Pub Date : 1900-01-01DOI: 10.31433/2618-9593-2021-24-4-35-49
A. M. Petrishchevsky
Results of the correlation analysis of heat flow anomalies with distributions of density contrast (µz-parameter) in rifting and plume structures on eastern margin of Asia which prove selective return correlation of these parameters in intervals of depths corresponding to the provision of the subcrustal viscous layer (the deep interval 25–45 км) and astenosphere (the deep interval 70–90 км) are considered. The South-Okhotsk rift has anomalous characteristic, where subcrustal layer locates at the depth of 10–25 km, and astenosphere – 45–55 km. In most regions (South Okhotsk, Sea of Japan, Cathaysia) main contribution to the heat flow brings a subcrustal viscous layer, but in the Indigiro-Kolimsky – asthenosphere contribution is prevailed over subcrustal one. The heat flow from an asthenosphere on Ceinozoic borders of lithospheric plates is screened by subduction’s slabs. In the Chenzhou–Linwu fault zone at the boundary of the Yangtze plate and Cathaysia block the wide stretch-shear zone in lithosphere is revealed. The late is displayed by the density contrast minima at the depth interval of 30–100 km and heat flow anomalies. in this zone, on geological data, manifestations of stretching, viscous shear and oblique subduction are detected. The main contribution to thermal anomalies in rift structures is made by a subcrustal viscous layer. Identical correlation of Q and µz-параметра in the areas removed from each other testifies to an identical deep structure and universality of tectonic states on eastern margins of the Asia where in space and time subduction’s rifting and plume processes are interfaced. Key words: heat flow, upper mantle, density contrast, rheology, Eastern Asia.
{"title":"CONNECTION OF HEAT FLOW ANOMALIES WITH ZONES OF RHEOLOGICAL LOWER DENSITY CONTRAST IN UPPER MANTLE OF THE EASTERN ASIAN MARGINS","authors":"A. M. Petrishchevsky","doi":"10.31433/2618-9593-2021-24-4-35-49","DOIUrl":"https://doi.org/10.31433/2618-9593-2021-24-4-35-49","url":null,"abstract":"Results of the correlation analysis of heat flow anomalies with distributions of density contrast (µz-parameter) in rifting and plume structures on eastern margin of Asia which prove selective return correlation of these parameters in intervals of depths corresponding to the provision of the subcrustal viscous layer (the deep interval 25–45 км) and astenosphere (the deep interval 70–90 км) are considered. The South-Okhotsk rift has anomalous characteristic, where subcrustal layer locates at the depth of 10–25 km, and astenosphere – 45–55 km. In most regions (South Okhotsk, Sea of Japan, Cathaysia) main contribution to the heat flow brings a subcrustal viscous layer, but in the Indigiro-Kolimsky – asthenosphere contribution is prevailed over subcrustal one. The heat flow from an asthenosphere on Ceinozoic borders of lithospheric plates is screened by subduction’s slabs. In the Chenzhou–Linwu fault zone at the boundary of the Yangtze plate and Cathaysia block the wide stretch-shear zone in lithosphere is revealed. The late is displayed by the density contrast minima at the depth interval of 30–100 km and heat flow anomalies. in this zone, on geological data, manifestations of stretching, viscous shear and oblique subduction are detected. The main contribution to thermal anomalies in rift structures is made by a subcrustal viscous layer. Identical correlation of Q and µz-параметра in the areas removed from each other testifies to an identical deep structure and universality of tectonic states on eastern margins of the Asia where in space and time subduction’s rifting and plume processes are interfaced. Key words: heat flow, upper mantle, density contrast, rheology, Eastern Asia.","PeriodicalId":368004,"journal":{"name":"REGIONAL PROBLEM","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130763587","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 : 1900-01-01DOI: 10.31433/2618-9593-2023-26-1-65-71
A. Livenets
Non-standard forms of employment are getting more widespread in the Russian labor market. In the Jewish Autonomous region, however, a standard employment prevail with the population. In this work, the author considers the popularity of non-standard employment in the region using the residents survey data on non-standard employment. They were asked questions about the reasons for choosing a non-standard employment, willingness to receive additional education and skills, develop alternative forms of employment at present, and about their need for assistance from the state. It was found that most residents in the JAR felt like choosing a standard employment as a basic one. The non-standard employment is not that popular in the region, and the respondents choice of non-standard employments is mostly based on their desire to improve material well-being. Basically, the JAR population is inactive and not ready to receive additional education, develop new skills, or start business of their own. In part, this can be explained by the lack of information about the business assistance centers. Half of the respondents do not know about them, others never use their services; some people do not believe in such centers effectiveness. Only one third of the respondents see good prospects for business development in the region. Most people believe that the state financial support is not sufficient, and the region needs it in the form of preferential loans and tax-free period.
