Izvestiya, Physics of the Solid Earth最新文献_第3页

Influence of a Step-Shaped Mountain Relief on the Results of Magnetotelluric Soundings 阶梯式山体起伏对大地电磁测深结果的影响

IF 1 4区地球科学

Izvestiya, Physics of the Solid Earth Pub Date : 2025-08-06 DOI: 10.1134/S1069351325700284

V. V. Belyavsky

{"title":"Influence of a Step-Shaped Mountain Relief on the Results of Magnetotelluric Soundings","authors":"V. V. Belyavsky","doi":"10.1134/S1069351325700284","DOIUrl":"10.1134/S1069351325700284","url":null,"abstract":"The objective of the study was to assess the influence of the relief, defined in the form of a system of steep scarps, on the apparent resistivity curves and the parameters of geoelectric sections determined from them during magnetotelluric observations. It was solved using three-dimensional mathematical modeling of magnetotelluric fields using the finite difference method and the Maxwellf program. The dependences of the curves and the results of their one-dimensional inversion on the parameters of the blocks that make up the two- and three-dimensional models were analyzed. The distortions that shift the invariant curves of apparent resistivity calculated on the steps of the staircase model from the MTS curves measured on the plane ground-air boundary were estimated. In this case, the geoelectric parameters of the blocks located under the plane boundary are equal to those specified under the model with relief. The problem of constructing geoelectric models in conditions of stepwise changes in terrain can be solved using three-dimensional mathematical modeling of apparent resistivity curves, adjusted by normalizing coefficients that take into account the transition to a 3D model with a plane ground–air boundary. However, they depend on the period of variations. For this reason, it is more appropriate to evaluate the use of 3D inversion programs that include terrain topography in the initial 3D models. Before carrying out this procedure, it is necessary to know what shifts the apparent resistivity curves may have if the influence of the relief on them and the deviations obtained during their inversion of the geoelectric parameters of the sections from the test models are not taken into account.","PeriodicalId":602,"journal":{"name":"Izvestiya, Physics of the Solid Earth","volume":"61 3","pages":"363 - 373"},"PeriodicalIF":1.0,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regional Seismogravity Heterogeneities of the Upper Mantle of the West Siberian Plate (Quartz Profile) 西西伯利亚板块上地幔区域震重非均质性（石英剖面）

IF 1 4区地球科学

Izvestiya, Physics of the Solid Earth Pub Date : 2025-08-06 DOI: 10.1134/S1069351325700429

V. D. Suvorov, E. A. Melnik, E. V. Pavlov

引用次数: 0

Stochastic Simulations and Ground Motion Prediction Equation for Peak Accelerations, Peak Velocities, and Response Spectra for the Ural Region 乌拉尔地区峰值加速度、峰值速度和响应谱的随机模拟和地面运动预测方程

IF 1 4区地球科学

Izvestiya, Physics of the Solid Earth Pub Date : 2025-08-06 DOI: 10.1134/S1069351325700375

V. A. Pavlenko, O. V. Pavlenko

{"title":"Stochastic Simulations and Ground Motion Prediction Equation for Peak Accelerations, Peak Velocities, and Response Spectra for the Ural Region","authors":"V. A. Pavlenko, O. V. Pavlenko","doi":"10.1134/S1069351325700375","DOIUrl":"10.1134/S1069351325700375","url":null,"abstract":"The characteristics of radiation and propagation of seismic waves in the Ural region are refined based on stochastic modeling of the records of local earthquakes. These characteristics correspond to transient characteristics from areas of stable continental seismicity to seismically active regions with crustal seismicity. A ground motion prediction equation (GMPE) describing the dependence of peak ground accelerations (PGA), peak ground velocities (PGV), and acceleration response spectrum amplitudes (SA) on rock soil on magnitude and distance is constructed for the Ural region. The GMPE is applicable in a wide range of magnitudes (MW ~ 4–6.5) and distances (1–250 km) and can be used in seismic hazard assessment for the design and construction of earthquake-resistant structures in the Ural region. To account for the epistemic uncertainty of the estimates of seismic impacts in probabilistic seismic hazard analysis and construct a logic tree, five alternative modern GMPEs from other regions are selected: a global model for crustal seismicity, two models developed for the mountain regions of the Swiss and French Alps, and two models for regions of stable continental seismicity—eastern North America and Great Britain. These models are tested using the array of synthetic ground motion parameters. The equation for the Swiss Alps proved to be the closest to the GMPE developed for the Urals.","PeriodicalId":602,"journal":{"name":"Izvestiya, Physics of the Solid Earth","volume":"61 3","pages":"428 - 445"},"PeriodicalIF":1.0,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New Broadband Seismic Stations in the Central East European Platform 中欧和东欧平台的新宽带地震台站

