Daily cycles on this graph [1] and oxygen surplus can be explained by hyperactivity of organisms that do photosynthesis - cyanobacteries and algae.
Something boosted their activity. It might be natural, caused by high temperature very low level of water. Might be because someone contaminated the river with something that worked as fertilizer.
Daily cycles on this graph [1] and oxygen surplus can be explained by hyperactivity of organisms that do photosynthesis - cyanobacteries and algae. Something boosted their activity. It might be natural, caused by high temperature very low level of water. Might be because someone contaminated the river with something that worked as fertilizer.
[1] https://nitter.it/pic/orig/enc/bWVkaWEvRmFDNl9EeVgwQUFRNmpRL...