{"title":"POPULARITY OF NON-STANDARD EMPLOYMENT of the population IN JEWISH AUTONOMUS REGION","authors":"A. Livenets","doi":"10.31433/2618-9593-2023-26-1-65-71","DOIUrl":"https://doi.org/10.31433/2618-9593-2023-26-1-65-71","url":null,"abstract":"Non-standard forms of employment are getting more widespread in the Russian labor market. In the Jewish Autonomous region, however, a standard employment prevail with the population. In this work, the author considers the popularity of non-standard employment in the region using the residents survey data on non-standard employment. They were asked questions about the reasons for choosing a non-standard employment, willingness to receive additional education and skills, develop alternative forms of employment at present, and about their need for assistance from the state. It was found that most residents in the JAR felt like choosing a standard employment as a basic one. The non-standard employment is not that popular in the region, and the respondents choice of non-standard employments is mostly based on their desire to improve material well-being. Basically, the JAR population is inactive and not ready to receive additional education, develop new skills, or start business of their own. In part, this can be explained by the lack of information about the business assistance centers. Half of the respondents do not know about them, others never use their services; some people do not believe in such centers effectiveness. Only one third of the respondents see good prospects for business development in the region. Most people believe that the state financial support is not sufficient, and the region needs it in the form of preferential loans and tax-free period.","PeriodicalId":368004,"journal":{"name":"REGIONAL PROBLEM","volume":"237 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121293061","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 : 1900-01-01DOI: 10.31433/2618-9593-2022-25-1-3-15
V. Makarenko, D. Fetisov, D. V. Zhuchkov
In the review article, the authors give the analysis of scientific publications related to the study of vegetation in small and medium-sized Russian towns over the past 10 years. The main topical areas in which research is currently being carried out include the study of urban flora, analysis of plantings state, assessment of the vegetation state as an indicator of the urban environment quality (bio-indication), selection of trees assortment for urban andscape design and introduction of species, the features of landscaping in different natural conditions, and the formation of urban ecological framework. It is noted the fragmentary nature of vegetation studies in small and medium-sized towns of Russia, not being conducted in most regions at all. There predominate empirical studies focused on describing the state of the vegetation cover in separate towns. Comprehensive research is not carried out widely. It is mainly used the inventory research methods. In the publications, there are no vegetation maps for small and medium-sized towns. Furthermore, there is no retrospective analysis of the urban flora and vegetation transformation. The authors of the most publications note the prevalence of inherited problems in the state of urban green spaces in the country, caused by the planning spontaneity in the Soviet period, the failure to incorporate environmental factors into the urban development planning, including the location of industrial enterprises, as well as the lack of programs for the development of green urban infrastructure, the perception of green plantings as an element of land improvement, rather than an environmentally significant factor.
