Russian Journal of Earth Sciences最新文献

{"title":"Properties of Short-Period Internal Waves in the Kara Gates Strait Revealed from Spaceborne SAR Data","authors":"Ilya O. Kopyshov, Igor Kozlov, A. Shiryborova, S. Myslenkov","doi":"10.2205/2023es02si10","DOIUrl":"https://doi.org/10.2205/2023es02si10","url":null,"abstract":"This paper presents the results of identification of surface manifestations (SM) of short-period internal waves (SIW) in Sentinel-1 A/B synthetic aperture radar (SAR) images of the Kara Gates Strait in August–September 2021. 44 SM of SIW trains were detected in 47 SAR images. Statistics of occurrence, propagation direction and spatial characteristics of SIWs in the study area are given. During two months, satellite observations cover almost all phases of spring-neap tidal cycle. The use of a detailed topography of the study area made it possible to identify certain regions with a more frequent presence of the SIW leading crests with a particular focus made on the shallow (< 100 m) part of the strait. Each identified region is then described in terms of water depth, dimensionless slope, amplitudes of tidal current velocity and properties of SIWs. The obtained results were then compared with the results of previous studies.","PeriodicalId":44680,"journal":{"name":"Russian Journal of Earth Sciences","volume":"1 6","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138979465","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}

{"title":"Microwave Radar Sensing of Sea Waves: An Effective Reflection Coefficient","authors":"Vladimir Karaev, M. Panfilova, Yuriy A. Titchenko, Evgeniy Meshkov, Dmitry Kovaldov, Xiuzhong Li, He Yijun","doi":"10.2205/2023es000850","DOIUrl":"https://doi.org/10.2205/2023es000850","url":null,"abstract":"At the small incidence angles, the dominant backscattering mechanism for sea waves is the quasi-specular backscattering mechanism. The power of the reflected signal depends on the distribution function of the slopes of large-scale waves (in comparison with radar wavelength) and on the effective reflection coefficient, which is introduced instead of the Fresnel coefficient. In this paper, we discussed a new method for calculating the effective reflection coefficient from the wave scatterometer SWIM data. For the first time, measurements are performed by a radar at different azimuth angles at small incidence angles. This makes it possible to measure the effective reflection coefficient. An original algorithm was developed for data processing and determination of the total mean square slopes of large-scale sea waves and the azimuth dependence of the backscattering radar cross section at zero incidence angle. In the result of subsequent processing, the azimuth dependence of the effective reflection coefficient is retrieved. SWIM data were used to evaluate the developed algorithm. Processing of the test data set confirmed the efficiency of the algorithm. The azimuth anisotropy coefficients for the mean square slopes of large-scale waves and the effective reflection coefficient are calculated","PeriodicalId":44680,"journal":{"name":"Russian Journal of Earth Sciences","volume":"100 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138981513","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}

{"title":"Joint Interpretation Results of Gravitational and Thermal Fields for the Ural Region","authors":"Pyotr Martyshko, I. Ladovskii, D. Byzov","doi":"10.2205/2023es000855","DOIUrl":"https://doi.org/10.2205/2023es000855","url":null,"abstract":"A method for solving conjugation problems for the Poisson equation is implemented, which makes it possible to interpret potential fields (gravitational and stationary thermal fields) based on unified grid algorithms. A numerical algorithm has been developed for recalculating the mantle component of the heat flow from the level of the earth’s surface to the “crust–mantle” boundary through a layered medium inhomogeneous in thermal conductivity. Paleoclimate corrections were introduced into the measured values of the temperature gradient and heat flux for the northern territories. In the axial part of the Ural geosyncline, it was possible to exclude the negative depression of the mantle component of the heat flow, obtained from the results of geothermal modeling; taking into account the Pleistocene-Holocene warming of the preceding interglacial paleoclimate cycle leads to positive values of the heat flow recalculated to the “crust–mantle” boundary. It is shown that the use of heat flow data can significantly increase the geological information content of gravity modeling.","PeriodicalId":44680,"journal":{"name":"Russian Journal of Earth Sciences","volume":"269 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139183242","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}

