A5029007269- Climate change and permafrost
- Geological Studies and Exploration
- Methane Hydrates and Related Phenomena
- Arctic and Antarctic ice dynamics
- Cryospheric studies and observations
- Marine and environmental studies
- Marine and coastal ecosystems
- Aquatic and Environmental Studies
- Atmospheric and Environmental Gas Dynamics
- Food Industry and Aquatic Biology
- Polar Research and Ecology
- Geology and Paleoclimatology Research
- Winter Sports Injuries and Performance
- Arctic and Russian Policy Studies
- Ocean Acidification Effects and Responses
- Indigenous Studies and Ecology
- Ecology and biodiversity studies
- Healthcare Systems and Public Health
- Human Health and Disease
- Water Resources and Management
- Earthquake Detection and Analysis
- Oceanographic and Atmospheric Processes
- Regional Socio-Economic Development Trends
- Statistical and numerical algorithms
- Archaeology and Natural History
National Academy of Sciences of Armenia
2024-2025
Institute of Botany
2024-2025
St Petersburg University
2013-2024
Institute of Solution Chemistry
2024
Czech Academy of Sciences, Institute of Botany
2024
Institute of Russian Literature
2021
Kazan Federal University
2015-2018
Arctic and Antarctic Research Institute
2011-2017
GEOMAR Helmholtz Centre for Ocean Research Kiel
2016
Moscow State University
2009
Abstract Terrestrial hydrology is central to the Arctic system and its freshwater circulation. Water transport water constituents vary, however, across a very diverse geography. In this paper, which component of Freshwater Synthesis, we review processes in terrestrial drainage how they function change seven hydrophysiographical regions (Arctic tundra, boreal plains, shield, mountains, grasslands, glaciers/ice caps, wetlands). We also highlight links between other components system. terms key...
Abstract. Samoylov Island is centrally located within the Lena River Delta at 72° N, 126° E and lies Siberian zone of continuous permafrost. The landscape on consists mainly late Holocene river terraces with polygonal tundra, ponds lakes, an active floodplain. island has been focus numerous multidisciplinary studies since 1993, which have focused climate, land cover, ecology, hydrology, permafrost limnology. This paper aims to provide a framework for future by describing characteristics...
Abstract. Distinctive periglacial landscapes have formed in late-Pleistocene ice-rich permafrost deposits (Ice Complex) of northern Yakutia, Siberia. Thermokarst lakes and thermokarst basins alternate with Yedoma uplands. We investigate different stages Ice Complex the Lena River Delta using remote sensing geoinformation techniques. The morphometry spatial distribution on uplands, basins, are analyzed, possible dependence upon relief position cryolithological context is considered. Of these...
Abstract The quality of lake ice is uppermost importance for safety and under-ice ecology, but its temporal spatial variability largely unknown. Here we conducted a coordinated sampling campaign across the Northern Hemisphere during one warmest winters since 1880 show that 2020/2021 commonly consisted unstable white ice, at times contributing up to 100% total thickness. We observed increased over winter season, becoming thickest constituting largest proportion layer towards end cover season...
Abstract. The Lena River forms one of the largest deltas in Arctic. We compare two sets data to reveal new insights into hydrological, hydrochemical, and geochemical processes within delta: (i) long-term hydrometric observations at Khabarova station head delta from 1951 2005; (ii) field hydrological carried out since 2002. Periods with differing relative discharge intensity fluvial were identified record water sediment discharge. Ice events during spring melt (high water) reconfigured branch...
Abstract. Thermokarst lakes are typical features of the northern permafrost ecosystems, and play an important role in thermal exchange between atmosphere subsurface. The objective this study is to describe main processes quantify heat with underlying sediments. regimes five located within continuous zone Siberia (Lena River Delta) were investigated using hourly water temperature level records covering a 3-year period (2009–2012), together bathymetric survey data. included thermokarst on...
Lake ice has a major impact on the functioning of lake ecosystems, thermal and gas regimes lakes, habitat conditions, socio-economic aspects human life, local climate, etc. The multifaceted influence makes it important to study its changes associated with global warming, including phenology, thickness, snow–ice fraction. This article presents in different regions Eurasia: Arctic (Lake Imandra Murmansk region Kilpisjärvi Finland), temperate zone (six small medium lakes Karelia, Mozhaysk...
Abstract. Ground-based observations of land–atmosphere fluxes are necessary to progressively improve global climate models. Observed data can be used for model evaluation and develop or tune process In arctic permafrost regions, climate–carbon feedbacks amplified. Therefore, increased efforts better represent these regions in models have been made recent years. We present a multi-annual time series carbon dioxide measured situ with the eddy covariance technique Siberian Arctic (72∘22′ N,...
Oxygen conditions in ice-covered lakes depend on many factors, which, turn, are influenced by a changing climate, so detection of the oxygen trend becomes difficult. Our research was based data long-term measurements dissolved (2007–2020), water temperature, under-ice solar radiation, and snow-ice thickness (1995–2020) Lake Vendyurskoe (Northwestern Russia). Changes air temperature precipitation study region during 1994–2020 ice phenology for same period field FLake model calculations were...
