Abstract:
Experience for the last 30 years explorations (e.x. KOMEX; CHAOS;
SSGH and other projects) in the Japan and Okhotsk Sea regions revealed
that natural gases can be direct signs of the deep structures in the
marginal seas. Deep faults, tectonic troughs, oil-gas deposits, hot spots,
accretion prisms, sources of gas hydrates and mud volcanoes has a
number of natural gas features. Helium, hydrogen, methane, hydrocarbon
gases, nitrogen, carbon dioxide, sulphur dioxide, stable isotopes of gas
compounds, relations of gases can tell us about certain information of
deep structures and minerals. Permeability zones also provide the
greenhouse gases fluxes (methane-carbon dioxide) from interior into the
atmosphere. This article presents also an activity of “Joint Vietnam-
Russia Laboratory for marine geosciences and technology” (IMGG
VAST – POI FEB RAS).