{"title":"STUDY OF SMALL AND MEDIUM-SIZE TOWNS VEGETATION IN RUSSIA: CURRENT STATE","authors":"V. Makarenko, D. Fetisov, D. V. Zhuchkov","doi":"10.31433/2618-9593-2022-25-1-3-15","DOIUrl":"https://doi.org/10.31433/2618-9593-2022-25-1-3-15","url":null,"abstract":"In the review article, the authors give the analysis of scientific publications related to the study of vegetation in small and medium-sized Russian towns over the past 10 years. The main topical areas in which research is currently being carried out include the study of urban flora, analysis of plantings state, assessment of the vegetation state as an indicator of the urban environment quality (bio-indication), selection of trees assortment for urban andscape design and introduction of species, the features of landscaping in different natural conditions, and the formation of urban ecological framework. It is noted the fragmentary nature of vegetation studies in small and medium-sized towns of Russia, not being conducted in most regions at all. There predominate empirical studies focused on describing the state of the vegetation cover in separate towns. Comprehensive research is not carried out widely. It is mainly used the inventory research methods. In the publications, there are no vegetation maps for small and medium-sized towns. Furthermore, there is no retrospective analysis of the urban flora and vegetation transformation. The authors of the most publications note the prevalence of inherited problems in the state of urban green spaces in the country, caused by the planning spontaneity in the Soviet period, the failure to incorporate environmental factors into the urban development planning, including the location of industrial enterprises, as well as the lack of programs for the development of green urban infrastructure, the perception of green plantings as an element of land improvement, rather than an environmentally significant factor.","PeriodicalId":368004,"journal":{"name":"REGIONAL PROBLEM","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123777121","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 : 1900-01-01DOI: 10.31433/2618-9593-2022-25-1-16-30
A. I. Talskikh, A. Kopanina, I. I. Vlasova
The authors studied structural changes in the tissues of bark of annual stem Betula ermanii Cham. (Betulaceae Gray) under various environmental conditions. They collected the Betula ermanii samples in typical for this species conditions, characteristic of the Sakhalin Island, Krasnaya Mountain, Starozavodsky solfatara field, Baransky Volcano on the island of Iturup, and the Blue Lakes thermal springs area. A comparative quantitative analysis of the anatomical features of bark of annual stem made it possible to identify unidirectional structural changes in the conditions of gas-hydrothermal outcrops of Baransky Volcano, both upward and downward. These parameters include a number of crystals in cortex and phloem parenchyma, sieve tube diameters, the total number of ph loem rays and the uniseriate rays’ quantity, and the length of uniseriate phloem rays. The rest of bark tissue parameters of annual stem Betula ermanii from the studied habitats either showed no significant change, or changed in only one of the habitats with unfavorable conditions. The phellem width, the number of phellem cells in the radial row, and width of secondary phloem are modified in the Starozavodskoye solfatara field. The specific area of protophloem fibers and sclereids is changed under the conditions of thermal Blue Lakes. Thus, the structural response of annual stem Betula ermanii bark under extreme conditions of gas-hydrothermal springs associates mainly with a change of secondary phloem traits – sieve tubes and ray parenchyma parameters.
{"title":"STRUCTURAL FEATURES IN THE BARK OF THE ANNUAL STEM BETULA ERMANII CHAM, EXPOSED TO THE BARANSKY VOLCANO HYDROTHERMAL GASES AND FLUIDS","authors":"A. I. Talskikh, A. Kopanina, I. I. Vlasova","doi":"10.31433/2618-9593-2022-25-1-16-30","DOIUrl":"https://doi.org/10.31433/2618-9593-2022-25-1-16-30","url":null,"abstract":"The authors studied structural changes in the tissues of bark of annual stem Betula ermanii Cham. (Betulaceae Gray) under various environmental conditions. They collected the Betula ermanii samples in typical for this species conditions, characteristic of the Sakhalin Island, Krasnaya Mountain, Starozavodsky solfatara field, Baransky Volcano on the island of Iturup, and the Blue Lakes thermal springs area. A comparative quantitative analysis of the anatomical features of bark of annual stem made it possible to identify unidirectional structural changes in the conditions of gas-hydrothermal outcrops of Baransky Volcano, both upward and downward. These parameters include a number of crystals in cortex and phloem parenchyma, sieve tube diameters, the total number of ph loem rays and the uniseriate rays’ quantity, and the length of uniseriate phloem rays. The rest of bark tissue parameters of annual stem Betula ermanii from the studied habitats either showed no significant change, or changed in only one of the habitats with unfavorable conditions. The phellem width, the number of phellem cells in the radial row, and width of secondary phloem are modified in the Starozavodskoye solfatara field. The specific area of protophloem fibers and sclereids is changed under the conditions of thermal Blue Lakes. Thus, the structural response of annual stem Betula ermanii bark under extreme conditions of gas-hydrothermal springs associates mainly with a change of secondary phloem traits – sieve tubes and ray parenchyma parameters.","PeriodicalId":368004,"journal":{"name":"REGIONAL PROBLEM","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123508759","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 : 1900-01-01DOI: 10.31433/2618-9593-2022-25-1-62-73
G. Skrylnik
