Pub Date : 2023-07-03DOI: 10.37614/2949-1185.2023.2.2.003
B. Kozelov
A numerical model for predicting the parameters of solar activity — the number of sunspots R and the radioflux at a wave of 10.7 cm F10.7 ahead for 27 days — has been built. The numerical model uses an artificial neural network (NN) with LSTM (Long short-term memory) layers. For both the number of sunspots and the radioflux, the model predicts the levels and limits of variation of the values for 27 days. The average absolute prediction error of the model is less than 6 %. The real-time model is implemented on the site http://aurora.pgia.ru and can be an addition to long-term forecasts of other INTERNET resources.
{"title":"Prediction of solar activity time series using LSTM artificial neural network","authors":"B. Kozelov","doi":"10.37614/2949-1185.2023.2.2.003","DOIUrl":"https://doi.org/10.37614/2949-1185.2023.2.2.003","url":null,"abstract":"A numerical model for predicting the parameters of solar activity — the number of sunspots R and the radioflux at a wave of 10.7 cm F10.7 ahead for 27 days — has been built. The numerical model uses an artificial neural network (NN) with LSTM (Long short-term memory) layers. For both the number of sunspots and the radioflux, the model predicts the levels and limits of variation of the values for 27 days. The average absolute prediction error of the model is less than 6 %. The real-time model is implemented on the site http://aurora.pgia.ru and can be an addition to long-term forecasts of other INTERNET resources.","PeriodicalId":198792,"journal":{"name":"Transactions of the Kоla Science Centre. Series: Natural Sciences and Humanities","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116639409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-03DOI: 10.37614/2949-1185.2023.2.2.011
Y. Balabin, A. Germanenko, E. Maurchev, E. Mikhalko, B. Gvozdevsky
The work is devoted to the study of a little-studied phenomenon: an increase in X-ray and gamma radiation coming from the atmosphere during precipitation. In this work, attention is focused on the analysis of long-term increase events, which occur rarely and differ from typical increase events in slow growth and the presence of many maxima. A differential spectrum meter for electromagnetic radiation in the range of 0.1–4 MeV is used. An analysis of the spectra measured in long-term increase events showed that the characteristics of the spectra do not differ from the same characteristics in ordinary increases. It is concluded that long-term events do not differ from ordinary ones and are due to the same reasons.
{"title":"Spectral characteristics of x-ray and gamma radiation in long-term growth events","authors":"Y. Balabin, A. Germanenko, E. Maurchev, E. Mikhalko, B. Gvozdevsky","doi":"10.37614/2949-1185.2023.2.2.011","DOIUrl":"https://doi.org/10.37614/2949-1185.2023.2.2.011","url":null,"abstract":"The work is devoted to the study of a little-studied phenomenon: an increase in X-ray and gamma radiation coming from the atmosphere during precipitation. In this work, attention is focused on the analysis of long-term increase events, which occur rarely and differ from typical increase events in slow growth and the presence of many maxima. A differential spectrum meter for electromagnetic radiation in the range of 0.1–4 MeV is used. An analysis of the spectra measured in long-term increase events showed that the characteristics of the spectra do not differ from the same characteristics in ordinary increases. It is concluded that long-term events do not differ from ordinary ones and are due to the same reasons.","PeriodicalId":198792,"journal":{"name":"Transactions of the Kоla Science Centre. Series: Natural Sciences and Humanities","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129105154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-03DOI: 10.37614/2949-1185.2023.2.2.007
Zh. V. Dashkevich, V. Ivanov
A method for calculating synthetic emission spectra of systems of triplet levels of molecular nitrogen is presented: Vegard- VK N2(A^3 Σ_u^+→X^1 Σ_g^+), the first positive system 1PG N2(〖 B〗^3 Π_g→A^3 Σ_u^+), the second positive system 2PG N2(C^3 Π_u→B^3 Π_g). The individual structures of the corresponding molecules are taken into account. The populations of the vibrational levels of the triplet states are calculated taking into account the energy transfer between triplet levels in collisional reactions and the intramolecular redistribution of energy. Examples of calculation of synthetic spectra are presented.
