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地震学报（英文版）
中国地震学会
地震学报（英文版）

中国地震学会

陈运泰

双月刊

1000-9116

dzxb@ns.cdsn.org.cn

010-68473364

100081

北京民族学院南路5号（北京8116信箱）

地震学报（英文版）/Journal Earthquake ScienceCSCD
查看更多>>A Brief Introduction to ACTA SEISMOLOGICA SINICA(The Bulletin of the Seismological Society of China)Acta Seismologica Sinica is a comprehensive publication on seismology by the Seismological Society of China. Its Honorary Editor-in-Chief is Professor and Member of the Chinese Academy of Sciences Xin Ling QIN, Editor-in-Chief is Professor and Member of the CAS Yun Tai CHEN. The first issue of Chinese edition of the ASS was published in 1979, and that of the English edition in 1988. From 1994 both the English and Chinese editions started to publish not only one-to-one correspondence but also distributed to domestic and abroad simultaneously. From 1997, the publication period was changed from four to six issues per year. The two editions of ASS have been brought into Wanfang Digitized Journal Group and China Academy Journal Compact Disk (CAJ-CD) and China Journal Network (CJN). It is intended for those scientists and engineers, teachers and students in universities and colleges, engaged in seismology and geophysics in China and abroad. The main topics published are as follows: (1) Results of scientific and technical research in seismology as well as papers regarding geophysics, tectonics and engineering related to earthquake studies; (2) Articles presenting differences of scientific point of view in the field of seismology; (3) The present status and significant advances on research related to seismology; (4) Comments and discussions concerning seismology; (5) The recent trend of science and technology in seismology. ASS is a very important core journal in seismology and geophysics in China.In 1992, ASS won the First Class Prize which awarded by the State Seismological Bureau of China in May, First Class Prize by the Chinese Association of Science and Technology in September, First Class Prize by Beijing Editorial Society in December, and First Class Prize by the Department of Propaganda of Central committee of Chinese Communist Party, State Science and Technology Commission of China and the Office of Press and Publication of China in December. In 1996, ASS won again the First Class Prize which awarded by the China Seismological Bureau, Second class prize by the State Science and Technology Commission of China, and Second Class Prize in the whole nation compare and assessment of journal. In 1999, ASS won the “Nomination Prize” of China journal. In 2001, ASS was selected to the Chinese Journal Square Matrix, and won the “Double Prize Journal” of China. So far, Acta Seismologica Sinica has been included by the following important searching system, database and relating literature: 1)Engineering Index(EI)2)Реферативны Журнел （РЖ）3)Science Abstracts (SA)4)Current Bibliography of Science and Technology, Japan (CBSTJ)5)Bibliography and Index of Geology (GeoRef)6)Elsevier Science, Geo Abstracts2002-04-18
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    The MW5.5 earthquake on August 6, 2023, in Pingyuan, Shandong, China: A rupture on a buried fault

    Zhe ZhangLisheng XuLihua Fang
    1-12页
    查看更多>>摘要：On August 6, 2023, a magnitude MW5.5 earthquake struck Pingyuan County, Dezhou City, Shandong Province, China. This event was significant as no large earthquakes had been recorded in the region for over a century, and no active fault had been previously identified. This study collects 1309 P-wave arrival times and 866 S-wave arrival times from 74 seismic stations less than 200 km to the epicenter to constrain the spatial distribution of the mainshock and its 125 early aftershocks by the double difference earthquake relocation method, and selects 864 P-waveforms from 288 stations located within 800 km of the epicenter to constrain the focal mechanism solution of the mainshock through centroid moment tensor inversion. The relocation and the inversion indicate, the Pingyuan MW5.5 earthquake was caused by a rupture on a buried fault, likely an extensive segment of the Gaotang fault. This buried fault exhibited a dip of approximately 75° to the northwest, with a strike of 222°, similar to the Gaotang fault. The rupture initiated at the depth of 18.6 km and propagated upward and northeastward. However, the ground surface was not broken. The total duration of the rupture was ～6.0 s, releasing the scalar moment of 2.5895 × 1017 N·m, equivalent to MW5.54. The moment rate reached the maximum only 1.4 seconds after the rupture initiation, and the 90％ scalar moment was released in the first 4.6 s. In the first 1.4 seconds of the rupture process, the rupture velocity was estimated to be 2.6 km/s, slower than the local S-wave velocity. As the rupture neared its end, the rupture velocity decreased significantly. This study provides valuable insights into the seismic characteristics of the Pingyuan MW5.5 earthquake, shedding light on the previously unidentified buried fault responsible for the seismic activity in the region. Understanding the behavior of such faults is crucial for assessing seismic hazards and enhancing earthquake preparedness in the future.
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    On the eigenvalues and eigendisplacement of the critical mode in horizontally layered media

