Pub Date : 2024-03-07DOI: 10.18303/2619-1563-2023-4-36
M. V. Platonova, A. V. Kukharskii, E. B. Talovskaya, G. I. Lazorenko
Effective management of urban forests requires an integrated approach, starting with a complete inventory of their biodiversity. At the moment, data on the floristic composition of urban forests in Siberian cities is either limited or fragmentary. The purpose of this study is to classify urban forests by species and determine their ontogenetic state using remote sensing materials. This study aims to deeply analyze the structure of urban forests using remote sensing data, in particular the use of unmanned aerial vehicles.
{"title":"Urban forest analysis: species classification using machine learning and remote sensing data","authors":"M. V. Platonova, A. V. Kukharskii, E. B. Talovskaya, G. I. Lazorenko","doi":"10.18303/2619-1563-2023-4-36","DOIUrl":"https://doi.org/10.18303/2619-1563-2023-4-36","url":null,"abstract":"Effective management of urban forests requires an integrated approach, starting with a complete inventory of their biodiversity. At the moment, data on the floristic composition of urban forests in Siberian cities is either limited or fragmentary. The purpose of this study is to classify urban forests by species and determine their ontogenetic state using remote sensing materials. This study aims to deeply analyze the structure of urban forests using remote sensing data, in particular the use of unmanned aerial vehicles.","PeriodicalId":190530,"journal":{"name":"Russian Journal of Geophysical Technologies","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140258562","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 : 2024-03-07DOI: 10.18303/2619-1563-2023-4-45
M. V. Platonova, V. D. Kotler, A. V. Kukharskii, S. Y. Ivanov
The review article provides a comprehensive overview of modern methods and approaches for processing large volumes of observational data in the context of monitoring forest ecosystems. The article shows examples of processing various data obtained using Earth remote sensing (ERS) and unmanned aerial vehicles (UAVs). Particular attention is paid to assessing the carbon cycle; the practice of using machine learning methods in processing monitoring data is also discussed in detail, as they play a key role in increasing the accuracy of the resulting estimates. The article also discusses modern geographic information systems designed for complex analysis of data from various natural complexes.
{"title":"Carbon cycle: ESP and UAV data processing approaches for forest ecosystem monitoring examples","authors":"M. V. Platonova, V. D. Kotler, A. V. Kukharskii, S. Y. Ivanov","doi":"10.18303/2619-1563-2023-4-45","DOIUrl":"https://doi.org/10.18303/2619-1563-2023-4-45","url":null,"abstract":"The review article provides a comprehensive overview of modern methods and approaches for processing large volumes of observational data in the context of monitoring forest ecosystems. The article shows examples of processing various data obtained using Earth remote sensing (ERS) and unmanned aerial vehicles (UAVs). Particular attention is paid to assessing the carbon cycle; the practice of using machine learning methods in processing monitoring data is also discussed in detail, as they play a key role in increasing the accuracy of the resulting estimates. The article also discusses modern geographic information systems designed for complex analysis of data from various natural complexes.","PeriodicalId":190530,"journal":{"name":"Russian Journal of Geophysical Technologies","volume":"43 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140259249","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 : 2024-03-07DOI: 10.18303/2619-1563-2023-4-53
K. Sukhorukova, I. Surodina, O. Nechaev
Based on the results of numerical modeling, the effect of vertical drilling-induced fractures on the data of galvanic electrical logging methods is considered. Geoelectric models represent a space with different resistivity values, a well and axisymmetric fractures filled with drilling fluid. The effect of fractures limited in radial depth on galvanic logging data leads to a change in signals similar to the change opposite the formation with a penetration zone located within the fracture interval. Based on the on gradient probes and focused logging data, a model of both a formation with an invaded zone and an impermeable formation with a vertical resistivity less than the horizontal one is selected. Thin vertical fractures do not affect the signals of induction probes, which may be a sign of their presence.
