RV CORYSTES 2A/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 Abyssal
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.

本档案中的数据源自 CEFAS（或 DFR）科研航次收集。这些数据广泛覆盖了欧洲大陆架，并包含伊比利亚海盆的一些数据。数据采集采用了降低式CTD罗塞特系统，该系统适用于船舶静止时使用。通常在特定深度释放瓶体进行采样，以进行校准。早期年份仅收集了有限参数，特别是压力（深度）、温度和电导率（CTD）。通过电导率，可利用 UNESCO 1978 年和 1983 年的公式计算盐度。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（叶绿素荧光、光合有效辐射）。具体的配置因航次而异，这也在输出文件的格式中得到了体现。数据是在科研船舶驻站时采集的，从海面至近海底进行剖面调查。下投数据应为干净的剖面，上投时释放水样瓶进行采样和校准。