Results of fundamental and applied seismological research in the Magadan region in 2016-2020

The results of fundamental and applied research, carried out by Magadan Branch of GS RAS during 2016-2020 in Magadan and Chukotka regions are presenting. Estimation of Seismic hazard of Russia’s Northeast (Magadan region) and seismic hazard maps for recurrence periods of 500, 1000 and 5000 years in scale close to that of detailed seismic zoning (DSZ) were made in cooperation with Institute of the Earth’s Physics RAS. In course of this work the estimation of initial seismic intensity and parameters of possible ground shaking in areas of critical facilities of Magadan region were made. For all of them a seismic micro zonation was carried out with methods of direct earthquake registration and comparing acoustic impedance. As result, a seismic amplification and intensity of seismic impact on the soils under main critical facilities were obtaining. The research results are shown on detailed seismic zoning maps that are basic for building projects of objects above.

Phylogenetic position of Phlojodicarpus villosus (Apiaceae) based on ITS and trnH-psbA nucleotide sequences

The aim of our work was to obtain chloroplast (trnH-psbA) and nuclear (ITS1-ITS2) DNA nucleotide sequences and identify the phylogenetic position of Phlojodicarpus villosus (Apiaceae). This species of vascular plants is represented in the Urals by isolated relic populations and is included in the regional Red Data Books. There is no data on P. villosus nucleotide sequences in the international open genetic databases. We studied two herbarium specimens of P. villosus, one collected from the Ural part of its range in the Komi Republic (Northern Urals) and the second collected from the main part of its range in the Magadan Region (Kolyma Highlands). Combining nuclear and chloroplast markers made it possible to reliably determine phylogenetic position of P. villosus within the tribe Selineae (subfamily Apioideae, family Apiaceae). We found ITS1-ITS2 and trnH-psbA nucleotide sequences to be sufficiently informative to identify specimens of this genus. High polymorphism of P. villosus sequences obtained from different parts of its range (Northern Urals and Kolyma Highlands) and the presence of evolutionary events (deletions) require more detail study of P. villosus and other Phlojodicarpus taxa by DNA barcoding methods.

SEISMICITY of the NORTH-EAST of RUSSIA in 2015

The results of seismic monitoring of the Magadan oblast, the Chukotka Autonomous okrug, and the shelves of the adjacent seas (Okhotsk, Chukchi, Bering, and East Siberian seas) are considered. There were 14 seismic stations working in the region. The new station “Gadlya” was opened on the Okhotsk sea coast. The catalog includes information about 290 earthquakes with energy classes KR=4.4–12.6. As usual, most of them (93 %) are localized in the Kolyma region. The total seismic energy released within the region’s borders was ΣЕ=4.6341012 J. According to the earthquake energy completeness map Кmin built for the region, minimal energy level of earthquakes, Кmin=5.0, is provided at two areas near the Susuman and Magadan stations. The station network can register without omissions the earthquakes with Kmin≥8 at the Okhotsk sea and Kolyma areas, with Kmin≥10.6 in the Chukotka area. In 2015 three earthquakes with intensities I=2–4 by MSK-64 scale were felt in settlements of North East of Russia. The 2015 strongest earthquake occurred on June 1 at 10h53m with KR=12.6 (MPSP=4.9), h=31 km in the Kolyma area. A maximum shaking intensity of I=4 was observed in Omsukchan settlement (∆=132 km). In March 2015 a swarm of 29 weak earthquakes with KR=6.2–9.8 occurred northeast of Talaya settlement. Epicenters of Kolyma area earthquakes were plotted on the tectonic zoning map of the Magadan region. Most earthquakes are confined to the main deep faults oriented in the northeastern and sublatitudinal directions. All hypocenters are located within the Earth's crust. The seismicity level of the North-East of Russia in 2015 according to the “SOUS09” scale was assessed as "background average" for the observation period from 1968 to 2015. Spatially, all earthquakes in the North-East of Russia are traditionally concentrated within the major seismogenic belts – Chersky, North-Okhotsk, and Trans-Beringian.

Language Situation in the Far North-East of Russia at the Border of the 20th–21st centuries

The article describes a specific linguistic situation that developed in the Far North-East of Russia (CWS) using the example of the Magadan region in the late 20th – early 21st centuries. The study used theoretical and empirical general scientific methods (analysis, synthesis, observation and generalization), as well as proper linguistic and sociolinguistic modifications of general scientific methods (quantitative and conceptual analysis, inclusive observation, interviewing native speakers). The main extralinguistic factors, under the influence of which the modern linguistic situation was formed, were determined: harsh climatic conditions, low population density, poorly developed transport infrastructure, remoteness from centers of science and culture, the presence of an autochthonous population, a heterogeneous and unstable composition of inhabitants, etc. It is proved that the combination of the influence of extralinguistic factors with the action of internal linguistic laws has led to the formation of a special linguistic situation on the CWS, which is characterized by the following features: the presence of borrowings from the languages of the indigenous peoples of the North, minimization of dialectal influence, the existence of a particular Kolyma regional dialect functioning in the region. As an illustration, there are examples of lexemes borrowed from the languages of autochthonous ethnic groups in the Russian literary language, in old-time dialects, in the Kolyma region. The article covers the issue of old-timers' dialects that have survived in certain settlements of the Magadan region but do not have an impact on the speech of the Kolyma residents today. The structure of the lexical-semantic level of the Kolyma region is described, it is represented by several types of localisms: semantic, lexical, relative and substratum regionalisms. The conclusion is made about the formation of a special linguistic situation in the Far North-East of Russia, which, on the one hand, is in many respects specific, and on the other hand, corresponds to the global trends in the development of language systems.

