Seismic Instruments最新文献

Seismic Risk Assessment in the Territory of Krasnodar krai 克拉斯诺达尔边疆区地震风险评估

IF 0.3

Seismic Instruments Pub Date : 2025-03-24 DOI: 10.3103/S0747923925700057

N. I. Frolova, I. P. Gabsatarova, S. P. Suchshev, N. S. Malaeva

{"title":"Seismic Risk Assessment in the Territory of Krasnodar krai","authors":"N. I. Frolova, I. P. Gabsatarova, S. P. Suchshev, N. S. Malaeva","doi":"10.3103/S0747923925700057","DOIUrl":"10.3103/S0747923925700057","url":null,"abstract":"The aim of the study is to update the information content of the Automated Information Management System of the Russian Unified Emergency Prevention and Response in order to increase the reliability of seismic risk assessment results and ensure the safety of the population in earthquake-prone areas of the Russian Federation. The study area is Krasnodar krai, where according to review and detailed seismic zoning, possible source zones with Мmax = 5.0, Мmax = 5.5, Мmax = 6, and Мmax = 7 were identified. The relevance of this study follows from activation of seismicity in recent years in the considered area according to the detection by the network of the Geophysical Survey, Russian Academy of Sciences, of seismic events in a wide magnitude range with М ≥ 1, as well as a series of perceived earthquakes in May 2023 in the Tuapse region. The scientific novelty is that for the first time in the study of a single region, the results of all stages of the study are presented. Seismic hazard and seismic regime assessments are refined by analyzing moderate events with magnitudes of M = 3.3–4.5 from the beginning of the last century to the present, and the seismic risk indicators are computed at regional and urban levels. For the first time, we have performed a joint analysis of all obtained variables. Computer simulation was used to assess the risk parameters along with the Extremum GIS, developed with the participation of the authors. Maps of seismic risk social and economic indicators were compiled for the territory of Krasnodar krai, as well as for the city of Krasnodar, taking into account the updated data on the city building inventory.","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"59 4-6","pages":"85 - 102"},"PeriodicalIF":0.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688328","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

Spectral Characteristics of Ambient Noise and Shear Waves of Earthquakes in the Baikal Rift Zone 贝加尔裂谷区环境噪声和地震剪切波的频谱特征

IF 0.3

Seismic Instruments Pub Date : 2025-03-24 DOI: 10.3103/S074792392570001X

Ts. A. Tubanov, A. N. Besedina, P. A. Predein

{"title":"Spectral Characteristics of Ambient Noise and Shear Waves of Earthquakes in the Baikal Rift Zone","authors":"Ts. A. Tubanov, A. N. Besedina, P. A. Predein","doi":"10.3103/S074792392570001X","DOIUrl":"10.3103/S074792392570001X","url":null,"abstract":"Comparison of the spectral characteristics of ground vibrations from earthquakes with the level of seismic ambient noise in a wide range of periods makes it possible to assess the possibilities of seismic networks, taking into account the local conditions for the location of seismic stations. Based on the probabilistic approach, which allows one to estimate the statistical parameters of seismic variations in the frequency domain, a model of seismic ambient noise for the southeastern shore of Lake Baikal was developed. The study of the spectral characteristics of seismic waves was carried out on the basis of records of earthquakes in the Baikal rift zone with 3.5 ≤ M ≤ 6.9 that occurred during 2017–2022. The spectral characteristics of shear waves from earthquakes were calculated using bandpass filtering in nonoverlapping octave bands. Comparison of the calculated spectral characteristics of seismic vibrations from earthquakes with seismic ambient noise model made it possible to evaluate the possibilities of three broadband seismic stations. The approach can be used to select optimal equipment in terms of its characteristics, taking into account the local conditions for the location of stations.","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"59 4-6","pages":"103 - 115"},"PeriodicalIF":0.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688331","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

