Количество страниц: 20 с.
- Математика. Естественные науки > Общая биология. Антропология. Вирусология. Микробиология,
- Математика. Естественные науки > Природа. Охрана окружающей среды,
- НАУКА ЯКУТИИ > МАТЕМАТИКА. ЕСТЕСТВЕННЫЕ НАУКИ > Природа. Охрана окружающей среды,
- НАУКА ЯКУТИИ > МАТЕМАТИКА. ЕСТЕСТВЕННЫЕ НАУКИ > Общая биология. Антропология. Вирусология. Микробиология.
For the purposes of monitoring the state of forest ecosystems, it is most e ective to use the capabilities of remote methods. On multispectral Landsat satellite images (a time series of summer and autumn images for 2000, 2001, 2013, 2014) of the territory of the Olekminsky State Nature Reserve, fragments of forests 2 dominated by Gmelin larch (Larix gmelinii Rupr.) with an area of 250 km (scale 1:5000). Then the polygons were saved at three levels of segmentation (scaling) - 4, 16, 64 with scales of 1:2500, 1:1250, 1:625. During decryption, uncontrolled classi cation of polygons using the ISODATA (Iterative Self-Organizing Data Analysis Technigue) method into 2,4,10 classes was carried out. Classi cation into two classes was used to calculate the forest cover index. Seasonal changes were determined by the di erence in the forest cover index values of the polygons in summer and autumn. It has been shown that the greater the di erence, the greater the proportion of larch in mixed forest stands. Distribution curves of forest cover index values were constructed for polygons of the 3rd scaling level. Based on the results of classi cation into 4, 10 classes, statistical processing was carried out with the calculation of indicators of di erence and similarity of polygons - dispersion of the general population and Fisher’s test (F-test). The results of changes in population dispersion and F-test at di erent levels of segmentation and in di erent years are considered.
Рожков, Ю. Ф. Оценка сезонных изменений лесов с использованием сегментации и кластерного анализа космических снимков landsat / Ю. Ф. Рожков, М. Ю. Кондакова ; Государственный заповедник "Олекминский", Гидрохимический институт г. Ростов-на-Дону // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: Науки о земле. - 2023. - N 4 (32). - C. 79-98. - DOI: 10.25587/2587-8751-2023-4-79-98
DOI: 10.25587/2587-8751-2023-4-79-98
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
Количество страниц: 9 с.
The article considers the features of the petrographic composition of the lamprophyre dyke, attributed to the kHunkhadi complex of Late Cretaceous age, established on the Endegechchu hill in the Yano-Adycha tin ore region located in the Adycha tectonic zone. The rocks have a porphyry structure, and mineral formations of their own magmatic stage, magmatic, metasomatic and late hydrothermal-metasomatic substitutions are isolated in their composition. Acharacteristic feature of these rocks are spherulites of concentric-zonal structure, covered with a shell of scaly or lamellar graphite, depending on the size of the spherulites, evenly distributed throughout the rock, which were studied for the rst time and have not been established in other igneous rocks widely developed in the area. The study of spherulites is an important petrological task, which makes it possible to identify the mechanisms of their formation and causes, can indicate the conditions of formation and sources of matter of the rocks containing them. The morphology of graphite, its distribution and the nature of its relationship with surrounding minerals are also very informative for establishing the primary nature of graphite and epigenetic changes in host rocks as a result of various hydrothermal-metasomatic processes, which is possible due to the ability of carbonaceous matter to redistribute in the rock when exposed to various forces, rather than being removed from it.
Шепелева, Я. П. Петрография лампрофиров Ендегеччюйской площади Яна-Адычанского оловорудного района / Я. П. Шепелева, С. В. Горский ; 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. 42-50. - DOI: 10.25587/2587-8751-2023-4-42-50
DOI: 10.25587/2587-8751-2023-4-42-50
Количество страниц: 6 с.
- Общественные науки. Образование > Обеспечение духовных и материальных жизненных потребностей. Социальное обеспечение. Социальная помощь. Обеспечение жилищем. Страхование > Страхование,
- Математика. Естественные науки > Природа. Охрана окружающей среды,
- НАУКА ЯКУТИИ > ОБЩЕСТВЕННЫЕ НАУКИ > Обеспечение духовных и материальных жизненных потребностей. Социальное обеспечение. Социальная помощь. Обеспечение жилищем. Страхование,
- НАУКА ЯКУТИИ > МАТЕМАТИКА. ЕСТЕСТВЕННЫЕ НАУКИ > Математика.
