底的剖面数据被获取。下沉数据应是一条干净的剖面曲线，而用于样本收集和校准的水瓶则在上浮时释放。