{"title":"Method of calculation of synthetic emission spectra of triplet states of molecular nitrogen in apolars","authors":"Zh. V. Dashkevich, V. Ivanov","doi":"10.37614/2949-1185.2023.2.2.007","DOIUrl":"https://doi.org/10.37614/2949-1185.2023.2.2.007","url":null,"abstract":"A method for calculating synthetic emission spectra of systems of triplet levels of molecular nitrogen is presented: Vegard- VK N2(A^3 Σ_u^+→X^1 Σ_g^+), the first positive system 1PG N2(〖 B〗^3 Π_g→A^3 Σ_u^+), the second positive system 2PG N2(C^3 Π_u→B^3 Π_g). The individual structures of the corresponding molecules are taken into account. The populations of the vibrational levels of the triplet states are calculated taking into account the energy transfer between triplet levels in collisional reactions and the intramolecular redistribution of energy. Examples of calculation of synthetic spectra are presented.","PeriodicalId":198792,"journal":{"name":"Transactions of the Kоla Science Centre. Series: Natural Sciences and Humanities","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127202208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-03DOI: 10.37614/2949-1185.2023.2.2.001
Y. Balabin, A. Germanenko, E. Maurchev, E. Mikhalko, B. Gvozdevsky
The first results of the operation of a pair of muon telescopes installed at the Apatity and Barentsburg stations (Svalbard) in addition to the existing neutron monitors are presented. A technique for separating small variations against the background of stronger variations caused by solar activity is proposed. With its help, a small anisotropy of cosmic rays between the directions of reception of muon telescopes was revealed. It is still difficult to judge the reasons for such anisotropy, since the period of solar activity is 11 years, and observations were made for just over a year
{"title":"Muon telescopes of the polar stations Apatity and Barentsburg for observations of small variations of cosmic rays","authors":"Y. Balabin, A. Germanenko, E. Maurchev, E. Mikhalko, B. Gvozdevsky","doi":"10.37614/2949-1185.2023.2.2.001","DOIUrl":"https://doi.org/10.37614/2949-1185.2023.2.2.001","url":null,"abstract":"The first results of the operation of a pair of muon telescopes installed at the Apatity and Barentsburg stations (Svalbard) in addition to the existing neutron monitors are presented. A technique for separating small variations against the background of stronger variations caused by solar activity is proposed. With its help, a small anisotropy of cosmic rays between the directions of reception of muon telescopes was revealed. It is still difficult to judge the reasons for such anisotropy, since the period of solar activity is 11 years, and observations were made for just over a year","PeriodicalId":198792,"journal":{"name":"Transactions of the Kоla Science Centre. Series: Natural Sciences and Humanities","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131909555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-03DOI: 10.37614/2949-1185.2023.2.2.005
V. Belakhovsky, Yaqi Jin, Miloch Wojciech
It is performed an analysis of the influence of ionosphere disturbances on GPS scintillations at the auroral oval using receiver at Skibotn station (SKN, CGM — 66.28N, 103.41E). The ionosphere parameters were determined using EISCAT UHF radar data. We analyze the events for the years 2015-2022 when the GPS and EISCAT data were available. In this paper we present typical events. The optical aurora observations at Skibotn stations in 557.7 and 630.0nm spectrum lines were used as well. It is shown that the strongest GPS phase scintillations (σΦ > 1) were produced by the ionosphere disturbances in the E-region (100–120 km), these disturbances were accompanied by the appearance of the auroral arcs. Ionosphere disturbances in the F-region (> 200 km) do not produce any significant phase scintillations. The night-time and evening substorms accompanied by the negative magnetic bay produce strongest GPS phase scintillations. At the same time, positive magnetic bays, associated with the growth of the eastern electrojet, during magnetic storm produce comparable phase scintillation as night-time substorms. We did not find a clear growth of the amplitude scintillations during considered events.
