A5001473778- Methane Hydrates and Related Phenomena
- Geological Studies and Exploration
- Atmospheric and Environmental Gas Dynamics
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Arctic and Antarctic ice dynamics
- Astro and Planetary Science
- Marine and environmental studies
- Radioactive element chemistry and processing
- Geochemistry and Geologic Mapping
- Geology and Paleoclimatology Research
- Food Industry and Aquatic Biology
- Underwater Acoustics Research
- Marine and fisheries research
- earthquake and tectonic studies
- Underwater Vehicles and Communication Systems
- Oceanographic and Atmospheric Processes
- Earthquake Detection and Analysis
- Marine and coastal ecosystems
V.I. Il'ichev Pacific Oceanological Institute
2020-2025
Russian Academy of Sciences
2022-2025
Institute of Marine Geology and Geophysics
2025
Vietnam Academy of Science and Technology
2025
Far Eastern Branch of the Russian Academy of Sciences
2021-2022
Complex geological, gas geochemical and hydro meteorological studies were conducted to investigate the methane fields present in bottom sediments seawater of Red River Phu Khanh sedimentary basins. We demonstrate that system tectonic faults formed basins (the eastern shelf slope Vietnam) created necessary conditions for generation migration endogenous into seawater. It is shown dissolved can be transported by marine currents, which turn influenced seasonal irregular synoptic processes. The...
In the warm season of 2024, we conducted sampling and measurements gas-geochemical parameters in seawater, including dissolved methane, helium, hydrogen, Gulf Patience eastern shelf Sakhalin Island Sea Okhotsk during cruise 71 R/V Akademik Oparin. We identified a large area bottom degassing, indicating high potential for oil gas this region. The fields increased methane concentrations extend from seabed to lower boundary seasonal thermocline but do not into deeper parts due strong...
The Muong La–Bac Yen–Cho Bo fault is one of the seismic faults in northwest region Vietnam. Neo-tectonic activities and exogenous processes have influenced drainage system topographic–geomorphologic features on both walls fault. results topographic analysis geomorphological indices confirmed active tectonics during period (Pliocene–Quaternary, about 5 million years). valley floor width-to-height ratio (Vf) less than 0.5 indicates “rejuvenation” streams obvious influence tectonic two studied...
Gas hydrates were found in bottom sediments on the western slope of Kuril Basin from side Terpeniya Gulf (Okhotsk Sea) at 1020 m depths during expeditions 2012 and 2013. However, eastern Tatar Strait, gas sampled an unusually shallow 322 depth. During our research, we identified hydrate provinces based both water sediment temperature measurement data heat flow, earthquake, cold seep sea current analyses. These have similar hydrological regimes, providing suitable conditions for existence...
Seawater properties in two intense rings the South Atlantic are considered. One ring separated from Brazil Current and other Malvinas Current. The analysis is based on CTD casts SADCP measurements onboard velocity profiler. optical properties, chemical parameters, methane concentration, biological such as primary production, plankton, fish were also analyzed. Analysis of strong differences between eddies supplemented by observations whales birds region.
Bottom formations known as pockmarks basically arise due to extensive gas emission. Active are characterized by exceptionally high saturation and substantially reduced sound speed. The latter circumstance leads strong attenuation of waves contacting with a pockmark. In the present paper, we study low-frequency propagation in 10-km long waveguide crossing giant A new method acoustic scanning based on measurement wavefield propagator is represented. This allows one explore anomalies associated...
Our paper deals with gas-geochemical measurements of CH4 and CO2, as well the first dissolved H2 He in waters eastern shelf Sakhalin Island, obtained during cruise 68 on R/V Akademik Oparin (OP68) 12–18 August 2023. The shallow has high concentrations methane helium water. combined anomalies indicate presence an ascending deep fluid. sources studied area are underlying oil- gas-bearing rocks extending to coast island. faults region minor discontinuities that accompany them along Island...
Dissolved methane coming from its various sources is an important component of seawater. Finding these probable allows for the determination potential oil and/or gas deposit areas. From ecological point view, transport studies can reveal pollution areas on one hand and biological communities, being lower part food chain commercial species, other hand. Moreover, mechanism help to obtain a better understanding contribution World’s oceans global greenhouse emissions. Our research combines...
The paper presents the results of a complex joint Russian-Vietnamese geological, geophysical and oceanographic expedition in South-China Sea (R/V “Akademik M.A. Lavrentyev”, cruise 88, 2019), as well related marine land researches area north south Vietnam under series local FEB RAS – VAST grants. organizers are V. I. Ilyichev Pacific Oceanological Institute Far Eastern Branch Russian Academy Sciences (POI RAS) Marine Geology Geophysics Science Technology (IMGG VAST). In comparison with Japan...
A spatial distribution of methane dissolved in sea water is a critical but poorly understood factor the context seismic activity. Based on results RV AKADEMIK OPARIN integrated geological-geophysical expedition (September 21 – October 31, 2017), this paper deals with regularities concentration variability surface layer Sea Japan: average growth and period were 70 % 10 h, respectively, after each earthquake whereas decrease was 10–30 2–4 h before event. occurs irrespectively depth an...
During the joint Russian-Vietnamese studies in East Vietnam Sea (known as Bien Dong or South China Sea), manifestations of new hydrocarbon-accumulating zones were discovered; evidences presence mineral indicators for solid minerals shelf deposits obtained; a unique zone, where accumulations ferromanganese crusts and nodules have been formed, was revealed first time; evidence properties deep-water fine-dispersed carbonate sediments (which makes it possible to attribute them an independent...
Within the framework of expedition research “Complex studies Antarctic marine ecosystem in areas transport and interaction water masses Atlantic sector Antarctica, Scotia Sea Drake Strait” (cruise 87 R/V “Academik Mstislav Keldysh”, 7 December 2021–5 April 2022), distribution gas-geochemical fields methane Bransfield Strait was studied detail for first time. The connection with complex hydrological regime strait has been revealed. Elevated values concentrations brought to warm current flow...
Data of methane, helium and hydrogen concentrations in the mineral waters, as well subsurface atmosphere, Cat Ba, Co To Bach Long Vi islands, shows that regions belong to degassing zones helium, points at gas condensate potential Bac Bo sedimentary basin. A joint transit these gases via fault structures was established. Distribution patterns from islands (Tonkin Gulf) were obtained water sample data. Thermogenic metamorphogenic detected hydrogeological wells on Ba island anomalies indicate...
During the complex scientific research expedition in Sea of Japan aboard vessel Akademik Oparin (Cruise 61), carbonate nodules were recovered by gravity coring, which subsequently identified as pseudomorphs after ikaite (glendonite). The article presents results electron-probe and tomography studies authigenic carbonates gas-geochemical characteristics host sediments occurring along continental slope Tatar Strait.
Метан является одним из важных представителей органических веществ в воздушной оболочке Земли. Помимо усиления парникового эффекта увеличение содержания метана атмосфере может влиять на сокращение концентрации озона ней, а роль озонового слоя жизни планеты важна. Одним важнейших звеньев цикла и сопутствующих его потокам других газов являются газовые гидраты. Отношения стабильных изотопов углерода (δ13C) гомологов – объективные характеристики гидратообразующих связанных с ними...