IF 1 4区地球科学

Izvestiya, Physics of the Solid Earth Pub Date : 2025-08-06 DOI: 10.1134/S1069351325700296

A. G. Goev, I. M. Aleshin, N. L. Konstantinovskaya, R. A. Reznichenko, N. A. Yudochkin, M. N. Drobyshev

引用次数: 0

On the Regular Periodicity of the Seismic Process in the Eastern Caucasus over the Past Two Centuries 近两个世纪以来东高加索地区地震过程的规律性周期性

IF 1 4区地球科学

Izvestiya, Physics of the Solid Earth Pub Date : 2025-08-06 DOI: 10.1134/S1069351325700442

F. L. Yakovlev, R. Yu. Stakhovskaya, I. P. Gabsatarova

引用次数: 0

Archeomagnetic Age of Ceramic Fragments from the Archeological Multilayered Monument Ivanovskoe III 考古多层纪念碑陶瓷碎片的考古磁年龄

IF 1 4区地球科学

Izvestiya, Physics of the Solid Earth Pub Date : 2025-08-06 DOI: 10.1134/S1069351325700387

O. V. Pilipenko, Yu. B. Tsetlin

{"title":"Archeomagnetic Age of Ceramic Fragments from the Archeological Multilayered Monument Ivanovskoe III","authors":"O. V. Pilipenko, Yu. B. Tsetlin","doi":"10.1134/S1069351325700387","DOIUrl":"10.1134/S1069351325700387","url":null,"abstract":"Based on an archeomagnetic study of four ceramic fragments from two cultural layers of the multilayer archeological site Ivanovskoe III, the age of the ceramics is proposed based on the correlation with the VADM reference curve for the central part of the Russian Plain. For two ceramic fragments from the first cultural layer, the age of the Late Bronze Age, determined typologically and by the radiocarbon method, is consistent with the age determined by correlation with the VADM reference archeomagnetic data. Radiocarbon dates from undecomposed wood found in the peat layer beneath the second cultural layer have a wide range of values. Comparison with the graph of the VADM dependence on age for the central part of the Russian Plain allows us to state that one of the ceramic fragments found in the second cultural layer has a Neolithic age. For the second ceramic fragment from the second cultural layer, low VADM values were obtained, uncharacteristic of either the Late Bronze Age or the Developed Neolithic. A distinctive feature of samples with low VADM determinations is that they contain thermally unstable maghemite. The age of the second ceramic fragment may correspond to the Early Neolithic as a result of mixing of layers due to the economic activity of people who repeatedly inhabited this area.","PeriodicalId":602,"journal":{"name":"Izvestiya, Physics of the Solid Earth","volume":"61 3","pages":"334 - 345"},"PeriodicalIF":1.0,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of Configurational Mechanics Methods to the Problem of Stimulated Reservoir Volume Formation 构型力学方法在增产储层体积形成问题中的应用

IF 1 4区地球科学

Izvestiya, Physics of the Solid Earth Pub Date : 2025-08-06 DOI: 10.1134/S1069351325700363

Sh. A. Mukhamediev, O. Ya. Izvekov

引用次数: 0

Manifestations of Seismicity in the Low-Activity Territory of the Northeastern Caspian Region 东北里海地区低活动性区的地震活动性表现

IF 1 4区地球科学

Izvestiya, Physics of the Solid Earth Pub Date : 2025-08-06 DOI: 10.1134/S1069351325700417

I. N. Sokolova, I. P. Gabsatarova

引用次数: 0

Paleomagnetism of Miocene Magmatic Formations in South Kamchatka 南堪察加中新世岩浆组的古地磁

IF 1 4区地球科学

Izvestiya, Physics of the Solid Earth Pub Date : 2025-08-06 DOI: 10.1134/S1069351325700351

