Количество страниц: 6 с.
The physical properties of air and water as carriers of thermal energy, used or taken into account in the development of devices and technologies for the use of natural thermal resources, are briefly stated. The developed cooling and heating devices and technologies that use the thermal energy of air and water are presented. It is shown how the change in the design achieved an increase in the reliability of the air thermosiphon used for local cooling of the soils of the foundations of structures. The technology of accumulating cold atmospheric air in an array of frozen soils containing underground structures, which has been successfully used for more than 10 years to control the temperature regime of the Federal Cryostorage of Plant Seeds in Yakutsk, in which only natural cold resources are used for the first time in the world, is given. The technology for creating an underground accumulator of cold atmospheric air by freezing water and using the heat of its phase transition to cool liquids and gases, as well as the results of experimental tests, are described. The efficiency of using the heat of the phase transition of water for heating some types of industrial premises is shown. A method for reducing the buoyant effect of frost heaving of soils on pile foundations by heating freezing heaving soils with the heat of the phase transition of water is described.
Кузьмин, Г. П. Устройства и технологии использования природных криогенных ресурсов / Кузьмин Г. П. ; Институт мерзлотоведения им. П. И. Мельникова // Успехи современного естествознания. - 2023. - N 9. - С. 71-76. - DOI: 10.17513/use.38105
DOI: 10.17513/use.38105
Количество страниц: 6 с.
- Математика. Естественные науки > Геология. Геологические и геофизические науки,
- Математика. Естественные науки > Общая геология . Метеорология. Климатология. Историческая геология. Стратиграфия. Палеогеография,
- НАУКА ЯКУТИИ > МАТЕМАТИКА. ЕСТЕСТВЕННЫЕ НАУКИ > Геология. Геологические и геофизические науки.
One of the ways to obtain information about the cryogenic state of rocks by GPR is based on the analysis of the in-phase axes of signals reflected from local objects. On the images of GPR radargrams, similar in-phase axes are represented by hyperbolic curves. On the basis of their localization and refinement of the form, the speed of passage of an electromagnetic wave in the medium is determined. To refine the shape of the hyperbolic curve in the developed algorithm, methods based on the Hough transform were used. To optimize the performance of the algorithm, restrictions on the dimensions of the original and accumulator spaces are introduced. The boundaries of the original space were determined on the basis of previous studies on the detection of hyperbolic axes of common-mode signals. The dimension of the Hough space was reduced on the basis of a priori knowledge of the possible allowable speed of electromagnetic waves in the medium. As a result of the work of the created software, the speed of propagation of an electromagnetic wave in space above the local object and the real part of the complex relative permittivity are calculated, which makes it possible to determine the electrophysical properties of the medium. Testing of the developed algorithm was carried out on the results of field georadar measurements and synthetic data. The accuracy of the results of the algorithm was 98.6 %, which indicates the adequacy of its applicability for studying ice in permafrost layers.
Петрова, Е. А. Определение положения подземного льда в массиве мерзлых горных пород по данным георадиолокации на основе преобразования Хафа / Петрова Е. А., Соколов К. О., Прудецкий Н. Д. ; Северо-Восточный федеральный университет им. М. К. Аммосова, Институт горного дела Севера имени Н. В. Черского // Успехи современного естествознания. - 2023. - N 8. - С. 86-91. - DOI: 10.17513/use.38092
DOI: 10.17513/use.38092
Количество страниц: 6 с.