Geosystems’ development reflects various forms of space and time. Geosystems, as the main components of the geographic shell, lie on the scale of geographic space and their development proceeds within the framework of geog- raphic time. The purpose of the study is to consider all existing categories of space and time, and trace the spatial features and properties of time reflection in the development of geosystems, based on published materials and author's developments on the topic. When clarifying various aspects within the framework of the chosen topic, the author used the data from his many years research in the Far East and available data from scientific literature. When analyzing the topic, the author applied methods from a number of crosscutting directions for studying the complex physical-geographical shell (comparative geographical, informational, and paleogeographical), developed by academician K.K. Markov and co-authors. Geosystems, as hierarchically strictly subordinate natural entities within the geographic shell, show contrasting spatial (both horizontally and vertically) and temporal ordering, causally consistent with the main one (frame). The levels of stability and plasticity of general HS are not unlimited, because the main reserves, respectively, from geomorphological (due to conservatism) and phytosystems (due to plasticity) are ultimately still limited. Probably, now they are often at their limit, as evidenced, in particular, by the directed increase in natural conditions, man-made disasters, and in the conditions of anthropogenic «press». In the modern practice of geographical research, they usually accept space and time as physical categories. At the same time, we consider this problem in a broader sense to reveal other categories of them. In the case of rational nature management, the categories of Time and Space are always moral. Otherwise, its «rational» component disappears and nature management turns into anti-moral.
{"title":"GEOSYSTEMS AND SPACE-TIME FEATURES OF THEIR DEVELOPMENT (ON THE EXAMPLE OF THE RUSSIAN FAR EAST)","authors":"G. Skrylnik","doi":"10.31433/2618-9593-2022-25-1-62-73","DOIUrl":"https://doi.org/10.31433/2618-9593-2022-25-1-62-73","url":null,"abstract":"Geosystems’ development reflects various forms of space and time. Geosystems, as the main components of the geographic shell, lie on the scale of geographic space and their development proceeds within the framework of geog- raphic time. The purpose of the study is to consider all existing categories of space and time, and trace the spatial features and properties of time reflection in the development of geosystems, based on published materials and author's developments on the topic. When clarifying various aspects within the framework of the chosen topic, the author used the data from his many years research in the Far East and available data from scientific literature. When analyzing the topic, the author applied methods from a number of crosscutting directions for studying the complex physical-geographical shell (comparative geographical, informational, and paleogeographical), developed by academician K.K. Markov and co-authors. Geosystems, as hierarchically strictly subordinate natural entities within the geographic shell, show contrasting spatial (both horizontally and vertically) and temporal ordering, causally consistent with the main one (frame). The levels of stability and plasticity of general HS are not unlimited, because the main reserves, respectively, from geomorphological (due to conservatism) and phytosystems (due to plasticity) are ultimately still limited. Probably, now they are often at their limit, as evidenced, in particular, by the directed increase in natural conditions, man-made disasters, and in the conditions of anthropogenic «press». In the modern practice of geographical research, they usually accept space and time as physical categories. At the same time, we consider this problem in a broader sense to reveal other categories of them. In the case of rational nature management, the categories of Time and Space are always moral. Otherwise, its «rational» component disappears and nature management turns into anti-moral.","PeriodicalId":368004,"journal":{"name":"REGIONAL PROBLEM","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121179758","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 : 1900-01-01DOI: 10.31433/2618-9593-2023-26-1-52-64
А.М. Zhirnov
The relevance of the study is determined by the need of considering the earth’s crust in the East Asia outskirts, as there are various contradictory judgments on its origin. The purpose of the work is to characterize the geological structure of the eastern margin of Asia, supplemented with new data. To solve the problem, it is used numerous geological data and seismic sections of the territory, obtained by means of its detailed studies in the twentieth century, and new data. It is established that the eastern margin of Asia has a three-layered continental structure. Its active vertical geological development took place in the Precambrian (4.5–1.7 billion years ago), when the ancient crystalline foundation was created, partly in the Paleozoic, and most powerfully in the Mesozoic-Cenozoic time, when certain parts of the territory underwent several tectonic-magmatic cycles. During the Neocene-Quaternary period, there intensified vertical tectonic movements, volcanism and seismicity. Six thousand years ago, significant flat parts of the territory were covered by sea waters due to the increase in the level of the World Ocean, with the formation of large grabens in the Arctic and the Asia outskirts. Therefore, there appeared a wide shallow shelf and separate deep seas (3–7 km). In addition to well-established facts on the structure of the Earth's crust, there are also the discussion ideas based on plate tectonics and paleomagnetism –movements of individual tectonic blocks and even individual continents from south to north, by a distance of up to 2 thousand kilometers, and the oceanic crust immersion under the outskirts of Asia.
