Seismic Instruments最新文献_第10页

Improvements in High-Precision Tiltmeter Instrument Systems Located in an Underground Geophysical Observatory 地下地球物理观测站高精度倾斜仪系统的改进

IF 0.9

Seismic Instruments Pub Date : 2022-08-03 DOI: 10.3103/S0747923922040041

V. V. Gravirov, A. V. Deshcherevskii, Y. O. Kuzmin, D. V. Likhodeev, A. L. Sobisevich, I. A. Shirokov

引用次数: 2

Detailed Macroseismic Survey and Rational Approach to Seismic Intensity Assessment within the Territory of a Large City: Case Study of the Consequences of the September 21, 2020 Bystraya Earthquake in Irkutsk 大城市区域内详细的宏观地震调查和地震烈度评估的合理方法：2020 年 9 月 21 日伊尔库茨克 Bystraya 地震后果案例研究

IF 0.9

Seismic Instruments Pub Date : 2022-08-03 DOI: 10.3103/S0747923922040089

Ya. B. Radziminovich, A. V. Novopashina, O. F. Lukhneva, A. V. Kadetova, N. A. Gileva

{"title":"Detailed Macroseismic Survey and Rational Approach to Seismic Intensity Assessment within the Territory of a Large City: Case Study of the Consequences of the September 21, 2020 Bystraya Earthquake in Irkutsk","authors":"Ya. B. Radziminovich, A. V. Novopashina, O. F. Lukhneva, A. V. Kadetova, N. A. Gileva","doi":"10.3103/S0747923922040089","DOIUrl":"10.3103/S0747923922040089","url":null,"abstract":"The article discusses the advisability of conducting detailed macroseismic surveys within large cities and urban agglomerations. A retrospective analysis of information about earthquakes that occurred in the past decades and were felt in Irkutsk with an intensity of I = V or higher revealed the problem of preserving and availability of primary data on earthquake effects. Processing of the macroseismic data collected using internet-based questionnaires for the Irkutsk area after the September 21, 2020 Bystraya earthquake was carried out. The usage of online questionnaires has demonstrated high efficiency and information content, and also opened up certain possibilities such as improving the method with respect to the particular conditions of East Siberia. A large number of responses from earthquake eyewitnesses makes it possible to assess the shaking intensity separately in every administrative unit of Irkutsk, which in turn contributes to an increase in the detail of documenting the earthquake macroseismic field. The results allow us to consider assessment of the shaking intensity within certain parts of Irkutsk city as more rational versus assessment for the entire territory of the city.","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"58 4","pages":"409 - 423"},"PeriodicalIF":0.9,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4112281","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}

引用次数: 1

Young Landforms Created by Earthquakes in the Foothills of the Kurai Range (Gorny Altai) 古莱山脉(戈尔尼阿尔泰)山麓地震形成的年轻地貌

IF 0.9

Seismic Instruments Pub Date : 2022-08-03 DOI: 10.3103/S0747923922040065

A. M. Korzhenkov, E. V. Deev, N. I. Pozdnyakova

引用次数: 3

Using Microseisms for Seismic Microzoning 利用微震进行地震微区划

IF 0.9

Seismic Instruments Pub Date : 2022-08-03 DOI: 10.3103/S0747923922040053

A. V. Kalinina, S. M. Ammosov, R. E. Tatevossian, A. M. Turchkov

{"title":"Using Microseisms for Seismic Microzoning","authors":"A. V. Kalinina, S. M. Ammosov, R. E. Tatevossian, A. M. Turchkov","doi":"10.3103/S0747923922040053","DOIUrl":"10.3103/S0747923922040053","url":null,"abstract":"The efficiency of using microseisms for seismic microzoning (SMZ) is discussed based on experimental field data in different geological conditions. The microseism method is in the list of recommendations and codes and is widely used because of its low cost. In SMZ, microseisms are used to estimate the shaking intensity increment by calculating the amplitude spectra at seismic stations and resonance characteristics of ground layers, usually in combination with other methods. Difficulties in taking into account numerous local noise sources may significantly reduce the accuracy of the results. This has to be considered when planning field works for each object (site). In some cases (high anthropogenic noise level), it is better to refrain from using the spectral amplitude ratio in the high frequency band (above 3 Hz). Calculation of intensity increments individually in the 0.5–2 and 2–3 Hz bands, taking as the final increment the maximum of both calculations, guarantees the due level of conservatism; hence, the microseism method is also applicable to critical facilities. The spectral ratio of the horizontal and vertical components of seismic motion (H/V) can be used to estimate the resonance characteristics of soils and structure of the upper part of the soil profile, in particular, the depth of the soil/bedrock boundary.","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"58 4","pages":"398 - 408"},"PeriodicalIF":0.9,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4112280","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}

