Article
Energy & Fuels
Natalya Misyurkeeva, Igor Buddo, Ivan Shelokhov, Alexander Smirnov, Alexey Nezhdanov, Yury Agafonov
Summary: The permafrost in Arctic West Siberia contains rich hydrocarbon fuel resources, including natural gas hydrates which could be an alternative fuel source in the future. Transient electromagnetic surveys have been conducted to study the permafrost thickness and detect faults and heaving features, indicating potential gas hydrate accumulations. The survey results show that the method is effective in identifying the heterogeneity of permafrost and revealing gas migration pathways.
Article
Environmental Sciences
Irina Ivanova, Oleg Savichev, Nikolay Trifonov, Yulia V. Kolubaeva, Natalia Volkova
Summary: This study conducted long-term hydrogeochemical monitoring in northern West Siberia, identifying four water chemistry provinces and predicting that the water quality in the region is unlikely to change significantly in the next one or two decades, with slight variations in different seasons.
Article
Geography, Physical
O. A. Meshcheryakova, N. E. Volvakh, R. N. Kurbanov, V. S. Zykina, V. S. Zykin, A. S. Murray, A. O. Volvakh, D. G. Malikov, J. -P. Buylaert
Summary: This article presents a study on the loess-palaeosol sequence of Western Siberia. By using luminescence dating, the authors determined the formation period of the sequence and identified hiatuses in sedimentation. The results indicate the significant presence of the Kazantsevo interglacial in the region, which is important for stratigraphic correlation.
QUATERNARY GEOCHRONOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Rimma N. Abdrashitova, Marsel A. Kadyrov
Summary: This study aims to identify whether natural or man-caused factors have a dominant impact on the variable groundwater salinity of the Lower Jurassic sediments in the Talinskoye oilfield of West Siberia in Russia. The findings suggest that the major factors affecting the variability in groundwater salinity are natural ones, as evidenced by the genetic coefficients and the tight associations with geological parameters.
Article
Energy & Fuels
Novikov Dmitry Anatolievich
Summary: Using water-gas equilibrium calculations, the study reveals the equilibrium state of oil and gas and water in a petroliferous basin with high saline water content. It is found that the gas saturation coefficient of formation water is related to depth and total gas saturation, with layers having gas saturation greater than 1.8 L/L favoring hydrocarbon accumulation. Unsaturated formation water can dissolve existing gas, and the gas saturation coefficient varies with the type of fluid in the reservoir.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2022)
Article
Geography, Physical
Yana Tikhonravova, Elena Slagoda, Vladislav Butakov, Ekaterina Koroleva, Galina Simonova, Robert Sysolyatin
Summary: This study investigated the heterogeneous ice wedges in a peatland in Northwest Siberia, identifying their structural elements and genetic types. The mechanisms of ice-wedge formation were revealed through the analysis of stable isotope values and chemical compositions. The study also calculated the paleotemperature of winter based on the ice veins formed by the ice wedges.
PERMAFROST AND PERIGLACIAL PROCESSES
(2022)
Article
Paleontology
Alexey Tesakov, Alexey Bondarev
Summary: The discovery of a previously unknown evolutionary stage of true lemmings in West Siberia sheds light on their evolutionary process, showing distinct features compared to the European species and contributing to our understanding of the formation of the high latitude mammalian fauna of Eurasia.
JOURNAL OF VERTEBRATE PALEONTOLOGY
(2022)
Article
Environmental Sciences
Min Chen, Guobiao Huang, Jishang Xu, Chengtao Wang, Jizheng Xu, Hongshuai Qi, Aimei Zhang
Summary: Diatoms from the Holocene sediments in the northern West Caroline Basin were analyzed to understand the relationship between diatoms and environment in the western equatorial Pacific. A total of 53 species or varieties of diatoms belonging to 22 genera were identified, with Azpeitia nodulifera, Hemidiscus cuneiformis, and Thalassiosira pacifica being the dominant species. The study area was divided into three regions based on the diatom assemblages and their influences.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Viacheslav I. I. Kharuk, Il'ya A. Petrov, Leonid V. V. Krivobokov, Alexey S. S. Golyukov, Maria L. L. Dvinskaya, Sergei T. T. Im, Alexander S. S. Shushpanov, Kevin T. T. Smith
Summary: The study on the dendroecology of larch in the northernmost forest in the world reveals the complex relationship between tree growth, forest stand establishment, and changing eco-climatic factors. The environmental constraints that limit larch growth in this harsh habitat include soil moisture, winter winds, and low air temperature. Larch growth is influenced by air temperature, soil moisture anomalies, and winter wind speed, with significant differences before and after the 2000s. The length of the growing season and larch growth are sensitive to air temperature, and the adverse influence of winter winds has decreased over time. Soil moisture also affects larch growth, with wet, cold soils having a negative influence, while decreased soil moisture in the northern lowlands favors increased larch growth. Larch growth is strongly correlated with GPP and NPP, indicating that this Arctic region continues to be a carbon sink.