{"title":"ON THE VERTICAL GROWTH OF THE EARTH’S CRUST IN THE EAST ASIA OUTSKIRTS AND ITS FLOODING BY THE WORLD OCEAN SIX THOUSAND YEARS AGO","authors":"А.М. Zhirnov","doi":"10.31433/2618-9593-2023-26-1-52-64","DOIUrl":"https://doi.org/10.31433/2618-9593-2023-26-1-52-64","url":null,"abstract":"The relevance of the study is determined by the need of considering the earth’s crust in the East Asia outskirts, as there are various contradictory judgments on its origin. The purpose of the work is to characterize the geological structure of the eastern margin of Asia, supplemented with new data. To solve the problem, it is used numerous geological data and seismic sections of the territory, obtained by means of its detailed studies in the twentieth century, and new data. It is established that the eastern margin of Asia has a three-layered continental structure. Its active vertical geological development took place in the Precambrian (4.5–1.7 billion years ago), when the ancient crystalline foundation was created, partly in the Paleozoic, and most powerfully in the Mesozoic-Cenozoic time, when certain parts of the territory underwent several tectonic-magmatic cycles. During the Neocene-Quaternary period, there intensified vertical tectonic movements, volcanism and seismicity. Six thousand years ago, significant flat parts of the territory were covered by sea waters due to the increase in the level of the World Ocean, with the formation of large grabens in the Arctic and the Asia outskirts. Therefore, there appeared a wide shallow shelf and separate deep seas (3–7 km). In addition to well-established facts on the structure of the Earth's crust, there are also the discussion ideas based on plate tectonics and paleomagnetism –movements of individual tectonic blocks and even individual continents from south to north, by a distance of up to 2 thousand kilometers, and the oceanic crust immersion under the outskirts of Asia.","PeriodicalId":368004,"journal":{"name":"REGIONAL PROBLEM","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128100196","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 : 1900-01-01DOI: 10.31433/2618-9593-2021-24-4-25-34
S. Medvedeva
The article presents original data on the contents of rare earth elements (REE) and characterizes their distribution in Mesozoic sedimentary rocks of the Lower Amur region. The author compares various parameters of the studied rocks with similar parameters in the standards of the same rocks. The stratigraphic divisions made on the M-54-I sheet of the 1:200,000 scale State Geological Map belong to the Amur (or Chayatyn) subzone (SFPZ) of the West Sikhote-Alin Structural-Formation Zone (SFZ). Among them, the Zhorminsky (K1 zm) strata, Silasinsky (K 1-2 sl) and Utitsky (K2 ut K2) formations are distinguished. The stratons are composed of sandstones and siltstones in different ratios. They also contain conglomerates, tuffs of different composition, and andesites. The REE content in siltstones is higher than in sandstones. Higher concentrations of elements were found in the studied rocks relative to the rocks of the Caucasian Folded System (CC). Compared to the aleuropes of the Russian platform, the sandstones of Priamurye subzone have less REE content, and the siltstones have more. Compared to PAAS (post-Archean Australian shale), the REE content is less. Chondrite normalized REE contents. The trend of the charts is negative. The same behavior of elements is characteristic of the distribution spectra in the studied sandstones, siltstones, RAAS, aleuropesstones of the Russian platform, and rocks of the Caucasian SS. In most of the rocks presented, the LRSE/TRSE is higher than 8, this indicates that the sedimentation basin of detrital material has a predominantly acidic composition. There is a significant negative europium anomaly – from 0.34 to 0.71 in sandstones, and from 0.47 to 0.75 in siltstones. It also indicates the acidic rocks erosion. Consequently, a set of parameters determines the rocks acidic composition in the demolition areas.