{"title":"Results of numerical modeling of the effect of vertical fractures on electrical logging data","authors":"K. Sukhorukova, I. Surodina, O. Nechaev","doi":"10.18303/2619-1563-2023-4-53","DOIUrl":"https://doi.org/10.18303/2619-1563-2023-4-53","url":null,"abstract":"Based on the results of numerical modeling, the effect of vertical drilling-induced fractures on the data of galvanic electrical logging methods is considered. Geoelectric models represent a space with different resistivity values, a well and axisymmetric fractures filled with drilling fluid. The effect of fractures limited in radial depth on galvanic logging data leads to a change in signals similar to the change opposite the formation with a penetration zone located within the fracture interval. Based on the on gradient probes and focused logging data, a model of both a formation with an invaded zone and an impermeable formation with a vertical resistivity less than the horizontal one is selected. Thin vertical fractures do not affect the signals of induction probes, which may be a sign of their presence.","PeriodicalId":190530,"journal":{"name":"Russian Journal of Geophysical Technologies","volume":"7 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140258325","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 : 2024-03-07DOI: 10.18303/2619-1563-2023-4-4
V. Kontorovich, S. V. Ershov, L. Burshtein
A model of the geological structure was constructed and the oil and gas potential prospects of the Yenisei-Khatanga regional trough were assessed. Construction of seismogeological sections, structural and tectonic maps, structural and tectonic analysis was carried out. It was concluded that the Neocomian clinoform complex, which contains about 90 % of oil, gas and condensate reserves in this region, is of the greatest interest in the study area in terms of searching for large oil accumulations. It should be expected that significant oil reservoirs localized in the Berriasian–Valanginian sand formations will be controlled by complex structural-lithological and lithological non-anticlinal traps.
{"title":"Geological structure and oil and gas potential of the Yenisei–Khatanga regional trough","authors":"V. Kontorovich, S. V. Ershov, L. Burshtein","doi":"10.18303/2619-1563-2023-4-4","DOIUrl":"https://doi.org/10.18303/2619-1563-2023-4-4","url":null,"abstract":"A model of the geological structure was constructed and the oil and gas potential prospects of the Yenisei-Khatanga regional trough were assessed. Construction of seismogeological sections, structural and tectonic maps, structural and tectonic analysis was carried out. It was concluded that the Neocomian clinoform complex, which contains about 90 % of oil, gas and condensate reserves in this region, is of the greatest interest in the study area in terms of searching for large oil accumulations. It should be expected that significant oil reservoirs localized in the Berriasian–Valanginian sand formations will be controlled by complex structural-lithological and lithological non-anticlinal traps.","PeriodicalId":190530,"journal":{"name":"Russian Journal of Geophysical Technologies","volume":"38 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140260690","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 : 2024-03-07DOI: 10.18303/2619-1563-2023-4-23
E. V. Borisov, A. Nekhaev, N. I. Shestakova
Data on the geological structure of the Malyshevka Formation in the northeastern regions of Western Siberia in the Gydan and western parts of the Yenisei–Khatanga oil and gas regions are presented. Based on the results of dissection of the Middle Jurassic deposits, three main types of section of the Malyshevka Formation were identified. Zoning of the suite by section type is proposed. Based on a comprehensive analysis of the wave pattern of the Jurassic section on a series of temporal seismic profiles, well geophysical data, and faunal determinations, a detailed correlation of Middle Jurassic sediments was performed. Based on the results of the work, a seismogeological model of the Malyshevka Formation of the northeastern regions of Western Siberia was built, which made it possible to resolve controversial issues regarding its volumes in the southern part of the Gydan Peninsula.
{"title":"Geological structure of the Malyshevka Formation of the northeastern regions of Western Siberia according to the complex of geological and geophysical data","authors":"E. V. Borisov, A. Nekhaev, N. I. Shestakova","doi":"10.18303/2619-1563-2023-4-23","DOIUrl":"https://doi.org/10.18303/2619-1563-2023-4-23","url":null,"abstract":"Data on the geological structure of the Malyshevka Formation in the northeastern regions of Western Siberia in the Gydan and western parts of the Yenisei–Khatanga oil and gas regions are presented. Based on the results of dissection of the Middle Jurassic deposits, three main types of section of the Malyshevka Formation were identified. Zoning of the suite by section type is proposed. Based on a comprehensive analysis of the wave pattern of the Jurassic section on a series of temporal seismic profiles, well geophysical data, and faunal determinations, a detailed correlation of Middle Jurassic sediments was performed. Based on the results of the work, a seismogeological model of the Malyshevka Formation of the northeastern regions of Western Siberia was built, which made it possible to resolve controversial issues regarding its volumes in the southern part of the Gydan Peninsula.","PeriodicalId":190530,"journal":{"name":"Russian Journal of Geophysical Technologies","volume":"28 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140259562","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 : 2024-03-07DOI: 10.18303/2619-1563-2023-4-64
P. Dergach, G. N. Baranov, K. Karyukina, A. N. Drobchik, A. Yablokov
The Siberian ring source of photons (SKIF) is a new fourth-generation synchrotron light source currently under construction in Koltsovo city, Russia. The beam stability of modern synchrotron sources, characterized by low emittance, is sensitive to insignificant levels of ground vibrations. We assessed the seismic noise variation from external sources recorded at the construction site of the SKIF. For the frequency range 1–20 Hz, the transmission coefficients for the vertical and horizontal recording components were 0.38 and 0.725, respectively. In the frequency range 20–100 Hz – 0.12 and 0.06, respectively. Analysis of experimental data shows the effectiveness of suppressing high-amplitude external noise in the frequency range of 2-100 Hz when transmitting vibrations from the ground to the SKIF storage ring basement. The coefficients determined for the basement match well with the design model.
