排序方式： 共有25条查询结果，搜索用时 31 毫秒
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Le Duc Luong Shakirov Renat B. Hoang Nguyen Shinjo Ryuichi Obzhirov Anatoly Syrbu Nadezhda Shakirova Maria 《Water Resources》2019,46(5):807-816
Water Resources - This paper presents review of dissolved Rare Earth Elements (REE) and methane anomalies distribution in the East China Sea water column. In general, the REE concentrations of the... 相似文献
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During the geological survey and prospecting, helium and hydrogen are recognized indicators of minerals, deep-seated faults, seismic activity, and ascending deep fluids. Their anomalous concentrations also serve as a marker of metamorphic processes. Helium survey is applied for tracing deep-seated faults and mapping permeable zones. In this work, the first results of gas geochemical survey in marine sediments and water to study the distribution of helium and hydrogen and their relation with the seismic activity of some geological structures in the southwestern Sea of Okhotsk and northern Sea of Japan. Anomalies of these gases (He up to 60 ppm, H up to 120 ppm) were identified in the hydrate-bearing sediments in the fault zones. It was also found that helium concentrations in the water column of the Tatar Strait are higher than in the studied area of the Sea of Okhotsk, possibly, due to the difference in geological structure and seismotectonic activation. Moreover, coal layers could be a significant source of methane in the gashydrate-bearing layers of the Tatar Strait. 相似文献
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Shakirov R. B. Cuong Do Huy Obzhirov A. I. Valitov M. G. Lee N. S. Legkodimov A. A. Kalgin V. Yu. Yeskova A. I. Proshkina Z. N. Telegin Yu. A. Storozhenko A. V. Ivanov M. V. Pletnev S. P. Sedin V. T. Bulanov A.V. Shvalov D. A. Lipinskaya N. A. Bovsun M. A. Makseev D. S. Thanh Nguyen Trung Anh Le Duc Luong Le Duc 《Oceanology》2021,61(1):147-149
Oceanology - Abstract—The paper gives brief results of comprehensive studies in the South China Sea obtained from a joint Russian–Vietnamese expedition in November 2019 (cruise 88 of... 相似文献
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Geotectonics - The Red River delta with an area of about 12 620 km2 is one of the largest deltas of Viet Nam and it also is one of the remarkable deltas of Asia. The delta was formed during... 相似文献
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Valitov M. G. Shakirov R. B. Lee N. S. Legkodimov A. A. Yakimov T. S. Ponomareva A. L. Kalinchuk V. V. Bovsun M. A. Bulanov V. A. Proshkina Z. N. Syrbu N. S. Korskov I. V. Kalgin V. Yu. Baldanova K. O. Okulov A. K. Makseev D. S. 《Oceanology》2022,62(1):139-141
Oceanology - The paper presents brief results of comprehensive studies of the water area of the Tatar Strait and Sea of Japan obtained on cruise 61 of the R/V “Akademik Oparin” in... 相似文献
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A.S. Astakhov E.A. Gusev A.N. Kolesnik R.B. Shakirov 《Russian Geology and Geophysics》2013,54(9):1056-1070
The chemical composition of bottom sediments in the Chukchi and, partly, East Siberian Seas was studied. In the south and west of the Chukchi Sea, a zone has been detected with the accumulation of sediments rich in organic carbon, an increased background content and anomalies of sulfophile metals (Mo, Zn, Hg, Ag, Au), iron-group metals (V, Ni, Co), and some PGE (Ru, Pt). This zone is confined to the neotectonic active system of rift troughs extending from the Bering Strait and eastern Chukchi Peninsula to the continental slope, where it is bounded by the Cenozoic Charlie rift basin of the Canadian hollow. The geochemical features of the carbon-enriched sediments evidence that they formed under oxygen-deficient conditions and, sometimes, in suboxic and anoxic environments near endogenic water and gas sources. The high carbon and metal contents suggest that the very fine-grained sediments in the rift troughs of the Chukchi Sea are a possible analog of some types of ancient highly carbonaceous sediments belonging to black shales. 相似文献
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R. B. Shakirov A. I. Obzhirov A. S. Salomatin M. M. Makarov 《Doklady Earth Sciences》2017,477(1):1287-1290
This paper reports on the heaviest submarine fluxes of natural gas bubbles (flares) that have occurred in the Sea of Okhotsk, the Laptev Sea, and Lake Baikal. It has been concluded that there is a “gas-geochemical response” of geodynamic and seismotectonic processes in the interaction of lithospheric plates. Using the example of one of the lineaments of Eastern Asia, we have shown that lineament geotectonic structures, which compose the regmatic net of the Earth, control the formation and activity of the biggest centers of methane emission, which are indicators of tectonospheric activity and hydrocarbon accumulation. Changes in the activity of these centers are informative signals of seismic fluctuations. It is concluded that Russian studies play a leading role in gas hydrate forecasts in the seas of the Eastern Arctic. 相似文献
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Shakirov R. B. Hung Duong Quoc Syrbu N. S. Anh Le Duc Obzhirov A. I. Borzova O. V. Okulov A. K. Van Nam Bui Van Diep Nguyen Dong Mai Duc Legkodimov A. A. Shakirova M. V. Ponomareva A. L. Bakunina M. S. 《Doklady Earth Sciences》2019,484(2):181-184
Doklady Earth Sciences - This paper reports the results of the third Russian–Vietnamese expedition (V.I. Il'ichev Pacific Oceanological Institute, Far East Branch, Russian Academy of... 相似文献
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Shakirov R. B. Yatsuk A. V. Mishukova G. I. Obzhirov A. I. Yugai I. G. Cuong Do Huy Lan Nguyen Hong Legkodimov A. A. Shakirova M. V. 《Doklady Earth Sciences》2019,486(1):533-536
Doklady Earth Sciences - The regional gas geochemical profile was first performed in the South China Sea in the north–south direction in January 2017 (42nd cruise of the R/V Akademik Boris... 相似文献