| Abstract: | This paper discusses the results of long-term monitoring observations on the chemical and isotopic composition of free gases
in gryphons of the South Sakhalin mud volcano on Sakhalin Island. It was shown that during seismic activation in the region,
the chemical composition of free gases changes, whereas the isotopic composition of carbon in methane and carbon dioxide remains
constant. A possible interpretation of the obtained data was suggested. The depth of the gas reservoir that supplies the South
Sakhalin mud volcano was estimated as well. |