{"title":"Site-vibration assessment for the SKIF SYNCHROTRON","authors":"P. Dergach, G. N. Baranov, K. Karyukina, A. N. Drobchik, A. Yablokov","doi":"10.18303/2619-1563-2023-4-64","DOIUrl":"https://doi.org/10.18303/2619-1563-2023-4-64","url":null,"abstract":"The Siberian ring source of photons (SKIF) is a new fourth-generation synchrotron light source currently under construction in Koltsovo city, Russia. The beam stability of modern synchrotron sources, characterized by low emittance, is sensitive to insignificant levels of ground vibrations. We assessed the seismic noise variation from external sources recorded at the construction site of the SKIF. For the frequency range 1–20 Hz, the transmission coefficients for the vertical and horizontal recording components were 0.38 and 0.725, respectively. In the frequency range 20–100 Hz – 0.12 and 0.06, respectively. Analysis of experimental data shows the effectiveness of suppressing high-amplitude external noise in the frequency range of 2-100 Hz when transmitting vibrations from the ground to the SKIF storage ring basement. The coefficients determined for the basement match well with the design model.","PeriodicalId":190530,"journal":{"name":"Russian Journal of Geophysical Technologies","volume":"51 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140258708","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 : 2024-02-22DOI: 10.18303/2619-1563-2023-3-58
M. S. Denisov, A. A. Zykov
In vibroseismic data, nonlinear signal distortions called harmonics are usually present. The previously proposed method of separating the signal and its harmonics makes it possible to improve the quality of the initial data, as well as to obtain additional information about the geological structure of the earth interior. One of the limitations of the proposed methodology is its initial development for linear frequency-modulated signals. A new method of prediction of harmonics that allows non-linear frequency modulation as well as amplitude variation is proposed.
{"title":"Modeling of harmonics of amplitude and nonlinear frequency-modulated signals","authors":"M. S. Denisov, A. A. Zykov","doi":"10.18303/2619-1563-2023-3-58","DOIUrl":"https://doi.org/10.18303/2619-1563-2023-3-58","url":null,"abstract":"In vibroseismic data, nonlinear signal distortions called harmonics are usually present. The previously proposed method of separating the signal and its harmonics makes it possible to improve the quality of the initial data, as well as to obtain additional information about the geological structure of the earth interior. One of the limitations of the proposed methodology is its initial development for linear frequency-modulated signals. A new method of prediction of harmonics that allows non-linear frequency modulation as well as amplitude variation is proposed.","PeriodicalId":190530,"journal":{"name":"Russian Journal of Geophysical Technologies","volume":"4 5‐6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140438682","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 : 2024-02-22DOI: 10.18303/2619-1563-2023-3-46
O. P. Temirbulatov, I. Mikhaylov, I. Surodina
This research is aimed at finding out the capabilities of an electromagnetic probe with toroidal coils in geosteering problems. Three-dimensional numerical finite-difference modeling of electromagnetic responses was performed for a probe with toroidal coils, for high-frequency electromagnetic logging probe and side logging sondes in two-layer models with varying resistivity contrast and borehole zenith angle. Based on these calculations, the key features of the toroidal coil electromagnetic sounder (ZET), high-frequency electromagnetic logging (VIKIZ) and side logging (BKZ) signals in detecting the boundary before it is crossed are shown. These features make it possible to determine the approach to the roof of the collector using the signals ZET, VIKIZ and BKZ.
