RV CORYSTES 09/1993 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.

本档案中的数据源自 CEFAS（或 DFR）的科研航次采集。该数据集广泛覆盖了欧洲大陆架，并包含伊比利亚海盆的一些数据。数据采集采用了降下的CTD罗盘系统，该系统在船舶静止时使用。通常在特定深度释放瓶体以采集样本进行校准。在早期，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，可利用 UNESCO 1978、1983年的公式计算出盐度。在随后的年份中，增加了更多的传感器，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，并在输出文件的数据格式中得到体现。在站点附近的科研船舶上采集了数据，从海面到近海底进行剖面调查。下降段的数据应呈现为干净的剖面。用于样本采集和校准的水瓶在上升段释放。