Мельникова, А. А. Учет природно-климатического фактора в страховых организациях / Мельникова А. А. ; Северо-Восточный федеральный университет им. М. К. Аммосова, Институт естественных наук // Республиканская молодежная научно-практическая конференция, посвященная празднованию 150-летия со дня рождения В. К. Арсеньева, Якутск, 19 октября 2022 г. : сборник научных трудов / [редакционная коллегия: Ю. Г. Данилов, Ж. Ф. Дегтева, С. А. Иванова и др.]. - Якутск : Издательский дом СВФУ, 2023. - 1 файл (85 с. ; 2,5 Мб). - С. 61-66.
Количество страниц: 9 с.
- Общественные науки. Образование > Народное образование. Воспитание. Обучение. Организация досуга > Высшее образование. Высшая школа. Подготовка научных кадров,
- Математика. Естественные науки > Геология. Геологические и геофизические науки,
- НАУКА ЯКУТИИ > ОБЩЕСТВЕННЫЕ НАУКИ > Народное образование. Воспитание. Обучение. Организация досуга > Высшее образование. Высшая школа. Подготовка научных кадров,
- НАУКА ЯКУТИИ > МАТЕМАТИКА. ЕСТЕСТВЕННЫЕ НАУКИ > Геология. Геологические и геофизические науки.
N the modern world, geology is one of the most important scienti c disciplines that can provide key knowledge about the structure and processes of our planet. Applied geology, in particular, requires high quali cations and practical experience, and eld training geological practices play a key role in the formation of not only theoretical knowledge of students but also of their practical skills. Educational geological practices permit students of the Faculty of Geology and Survey, North-Eastern Federal University, to master basic methods in eld geological research, including the analysis of rock formations, the identi cation of geological boundaries, and the recognizing of relief-faults. This article provides an overview of the structure and speci cs of eld training geological practices, involving multiple stages from preparatory to eldwork period. The article considers not only essence and signi cance of eld research in terms of formation practical geological skills but also analyze the key aspects that make these practices an integral part of the education of future geologists.
Третьякова, О. Г. Учебные геологические полигоны СВФУ - уникальные объекты для формирования общепрофессиональных компетенций в области геологии, поисков и разведки твердых полезных ископаемых / О. Г. Третьякова, Н. М. Третьякова ; Московская сельскохозяйственная академия им. К. А. Тимирязева, Северо-Восточный федеральный университет им. М. К. Аммосова // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: Наука о земле. - 2023. - N 4 (32). - C. 33-41. - DOI: 10.25587/2587-8751-2023-4-33-41
DOI: 10.25587/2587-8751-2023-4-33-41
Количество страниц: 7 с.
The paper deals with the issue of regional gas content of Nejelinsky formation of the Lower Triassic. Based on the consideration of the peculiarities of the gas content of Nejelinsky formation and the upper productive horizons of the Permian age within the Khapchagai megawall, it is concluded that there are two types of deposits in the section of Nejelinsky formation. The rst type of deposits is gas-hydrodynamically limited in the volume of Nejelinsky formation and is genetically related to breakthrough gases from the Permian part of the section. The second type of deposits is gas-hydrodynamically related to deposits in the upper part of the Permian productive horizon. Due to the lack of its own gas formation potential in Nejelinsky formation outside the Khapchagai and Loglorsky shafts, it can only be considered as an e ective uid barrier. It is concluded that in the absence of isolated deposits in Nejelinsky formation, favorable reservoir properties in the Permian part of the section should be expected.
Сивцев, А. И. Природа газоносности неджелинской свиты / А. И. Сивцев, И. В. Рудых, Н. А. Сивцев ; 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. 26-32. - DOI: 10.25587/2587-8751-2023-4-26-32
DOI: 10.25587/2587-8751-2023-4-26-32
Количество страниц: 6 с.
As a result of the research, a conclusion was made about the high prospects for the growth of gas reserves of Andylakhskoye gas condensate eld-located within the Loglor swell of the Vilyui syneclise of the Sakha Republic (Yakutia). An increase in reserves is expected, both due to previously discovered deposits and new, more promising horizons located in the Permian deposits. It is proposed to set up seismic surveys using the 2D common depth point method within the eld and the adjacent, most promising areas to increase investment attractiveness, the rational use of natural resources, and increasing gas reserves of Andylakhskoe gas condensate eld. According to the results of the studies carried out in this article, the prospects for the growth of hydrocarbon reserves of Andylakhskoe gas condensate eld are estimated by over 10 times of the amount.