{"title":"E-Waste: a Concise Update on Global Movement, Impacts, Management, and Site Remediation","authors":"Hung Wong Ming","doi":"10.2205/2023es02si08","DOIUrl":"https://doi.org/10.2205/2023es02si08","url":null,"abstract":"The rapid rise of electronic waste (e-waste) worldwide has become a public health concern. Wealthy countries are disposing of their e-waste to other countries taking advantage of their less stringent environmental laws and regulations. China used to receive large amounts of e-waste through Hong Kong (a free port) but banned the entry of e-waste in 2013. Salvaging or recycling different parts of the e-waste using primitive and uncontrolled techniques generated a wide range of toxic chemicals (mainly heavy metals and persistent organic pollutants). Most studies concerning the environmental and health impacts of the emitted toxic chemicals were conducted in China. The principal aim of this short article is to review the various environmental problems and health impacts of e-waste recycling, policies, management, and remediation of contaminated sites. Out of the primitive methods used for recycling, the two most destructive ones causing harm to the environment and human health are (1) Open-burning of e-waste for disposing of the salvaged e-waste and (2) Acid-stripping of electronic boards for collecting precious metals (gold, silver, platinum). There is sufficient evidence showing the associations between the toxic chemicals in different media (i.e., water, soil/sediment, air) and local food items (i.e., fish, meat, vegetables), linking with body burdens (hair, milk, placenta) of workers and residents. The epidemiological data further demonstrated the abrupt rise of several significant diseases (i.e., respiratory disease, cardiovascular disease, malignant tumors) in Taizhou (China), one of the two e-waste recycling sites. Effective policies and vigorous enforcement in managing e-waste are essential. International cooperation is necessary to prohibit the transboundary movement of e-waste. Sites contaminated by e-waste recycling contain incredibly high concentrations of toxic pollutants, which should be removed using excavation, degradation (via microbes, nanoparticles, biochar), soil washing, etc. Planting appropriate plants with associated rhizospheric microbes would achieve longer-term stability.","PeriodicalId":44680,"journal":{"name":"Russian Journal of Earth Sciences","volume":"5 11","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138980962","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}

{"title":"Software Tools for Evaluating Renewable Energy Sources","authors":"P. Buchatskiy, S. Teploukhov, S. Onishchenko, K. Kuzmin, T. Bychkov","doi":"10.2205/2023es02si02","DOIUrl":"https://doi.org/10.2205/2023es02si02","url":null,"abstract":"In this paper a review of existing software tools for the evaluating and modeling of renewable energy sources, which allow to determine various aspects, such as: the amount of incoming energy for a particular area, the economic feasibility of involving an alternative source, the impact on the environment, the cost of the projected system, the features of the terrain, etc. Programs for the evaluation of solar and wind energy, as well as solutions allowing the evaluation of several different types of renewable energy sources were considered. As a result, open-source software tools, such as: QGIS, SAGA GIS, which can be integrated into the implementation of a comprehensive assessment of renewable energy sources to perform certain functions, such as a preliminary assessment of the gross renewable energy potential in specific geographical conditions and identifying topographical features of the regions under consideration, were defined.","PeriodicalId":44680,"journal":{"name":"Russian Journal of Earth Sciences","volume":"36 8","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138981077","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}

{"title":"Using the Strategy of Multi-Cloud Solutions for Environmental Protection","authors":"V. Dovgal, S. Kuizheva","doi":"10.2205/2023es02si13","DOIUrl":"https://doi.org/10.2205/2023es02si13","url":null,"abstract":"This paper discusses several extremely promising applications of multi-cloud solutions that can help achieve environmental protection and sustainability goals, provide ecological benefits, and aid wildlife research, conservation and protection. The widespread adoption of multi-cloud strategies helps illustrate the range of initiatives and approaches to reduce environmental burdens employed by government agencies, non-governmental organizations, and private companies.","PeriodicalId":44680,"journal":{"name":"Russian Journal of Earth Sciences","volume":"142 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138978539","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}

{"title":"Investigation of the Cyclicity and Trend of the Surface Air Temperature According to the Weather Station Mayak of Sukhum","authors":"Igor' Afanasyev, L. Khintuba, Ya. Ekba, R. Zakinyan","doi":"10.2205/2023es02si04","DOIUrl":"https://doi.org/10.2205/2023es02si04","url":null,"abstract":"This paper analyzes the surface air temperature data for the city of Sukhum for the period 1961–2022. These values are presented as time series of average annual temperatures. As a result, we get 2 main components: trend, spectrum (including cycles). In general, the average annual temperature has a predominantly positive trend, i. e. over the entire period the temperature has increased by 1.31 degrees, which may occur against the background of global warming. Accordingly, another task of the current work was to identify cyclic components and determine their physical nature. A quasi-two-year, 5–6-year, solar activity cycle and a multi-year cycle (2–3 decades) are observed","PeriodicalId":44680,"journal":{"name":"Russian Journal of Earth Sciences","volume":"32 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138981584","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}

