The most present gas in the bottom sediments is methane, as the product of the anaerobic degradation of organic matter. In many cases (Baltic Sea) the eutrophication is caused by anthropogenic factors, what is not exposed due to political reasons. Acoustics gives us the most effective ways to observe the whole process of production and the ebullition of the methane from the seabed. Due to high difference of the acoustic impedance of the gas and the water the gas bubbles are easily detected by the echo-sounder. The whole process of expulsion of the gas from sediment to the water and rising the bubbles towards the surface can be observed and quantified in detail by sonar.
Prof. Z. Klusek of IO PAN Sopot , he made research on this fenomenon in Baltic Sea.
i was consulted by him - but not any concussion on the phenomenon was found after Klusek research.
Try Ilia Ostrovsky from Yigal Alon Kinneret Limnological Laboratory, Migdal, Israel. I know that he did this technique in the lake, different environment though, but worth to try.
Try Ilia Ostrovsky from Yigal Alon Kinneret Limnological Laboratory, Migdal, Israel. I know that he did this technique in the lake, different environment though, but worth to try.
Thanks Arianto. I am in contact with Ilya since many years. Sending the cheers from Lake Kinneret:
Methane bubbles in Lake Kinneret: Quantification and temporal and spatial heterogeneity
https://www.academia.edu/2075127/Methane_bubbles_in_Lake_Kinneret_Quantification_and_temporal_and_spatial_heterogeneity
interesting work
can I know at which depth and how many time you monitor this daily or what?
regards
My observations are mostly made on the basis of the annual acoustic cruises dedicated to the assessment of the fish stocks in the Baltic. Look a my Projects:On Fish distribution and Environment at fish depth. The only Projects dedicated to the systematic and serious research on methane are realized by Ilya Ostrovsky in Israel (Lake Kinneret). Due to connection of responsability of the countries ans the reason od the methane increase - the problem of financing the research is "increasing".