{"title":"NATURE OF THE DISTRIBUTION OF RARE EARTH ELEMENTS IN MESOZOIC SEDIMENTARY ROCKS OF THE LOWER AMUR REGION","authors":"S. Medvedeva","doi":"10.31433/2618-9593-2021-24-4-25-34","DOIUrl":"https://doi.org/10.31433/2618-9593-2021-24-4-25-34","url":null,"abstract":"The article presents original data on the contents of rare earth elements (REE) and characterizes their distribution in Mesozoic sedimentary rocks of the Lower Amur region. The author compares various parameters of the studied rocks with similar parameters in the standards of the same rocks. The stratigraphic divisions made on the M-54-I sheet of the 1:200,000 scale State Geological Map belong to the Amur (or Chayatyn) subzone (SFPZ) of the West Sikhote-Alin Structural-Formation Zone (SFZ). Among them, the Zhorminsky (K1 zm) strata, Silasinsky (K 1-2 sl) and Utitsky (K2 ut K2) formations are distinguished. The stratons are composed of sandstones and siltstones in different ratios. They also contain conglomerates, tuffs of different composition, and andesites. The REE content in siltstones is higher than in sandstones. Higher concentrations of elements were found in the studied rocks relative to the rocks of the Caucasian Folded System (CC). Compared to the aleuropes of the Russian platform, the sandstones of Priamurye subzone have less REE content, and the siltstones have more. Compared to PAAS (post-Archean Australian shale), the REE content is less. Chondrite normalized REE contents. The trend of the charts is negative. The same behavior of elements is characteristic of the distribution spectra in the studied sandstones, siltstones, RAAS, aleuropesstones of the Russian platform, and rocks of the Caucasian SS. In most of the rocks presented, the LRSE/TRSE is higher than 8, this indicates that the sedimentation basin of detrital material has a predominantly acidic composition. There is a significant negative europium anomaly – from 0.34 to 0.71 in sandstones, and from 0.47 to 0.75 in siltstones. It also indicates the acidic rocks erosion. Consequently, a set of parameters determines the rocks acidic composition in the demolition areas.","PeriodicalId":368004,"journal":{"name":"REGIONAL PROBLEM","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134109768","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 : 1900-01-01DOI: 10.31433/2618-9593-2023-26-1-36-44
L. Medvedeva
The article presents new data on the flora of cyanobacteria and freshwater algae in the Bastak State Nature Reserve. In addition to the available information, 100 species of cyanobacteria and algae were identified from six divisions, with the exception of diatoms: Cyanobacteria – 27, Euglenozoa – 13, Ochrophyta – 5, Rhodophyta – 1, Chlorophyta – 25, Charophyta – 29 taxa. It is provided the discovered taxa annotated list, which indicates the place and the time of collection, as well as the organism occurrence frequency. Among the found organisms it is identified some interesting and rare species, fifteen of them new to the territory of the Russian Far East: cyanobacteria Anabaenopsis raciborskii, Dolichospermum planctonicum, euglenoids algae Menoidium pellucidum var. steinii, Eutreptia viridis and some other species. A large number of the rare species are noted in the Charophyta division: Cosmarium amurense, C. tessellatum, Gonatozygon aculeatum, Mesotaenium degreyi, Spondylosium pulchellum. It was for the first time that in the Russian Far East some most interesting species belonging to the genus Pleurotaenium. P. crenulatum were found. The two species of Pleurotaenium caldense var. cristatum and P. subcoronulatum were for the first time identified for the flora of Russia.
