scholarly journals Using geoinformation technologies for the study of small thermokarst lakes fields in the western siberia arctic based on satellite images of Kanopus-v

2018 ◽  
Vol 14 (3) ◽  
pp. 7-14
Author(s):  
Ildar N Muratov
Keyword(s):  
High Resolution ◽  
Satellite Images ◽  
Western Siberia ◽  
Test Site ◽  
The Arctic ◽  
Arctic Zone ◽  
Thermokarst Lakes ◽  
Geoinformation Technologies ◽  
High Resolution Images

Remote studies were performed with use of high-resolution images Kanopus-V at 30 test sites, located fairly evenly on the territory of the Arctic zone of Western Siberia. Data were obtained on the number of lakes and their areas in each test site. The number of lakes varied in different test sites from 135 to 1620, and the area of lakes is from 40 m2 to 400 hectares. Changes in the characteristics of the fields of small thermokarst lakes are studied depending on the landscape zoning. Changes in the density of lakes, their total area in the test areas and limnicity in the Arctic and northern subarctic landscapes are on average quite poorly expressed, but when they move to the southern subarctic zone, their values show a significant increase, which may indicate a difference in the intensity of thermokarst processes in different landscape areas.

scholarly journals Modeling spatial structure of thermokarst lake fields in permafrost of Western Siberia based on satellite images

2019 ◽  
Vol 19 (1) ◽  
pp. 1-10
Author(s):  
Vladimir Yu. Polishchuk ◽  
Ildar N. Muratov ◽  
Yury M. Polishchuk
Keyword(s):  
Spatial Structure ◽  
Size Distribution ◽  
Spatial Resolution ◽  
Satellite Images ◽  
Western Siberia ◽  
High Spatial Resolution ◽  
The Arctic ◽  
Landsat 8 ◽  
Small Lakes ◽  
Thermokarst Lakes

Deciphering the satellite images of medium and high spatial resolution of the northern territories of Western Siberia has been carried out using geoinformation system ArcGIS 10.3. Images of medium resolution Landsat-8 and high resolution Kanopus-V were used. Kanopus-V images alluded to determine the number and areas of small lakes, which are considered as intensive sources of methane emission into the atmosphere from thermokarst lakes. Data on the spatial characteristics of thermokarst lakes were obtained. Based on the integration of images of medium and high spatial resolution, a synthesized histogram of the distribution of lakes in a wide range of sizes was constructed, taking into account small lakes. The obtained histogram was approximated by a lognormal distribution law by the Pearson criterion with a probability of 0.99. Based on the geo-simulation approach, a new model of the spatial structure of the fields of thermokarst lakes is presented, taking into account the lognormal law of the lake size-distribution. Algorithms for modeling the spatial structure of the fields of thermokarst lakes are described. An example of modeling the field of thermokarst lakes with a lognormal law of their size-distribution is given. The practical applicability of the previously developed model with an exponential distribution of lakes in size, based on data from Landsat images, has been experimentally confirmed. The results can be used to obtain predictions of the dynamics of methane emissions from the thermokarst lakes of the Arctic zone of Northern Eurasia for the coming decades in the context of climate changes.

scholarly journals Modeling spatial structure of thermokarst lake fields in permafrost of Western Siberia based on satellite images

2019 ◽  
Vol 19 (1) ◽  
pp. 1-10
Author(s):  
Vladimir Yu Polishchuk ◽  
Ildar N Muratov ◽  
Yury M Polishchuk
Keyword(s):  
Spatial Structure ◽  
Size Distribution ◽  
Spatial Resolution ◽  
Satellite Images ◽  
Western Siberia ◽  
High Spatial Resolution ◽  
The Arctic ◽  
Landsat 8 ◽  
Small Lakes ◽  
Thermokarst Lakes

Deciphering the satellite images of medium and high spatial resolution of the northern territories of Western Siberia has been carried out using geoinformation system ArcGIS 10.3. Images of medium resolution Landsat-8 and high resolution Kanopus-V were used. Kanopus-V images alluded to determine the number and areas of small lakes, which are considered as intensive sources of methane emission into the atmosphere from thermokarst lakes. Data on the spatial characteristics of thermokarst lakes were obtained. Based on the integration of images of medium and high spatial resolution, a synthesized histogram of the distribution of lakes in a wide range of sizes was constructed, taking into account small lakes. The obtained histogram was approximated by a lognormal distribution law by the Pearson criterion with a probability of 0.99. Based on the geo-simulation approach, a new model of the spatial structure of the fields of thermokarst lakes is presented, taking into account the lognormal law of the lake size-distribution. Algorithms for modeling the spatial structure of the fields of thermokarst lakes are described. An example of modeling the field of thermokarst lakes with a lognormal law of their size-distribution is given. The practical applicability of the previously developed model with an exponential distribution of lakes in size, based on data from Landsat images, has been experimentally confirmed. The results can be used to obtain predictions of the dynamics of methane emissions from the thermokarst lakes of the Arctic zone of Northern Eurasia for the coming decades in the context of climate changes.