Algorithm of Microseism Processing by the H/V Method to Estimate the Parameters of a Two-Layer Velocity Model Based on Surface Rayleigh Wave Ellipticity 基于表面瑞利波椭圆度的两层速度模型参数估计的H/V法微震处理算法

IF 0.3

Seismic Instruments Pub Date : 2025-03-24 DOI: 10.3103/S0747923925700021

A. V. Yablokov, P. A. Dergach, A. V. Liseikin, A. S. Serdyukov

{"title":"Algorithm of Microseism Processing by the H/V Method to Estimate the Parameters of a Two-Layer Velocity Model Based on Surface Rayleigh Wave Ellipticity","authors":"A. V. Yablokov, P. A. Dergach, A. V. Liseikin, A. S. Serdyukov","doi":"10.3103/S0747923925700021","DOIUrl":"10.3103/S0747923925700021","url":null,"abstract":"The research develops the H/V method by designing a microseismic data processing workflow, which includes prefiltering, summation of amplitude spectra, calculation of the component spectrum ratio (H/V curve) and its inversion based on surface Rayleigh wave ellipticity curves. As a result of the algorithm, the resonance frequencies values, depth of the top of the bedrock, and S-wave velocity in the soil and bedrock are determined, tolerant to noise at the point of measurement. The search ranges of the solution to the inverse problem are evaluated using the results of processing active seismic data on refracted and surface waves. As a result of processing the H/V curves, distribution maps of the reconstructed parameters for the entire area of the vibroseismic test site near the settlement of Bystrovka, Novosibirsk oblast, are constructed. The depth of the top of the bedrock, calculated by different seismic methods, are highly correlated with each other. The distribution maps of the reconstructed parameters may apply for studying the near-surface section, estimating the depth of the top of the bedrock, determining the incremental seismic intensity by the seismic impedance method, or calculating synthetic earthquake accelerograms.","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"59 4-6","pages":"116 - 126"},"PeriodicalIF":0.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688413","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

Calibration of the Extremum System: Preliminary Results for the February 6, 2023, Destructive Turkey Earthquake: Impact and Assessment 校准 Extremum 系统：2023 年 2 月 6 日土耳其破坏性地震的初步结果：影响与评估

IF 0.3

Seismic Instruments Pub Date : 2025-03-24 DOI: 10.3103/S0747923925700045

N. I. Frolova, I. P. Gabsatarova, S. P. Sushchev, N. S. Malaeva

{"title":"Calibration of the Extremum System: Preliminary Results for the February 6, 2023, Destructive Turkey Earthquake: Impact and Assessment","authors":"N. I. Frolova, I. P. Gabsatarova, S. P. Sushchev, N. S. Malaeva","doi":"10.3103/S0747923925700045","DOIUrl":"10.3103/S0747923925700045","url":null,"abstract":"<div>The article reports the use of intensity attenuation equations for the territory of Turkey by modeling the impact of the most powerful destructive earthquake of February 6, 2023, in southeastern Turkey. The relevance of the study follows from the needed reliable estimates of possible loss due to earthquakes in order to aid the decision making process for the response and proper choice of a search and rescue strategy for heavily affected populated areas. The aim of the study is to calibrate the Extremum system models for southeastern Turkey. Our study is the first to analyze the seismic intensity attenuation equations obtained by researchers at different times with a view to their applicability to near real time loss assessment for powerful events occurring in the study area. We investigate how the results of seismic attenuation modeling are affected by macroseismic field orientation, the ellipse compression factor k, and the source parameters of a powerful event as determined by different seismological agencies in the alert mode. Computer simulation was applied to assess possible impact due to the February 6, 2023, earthquake using the Extremum system developed with our participation. The article provides preliminary results of modeling the impact of the Turkey earthquake, as well as an assessment of the convergence achieved by the calculated and observed intensities for various input data options.</div>","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"59 4-6","pages":"63 - 84"},"PeriodicalIF":0.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688329","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

