Ph Graphs
The previous graphs compare the concentrations of the ph values measured in the same two stations sampled on the 15th, with the results of the analysis carried out on the 17th. The graphs show the station located nearest to the phenomenon (numbered as 2 and 5) and the one numbered as 1 and 4, corresponding to the station that apparently hasn´t been affected superficially on the 15th.
At the station 1 and 4 not affected initially, reflected yesterday (17th) a surface layer of similar characteristics and size to that of the affected area on the first day. In higher depths the core of the signal sinks while the range of depth affected increases.
In the stations 2 and 5 the structure of the upper surface layer is maintained, and some stratified layers appear with different thickness and intensity, affecting almost the entire water column. The absolute pH values found in the affected depth ranges are really low.
Turbidity graphs
The graphs showing the measured turbidity values are coincident in the distribution of the affected depth ranges, indicating the effect of the phenomenon.
The pH and turbidity values of the section at the stations from 5 through 8 move away from the affected area to the deep ocean, showing similar characteristics in the range from the surface up to 300m depth, presenting signs at depths over 500m. Its meaning should be valued as per its evolution in time. (In the case of turbidity, instrumental problems may arise at stations 6 and 7).
Ph and turbidity graphs at stations 5 and 8
Situation of the sampled stations.