Grassland management as the factor increasing the effectiveness of swards in the Magadan region

Использующаяся на сегодняшний день в хозяйствах Магаданской области система кормопроизводства не покрывает потребностей животноводческого комплекса в полной мере и в большинстве случаев ограничивается выращиванием силосных культур, корнеплодов и однолетних трав, в частности овса. Посевы однолетних кормовых трав позволяют получать в благоприятные по погодным условиям периоды довольно высокие урожаи, но отличаются крайне нестабильной продуктивностью по годам, что исключает их использование как основу для развития системы регионального кормопроизводства. В статье приводится анализ результатов многолетних исследований, проводимых в ФГБНУ «Магаданский НИИСХ», по разработке адаптивных технологий кормопроизводства аборигенных многолетних трав и формированию на их основе устойчивых, продуктивных и долголетних лугов. В основу региональной практики вошли пять видов дикорастущих многолетних злаковых трав: арктагростис широколистный (Arctagrostis latifolia (R. Brown) Griseb.), бекмания восточная (Beckmannia syzigachne (Steudal) Fern.), лисохвост тростниковый (Alopecurus arundinaceus Poir. (A. ventricosus Pers.), колосняк мягкий (Leymus mollis (Trinius) Hara), арктомятлик высокий (Arctopoa altus). Характерной особенностью этих видов, наряду с высокими качественными и количественными показателями продуктивности, является их приспособленность к суровым условиям Севера. Использование аборигенных трав в системе местного кормопроизводства позволит значительно сократить материальные затраты на регулярную закупку кормов и семян кормовых трав, увеличить экологический ареал эффективного луговодства за счёт их высокой способности к адаптации в сложных местных условиях на фоне снижения антропогенного воздействия на окружающую среду. Формирование лугов на основе долголетних, нередко длиннокорневищных северных экотипов многолетних трав, создающих плотную дернину, с густым высоким травостоем с преобладанием при регулярной подкормке вегетативных побегов, наряду с обеспечением отрасли животноводства полноценными кормами собственного производства позволит защитить почву от деградации, воздействия водной и ветровой эрозии. Currently the sphere of forage production doesn’t fully satisfy the needs of animal husbandry in the Magadan region and mostly provides silage, root crops and perennial grasses such as oats. Annual crops produce rather high yields but only under favorable conditions. This article reports on the long-term investigation conducted at the Magadan Agricultural Research Institute. The aim was to develop a cultivation technique for wild perennial grasses to obtain stable and high-productive swards. Five wild gramineous were used in the experiment: Arctagrostis latifolia (R. Brown) Griseb., Beckmannia syzigachne (Steudal) Fern., Alopecurus arundinaceus Poir. (A. ventricosus Pers.), Leymus mollis (Trinius) Hara, Arctopoa altus. Along with high forage quality and productivity these species are well adapted to severe northern environment. Introduction of wild grasses into local forage production system is able to reduce significantly purchase costs for forage and seeds, broaden the area of grassland management due to their high resistance, and decrease anthropogenic impact on the environment. Northern ecotypes of perennial grasses often have long roots forming dense sod layers and tall swards with high proportion of vegetative shoots under regular fertilization. These qualities can protect soil from degradation as well as water and wind erosions.

Retrospective analysis of the prevalence of abortions in the Magadan region for the period 2015–2020

По оценкам ВОЗ, ежегодно во всем мире законно прерывается 26 миллионов беременностей, а 20 миллионов прерываются незаконно, из них более 78 000 случаев заканчиваются летальным исходом. Основными опасными для жизни осложнениями, возникающими в результате наименее безопасных абортов, являются кровотечения, инфекции и повреждения половых путей и внутренних органов

Analysis of the prevalence of COVID-19 and forecasting its development in the Magadan region

Целью исследования является создание математической и экологической модели распространения COVID-19 и прогнозирования числа заболевших в Магаданской области. На основе данных заболеваемости в регионе в период с 31 марта 2020 года по 21 апреля 2021 года была получена статистическая сводка и подобраны оптимальные эпидемические модели для анализа заболеваемости во временном промежутке времени, и получена прогностическая модель.