    Shaotong WangLaiyu Lu
    13-35页
    查看更多>>摘要：Wave propagation in horizontally layered media is a classical problem in seismic-wave theory. In semi-infinite space, a nondispersive Rayleigh wave mode exists, and the eigendisplacement decays exponentially with depth. In a layered model with increasing layer velocity, the phase velocity of the Rayleigh wave varies between the S-wave velocity of the bottom half-space and that of the classical Rayleigh wave propagated in a supposed half-space formed by the parameters of the top layer. If the phase velocity is the same as the P- or S-wave velocity of the layer, which is called the critical mode or critical phase velocity of surface waves, the general solution of the wave equation is not a homogeneous (expressed by trigonometric functions) or inhomogeneous (expressed by exponential functions) plane wave, but one whose amplitude changes linearly with depth (expressed by a linear function). Theories based on a general solution containing only trigonometric or exponential functions do not apply to the critical mode, owing to the singularity at the critical phase velocity. In this study, based on the classical framework of generalized reflection and transmission coefficients, the propagation of surface waves in horizontally layered media was studied by introducing a solution for the linear function at the critical phase velocity. Therefore, the eigenvalues and eigenfunctions of the critical mode can be calculated by solving a singular problem. The eigendisplacement characteristics associated with the critical phase velocity were investigated for different layered models. In contrast to the normal mode, the eigendisplacement associated with the critical phase velocity exhibits different characteristics. If the phase velocity is equal to the S-wave velocity in the bottom half-space, the eigendisplacement remains constant with increasing depth.
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    • 万方数据
    • 维普

    A modified stochastic finite-fault method for estimating strong ground motion: Validation and application

    Xinjuan HeHua Pan
    36-50页
    查看更多>>摘要：We developed a modified stochastic finite-fault method for estimating strong ground motions. An adjustment to the dynamic corner frequency was introduced, which accounted for the effect of the location of the subfault relative to the hypocenter and rupture propagation direction, to account for the influence of the rupture propagation direction on the subfault dynamic corner frequency. By comparing the peak ground acceleration (PGA), pseudo-absolute response spectra acceleration (PSA, damping ratio of 5％), and duration, the results of the modified and existing methods were compared, demonstrating that our proposed adjustment to the dynamic corner frequency can accurately reflect the rupture directivity effect. We applied our modified method to simulate near-field strong motions within 150 km of the 2008 MW7.9 Wenchuan earthquake rupture. Our modified method performed well over a broad period range, particularly at 0.04-4 s. The total deviations of the stochastic finite-fault method (EXSIM) and the modified EXSIM were 0.1676 and 0.1494, respectively. The modified method can effectively account for the influence of the rupture propagation direction and provide more realistic ground motion estimations for earthquake disaster mitigation.
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    Intrinsic and scattering attenuations of the Sichuan-Yunnan region in China from S coda waves

