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Fragmentation of Time Series Is Not an Anomaly, but the Norm 时间序列的碎片化不是异常,而是常态
IF 0.3
Seismic Instruments Pub Date : 2025-07-01 DOI: 10.3103/S0747923925700240
M. M. Eliseykin, V. F. Ochkov
{"title":"Fragmentation of Time Series Is Not an Anomaly, but the Norm","authors":"M. M. Eliseykin,&nbsp;V. F. Ochkov","doi":"10.3103/S0747923925700240","DOIUrl":"10.3103/S0747923925700240","url":null,"abstract":"<p>Contemporary technologies have simplified and made accessible the collection and processing of data from scientific observations. Current solutions enable rapid preliminary processing of collected data, cleansing it of outliers related to measurement errors and filling gaps in fragmented time series. However, the ease with which this is achieved presents risks of indiscriminate use of such solutions. Consequently, data indicating real physical anomalies may be discarded, and the amalgamation of time series fragments might result in data that does not correspond to the observed processes and phenomena. Such a situation was justified in the past when there was a scarcity of computational resources. Discarding inherently unreliable values and filling gaps simplified and accelerated data analysis. Now, with sufficient computational power available, it is possible to begin searching for patterns in what was previously considered observational error and discarded. Moreover, the volume of accumulated data may allow for the consideration of fragments of time series as parts of a regular process, without filling the gaps with artificial data created based on our assumptions about the nature of the observed processes and phenomena. This raises the question of the necessity to adapt the approaches used in collecting and analyzing observational results to the possibilities afforded by new computational tools.</p>","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"61 2","pages":"153 - 156"},"PeriodicalIF":0.3,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037097","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
An Approach to Creating Spatial Predictive Prospecting Models of Deposits Based on Convolutional Neural Networks (A Case Study of the Territory of Southeastern Transbaikalia) 基于卷积神经网络的矿床空间预测找矿模型构建方法(以跨贝加尔湖东南部为例)
IF 0.3
Seismic Instruments Pub Date : 2025-06-11 DOI: 10.3103/S0747923925700203
G. A. Grishkov, I. O. Nafigin, S. A. Ustinov, V. A. Minaev, V. A. Petrov
{"title":"An Approach to Creating Spatial Predictive Prospecting Models of Deposits Based on Convolutional Neural Networks (A Case Study of the Territory of Southeastern Transbaikalia)","authors":"G. A. Grishkov,&nbsp;I. O. Nafigin,&nbsp;S. A. Ustinov,&nbsp;V. A. Minaev,&nbsp;V. A. Petrov","doi":"10.3103/S0747923925700203","DOIUrl":"10.3103/S0747923925700203","url":null,"abstract":"<p>Today, an urgent trend in geology is the development of approaches to applying neural network technologies at different stages of geological exploration. The article considers the architecture of the AlexNet neural network, which has already been tested in various territories. AlexNet makes it poddible to conduct training on a relatively small amount of data with sufficient accuracy to solve problems. To carry out operations with the selected neural network, a technique has been developed that makes it possible, based on prepared geological and spatial features (criteria) that indirectly or actually control ore objects, to train a neural network model with its further application to the studied territory. This approach allows one to analyze and obtain an expert assessment of the studied area in the form of a spatial predictive search model that predicts the location of the most promising sites for further study. In the current article, an example of using the developed methodology for forecasting hydrothermal massive sulfide deposits in the territory of Southeastern Transbaikalia is demonstrated.</p>","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"61 2","pages":"122 - 131"},"PeriodicalIF":0.3,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037336","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
Ranges of Seismic Treatment Parameters 地震处理参数范围
IF 0.3
Seismic Instruments Pub Date : 2025-06-11 DOI: 10.3103/S0747923925700173
O. O. Erteleva, F. F. Aptikaev
{"title":"Ranges of Seismic Treatment Parameters","authors":"O. O. Erteleva,&nbsp;F. F. Aptikaev","doi":"10.3103/S0747923925700173","DOIUrl":"10.3103/S0747923925700173","url":null,"abstract":"<p>In the lack of empirical data in the study area, the level of parameters of seismic oscillations—accelerations, velocities, displacements, etc.