Рудых, И. В. Прирост запасов углеводородов Андылахского газоконденсатного месторождения (Якутия) с учетом специфики его геологического строения / И. В. Рудых ; Северо-Восточный федеральный университет им. М. К. Аммосова, Геологоразведочный факультет // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: Науки о земле. - 2023. - N 4 (32). - C. 20-25. - DOI: 10.25587/2587-8751-2023-4-20-25
DOI: 10.25587/2587-8751-2023-4-20-25
Количество страниц: 8 с.
The article presents the results of a microprobe study of the composition of phlogopite macrocrystals with inclusions of chrome spinelides from An-195 kimberlite body of the West Ukukit eld, Yakut kimber liteprovince. The purposeofthis study was toestablis hthegenesi sofsuchphlogopites: whe ther they are representatives of deep mantle matter or their formation is directly related to the formation of kimberlites composing An-195. It was found that the inclusions of chrome spinelides are con ned only to chromic non-zonal phlogopites or to chromic sites of zonal macrocrystals (Cr O 0.75-1.55 wt. %, TiO 2.67-3.84 wt. %, Mg# 83-88). Based on a 2 3 2 comparative analysis of the studied phlogopites and chromespinelides with the composition of analogues from the parageneses of these minerals in various mantle xenoliths of ultrabasic rocks, eclogites and rocks of the MARID series, it was concluded that these phlogopites most likely represent a phenocrystal association of kimberlite minerals. They clearly di er from phlogopites of the MARID series rocks with equal Mg# and TiO in higher 2 Al O contents; from phlogopites of ultrabasic mantle rocks xenoliths - generally with lower magnesia content. Phlogopites from eclogites have a generally higher Cr O content. Inclusions of high-chromium spinelides in 233+phlogopite (Cr O 44-50 wt. %, TiO 3-5.5 wt. %, Fe < 0.35 f.e.) correspond in composition to spinelides from 232cataclysmic dunites and are products of their recrystallization under the in uence of high-temperature mantle uid. 3+Inclusions of less chromic spinelides (Cr O 30-44 wt. %, TiO 4-7.5 wt. %, Fe > 0.35 fe) probably crystallized 232simultaneously with phlogopite macrocrystals and were captured by them during long-term co-growth.
Бабушкина, С. А. Фенокристаллы флогопита с включениями хромшпинелидов из неалмазоносных кимберлитов (на примере АН-195 Западно-Укукитского поля) / С. А. Бабушкина ; Институт геологии алмаза и благородных металлов // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: Науки о земле. - 2023. - N 4 (32). - C. 12-19. - DOI: 10.25587/2587-8751-2023-4-12-19
DOI: 10.25587/2587-8751-2023-4-12-19
Количество страниц: 7 с.
This article is about the XIV All-Russian open eld Olympiad for young geologists. Subject Olympiads are a competition of students where participants demonstrate their skills and knowledge in certain disciplines. The children’s and youth geological movement in Russia has a very rich history. Today, in the country, the promotion of geological knowledge among schoolchildren is carried out in accordance with the training program, innovative programs introduced as part of the implementation of the priority national project “Education”. The All-Russian elds Olympiads for young geologists are held by the Federal Agency for Subsoil Use in di erent regions of Russia every two years. The organizers of the Olympiad hope that thanks to the movement of young geologists, a new generation of highly professional specialists will grow up. The novelty of the article is the description of the participation in 2023 of a team of schoolchildren from Yakutia in the XIV All-Russian Field Olympiad in Geology in Tatarstan. The experience of the Yakut team Kimberlit should help the next participants of the Olympiad from the republic. Competitions and contests of the Olympiad are original, require nonstandard thinking and exibility of mind. However, many of the tasks of the Olympiad are composed by analogy with previous years. Therefore, an e ective way to prepare is to know the speci cs of the tasks of the Olympiads of previous years. Observation of the Kimberlite team during the competition allows us to state that the Geology Olympiad provides not only knowledge and skills, but also the experience of human communication, physical training, and everything that is necessary for a real geologist. Participation in the Olympiad is a great responsibility, especially for a representative of a subject of the federation.
Атласова, С. С. "Кимберлит" на XIV всероссийской открытой полевой олимпиаде юных геологов / С. С. Атласова ; Северо-Восточный федеральный университет им. М. К. Аммосова, Исторический факультет // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. Серия: Науки о земле - 2023. - N 4 (32). - C. 5-11. - DOI: 10.25587/2587-8751-2023-4-5-11
DOI: 10.25587/2587-8751-2023-4-5-11