{"title":"The contribution of the ionospheric disturbances registered by EISCAT radar to GPS signal scintillations","authors":"V. Belakhovsky, Yaqi Jin, Miloch Wojciech","doi":"10.37614/2949-1185.2023.2.2.005","DOIUrl":"https://doi.org/10.37614/2949-1185.2023.2.2.005","url":null,"abstract":"It is performed an analysis of the influence of ionosphere disturbances on GPS scintillations at the auroral oval using receiver at Skibotn station (SKN, CGM — 66.28N, 103.41E). The ionosphere parameters were determined using EISCAT UHF radar data. We analyze the events for the years 2015-2022 when the GPS and EISCAT data were available. In this paper we present typical events. The optical aurora observations at Skibotn stations in 557.7 and 630.0nm spectrum lines were used as well. It is shown that the strongest GPS phase scintillations (σΦ > 1) were produced by the ionosphere disturbances in the E-region (100–120 km), these disturbances were accompanied by the appearance of the auroral arcs. Ionosphere disturbances in the F-region (> 200 km) do not produce any significant phase scintillations. The night-time and evening substorms accompanied by the negative magnetic bay produce strongest GPS phase scintillations. At the same time, positive magnetic bays, associated with the growth of the eastern electrojet, during magnetic storm produce comparable phase scintillation as night-time substorms. We did not find a clear growth of the amplitude scintillations during considered events.","PeriodicalId":198792,"journal":{"name":"Transactions of the Kоla Science Centre. Series: Natural Sciences and Humanities","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133765022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-29DOI: 10.37614/2949-1185.2023.2.3.013
S. Chaus
This article provides data on size-age composition and growth rate of arctic staghorn sculpin Gymnocanthus tricuspis (Reinhardt, 1830) in the Kara Sea. Sculpins aged from 1+ to 7+ years, total length (TL) 4.5–19.5 cm long, and weighing 0.8–111.0 g were registered in catches. It is known that during the first three years of life, body sizes of males and females of this species are comparable, but from the fourth year onwards, females grow much faster; that’s the reason why length and weight of fish with the same age may be significantly different. Individuals of G. tricuspis with a TL 9.0–11.0 сm and age 4+ dominated.
{"title":"Some data about growth and age of Arctic staghorn sculpin Gymnocanthus tricuspis (Reinhardt, 1830) in the Kara Sea","authors":"S. Chaus","doi":"10.37614/2949-1185.2023.2.3.013","DOIUrl":"https://doi.org/10.37614/2949-1185.2023.2.3.013","url":null,"abstract":"This article provides data on size-age composition and growth rate of arctic staghorn sculpin Gymnocanthus tricuspis (Reinhardt, 1830) in the Kara Sea. Sculpins aged from 1+ to 7+ years, total length (TL) 4.5–19.5 cm long, and weighing 0.8–111.0 g were registered in catches. It is known that during the first three years of life, body sizes of males and females of this species are comparable, but from the fourth year onwards, females grow much faster; that’s the reason why length and weight of fish with the same age may be significantly different. Individuals of G. tricuspis with a TL 9.0–11.0 сm and age 4+ dominated.","PeriodicalId":198792,"journal":{"name":"Transactions of the Kоla Science Centre. Series: Natural Sciences and Humanities","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114550614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-26DOI: 10.37614/2949-1185.2023.2.3.009
A. E. Noskovich
The features of the distribution and biology of the bivalve mollusk Macoma calcarea in the fjords of Western Svalbard with different hydrological regimes in 2019 have been established. Two groups of settlements are distinguished, differing in terms of abundance, size and age structure, and growth rate. The most favorable conditions for the formation of colonies with high abundance, diverse size and age structure, and high lifespan of M. calcarea were noted in the Atlantic and transformed Atlantic water masses with a temperature of more than 2 oC in Grenfjord Inlet and Koles Bay, due to the influence of the warm Atlantic currents. The least favorable conditions are typical for fjords with negative water temperatures and high salinity in the layer of winter water masses (Sturfjord), where an unstable settlement with low abundance, high growth rate and shorter life expectancy has formed.