In this study, we analyze interactions in lake and catchment systems of a continuous permafrost area. We assessed colored dissolved organic matter (CDOM) absorption at 440 nm (a(440)CDOM) slope (S300–500) lakes using field sampling optical remote sensing data for an area 350 km2 Central Yamal, Siberia. Applying CDOM algorithm (ratio green red band reflectance) two high spatial resolution multispectral GeoEye-1 Worldview-2 satellite images, were able to extrapolate the a(λ)CDOM from 18...
Summary The problem of maintaining uniform magnitude scales is important in seismology. It shown that the surface wave magnitudes measured Soviet Union (MLH) are good agreement with those from Pasadena, Berkeley and Palisades, considered to be a continuation M as used by Gutenberg Richter their catalogue. Body magnitudes, however, show systematic difference between USCGS Russian determinations, Coast Geodetic Survey values being significantly lower. Several possible reasons for this examined...
Abstract. Distinctive periglacial landscapes have formed in late-Pleistocene ice-rich permafrost deposits (Ice Complex) of Northern Yakutia, Siberia. Thermokarst lakes and thermokarst basins alternate with Yedoma uplands. We investigate different stages Ice Complex the Lena River Delta using remote sensing geoinformation techniques. The morphometry spatial distribution on uplands, basins, are analyzed, possible dependence upon relief position cryolithological context is considered. Of these...
Abstract. Samoylov Island is centrally located within the Lena River Delta at 72° N, 126° E and lies Siberian zone of continuous permafrost. The landscape on consists mainly late Holocene river terraces with polygonal tundra, ponds lakes, an active floodplain. island has been focus numerous multidisciplinary studies since 1993, which have focused climate, land cover, ecology, hydrology, permafrost, limnology. This paper aims to provide a framework for future by describing characteristics...
Abstract. Arctic regions and their water bodies are affected by a rapidly warming climate. lakes small ponds known to act as an important source of atmospheric methane. However, not much is about other types in permafrost regions, which include major rivers coastal bays transition type between freshwater marine environments. We monitored dissolved methane concentrations three different (Lena River, Tiksi Bay, Lake Golzovoye, Siberia, Russia) over period 2 years. Sampling was carried out...
Abstract. This study provides first estimates of the water transport timescale for five lakes located in Larsemann Hills oasis (69∘23′ S, 76∘20′ E) East Antarctica. We estimated lake retention time (LRT) as a ratio volume to inflow and outflow terms balance equation. The LRT was evaluated epiglacial landlocked types, it assumed that these are monomictic, with exchange occurring during warm season only. used hydrological observations collected four seasonal field campaigns evaluate LRT. For...
Abstract. Arctic river deltas and deltaic near-shore zones represent important land–ocean transition influencing sediment dynamics nutrient fluxes from permafrost-affected terrestrial ecosystems into the coastal Ocean. To accurately model fluvial carbon freshwater export rapidly changing catchments as well assess impacts of future change on shelf ecosystems, we need to understand sea floor characteristics topographic variety zones. date, digital bathymetrical data poorly accessible, shallow,...
The Pan-Eurasian Experiment (PEEX) program was initiated as a bottom-up approach by the researchers coming fromFinlandandRussiain October 2012. PEEX China kick off meeting held in November 2013. During its five years operation, has established governance structure and delivered science plan for Northern Eurasian region. also introduced concept design modelling platform ground-based situ observation systems detecting land-atmosphere ocean-atmosphere interactions. Today, an extensive...
Abstract The Lena Delta in Siberia is the largest delta Arctic and as a snow-dominated ecosystem particularly vulnerable to climate change. Using two decades of MODerate resolution Imaging Spectroradiometer satellite acquisitions, this study investigates interannual spatial variability snow-cover duration summer vegetation vitality Delta. We approximated snow by application normalized difference index greenness (NDVI). consolidated analyses integrating reanalysis products on air temperature...
ГЕОГРАФИЯ УДК 504.54 В. Дмитриев 1 , И. Федорова А. С. Бирюкова 2 ПОДХОДЫ К ИНТЕГРАЛЬНОЙ ОЦЕНКЕ И ГИС-КАРТОГРАФИРОВАНИЮ УСТОЙЧИВОСТИ ЭКОЛОГИЧЕСКОГО БЛАГОПОЛУЧИЯ ГЕОСИСТЕМ.ЧАСТЬ IV.ИНТЕГРАЛЬНАЯ ОЦЕНКА НАЗЕМНЫХ ВОДНЫХ ГЕОСИСТЕМ*1 Санкт-Петербургский государственный университет, Российская Федерация, 199034, Санкт-Петербург, Университетская наб., 7-9 Российский гидрометеорологический 195196, Малоохтинский проспект, 98Настоящая публикация является четвертой в серии с данным...