—is specified either using the instrumental part of seismic intensity scales or by recalculating intensity estimates into e oscillation parameter values of interest using correlation relationships. Both the seismic intensity values and the values of seismic ground motion parameters are continuous quantities. Because in practice intensity ratings are rounded to integer values, the intensity and parameters of seismic oscillations are considered discrete quantities. As a result, the quantitative characteristics of seismic oscillations at the boundary of neighboring points have a jump in the calculated seismic ground motion parameters. Consequently, each integer point in reality corresponds not to a single value of the oscillation parameter, but to a certain interval of values. In this article, based on an analysis of empirical data, ranges of values of seismic oscillation parameters are established: peak ground accelerations, velocities, and displacements corresponding to both integer and fractional (rounded to half a point) seismic intensity values, with respect to the seismic intensity scale GOST R 57546-2017. The problem of determining the ranges of predominant periods and duration of seismic oscillations is also considered. The problem of increasing the accuracy of seismic treatment assessment is discussed.</p>","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"61 1","pages":"7 - 14"},"PeriodicalIF":0.3,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037337","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
Some Regularities of the Modern Seismicity of Turkmenistan and Adjacent Territory of Northern Iran 土库曼斯坦及伊朗北部邻近地区现代地震活动性的一些规律
IF 0.3
Seismic Instruments Pub Date : 2025-06-11 DOI: 10.3103/S0747923925700161
V. Yu. Burmin, G. R. Petrosyan
{"title":"Some Regularities of the Modern Seismicity of Turkmenistan and Adjacent Territory of Northern Iran","authors":"V. Yu. Burmin,&nbsp;G. R. Petrosyan","doi":"10.3103/S0747923925700161","DOIUrl":"10.3103/S0747923925700161","url":null,"abstract":"<p>Some aspects of the seismicity of Turkmenistan and adjacent territory of Northern Iran are considered based on the ISC catalog for the period from 1964 to 2021. This period is apparently the most complete and, therefore, allows one to fairly correctly draw conclusions regarding some aspects of the seismicity of Turkmenistan and Northeastern Iran. In total, the catalog for the specified period contains about 500 events with a magnitude greater than 2.5. It is shown that the occurence graph has a negative slope slightly above average, which indicates a low value of the fractal characteristics of the environment in the Turkmenistan–Northern Iran region. Over the past 57 years, seismic activity in the region has varied from year to year. Moreover, from 1964 to 1984, seismic activity increased noticeably, and from 1985, it stabilized until 2000. From 2001 to 2004, there has been a sharp decline in seismic activity in Turkmenistan and Northern Iran, and from 2005 to 2016, a gradual increase in seismic activity in the region, followed again by a decrease. Lastly, since 2019, there has again been a significant increase in activity.</p>","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"61 1","pages":"1 - 6"},"PeriodicalIF":0.3,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037338","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
Borehole Seismic Monitoring of a Rock Massif Using Distributed Acoustic Sensing on an Undermined Territory 基于分布式声波传感的岩体破坏区域钻孔地震监测
IF 0.3
Seismic Instruments Pub Date : 2025-06-02 DOI: 10.3103/S074792392570015X
A. V. Chugaev, I. A. Sanfirov, A. I. Kuznetsov, R. A. Bogdanov
{"title":"Borehole Seismic Monitoring of a Rock Massif Using Distributed Acoustic Sensing on an Undermined Territory","authors":"A. V. Chugaev,&nbsp;I. A. Sanfirov,&nbsp;A. I. Kuznetsov,&nbsp;R. A. Bogdanov","doi":"10.3103/S074792392570015X","DOIUrl":"10.3103/S074792392570015X","url":null,"abstract":"<p>At the Verkhnekamskoe salt deposit, a monitoring system for the emergency area has been implemented, including a distributed acoustic sensing with a 6-km optical line and an active borehole source of elastic vibrations. Monitoring is performed using cross-well seismic survey. The use of a special cable containing straight and spiral fiber makes it possible to record both direct and refracted waves. Based on a comparison of wave fields, areas of change in the elastic properties of the massif are located and a quantitative assessment of such changes is given. The use of a large number of simultaneously recording channels makes it possible to achieve the required spatial resolution depending on the task. The low cost of fiber optic cable makes it possible to design its permanent installation in emergency areas with limited access. The proposed monitoring system can be used both to monitor the safety of the developed massif in problem areas, and to monitor the foundations of critical buildings and structures located in zones of accelerated subsidence of the undermined territory.</p>","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"60 4-6","pages":"98 - 105"},"PeriodicalIF":0.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161317","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
Automatic Verification, Collection of Metainformation and Structuring of Primary Data of Space Geodetic Observations for Their Qualitative Analysis 空间大地观测原始数据的自动验证、元信息采集与结构化及其定性分析
IF 0.3
Seismic Instruments Pub Date : 2025-06-02 DOI: 10.3103/S0747923925700069
S. I. Kuzikov, D. V. Kenigsberg