The Basin of the Vilyui river is located on the territory of Western Yakutia, one of the most developed and industrialized parts of Yakutia, which is of great economic and strategic importance for Russia. The region is the center of the diamond mining industry of the Russian Federation, where primary and alluvial diamond deposits are developed, a cascade of hydroelectric power stations is located on the river Vilyui. This causes environmental and social problems, negatively affecting all components of the natural environment. It is necessary to study the stability of northern landscapes to technogenic impact and study the hydrobiological state of aquatic ecosystems, in particular, the state of the algoflora of watercourses. As a result of studying the degree of stability of landscapes in the basin of the river Vilyui to technogenic impact on permafrost and bioclimatic indicators, the degree of their resistance is determined. It was revealed that, according to the permafrost characteristics, the northern taiga open forest and haze landscapes are defined as predominantly weakly resistant, the middle taiga as medium resistant. The most unstable in terms of bioclimatic indicators were mountain-tundra landscapes, characterized by the coldest and most humid conditions. As a result of studies of the current hydrobiological state of the rivers in the basin of the river Vilyui determined the low development of phytoplankton and phytoperiphyton in the river Irelyakh, M. Botuobuya and in the upper reaches of the river Vilyui, consisting of a monotonous species composition of diatoms and green algae. The maximum average number of algae varies from 82290 cells/l to 20700 cells/l, the highest biomass was noted in one area and is 1.58 mg/l. The Shannon-Weaver biodiversity index varies by sampling points along the river. Vilyuy from 0.19 bits / copy. and 1.00 bits/copy. up to 2.40 bits/copy. According to the sanitary-biological characteristics, mass species-indicators of water saprobicity were identified, which indicates the III class of water purity, as moderately polluted. Thus, it was determined that the state of phytoplankton and phytoperiphyton is under the influence of the technogenic load of diamond mining and hydropower enterprises.The work was carried out according to the state assignment on the topic “Vegetation cover of the permafrost zone of the taiga Yakutia: biodiversity, habitat-forming functions, protection and rational use” (scientific topic code: FWRS-2021-0023; draft state task (No. FWRS-2021-0014) of the program in the priority area of the PFNI RF for the long-term period (2021-2030).
Николаева, Н. А. Оценка некоторых аспектов состояния рек и ландшафтов Западной Якутии в условиях антропогенного воздействия / Николаева Н. А., Копырина Л. И. ; Институт физико-технических проблем Севера им. В. П. Ларионова, Институт биологических проблем криолитозоны // Успехи современного естествознания. - 2023. - N 6. - С. 59-64. - DOI: 10.17513/use.38004
DOI: 10.17513/use.38004
Издательство: Издательство Бурятского научного центра СО РАН
Год выпуска: 2006
Количество страниц: 268 с.
Год выпуска: 2004
Количество страниц: 144 с.
Издательство: Детская литература
Год выпуска: 1968
Серия, номер выпуска: Школьная библиотека
Количество страниц: 328 с.
Издательство: ЯФ СО АН СССР
Год выпуска: 1987
Количество страниц: 190 с.
Количество страниц: 9 с.
The accuracy of GHCN-CAMS reanalysis reproduction of the intra-annual air temperature distribution was assessed for the historical (1961-1990) and current (1991-2020) climatic periods, on the scale of climatic norms of seasons and individual months. Data on 86 meteorological stations on the territory of the Sakha Republic (Yakutia), for which climatic series in both time periods were available, were used. The climatic norms of meteorological stations for both periods, as well as their change between periods, were compared with the GHCN- CAMS reanalysis data in corresponding pixels. The root mean square error, Pearson correlation coe cient, and Lin’s concordance coe cient were calculated as similarity metrics. Climatic norms for meteorological stations and calculated in the GHCN-CAMS reanalysis model are closely related linearly, with a correlation coe cient above 0.9, and the highest accuracy is observed for spring months. At the same time, the quality of reanalysis reconstruction of change in climatic norms for months and seasons between periods is signi cantly lower; the best reanalysis accuracy is for fall and winter, and signi cantly lower for summer. In general, the GHCN-CAMS model can be used for calculation and forecasting applications that require intra-annual air temperature distribution.
Тананаев, Н. И. Оценка точности реанализа GHCN-CAMS в расчетах внутригодового распределения температуры воздуха на территории Республики Саха (Якутия) / Н. И. Тананаев, М. А. Тимофеев ; Северо-Восточный федеральный университет им. М. К. Аммосова, Институт мерзлотоведения им. П. И. Мельникова // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: Науки о земле. - 2023. - N 4 (32). - C. 99-110. - DOI: 10.25587/2587-8751-2023-4-99-110
DOI: 10.25587/2587-8751-2023-4-99-110
Количество страниц: 10 с.