Development of a System of Comprehensive Instrumental Observations of Geophysical Fields at the Moscow Center of Geophysical Monitoring (Institute of Geosphere Dynamics, Russian Academy of Sciences) 莫斯科地球物理监测中心（俄罗斯科学院地球圈动力学研究所）地球物理场综合仪器观测系统的研制

IF 0.3

Seismic Instruments Pub Date : 2025-03-06 DOI: 10.3103/S0747923924700038

Yu. S. Rybnov, A. V. Krasheninnikov, D. N. Loktev, S. Yu. Rybnov, S. P. Solovyov, A. A. Spivak

引用次数: 0

Orenburg Regional Network “Neftegaz-Seismika” 奥伦堡地区网络“Neftegaz-Seismika”

IF 0.3

Seismic Instruments Pub Date : 2025-03-06 DOI: 10.3103/S0747923924700014

M. Y. Nesterenko, I. M. Aleshin, A. G. Goev, O. A. Kapustina, A. I. Astaskevich

引用次数: 0

Digital Platform for Integrated Geophysical Investigations in the Baikal Region 贝加尔湖地区综合地球物理调查数字平台

IF 0.3

Seismic Instruments Pub Date : 2025-03-06 DOI: 10.3103/S0747923924700063

L. P. Braginskaya, A. P. Grigoryuk, V. V. Kovalevsky, A. A. Dobrynina

引用次数: 0

Vertical and Horizontal Displacements Based on Observations at Talaya Station (Southwest Part of the Baikal Rift) 基于Talaya站（贝加尔湖裂谷西南段）观测的垂直和水平位移

IF 0.3

Seismic Instruments Pub Date : 2025-03-06 DOI: 10.3103/S0747923924700026

V. Yu. Timofeev, A. V. Timofeev, D. G. Ardyukov, I. S. Sizikov, D. A. Nosov

引用次数: 0

Measurement of Self-Noise of Magnetic Sensors Based on Parallel Test Data 根据平行测试数据测量磁传感器的自噪声

IF 0.3

Seismic Instruments Pub Date : 2025-03-06 DOI: 10.3103/S0747923924700051

A. D. Konoplin

引用次数: 0

Seismogram Fingerprints As a Tool for Automatic Filtering of Low-Frequency Noise 地震指纹图谱作为低频噪声自动滤波的工具

IF 0.3

Seismic Instruments Pub Date : 2025-03-06 DOI: 10.3103/S074792392470004X

K. Yu. Silkin

{"title":"Seismogram Fingerprints As a Tool for Automatic Filtering of Low-Frequency Noise","authors":"K. Yu. Silkin","doi":"10.3103/S074792392470004X","DOIUrl":"10.3103/S074792392470004X","url":null,"abstract":"The article begins with a review of publications on low-frequency noise suppression techniques. Denoising seismograms of earthquakes, explosions, and other seismic events is the goal of the study. It demonstrates that a branch in the theory and practice of seismogram processing is currently being actively developed, in which they are analyzed in a two-dimensional time–frequency plane. Additional second- and third-level add-ons appear in addition to the existing methods, which makes it difficult both to understand the essence of the methods and interpret their results. In our article, we attempted to order things in them. As an alternative to numerous add-ons to time–frequency analysis, we proposed our own approach. We believe that it will not only make the analysis clearer, but also increase its accuracy. Our method is based on the application of fingerprint technology to the results of continuous wavelet transform of a seismogram. In difficult cases, we recommend using a more advanced version of it: the redundant fingerprint method. It provides a convenient opportunity to objectively assess the frequency responses of all components of the seismogram. Based on the results of analysis, the automatic information system can select the optimal cutoff frequency for the filter in order to clear the seismogram of low-frequency noise and minimally distort the signal shape. This is especially important if the spectra of both partially overlap and if the noise intensity is high. The method may find itself in demand for automatic classification of seismic events by the nature of their source using machine learning technologies.","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"59 1-3","pages":"21 - 34"},"PeriodicalIF":0.3,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554076","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