{"title":"Population characteristics of the bivalve mollusk Macoma calcarea (Gmelin, 1791) in fjords with different hydrological regime (Svalbard)","authors":"A. E. Noskovich","doi":"10.37614/2949-1185.2023.2.3.009","DOIUrl":"https://doi.org/10.37614/2949-1185.2023.2.3.009","url":null,"abstract":"The features of the distribution and biology of the bivalve mollusk Macoma calcarea in the fjords of Western Svalbard with different hydrological regimes in 2019 have been established. Two groups of settlements are distinguished, differing in terms of abundance, size and age structure, and growth rate. The most favorable conditions for the formation of colonies with high abundance, diverse size and age structure, and high lifespan of M. calcarea were noted in the Atlantic and transformed Atlantic water masses with a temperature of more than 2 oC in Grenfjord Inlet and Koles Bay, due to the influence of the warm Atlantic currents. The least favorable conditions are typical for fjords with negative water temperatures and high salinity in the layer of winter water masses (Sturfjord), where an unstable settlement with low abundance, high growth rate and shorter life expectancy has formed.","PeriodicalId":198792,"journal":{"name":"Transactions of the Kоla Science Centre. Series: Natural Sciences and Humanities","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127708257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-26DOI: 10.37614/2949-1185.2023.2.3.007
Maksim V. Mityaev, Marina V. Gerasimova, E. Druzhkova, T. G. Ishkulova, M. Menshakova
In the period from January 2, 2018 to December 30, 2022, a comprehensive study of solid atmospheric precipitation was carried out in Murmansk and its environs. Data were obtained on the concentration in freshly fallen snow of solid insoluble particles (9.19±0.51 mg/l) and their components: heavy metals (zinc – 60.1±9.8 ng/g, copper – 11.0±2.6 ng/g, lead – 3.28±0.18 ng/g, cadmium – 0.859±0.096 ng/g), nutrients (nitrates – 79±11 µg-at/l, nitrites – 1.02±0.14 µg-at/l, phosphates – 4.64±0.67 µg-at/l, silicates – 25±5 µg-at/l) and organic matter (21.2±2.2 mg/l), as well as the amount of polymer particles (fragments – 7766±1401 particles per liter, micro-fibers – 638±134 threads per liter, macro-fibers – 29±4 threads per liter). The relationship between the number of insoluble particles and the direction of air masses inflow was revealed. Air masses coming from the Barents Sea brought solid precipitation with less insoluble aerosols (including heavy metals, polymer particles and organic matter) than air masses coming from the continent. The amount of biogenic elements in solid atmospheric precipitation does not depend on the direction of inflow of air masses.
{"title":"Solid atmospheric precipitation in Murmansk and its environs","authors":"Maksim V. Mityaev, Marina V. Gerasimova, E. Druzhkova, T. G. Ishkulova, M. Menshakova","doi":"10.37614/2949-1185.2023.2.3.007","DOIUrl":"https://doi.org/10.37614/2949-1185.2023.2.3.007","url":null,"abstract":"In the period from January 2, 2018 to December 30, 2022, a comprehensive study of solid atmospheric precipitation was carried out in Murmansk and its environs. Data were obtained on the concentration in freshly fallen snow of solid insoluble particles (9.19±0.51 mg/l) and their components: heavy metals (zinc – 60.1±9.8 ng/g, copper – 11.0±2.6 ng/g, lead – 3.28±0.18 ng/g, cadmium – 0.859±0.096 ng/g), nutrients (nitrates – 79±11 µg-at/l, nitrites – 1.02±0.14 µg-at/l, phosphates – 4.64±0.67 µg-at/l, silicates – 25±5 µg-at/l) and organic matter (21.2±2.2 mg/l), as well as the amount of polymer particles (fragments – 7766±1401 particles per liter, micro-fibers – 638±134 threads per liter, macro-fibers – 29±4 threads per liter). The relationship between the number of insoluble particles and the direction of air masses inflow was revealed. Air masses coming from the Barents Sea brought solid precipitation with less insoluble aerosols (including heavy metals, polymer particles and organic matter) than air masses coming from the continent. The amount of biogenic elements in solid atmospheric precipitation does not depend on the direction of inflow of air masses.","PeriodicalId":198792,"journal":{"name":"Transactions of the Kоla Science Centre. Series: Natural Sciences and Humanities","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126424349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-26DOI: 10.37614/2949-1185.2023.2.3.006
T. M. Maksimovskaya
The thermohaline characteristics of the waters and the specificities of the hydrological regime of the Zelenetskaya Bay in the summer are analyzed. The location of the Bay, its relevance for scientific research and recreational use determine its importance as a model reservoir in the coast of East Murman (Kola Peninsula). The materials allow us to get an idea of the modern nuances of the hydrological regime of coastal waters. Over the past two decades, much less attention has been paid to such studies than to studies of the open part of the Barents Sea. The presented data of oceanographic observations were obtained in July 2021 during the expedition of the MMBI RAS to the R/V “Dalniye Zelentsy”. It is shown that in the studied area and in the Murmansk coast, in general, tidal currents play an important role in the formation of the thermohaline state of waters. Also important is the continental runoff, which has a desalinating effect locally in the lips of the peninsula. Additional information was obtained on the features of the distribution of desalinated water mass formed in the Zelenetskaya Bay and localized along the inner line of the islands.