REGIONAL ENVIRONMENTAL CHANGE
(2023)
Article
Chemistry, Multidisciplinary
Yefei Chen, Jinxiu Yang, Muhammad Talha, Ying Xia, Mingming Tang, Rong Xie
Summary: This study interprets the sequence stratigraphy of the Jurassic strata in the ST gas field of the northern West Siberia Basin based on seismic facies analysis and lithology stacking patterns of wells. Four third-order sequences and nine fourth-order sequences are identified, and a sequence evolution model is built. The research provides insights for future gas exploration and exploitation in the area.
APPLIED SCIENCES-BASEL
(2023)
Article
Geography, Physical
Anatoly Lozhkin, Patricia M. Anderson, Kira Regel
Summary: The study of Priyatnoye Lake highlights the characteristics of intermontane depressions in northeastern Siberia and their potential impact on carbon budgets under global warming and permafrost melting.
QUATERNARY RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Andrea M. Portier, Mieke Thierens, Ellen E. Martin, Sidney R. Hemming, Joel H. Gombiner, Maureen E. Raymo
Summary: The regolith hypothesis suggests that the growth of the Laurentide Ice Sheet (LIS) during the mid-Pleistocene transition (MPT) was due to the removal of softer subglacial substrates, exposing crystalline bedrock with higher basal friction. The study found evidence supporting this hypothesis, showing changes in sediment composition following the MPT, with contributions from physically weathered clays sourced from the Canadian Shield.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2021)
Article
Geography, Physical
Lilit Pogosyan, Sergey Sedov, Andrey Yurtaev, Alexey Rusakov, Sofia N. Lessovaia, Vladimir Sheinkman, Alexander S. Pechkin
Summary: This research presents a model of soil genesis in North-West Siberia, connecting its development stages to the environmental changes over the Late Pleistocene and the Holocene. The study reveals that the soils in this region have a complex polygenetic origin and have undergone multiple stages of formation and changes.
QUATERNARY INTERNATIONAL
(2022)
Article
Oceanography
Xiaoqiang Guo, Jishang Xu, Jikun Wang, Yanyan Zhao, Guangxue Li, Jizheng Xu, Yang Zhang, Shang Zhou, Ju Tian, Long Chen
Summary: The spatial distribution of deep-sea sediment lithologies is diverse and heterogeneous, with water depth and seafloor topography playing a significant role in controlling the lithologies.