{"title":"NEW DATA ON THE CYANOBACTERIA AND ALGAE COMPOSITION IN THE BASTAK STATE NATURE RESERVE","authors":"L. Medvedeva","doi":"10.31433/2618-9593-2023-26-1-36-44","DOIUrl":"https://doi.org/10.31433/2618-9593-2023-26-1-36-44","url":null,"abstract":"The article presents new data on the flora of cyanobacteria and freshwater algae in the Bastak State Nature Reserve. In addition to the available information, 100 species of cyanobacteria and algae were identified from six divisions, with the exception of diatoms: Cyanobacteria – 27, Euglenozoa – 13, Ochrophyta – 5, Rhodophyta – 1, Chlorophyta – 25, Charophyta – 29 taxa. It is provided the discovered taxa annotated list, which indicates the place and the time of collection, as well as the organism occurrence frequency. Among the found organisms it is identified some interesting and rare species, fifteen of them new to the territory of the Russian Far East: cyanobacteria Anabaenopsis raciborskii, Dolichospermum planctonicum, euglenoids algae Menoidium pellucidum var. steinii, Eutreptia viridis and some other species. A large number of the rare species are noted in the Charophyta division: Cosmarium amurense, C. tessellatum, Gonatozygon aculeatum, Mesotaenium degreyi, Spondylosium pulchellum. It was for the first time that in the Russian Far East some most interesting species belonging to the genus Pleurotaenium. P. crenulatum were found. The two species of Pleurotaenium caldense var. cristatum and P. subcoronulatum were for the first time identified for the flora of Russia.","PeriodicalId":368004,"journal":{"name":"REGIONAL PROBLEM","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115676602","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 : 1900-01-01DOI: 10.31433/2618-9593-2022-25-1-49-61
G. Sokolova
The Amur is navigable along its entire length, and it has a great transport importance for the Far East region. In years with spring-summer-autumn periods of low water level, the Amur River navigation suffers great economic losses. In such years, the volume of cargo transportation and the movement of passenger ships are disrupted, the work of water intakes deteriorates, and water supply to the population and enterprises is hampered. In the Khabarovsk Territory, material damage is sometimes commensurate with the damage from floods. More than a century of observations of the Amur regime near Khabarovsk made it possible to carry out a statistical analysis of the characteristic water level dynamics in three water phases: spring flood, summer low-water period and rain floods. The territory climate with cold dry winters and warm humid summers determines a dual maximum runoff in the Amur regime, reduced in spring and high in summer. It is noteworthy that both maximum runoffs have a steady downward trend in the dynamics of the highest water levels for 1896–2021. However, the height of the spring flood wave, in contrast to the annual maximums, decreases in dynamics more intensively (at a rate of 10–12 cm / 10 years and 5–7 cm / 10 years, respectively). The lowest water levels observed after the flood wave (summer low water period) have a long-term trend in dynamics, parallel to the spring trend. A similar trend in the Amur regime is associated with the variability of the regional climate and is synchronous with global warming characterized by an increase in surface air temperature, which contributes to an increase in evaporation from the water surface, and therefore, to a decrease in river runoff. The performed assessment of the Amur water regime during the navigation period makes it possible, by means of trend components, to orient the hydrologist-forecaster on the distribution of the Amur water content in in the coming season.
阿穆尔河全长可通航，对远东地区具有重要的运输作用。在春夏秋季低水位的年份，阿穆尔河航运遭受了巨大的经济损失。在这些年份，货物运输量和客船运动中断，取水口工作恶化，人口和企业的供水受到阻碍。在哈巴罗夫斯克地区，物质损失有时与洪水造成的损失相当。对哈巴罗夫斯克附近的阿穆尔河进行了一个多世纪的观测，使人们能够对三个水期的特征水位动态进行统计分析:春季洪水、夏季低潮期和暴雨洪水。冬季寒冷干燥，夏季温暖潮湿的地域气候决定了阿穆尔河流域的双重最大径流量，春季减少，夏季增加。值得注意的是，在1896-2021年的最高水位动态中，这两个最大径流量都有稳定下降的趋势。然而，与年最高水位相比，春季洪波高度的动态下降更为强烈(分别为10 - 12 cm / 10年和5-7 cm / 10年)。洪波后(夏季低潮期)观测到的最低水位具有长期动态趋势，与春季趋势平行。阿穆尔河流域的类似趋势与区域气候的变化有关，并与以地表气温升高为特征的全球变暖同步，这有助于增加水面的蒸发，从而减少河流径流。在通航期间对阿穆尔河水量状况进行的评估，使水文预报员有可能通过趋势分量来确定下一季节阿穆尔河水量的分布。