{"title":"Automatic Verification, Collection of Metainformation and Structuring of Primary Data of Space Geodetic Observations for Their Qualitative Analysis","authors":"S. I. Kuzikov,&nbsp;D. V. Kenigsberg","doi":"10.3103/S0747923925700069","DOIUrl":"10.3103/S0747923925700069","url":null,"abstract":"<p>Over past decades, the scope and number of national Global Navigation Satellite Systems (GNSS) have rapidly increased. To determine a geodetic position with high accuracy, many different GNSS receivers are used. The data from them are presented in common RINEX format for information exchange and further processing. By the 45th anniversary of the scientific activities of the Research Station of the Russian Academy of Sciences in Central Asia, we have collected an archive of GNSS observations, which includes about 300 000 days of fixing positions for more than 1500 geodetic reference sites with a data recording frequency of 30 s. The quality of coordinate calculations and site displacement velocity strongly depends on correct formatting of source data in RINEX files. This is clear from the experience of working with the high-precision software packages GAMIT/GLOBK and Bernese GNSS Software. We have created the RinexVER program for stream fixing of typical errors during processing of a large number of daily RINEX files (10 000–15 000 observations per year), for their sorting and formation of a structured archive, and for collecting the necessary information about them. Thus, the work of an expert on fixing RINEX file can be reduced by 50 times. In addition, it is possible to increase the accuracy in calculating time series of coordinates and velocity vectors for observation sites in geodynamic studies.</p>","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"60 1-3","pages":"10 - 18"},"PeriodicalIF":0.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160898","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
Influence of a Geomagnetic Storm on the ELF Field of Power Lines 地磁风暴对电力线极低频场的影响
IF 0.3
Seismic Instruments Pub Date : 2025-06-02 DOI: 10.3103/S0747923925700100
V. B. Belakhovsky, V. A. Pilipenko, Ya. A. Sakharov, V. V. Vakhnina, V. N. Selivanov
{"title":"Influence of a Geomagnetic Storm on the ELF Field of Power Lines","authors":"V. B. Belakhovsky,&nbsp;V. A. Pilipenko,&nbsp;Ya. A. Sakharov,&nbsp;V. V. Vakhnina,&nbsp;V. N. Selivanov","doi":"10.3103/S0747923925700100","DOIUrl":"10.3103/S0747923925700100","url":null,"abstract":"<p>It has been suggested that extremely low frequency (ELF) emissions can serve as an indirect remote means of detecting overloads in the operation of energy networks caused by geomagnetically induced currents (GICs). An analysis of the data from the recording system for GIC in power line transformers, a magnetometer, and an ELF receiver on the Kola Peninsula during a magnetic storm on September 7–8, 2017, showed that the intensity of radiation at an industrial frequency of 50 Hz and its third harmonic of 150 Hz increases with increasing GIC. Apparently, under the influence of GIC, the transmitted currents in power transmission lines (PTLs) are unbalanced, so that the PTL becomes a large-scale antenna and radiates both at the fundamental frequency of alternating current (50 Hz) and its harmonics. The discovered effect of the increasing imbalance of currents in PTLs has not previously been noted as a possible factor in the impact of space weather on energy systems.</p>","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"60 1-3","pages":"43 - 50"},"PeriodicalIF":0.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160895","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
Expanding the Operating Frequency Range of SM-3KV Short-Period Seismometers 扩大SM-3KV短周期地震仪的工作频率范围
IF 0.3
Seismic Instruments Pub Date : 2025-06-02 DOI: 10.3103/S0747923925700094
A. N. Besedina, N. V. Kabychenko, S. G. Volosov, A. G. Goev, N. L. Konstantinovskaya, R. A. Reznichenko
{"title":"Expanding the Operating Frequency Range of SM-3KV Short-Period Seismometers","authors":"A. N. Besedina,&nbsp;N. V. Kabychenko,&nbsp;S. G. Volosov,&nbsp;A. G. Goev,&nbsp;N. L. Konstantinovskaya,&nbsp;R. A. Reznichenko","doi":"10.3103/S0747923925700094","DOIUrl":"10.3103/S0747923925700094","url":null,"abstract":"<p>The article provides an example of an instrumental solution for expanding the frequency band of the sensor into the low-frequency region using the SM-3KV short-period seismometer. The correction circuit is built on two stages of integrators on operational amplifiers. The developed prototype SM-3KV-cor was tested in laboratory and field conditions. Analysis of records of explosions and earthquakes showed that the developed scheme can be used when conducting seismic monitoring at frequencies above 0.06 Hz. When compared with data from a broadband seismometer, it is shown that the SM-3KV-cor can be used to reconstruct the velocity features of the Earth’s crust near the installation site of a seismic station based on the construction of receiver functions. When analyzing the total records of <i>P</i>-<i>S</i> converted waves, a phase was identified from the lower boundary of the phase transition zone of the upper mantle at a depth of about 660 km, which suggests the possibility of using the SM-3KV-cor sensor also to analyze the features of the phase transition zone.</p>","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"60 1-3","pages":"29 - 42"},"PeriodicalIF":0.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161313","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