A. V. Latyshev, M. B. Anosova, E. A. Latanova, O. V. Bergal-Kuvikas

{"title":"Paleomagnetism of Miocene Magmatic Formations in South Kamchatka","authors":"A. V. Latyshev, M. B. Anosova, E. A. Latanova, O. V. Bergal-Kuvikas","doi":"10.1134/S1069351325700351","DOIUrl":"10.1134/S1069351325700351","url":null,"abstract":"Reconstructing the tectonic evolution of Kamchatka is crucial for deciphering the mechanisms of fold belt formation and development of subduction systems. This requires reliable paleomagnetic information for the poorly studied segments of the Koryak–Kamchatka fold region such as southern Kamchatka. This paper presents the first paleomagnetic data on Miocene magmatic bodies of the Pribrezhny complex, which is widespread on the Pacific coast of southern Kamchatka. The paleomagnetic pole calculated for the Miocene of southern Kamchatka from 33 sites is statistically significantly different from all the published Cenozoic poles in the nearby regions. The new data indicate the formation of Miocene volcanics at a paleolatitude close to the present position (52.3°) and support the formation of the Miocene supra-subduction volcanic belt on the more ancient basement of the Olyutor–Kamchatka fold system rather than within a separate exotic block. It is shown that most of the sampled volcanics formed before the main phase of tectonic deformation, but at least part of the studied normal-polarity bodies contain postfolding magnetization and may represent products of younger episodes of magmatism.","PeriodicalId":602,"journal":{"name":"Izvestiya, Physics of the Solid Earth","volume":"61 3","pages":"318 - 333"},"PeriodicalIF":1.0,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep Velocity Sections of the Avacha Bay Area of the Kamchatka Peninsula Obtained by the Receiver Function Method 用接收函数法获得的堪察加半岛阿瓦恰海湾地区深部速度剖面

IF 1 4区地球科学

Izvestiya, Physics of the Solid Earth Pub Date : 2025-08-06 DOI: 10.1134/S1069351325700399

R. A. Reznichenko, A. G. Goev, I. M. Aleshin, S. A. Tarasov, L. I. Gontovaya, D. V. Chebrov

{"title":"Deep Velocity Sections of the Avacha Bay Area of the Kamchatka Peninsula Obtained by the Receiver Function Method","authors":"R. A. Reznichenko, A. G. Goev, I. M. Aleshin, S. A. Tarasov, L. I. Gontovaya, D. V. Chebrov","doi":"10.1134/S1069351325700399","DOIUrl":"10.1134/S1069351325700399","url":null,"abstract":"The article studies the structure of the Earth’s crust and upper mantle of the Avacha Bay region of the Kamchatka Peninsula. One-dimensional sections of the dependence of seismic velocities on depth, obtained during the study are presented. These sections are constructed according to the data of the Petropavlovsk (PET), Dalniy (DAL), Institut (IVS), and Karymshina (KRM) stations for the period from 2000 to 2019. The stations are part of the permanent observational network of seismic stations of the Kamchatka Branch, Geophysical Survey, Russian Academy of Sciences. The sections are constructed to a depth of 300 km, which makes it possible to characterize the structure of the medium in the bay area, namely, to identify structural layers in the crust, the Moho boundary, and to estimate the degree of deviation of seismic wave velocities in the upper mantle from the corresponding values of the IASP91 global Earth model. The average values of velocities calculated from the obtained sections in the crust and upper mantle were significantly lower compared to the global model. The average deviation of the observed velocities from the model ones is 0.5–1.0 km/s in the crust, then it gradually decreases to a depth of about 180 km. At greater depths, the velocities in the obtained models coincide with the standard values. It should be noted that at the locations of the seismic stations, the lower boundary of the subducting Pacific Plate runs at depths of about 180 km. Therefore, the main reason for the difference in velocities is probably related to significant heating of material and the complex fluid-dynamic situation in the region of the mantle wedge.","PeriodicalId":602,"journal":{"name":"Izvestiya, Physics of the Solid Earth","volume":"61 3","pages":"471 - 478"},"PeriodicalIF":1.0,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0