{"title":"Impact of Nano-fertilizers and Nutrient Management on Growth and Yield of Strawberry","authors":"Lakhwinder Singh, Ramesh Kumar Sadawarti, -. Shaifali, Sandeep Menon, T. Minkina, S. Sushkova, Vishnu D. Rajput","doi":"10.2205/2023es02si15","DOIUrl":"https://doi.org/10.2205/2023es02si15","url":null,"abstract":"In the pursuit of enhancing agricultural practices, this research delves into the intricate interplay between nano-fertilizers, nutrient management strategies, and their collective impact on the growth and yield metrics of strawberries. The present research was carried out to ascertain the impact of nano-fertilizers (ZnO and FeO) and integrated nutrients management (Phosphate solubilizing bacteria (PSB) & Azotobacter) on strawberry (Fragaria x ananassa Duch.) Cv. Winter Dawn. The results of present work showed different treatments of nano fertilizers and nutrients management has variable impact on strawberry growth such as treatment 7 (T7: 50% Recommended dose of fertilizer) + FYM + vermicompost + Azotobacter + 150 ppm nano-ZnO + 150 ppm nano-FeO) showed highest growth parameters regarding number of leaves (14), plant height (11.24 cm), leaf area (74.86 cm2) and chlorophyll content (52.41 μmol/m2) etc. compared with other treatments. However, treatment (T9: 50% RDF + FYM + vermicompost + Azotobacter + PSB + nano-ZnO + nano-FeO) indicated bit similar regarding number of leaves (13.33), plant height (11.96 cm), leaf area (74.08 cm2) and chlorophyll content (53.06 μmol/m2) etc. The biochemical parameters were also observed higher in treatment (T9). Considering above results, it can be concluded that the dose, i. e., 50% RDF along with FYM, vermicompost and Azotobactor + ZnO + FeO (150 ppm) could enhance growth and yield of strawberry.","PeriodicalId":44680,"journal":{"name":"Russian Journal of Earth Sciences","volume":"19 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138981096","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}

{"title":"Geological Filtration Model of the Layers of Nizovsky Field of Volga-Ural Oil and Gas Province","authors":"M. Meretukov, R. Toroyan, M. Bedanokov, R. Kokhuzheva, A. Artamonov","doi":"10.2205/2023es02si17","DOIUrl":"https://doi.org/10.2205/2023es02si17","url":null,"abstract":"The article presents the results of modeling a three-dimensional digital geological filtration model. The substantiation of the volumetric grids of the model is given and the analysis of the distribution of filtration-capacitance properties of layers and models of reservoir saturation with fluids is carried out. Based on the constructed three-dimensional model of Nizovsky field, the reliability of revealing hydrocarbon reserves at the field has been confirmed.","PeriodicalId":44680,"journal":{"name":"Russian Journal of Earth Sciences","volume":"6 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138980668","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}

{"title":"Histograms of the Caspian Sea Hydrometeorological Parameters","authors":"Andrey Kostianoy, Sergey Lebedev, A. Bocharov, Il'ya Kosolapov, Il'ya Tretiyak, Daniil Volkov, P. Kravchenko","doi":"10.2205/2023es02si11","DOIUrl":"https://doi.org/10.2205/2023es02si11","url":null,"abstract":"The article analyzes histograms of the distribution of the main hydrometeorological parameters of the Caspian Sea for 1980–2021 – air temperature, atmospheric pressure, absolute humidity, atmospheric precipitation and wind speed according to the MERRA-2 atmospheric reanalysis. Histograms were constructed for the entire study region of the Caspian Sea (36◦–48◦N, 45.625◦–55◦E), as well as separately for land and sea areas. The extremeness criteria were calculated based on the normal distribution and the real histogram for all 5 main meteorological parameters. A comparison was made of histograms obtained from MERRA-2 data and from weather station at Derbent located on the coast of the Caspian Sea. Distributions of average monthly wind speed, integral water vapor content and water vapor content in clouds over the Caspian Sea were also constructed according to microwave radiometry (SMMR, SSM/I) data for the time interval 1980–2021.","PeriodicalId":44680,"journal":{"name":"Russian Journal of Earth Sciences","volume":"9 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138980203","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}