scholarly journals Remote study of thermokarst lakes in the arctic tundra of the taimyr

2021 ◽  
Vol 60 (1) ◽  
pp. 62-71
Author(s):  
Ildar N. Muratov ◽  
Asemgul S. Ibraeva ◽  
Lilia L. Timergazina ◽  
Yury M. Polishchuk
Keyword(s):  
Size Distribution ◽  
Satellite Images ◽  
Linear Trend ◽  
Arctic Tundra ◽  
The Arctic ◽  
Arctic Zone ◽  
Thermokarst Lakes ◽  
Significant Growth ◽  
Wide Range ◽  
Sentinel 2

The results of remote studies of thermokarst lakes in the Arctic zone of the Taimyr tundra are presented. The research was carried out on the territory of 725 thousand km2. Sentinel-2 satellite images were used in the studies, which made it possible to study the peculiarities of distribution of the number, total area of the lakes and tortuosity of their coastal borders. Histograms of the distribution of the number and total areas of the lakes in an extra wide range of their sizes from 0.2 to 5000 ha are presented. The histogram of lakes size-distribution demonstrates significant growth of their number with decrease in size. Histogram of the distribution of total areas of lakes by intervals of their sizes shows that more than 80 % of total area of lakes are dominated by lakes with sizes from 2 to 1000 ha. The analysis of the histogram of the degree of tortuosity of lakes borders distribution showed that the majority of lakes have the form of the coastal lines, which differs from a circle. The dependence of the degree of tortuosity of lakes borders on the size of lakes was studied and a positive linear trend of its change with the growth of the area of lakes was established.

scholarly journals Seasonality of consumption of traditional products of reindeer husbandry and river fishing by indigenous people of the Arctic zone of Western Siberia in the context of climate change

2021 ◽  
Vol 100 (6) ◽  
pp. 610-616
Author(s):  
Sergey V. Andronov ◽  
Andrey A. Lobanov ◽  
Irina V. Kobel’kova ◽  
Andrey I. Popov ◽  
Luo Luo ◽  
...  
Keyword(s):  
Climate Change ◽  
Russian Federation ◽  
Industrial Development ◽  
Western Siberia ◽  
Local Food ◽  
Developed Countries ◽  
The Arctic ◽  
Arctic Zone ◽  
Annual Consumption ◽  
The Russian Federation

Introduction. The nutrition of the Nenets in the Arctic zone of Western Siberia is mainly based on traditional products (raw (thermally unprocessed) local fish and venison), which is the most important factor of survival in the Arctic. Storing up food products for an extended period is not relevant for the Nenets. Climate change and industrial development in the Arctic primarily affect the seasonality of consumption. Changing the calendar of fish and venison harvesting leads to greater use of imported and canned local food, increasing the length of the periods when local food completely disappears from the diet of the Nenets. Material and methods. During the expeditions to the national villages of the Yamal-Nenets Autonomous Okrug, cross-sectional screening studies were performed, in which 985 Nenets people took part. Nutritional analysis was conducted using the questionnaire method based on an album of portions and dishes. Retrospective information was collected on the seasonality of consumption of reindeer products and local fisheries (the length of the period when unserved fish and venison are available). Results. The consumption of reindeer and river fishery products is seasonal. The duration of the season of venison consumption was from 150±14.0 to 180±21.0, and raw fish - from 120±14.0 to 200±21.0 days. Despite the high level of consuming reindeer products per season, the average annual consumption of venison by Nenets in the Arctic zone of Western Siberia was 240 g/day/person that is less than in the central regions of the Russian Federation and industrially developed countries. In the studied area, the average annual consumption of fish (171.5 g/day/person) is three times higher than the average consumption in the Russian Federation. However, increased consumption of traditional food is typically only during the season of fishing or slaughtering reindeer. The average annual consumption reduced; during the off-season, the share of easily digestible carbohydrates in the diet increased. Conclusion. The creation of fish and venison stocks in villages and their year-round sale to the population is a necessary step in ensuring the food security of the Nenets people.