Investigations over the last decades have shown that Yakutia is not only a highly representative area for the study of global climate patterns, it is a model of the Earth due to the extensive in uence of the Siberian anticyclone. Covering a grid of coordinates from the Arctic and Paci c Oceans almost to the Atlantic and Tibet, Yakutia dictates the patterns of climate change for the entire Northern Hemisphere. That can be clearly seen on example of modern climate change. The rate of warming here outpaces the rate of the Earth warming in 3-5 average annual degrees, thus showing not only the current warming trend, but also predicting it for the entire Earth with further temperature rise in future. Our paper shows the course of climate change over the last three centuries. It relies on the global patterns of atmospheric circulation on the wave of the hundred-year rhythm. Their essence is that the middle of centuries always brings cooling associated with latitudinal circulation of the atmosphere, and the turn of the century - the warming, in which latitudinal circulation is replaced by meridian circulation. It was happening in the last three centuries, con rmed by instrumental observations, and so it was in the time of Columbus and Vikings. Both came to America at the turn of the century 500 and 1000 years ago, when the Arctic Ocean and the North Atlantic were ice-free.
Поморцев, О. А. Якутия - модель глобального потепления климата земли (на примере циркуляции атмосферы) / О. А. Поморцев ; Северо-Восточный федеральный университет им. М. К. Аммосова // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: Науки о земле. - 2023. - N 4 (32). - C. 69-78. - DOI: 10.25587/2587-8751-2023-4-69-78
DOI: 10.25587/2587-8751-2023-4-69-78
Количество страниц: 9 с.
- Математика. Естественные науки > Геология. Геологические и геофизические науки,
- Краеведение. Археология. География. Биографии. История > Общие вопросы. География как наука. Географические исследования,
- НАУКА ЯКУТИИ > МАТЕМАТИКА. ЕСТЕСТВЕННЫЕ НАУКИ > Геология. Геологические и геофизические науки,
- НАУКА ЯКУТИИ > КРАЕВЕДЕНИЕ. ГЕОГРАФИЯ. БИОГРАФИИ. ИСТОРИЯ > Общие вопросы. География как наука. Географические исследования.
Presently, the climate is warming, with average annual temperatures rising every year, and theArctic remaining one of the most vulnerable regions. This has a noticeable e ect on the northern forests, which leads to the displacement of the tundra zone. Assessing the consequences of a projected increase in air temperature under climate change conditions requires spatial and instant monitoring of hard-to-reach areas. In the last few years, the use of remote sensing techniques and combinations of satellite imagery to calculate vegetation indices has generated great interest in obtaining high-de nition ground data. The article presents the results of modeling soil moisture in Anabar tundra, which is located in the north-west of Yakutia. The study was conducted on the border of tundra and forest tundra in three reference areas (tundra, tundra young forest, tundra indigenous forest). The simulation is presented by comparing the eld data and the normalized di erence index of humidity NDMI. The NDMI index uses the NIR and SWIR channels, calculates a multi-channel raster object and creates a raster image with index values from -1 to 1, which show the humidity level with a spatial resolution of 10 meters. The data showed that the value of humidity pixels according to NDMI in the tundra zone is 0.04, in the tundra young forest is 0.09 and, in the tundra, native forest is 0.15. It was found that the index data correlated with eld humidity data obtained from a depth of 0.2 m. A comparison of remote sensing decryption data with eld data made it possible to simulate the spatial distribution of soil moisture over the vast study area by extrapolation.
Никифорова, Н. Н. Моделирование весовой влажности грунтов на территории Анабарской тундры с использованием наземных исследований и данных дистанционного зондирования земли / Н. Н. Никифорова, С. В. Калиничева, А. Н. Федоров ; Институт мерзлотоведения им. П. И. Мельникова // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: Науки о земле. - 2023. - N 4 (32). - C. 60-68. - DOI: 10.25587/2587-8751-2023-4-60-68
DOI: 10.25587/2587-8751-2023-4-60-68