{"title":"Reservoir top detection by resistivity logging signals in deviated and horizontal wells: comparative analysis","authors":"O. P. Temirbulatov, I. Mikhaylov, I. Surodina","doi":"10.18303/2619-1563-2023-3-46","DOIUrl":"https://doi.org/10.18303/2619-1563-2023-3-46","url":null,"abstract":"This research is aimed at finding out the capabilities of an electromagnetic probe with toroidal coils in geosteering problems. Three-dimensional numerical finite-difference modeling of electromagnetic responses was performed for a probe with toroidal coils, for high-frequency electromagnetic logging probe and side logging sondes in two-layer models with varying resistivity contrast and borehole zenith angle. Based on these calculations, the key features of the toroidal coil electromagnetic sounder (ZET), high-frequency electromagnetic logging (VIKIZ) and side logging (BKZ) signals in detecting the boundary before it is crossed are shown. These features make it possible to determine the approach to the roof of the collector using the signals ZET, VIKIZ and BKZ.","PeriodicalId":190530,"journal":{"name":"Russian Journal of Geophysical Technologies","volume":"28 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140440464","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 : 2024-02-22DOI: 10.18303/2619-1563-2023-3-69
M. S. Denisov, A. A. Zykov
When vibroseis oscillations are excited, along with the main signal, harmonics are generated. They travel into the Earth and, like the main signal, interact with the target reflectors. Harmonics have a wider than that of the main signal frequency band, so they can be used to increase the resolution of the seismic data. To do this, the signal-related data should be separated from the harmonic-related data. This problem can be successfully solved by the previously proposed optimization recursive filtering algorithm, which, however, was developed only for linearly frequency-modulated signals. In this work, the algorithm is generalized to the case of amplitude modulation and nonlinear frequency modulation. Examples of application of the technique to increase the resolution of real vibroseis data are given.
{"title":"Separation of signal and harmonics in non-explosive seismic prospecting with amplitude and nonlinear frequency-modulated signals","authors":"M. S. Denisov, A. A. Zykov","doi":"10.18303/2619-1563-2023-3-69","DOIUrl":"https://doi.org/10.18303/2619-1563-2023-3-69","url":null,"abstract":"When vibroseis oscillations are excited, along with the main signal, harmonics are generated. They travel into the Earth and, like the main signal, interact with the target reflectors. Harmonics have a wider than that of the main signal frequency band, so they can be used to increase the resolution of the seismic data. To do this, the signal-related data should be separated from the harmonic-related data. This problem can be successfully solved by the previously proposed optimization recursive filtering algorithm, which, however, was developed only for linearly frequency-modulated signals. In this work, the algorithm is generalized to the case of amplitude modulation and nonlinear frequency modulation. Examples of application of the technique to increase the resolution of real vibroseis data are given.","PeriodicalId":190530,"journal":{"name":"Russian Journal of Geophysical Technologies","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140440492","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 : 2024-02-21DOI: 10.18303/2619-1563-2023-3-36
O. Kuchay
Within the analyzed observation period (1971–2021), the values of the total magnitude of the scalar seismic moment obtained from the aftershocks of the strongest earthquakes (Мw ≥ 7.6) Asia (φ=20–50 N, λ=60–105° E), are weakly correlated with the total magnitude of the scalar seismic moment of background seismicity in the region of the main earthquake. A high level of seismic activity is manifested in the zones of large active faults and is reflected in the total magnitude of the scalar seismic moment of aftershock sequences. The types of movements in the foci of the main events do not affect the degree of aftershock activity (the total values of the scalar seismic moment) and occur at different background levels. Over the past 50 years, the magnitude of the strongest earthquakes has increased compared to the previous fifty-year period.
{"title":"Background earthquakes and aftershock sequences of the strongest intraplate earthquakes in Central Asia","authors":"O. Kuchay","doi":"10.18303/2619-1563-2023-3-36","DOIUrl":"https://doi.org/10.18303/2619-1563-2023-3-36","url":null,"abstract":"Within the analyzed observation period (1971–2021), the values of the total magnitude of the scalar seismic moment obtained from the aftershocks of the strongest earthquakes (Мw ≥ 7.6) Asia (φ=20–50 N, λ=60–105° E), are weakly correlated with the total magnitude of the scalar seismic moment of background seismicity in the region of the main earthquake. A high level of seismic activity is manifested in the zones of large active faults and is reflected in the total magnitude of the scalar seismic moment of aftershock sequences. The types of movements in the foci of the main events do not affect the degree of aftershock activity (the total values of the scalar seismic moment) and occur at different background levels. Over the past 50 years, the magnitude of the strongest earthquakes has increased compared to the previous fifty-year period.","PeriodicalId":190530,"journal":{"name":"Russian Journal of Geophysical Technologies","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140443973","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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