引用次数: 1

Features of the Structure and Formation of Dislocations in the Section of the Mikulinsky ( ({text{Q}}_{3}^{1}) ) Lacustrine Sediments of the Dmitrov Quarry (Moscow Region) 莫斯科地区Dmitrov采石场Mikulinsky (({text{Q}}_{3}^{1}))湖相沉积物剖面结构与位错形成特征

IF 0.9

Seismic Instruments Pub Date : 2022-08-03 DOI: 10.3103/S074792392204003X

E. S. Gorbatov, S. F. Kolesnikov, A. A. Rasskazov

{"title":"Features of the Structure and Formation of Dislocations in the Section of the Mikulinsky (\u0000 ({text{Q}}_{3}^{1})\u0000 ) Lacustrine Sediments of the Dmitrov Quarry (Moscow Region)","authors":"E. S. Gorbatov, S. F. Kolesnikov, A. A. Rasskazov","doi":"10.3103/S074792392204003X","DOIUrl":"10.3103/S074792392204003X","url":null,"abstract":"A complex of dislocations is described (extended gently dipping faults with a displacement of up to 1 m, dipping towards the center of the lens, steep faults with displacements of 5–20 cm), liquefaction structures (angular pseudonodules of sands in silts), near fault and near-strike-slip fault folds in the section of a large lens of the Mikulinskiy lacustrine–bog sediments (interbedded silt with a horizon of peat and clayey gyttja) of the aseismic region of the Russian Plate (Klin–Dmitrov ridge) in order to compare them with similar structures of the Baltic Shield, the seismogenicity of which is being discussed. It has been shown that the sequence was not subjected to periglacial phenomena such as glaciotectonics, glaciokarst, cryogenic deformations, the presence of which and pseudomorphism along polygonal-veined ice was noted only in the roof of the Mikulinskiy interglacial complex. A model is proposed for the formation of dislocations as a result of slumping of a silt layer with uneven subsidence of the underlying layers of peat sediments, which have been strongly compacted during lithogenesis, which explains the features of the kinematics of faults. The results showed that the dislocations of the Mikulinsky complexes of the Dmitrov quarry do not fundamentally differ from similar structures of the Baltic Shield, which confirms their lithogenic or exogenic (rather than seismotectonic) genesis in both regions. The differences in the dislocation complexes of the two regions are in the different sequence of formation of liquefaction and faults structures: in the Dmitrov section, they were formed synchronously, in the sections of the Baltic Shield, asynchronously.","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"58 4","pages":"473 - 484"},"PeriodicalIF":0.9,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4110794","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}

引用次数: 0

Changes in the Fracture and Intergranular Porosity in Rock Fracture Preparation 岩石裂缝预备过程中裂缝和粒间孔隙度的变化

IF 0.9

Seismic Instruments Pub Date : 2022-08-03 DOI: 10.3103/S0747923922040090

V. S. Zhukov, Yu. O. Kuzmin, S. A. Tikhotsky, N. A. Egorov, I. V. Fokin

{"title":"Changes in the Fracture and Intergranular Porosity in Rock Fracture Preparation","authors":"V. S. Zhukov, Yu. O. Kuzmin, S. A. Tikhotsky, N. A. Egorov, I. V. Fokin","doi":"10.3103/S0747923922040090","DOIUrl":"10.3103/S0747923922040090","url":null,"abstract":"The method proposed by the authors makes it possible to determine the nature of changes in two components (intergranular and fracture) of the total porosity. Changes in the fracture and intergranular porosity were investigated during fracture nucleation of sandstone samples under modeling in situ conditions. Sandstone samples were held at constant confining and pore pressure modeling in situ conditions. At the same time, only a slight decrease in the total and intergranular porosity was observed. However, only in the sample with an initially large fracture porosity was an increase in fracture porosity observed. Growth of additional axial compression reduced all types of porosity. Fracture preparation of the sample with an initially small fracture porosity was predominantly accompanied by a decrease in total and intergranular porosity and increase in fracture porosity, i.e., growth of microcracks. At the same time, during fracture preparation of a sample with an initially large value fracture porosity, an increase in total and intergranular porosity and decrease in fracture porosity were observed, which is characteristic of dilatancy processes. Differences in the fracture nucleation of sandstone samples were revealed, which indicates that their initial fracture porosity has a significant effect on them.","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"58 4","pages":"379 - 388"},"PeriodicalIF":0.9,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4112279","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}

引用次数: 0

Compact Laser Devices for Measuring Airborne Microparticle Concentrations and Their Application at the Geophysical Monitoring Center of the Sadovsky Institute of Dynamics of Geospheres, Russian Academy of Sciences 用于测量空气中微粒子浓度的紧凑型激光设备及其在俄罗斯科学院萨多夫斯基地球大气动力学研究所地球物理监测中心的应用

