RV CORYSTES 09/1997 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.

本档案中的数据来源于 CEFAS（或 DFR）的科研巡航。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部分数据。数据采集采用了在船舶静止时使用的降低式 CTD 罗塞特系统。通常在特定深度释放瓶盖，并采集样品以进行校准。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）。通过电导率，可以运用 UNESCO 1978 年和 1983 年的公式计算盐度。在随后的年份中，添加了更多传感器，尤其是荧光计、光学后向散射或透射计以及光（叶绿素a荧光、光合有效辐射）。具体的配置因巡航而异，这在输出文件的数据格式中得到了体现。数据是在站点上的研究船只上采集的，从海面到近海底进行剖面调查。下降的数据应是一条干净的剖面曲线。用于样品采集和校准的水瓶在上升过程中被发射。