{"title":"STATISTICAL ANALYSIS OF THE AMUR RIVER WATER REGIME FORECAST","authors":"G. Sokolova","doi":"10.31433/2618-9593-2022-25-1-49-61","DOIUrl":"https://doi.org/10.31433/2618-9593-2022-25-1-49-61","url":null,"abstract":"The Amur is navigable along its entire length, and it has a great transport importance for the Far East region. In years with spring-summer-autumn periods of low water level, the Amur River navigation suffers great economic losses. In such years, the volume of cargo transportation and the movement of passenger ships are disrupted, the work of water intakes deteriorates, and water supply to the population and enterprises is hampered. In the Khabarovsk Territory, material damage is sometimes commensurate with the damage from floods. More than a century of observations of the Amur regime near Khabarovsk made it possible to carry out a statistical analysis of the characteristic water level dynamics in three water phases: spring flood, summer low-water period and rain floods. The territory climate with cold dry winters and warm humid summers determines a dual maximum runoff in the Amur regime, reduced in spring and high in summer. It is noteworthy that both maximum runoffs have a steady downward trend in the dynamics of the highest water levels for 1896–2021. However, the height of the spring flood wave, in contrast to the annual maximums, decreases in dynamics more intensively (at a rate of 10–12 cm / 10 years and 5–7 cm / 10 years, respectively). The lowest water levels observed after the flood wave (summer low water period) have a long-term trend in dynamics, parallel to the spring trend. A similar trend in the Amur regime is associated with the variability of the regional climate and is synchronous with global warming characterized by an increase in surface air temperature, which contributes to an increase in evaporation from the water surface, and therefore, to a decrease in river runoff. The performed assessment of the Amur water regime during the navigation period makes it possible, by means of trend components, to orient the hydrologist-forecaster on the distribution of the Amur water content in in the coming season.","PeriodicalId":368004,"journal":{"name":"REGIONAL PROBLEM","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114660171","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 : 1900-01-01DOI: 10.31433/2618-9593-2023-26-1-45-51
A. Trukhin
The author analyzes the accounting results of spotted seal offspring number in the local population from the Peter the Great Bay (Sea of Japan). The annual growth in the number of spotted seal pups on reproductive rookeries of the Rimsky-Korsakov archipelago islands exceeds 1,000 individuals. On some islands, the density of mature seals during the breeding season has reached a biological optimum, and the offspring number has stabilized. It is observed a steady increase in the pups number on the Bolshoi Pelis and Stenin islands, later integrating in the population reproduction. The reproductive burden on these islands increases from year to year. A general increase in the seal population number for the last quarter of the century has led to the formation of new reproductive rookeries of spotted seals both in Peter the Great Bay and beyond. The study results can be used as a basis for the population long-term monitoring, contributing to its conservation as anthropogenic impact on seals and their habitat ncreases.
{"title":"POPULATION GROWTH AND REDISTRIBUTION OF REPRODUCTIVE BURDEN BETWEEN SPOTTED SEAL ROOKERIES IN PETER THE GREAT BAY","authors":"A. Trukhin","doi":"10.31433/2618-9593-2023-26-1-45-51","DOIUrl":"https://doi.org/10.31433/2618-9593-2023-26-1-45-51","url":null,"abstract":"The author analyzes the accounting results of spotted seal offspring number in the local population from the Peter the Great Bay (Sea of Japan). The annual growth in the number of spotted seal pups on reproductive rookeries of the Rimsky-Korsakov archipelago islands exceeds 1,000 individuals. On some islands, the density of mature seals during the breeding season has reached a biological optimum, and the offspring number has stabilized. It is observed a steady increase in the pups number on the Bolshoi Pelis and Stenin islands, later integrating in the population reproduction. The reproductive burden on these islands increases from year to year. A general increase in the seal population number for the last quarter of the century has led to the formation of new reproductive rookeries of spotted seals both in Peter the Great Bay and beyond. The study results can be used as a basis for the population long-term monitoring, contributing to its conservation as anthropogenic impact on seals and their habitat ncreases.","PeriodicalId":368004,"journal":{"name":"REGIONAL PROBLEM","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134399006","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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