IF 0.9

Seismic Instruments Pub Date : 2022-05-23 DOI: 10.3103/S0747923922030082

A. V. Krasheninnikov, D. N. Loktev, S. P. Soloviev, A. A. Spivak

{"title":"Compact Laser Devices for Measuring Airborne Microparticle Concentrations and Their Application at the Geophysical Monitoring Center of the Sadovsky Institute of Dynamics of Geospheres, Russian Academy of Sciences","authors":"A. V. Krasheninnikov, D. N. Loktev, S. P. Soloviev, A. A. Spivak","doi":"10.3103/S0747923922030082","DOIUrl":"10.3103/S0747923922030082","url":null,"abstract":"A option of the methodology for observing PM2.5 and PM10 particle mass concentrations based on an Arduino UNO board and Sensirion SPS30 laser sensor has been developed. The measuring system built according to the technique was used in a field experiment, as well as in continuous observations at a stationary point: the Moscow Geophysical Monitoring Center of the Institute of Dynamics of Geospheres, Russian Academy of Sciences (IDG RAS). Examples of variations in the observed characteristics are given, which indicate the possibility of using the instrumental system in addition to already existing devices when observing the geophysical environment. Continuous monitoring of microparticle concentrations at the Geophysical Monitoring Center will make it possible not only to assess the degree of atmospheric pollution in the megalopolis, but also highlight certain trends, frequencies, and patterns. Such monitoring will also make it possible to reveal the contribution of various sources to the increase in microparticle concentrations, as well as the effect of pollution on different geophysical fields.","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"58 3","pages":"235 - 243"},"PeriodicalIF":0.9,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4905364","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}

引用次数: 0

Tectonophysical Studies of Mt. Beshtau (Stavropol Krai) in Relation to the Groundwater Radioactive Contamination Hazard 斯塔夫罗波尔边疆区别什陶山与地下水放射性污染危害的构造物理研究

IF 0.9

Seismic Instruments Pub Date : 2022-05-23 DOI: 10.3103/S0747923922030069

N. A. Gordeev, I. V. Bondar

引用次数: 0

Experience of Constructing Digital Elevation Models with Unmanned Aerial Vehicles 无人机数字高程模型构建经验

IF 0.9

Seismic Instruments Pub Date : 2022-05-23 DOI: 10.3103/S0747923922030070

K. I. Kholodkov, S. D. Ivanov, I. M. Aleshin, F. V. Perederin, V. N. Koryagin, I. N. Kholodkov, M. I. Aleshin, M. A. Matveev, Yu. A. Morozov

引用次数: 0

Spatial Rhythms in the Data of Super-Deep Boreholes 超深钻孔数据中的空间节律

IF 0.9

Seismic Instruments Pub Date : 2022-05-23 DOI: 10.3103/S0747923922030033

O. I. Aptikaeva

{"title":"Spatial Rhythms in the Data of Super-Deep Boreholes","authors":"O. I. Aptikaeva","doi":"10.3103/S0747923922030033","DOIUrl":"10.3103/S0747923922030033","url":null,"abstract":"This article continues a study of spatial rhythmic variations of various parameters using spectral-profile analysis. This procedure has been successfully used in the Atlas of Natural Processes. In this study, manifestation of spatial rhythmic variations is considered with the example of vertical profiles composed of P-wave velocity values for three superdeep boreholes: Kola (SD-3), Vorotilov (VDB), and Ural (SD-4). Using wavelet analysis, we estimated the periodicities in the velocity variations and represented the seismoacoustic models of the SD-3, VDB, and SD-4 geological sections as a set of blocks of varying size in the upper part of the Earth’s crust. These blocks reflect the influence of different geodynamic processes at various depths. It was found that the hierarchical sequence of the average vertical sizes of the blocks corresponds to the hierarchical model of the geophysical medium. The geodynamical processes, which resulted in cyclic variations in P-wave velocities in the geological sections of the Kola (SD-3), Vorotilov (VDB), and Ural (SD-4) superdeep boreholes include: alternating epochs of volcanic activity and sedimentation, tectonic movements, impact events, penetration of intrusive bodies and amphibolite dikes in the intervals of relatively weaker rocks, and metamorphic and metasomatic alteration of rocks. Study of the sections of the superdeep boreholes can be considered, to some extent, a real-scale simulation of the crustal structure of the Earth up to large depths. Studies have shown that variations in the physical properties of crustal rocks and the hierarchical sequence of the average vertical sizes of blocks have common properties of cyclic processes involved in the “self-organization” environment.","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"58 3","pages":"256 - 269"},"PeriodicalIF":0.9,"publicationDate":"2022-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4903822","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}

引用次数: 0