Impact of a Destructive Earthquake on People’s Life and Health 破坏性地震对人们生命和健康的影响
IF 0.3
Seismic Instruments Pub Date : 2025-06-02 DOI: 10.3103/S0747923925700136
S. N. Nazaretyan, R. A. Haroutiunian
{"title":"Impact of a Destructive Earthquake on People’s Life and Health","authors":"S. N. Nazaretyan,&nbsp;R. A. Haroutiunian","doi":"10.3103/S0747923925700136","DOIUrl":"10.3103/S0747923925700136","url":null,"abstract":"<p>Destructive earthquakes (intensity 9 on the EMS-98 scale, or <i>M</i> = 7.0–7.5), especially in developing countries, have a strong impact on the health and living conditions of people. They cause great loss of life both during and after an earthquake, since hazards to life and health are associated both with the destruction from the earthquake and with the living conditions that develop in its zone of influence. The main aim of the article is to highlight the most complete list of groups of factors affecting human health from a destructive earthquake and to identify the characteristics of these effects, including the most typical diseases. To conduct research and obtain generalizing conclusions, three multilaterally and in-depth studied earthquakes with severe consequences were selected. For the first time, the most complete list of the main factors of a destructive earthquake affecting people’s health has been compiled, which, according to their genesis, are divided into five groups. Typical diseases are predicted in different zones of damage to buildings and structures. They are presented in a table, indicating some parameters of their distribution area and the most characteristic diseases that have arisen according to the International Classification of Diseases ICD-10. A map of zones of three important interrelated consequences of earthquakes (damage to buildings, groups of impact factors, severity of probable diseases) has been compiled. Average graphs of changes in the level of impact of groups of earthquake factors on people’s health as a function of time are presented, as well as methodological recommendations and assessment data for quantitative calculations of the consequences of an earthquake.</p>","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"60 4-6","pages":"80 - 92"},"PeriodicalIF":0.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161315","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
Bursts of Synchronization of Torsion Pendulum Readings and Their Connection with Seismic Events 扭摆读数同步爆发及其与地震事件的联系
IF 0.3
Seismic Instruments Pub Date : 2025-06-02 DOI: 10.3103/S0747923925700082
A. A. Lyubushin, V. P. Matyunin, I. I. Kalinnikov, V. I. Isachenko, A. B. Manukin
{"title":"Bursts of Synchronization of Torsion Pendulum Readings and Their Connection with Seismic Events","authors":"A. A. Lyubushin,&nbsp;V. P. Matyunin,&nbsp;I. I. Kalinnikov,&nbsp;V. I. Isachenko,&nbsp;A. B. Manukin","doi":"10.3103/S0747923925700082","DOIUrl":"10.3103/S0747923925700082","url":null,"abstract":"<p>Synchronous recordings of the readings of two torsion pendulums located at a distance of about 3000 km from each other are considered: in the settlement of Mosrentgen (New Moscow) and Novosibirsk. The duration of joint records is 350 days, from August 19, 2022, to August 4, 2023. The hypothesis is considered that the excitation of oscillations of torsional pendulums precedes strong seismic events, including those whose epicenters are located far from the location of measurements. The presence of two synchronous measurement points makes it possible to eliminate the influence of intense local interference by assessing the coherence spectrum in a moving time window. The sequence of times of occurrence of maximum coherences in time windows of 1 h duration is analyzed together with the sequence of seismic events with a magnitude of at least 5 using a parametric model of interacting point processes (influence matrix method). The influence matrix method makes it possible to give a quantitative measure of the influence of two random time sequences on each other. The estimate of the correlation function between the daily values of the logarithms of seismic energy emissions exceeding a given threshold and the daily average maximum values of the elements of the influence matrix has a strong asymmetry, which gives grounds for quantitative confirmation of the hypothesis that the excitation of torsion pendulums precedes strong earthquakes with an average delay time of about 20 days.</p>","PeriodicalId":45174,"journal":{"name":"Seismic Instruments","volume":"60 1-3","pages":"19 - 28"},"PeriodicalIF":0.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161314","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
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