Bay of Brest, Brittany, France

Light absorption in the water column; Temperature of the water column; Visible waveband radiance and irradiance measurements in the water column

Radiometers; water pressure sensors; water temperature sensor

These seabed and sea surface light data were collected in the Bay of Brest, Brittany, France, in 2011-2012. R.V. Albert Lucas and smaller vessels were used for deployment and recovery of the seabed light sensor instrumentation. Corresponding time series records of seabed and sea surface irradiance were collected. Water depth above, and water temperature at the position of the sensor were also recorded. The data were collected as part of a project studying the effect of tidal variations in water depth and clarity on the light that reaches the seabed (Roberts et al., 2014; Roberts, 2015). They were collected by Bangor University scientists (primarily E.M. Roberts), assisted by contacts at the Centre d'Etudes Techniques Maritimes et Fluviales (CETMEF, now Cerema) and the Institut Universitaire Europeen de al Mer (IUEM).

Roberts, E.M. (2015) Tidal modulation of seabed light and its implications for benthic algae. Ph.D. Thesis. Bangor University., ; Roberts, E.M., Bowers, D.G., Davies, A.J. (2014) Springs-neaps cycles in daily total seabed light: Daylength-induced changes. Journal of Marine Systems, 132, 116-129,

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