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
(2023)
Article
Biodiversity Conservation
Aleksandr F. Sabrekov, Irina E. Terentieva, Gregory J. McDermid, Yuriy V. Litti, Anatoly S. Prokushkin, Mikhail V. Glagolev, Alexey V. Petrozhitskiy, Peter N. Kalinkin, Dmitry V. Kuleshov, Ekaterina V. Parkhomchuk
Summary: The expansive plains of West Siberia contain significant carbon stocks, with extensive peatland complex overlying the largest-known hydrocarbon basin. Several methane seeps have been discovered in this area, and three hypotheses were proposed to explain their origin and migration pathways. The study used geochemical tools to test these hypotheses and found that the primary source of seep methane is the organic matter in raised bogs, with varying production pathways. The findings highlight the importance of methane lateral migration in West Siberia's bog-dominated landscapes and its potential occurrence in similar landscapes across the boreal-taiga biome.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Geosciences, Multidisciplinary
I. D. Zolnikov, E. V. Deev, D. V. Nazarov, S. A. Kotler
RUSSIAN GEOLOGY AND GEOPHYSICS
(2015)
Article
Geography, Physical
Valery Astakhov, Valentina Shkatova, Andrei Zastrozhnov, Margarita Chuyko
QUATERNARY INTERNATIONAL
(2016)
Article
Geosciences, Multidisciplinary
I. D. Zolnikov, E. V. Deev, S. A. Kotler, G. G. Rusanov, D. V. Nazarov
RUSSIAN GEOLOGY AND GEOPHYSICS
(2016)
Article
Geosciences, Multidisciplinary
V. I. Astakhov, J. Mangerud
DOKLADY EARTH SCIENCES
(2014)
Article
Geography, Physical
John Inge Svendsen, Linn Cecilie Kruger, Jan Mangerud, Valery I. Astakhov, Aage Paus, Dmitry Nazarov, Andrew Murray
QUATERNARY SCIENCE REVIEWS
(2014)
Review
Geography, Physical
V. Astakhov
QUATERNARY SCIENCE REVIEWS
(2014)
Article
Geosciences, Multidisciplinary
Andrei V. Panin, Valery I. Astakhov, Eliisa Lotsari, Goro Komatsu, Joerg Lang, Jutta Winsemann
EARTH-SCIENCE REVIEWS
(2020)
Article
Geography, Physical
Valery Astakhov, Liudmila Semionova
Summary: This paper presents new field and laboratory data combined with previously published materials on interglacial sediments underlying two upper tills of northern European Russia and West Siberia, discussing the Atlantic marine invasion during the late Middle Pleistocene and a warmer climate than today based on forest pollen spectra in the European Northeast. The evidence suggests at least two saline Atlantic water invasions into northern Russia during the last 250 kyears, contradicting the model of the unique boreal transgression and providing a new intra-regional stratigraphic marker for the northern Pleistocene.
QUATERNARY INTERNATIONAL
(2021)
Article
Geography, Physical
Valery Astakhov, Ludmila Pestova, Valentina Shkatova
Summary: This study provides an explanatory note for the sketch map of loessoids, which includes loess and various loess-like deposits. The map is a byproduct of the ongoing Quaternary Map project of the Russian Federation and is based on national geological maps and literary data. The distribution and classification of loessoids reveal their stratigraphic and geographical variations. Regardless of their origin and geographical diversity, all loessoids share the fundamental feature of paleosols.
QUATERNARY INTERNATIONAL
(2022)
Article
Geography, Physical
Dmitry Nazarov, Olga A. Nikolskaia, Anna S. Gladysheva, Igor Zhigmanovskiy, Maksim Ruchkin, Aleksei Merkuljev, Kristina J. Thomsen
Summary: Marine sediments in the West Siberian Arctic have been studied using new geological, palaeontological and geochronological data, revealing two distinct Pleistocene interglacial marine formations. These formations contain boreal mollusc fauna and suggest that warmer Atlantic waters penetrated further eastwards during MIS 7 and MIS 5e than at present.
Article
Geography, Physical
Dmitry V. Nazarov, Olga A. Nikolskaia, Igor V. Zhigmanovskiy, Maksim V. Ruchkin, Anna A. Cherezova
Summary: This study reconstructs the giant Lake Yamal that existed in the West Siberian Arctic approximately 60-35 thousand years ago. The lake's sediments form the majority of the landforms in the area and contain a variety of freshwater diatoms. The lake was formed after the regression of a postglacial coldwater sea and was dammed by an ice sheet. The sediments of Lake Yamal are associated with ancient river alluvium and are located on the northern Yamal Peninsula.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
April S. Dalton, Evan J. Gowan, Jan Mangerud, Per Moeller, Juha P. Lunkka, Valery Astakhov
Summary: This study synthesizes sea-level proxies for the last interglacial period in the glaciated Northern Hemisphere and explores factors such as sea-level rise and glacial retreat. The results show that sea level during the last interglacial period was higher than at present, providing valuable insights for predicting future sea-level rise.
EARTH SYSTEM SCIENCE DATA
(2022)
Article
Geosciences, Multidisciplinary
V. Astakhov
RUSSIAN GEOLOGY AND GEOPHYSICS
(2019)
Review
Geography, Physical
Valery I. Astakhov
Article
Geosciences, Multidisciplinary
V. I. Astakhov
DOKLADY EARTH SCIENCES
(2017)