scholarly journals High Resolution Satellite Images for Instantaneous Shoreline Extraction Using New Enhancement Algorithms

Geosciences ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 123 ◽  
Author(s):  
Donatella Dominici ◽  
Sara Zollini ◽  
Maria Alicandro ◽  
Francesca Della Torre ◽  
Paolo Buscema ◽  
...  
Keyword(s):  
High Resolution ◽  
Large Scale ◽  
Satellite Images ◽  
Human Life ◽  
Essential Element ◽  
Action Planning ◽  
High Resolution Satellite Images ◽  
High Resolution Images ◽  
Territorial Government ◽  
Very High

Knowledge of a territory is an essential element in any future planning action and in appropriate territorial and environmental requalification action planning. The current large-scale availability of satellite data, thanks to very high resolution images, provides professional users in the environmental, urban planning, engineering, and territorial government sectors, in general, with large amounts of useful data with which to monitor the territory and cultural heritage. Italy is experiencing environmental emergencies, and coastal erosion is one of the greatest threats, not only to the Italian heritage and economy, but also to human life. The aim of this paper is to find a rapid way of identifying the instantaneous shoreline. This possibility could help government institutions such as regions, civil protection, etc., to analyze large areas of land quickly. The focus is on instantaneous shoreline extraction in Ortona (CH, Italy), without considering tides, using WorldView-2 satellite images (50-cm resolution in panchromatic and 2 m in multispectral). In particular, the main purpose of this paper is to compare commercial software and ACM filters to test their effectiveness.

Biogeochemistry of macrophytes, sediments and porewaters in thermokarst lakes of western Siberia in the discontinuous and continuous permafrost zone

2020 ◽  
Author(s):  
Rinat Manasypov ◽  
Oleg Pokrovsky ◽  
Liudmila Shirokova
Keyword(s):  
Trace Elements ◽  
Lake Sediments ◽  
Aquatic Plants ◽  
Lake Water ◽  
Western Siberia ◽  
The Arctic ◽  
Formation Mechanisms ◽  
Thermokarst Lakes ◽  
Continuous Permafrost ◽  
Thaw Lakes

<p>Despite high importance of macrophytes in shallow thaw lakes for control of major and trace nutrients in lake water, the chemical composition of different aquatic plants and trace element (TE) partitioning between macrophytes and lake water and sediments in the permafrost regions remain totally unknown. Here we sampled dominant macrophytes of thermokarst (thaw) lakes of discontinuous and continuous permafrost zones in Western Siberia Lowland (WSL) and we measured major and trace elements in plant biomass, lake water, lake sediments and sediment porewater. All 6 studies plants (Hippuris vulgaris L., Glyceria maxima (Hartm.) Holmb., Comarum palustre L., Ranunculus spitzbergensis Hadac, Carex aquatilis Wahlenb s. str., Menyanthes trifoliata L.), sizably accumulate macronutrients (Na, Mg, Ca), micronutrients (B, Mo, Nu, Cu, Zn, Co) and toxicants (As, Cd) relative to lake sediments. The accumulation of other trace elements including rare earth elements (REE) in macrophytes relative to pore waters and sediments was strongly species-specific. Under climate warmings scenario and the propagation of southern species northward, the accumulation of trace metals in aquatic plants of thermokarst lakes will produce preferential uptake of Cd, Pb, Ba from thermokarst lake water and sediments by the biomass of aquatic macrophytes. This may eventually diminish the transport of metal micronutrients from lakes to rivers and further to the Arctic Ocean.</p><p>Support from the RSF (RNF) grant 19-77-00073 “Experimental modeling of the formation mechanisms for elemental composition of water in thermokarst lakes of Western Siberia: vegetation effect”.</p>

The level of exhaled nitric oxide in the inhabitants in the Arctic zone of Western Siberia

2019 ◽  
Author(s):  
Andrei Lobanov ◽  
Sergey Andronov ◽  
Alexandr Emelyanov ◽  
Andrei Popov ◽  
Liliya Lobanova ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Western Siberia ◽  
Exhaled Nitric Oxide ◽  
The Arctic ◽  
Arctic Zone
Sign in / Sign up

Export Citation Format

Share Document