{"title":"Hydrological studies of Zelenetskaya Bay in the summer of 2021","authors":"T. M. Maksimovskaya","doi":"10.37614/2949-1185.2023.2.3.006","DOIUrl":"https://doi.org/10.37614/2949-1185.2023.2.3.006","url":null,"abstract":"The thermohaline characteristics of the waters and the specificities of the hydrological regime of the Zelenetskaya Bay in the summer are analyzed. The location of the Bay, its relevance for scientific research and recreational use determine its importance as a model reservoir in the coast of East Murman (Kola Peninsula). The materials allow us to get an idea of the modern nuances of the hydrological regime of coastal waters. Over the past two decades, much less attention has been paid to such studies than to studies of the open part of the Barents Sea. The presented data of oceanographic observations were obtained in July 2021 during the expedition of the MMBI RAS to the R/V “Dalniye Zelentsy”. It is shown that in the studied area and in the Murmansk coast, in general, tidal currents play an important role in the formation of the thermohaline state of waters. Also important is the continental runoff, which has a desalinating effect locally in the lips of the peninsula. Additional information was obtained on the features of the distribution of desalinated water mass formed in the Zelenetskaya Bay and localized along the inner line of the islands.","PeriodicalId":198792,"journal":{"name":"Transactions of the Kоla Science Centre. Series: Natural Sciences and Humanities","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126292000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-26DOI: 10.37614/2949-1185.2023.2.3.001
O. Bondarev
The species composition of the ichthyofauna of Belokamennaya Bay were carried out from May to October 2022 was studied. 10 species of fish belonging to 6 families were found in the study area. Most of the species belong to the boreal complex. The commercial status in the Barents Sea has seven (70 %) species of fish. The European flounder Platichthys flesus (Linnaeus, 1758) dominated in abundance (35 %) and the pollock Pollachius virens (Linnaeus, 1758) (33 %). In terms of biomass, a large share of the catch (43.6 %) was occupied by European flounder, and the European sculpin Myoxocephalus scorpius (Linnaeus, 1758) also accounted for a significant part – 22.2 %.
{"title":"Species composition of fish of Belokamennaya Bay (Kola Inlet) marked in May and August–October 2022","authors":"O. Bondarev","doi":"10.37614/2949-1185.2023.2.3.001","DOIUrl":"https://doi.org/10.37614/2949-1185.2023.2.3.001","url":null,"abstract":"The species composition of the ichthyofauna of Belokamennaya Bay were carried out from May to October 2022 was studied. 10 species of fish belonging to 6 families were found in the study area. Most of the species belong to the boreal complex. The commercial status in the Barents Sea has seven (70 %) species of fish. The European flounder Platichthys flesus (Linnaeus, 1758) dominated in abundance (35 %) and the pollock Pollachius virens (Linnaeus, 1758) (33 %). In terms of biomass, a large share of the catch (43.6 %) was occupied by European flounder, and the European sculpin Myoxocephalus scorpius (Linnaeus, 1758) also accounted for a significant part – 22.2 %.","PeriodicalId":198792,"journal":{"name":"Transactions of the Kоla Science Centre. Series: Natural Sciences and Humanities","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121959527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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