    Tian LiLei ZhangXiaodong SongQincai Wang...
    51-66页
    查看更多>>摘要：Seismic attenuation is a fundamental property of the Earth's media. Attenuation structure for the complicated geological structures with strong seismicity in the Sichuan-Yunnan region is poorly studied. In this study, we collected 108,399 waveforms of 11,517 local small earthquakes with magnitudes between 1.5 and 3.5 from January 2014 to September 2021 in the Sichuan-Yunnan region and its adjacent areas. We employed an envelope inversion technique for separating the intrinsic and scattering attenuations of the S coda wave, and obtained the intrinsic and scattering attenuation structures for frequencies between 0.25 and 8.00 Hz. The attenuation structures correlate well with the geological units, and some major faults mark the attenuation variations where historic large earthquakes have occurred. The regional average attenuation shows a negative frequency dependence. The average scattering attenuation has a faster descending rate than the average intrinsic attenuation, and is dominant at low frequencies, while at high frequencies the average intrinsic attenuation is stronger. The lateral variation in the intrinsic attenuation is consistent with the variation in heat flow, the scattering attenuation may be related to the scatter distribution and size. The total attenuation is consistent with the previous studies in this region, and the separate intrinsic and scattering attenuation may be useful in understanding regional tectonics and important in earthquake prevention and disaster reduction.
      原文链接:
    • 万方数据
    • 维普

    The accessible seismological dataset of a high-density 2D seismic array along Anninghe fault

    Weifan LuZeyan ZhaoHan YueShiyong Zhou...
    67-77页
    查看更多>>摘要：The scientific goal of the Anninghe seismic array is to investigate the detailed geometry of the Anninghe fault and the velocity structure of the fault zone. This 2D seismic array is composed of 161 stations forming sub-rectangular geometry along the Anninghe fault, which covers 50 km and 150 km in the fault normal and strike directions, respectively, with ～ 5 km intervals. The data were collected between June 2020 and June 2021, with some level of temporal gaps. Two types of instruments, i.e. QS-05A and SmartSolo, are used in this array. Data quality and examples of seismograms are provided in this paper. After the data protection period ends (expected in June 2024), researchers can request a dataset from the National Earthquake Science Data Center.
      原文链接:
    • 万方数据
    • 维普

    Analysis of faulting destruction and water supply pipeline damage from the first mainshock of the February 6, 2023 Türkiye earthquake doublet

    Xiaoqing FanLibao ZhangJuke WangYefei Ren...
    78-90页
    查看更多>>摘要：In 2023, two consecutive earthquakes exceeding a magnitude of 7 occurred in Türkiye, causing severe casualties and economic losses. The damage to critical urban infrastructure and building structures, including highways, railroads, and water supply pipelines, was particularly severe in areas where these structures intersected the seismogenic fault. Critical infrastructure projects that traverse active faults are susceptible to the influence of fault movement, pulse velocity, and ground motions. In this study, we used a unique approach to analyze the acceleration records obtained from the seismic station array (9 strong ground motion stations) located along the East Anatolian Fault (the seismogenic fault of the MW7.8 mainshock of the 2023 Türkiye earthquake doublet). The acceleration records were filtered and integrated to obtain the velocity and displacement time histories. We used the results of an on-site investigation, jointly conducted by China Earthquake Administration and Türkiye's AFAD, to analyze the distribution of PGA, PGV, and PGD recorded by the strong motion array of the East Anatolian Fault. We found that the maximum horizontal PGA in this earthquake was 3.0 g, and the maximum co-seismic surface displacement caused by the East Anatolian Fault rupture was 6.50 m. As the fault rupture propagated southwest, the velocity pulse caused by the directional effect of the rupture increased gradually, with the maximum PGA reaching 162.3 cm/s. We also discussed the seismic safety of critical infrastructure projects traversing active faults, using two case studies of water supply pipelines in Türkiye that were damaged by earthquakes. We used a three-dimensional finite element model of the PE (polyethylene) water pipeline at the Islahiye State Hospital and fault displacement observations obtained through on-site investigation to analyze pipeline failure mechanisms. We further investigated the effect of the fault-crossing angle on seismic safety of a pipeline, based on our analysis and the failure performance of the large-diameter Thames Water pipeline during the 1999 Kocaeli earthquake. The seismic method of buried pipelines crossing the fault was summarized.
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    Erratum to: A review of the wave gradiometry method for seismic imaging

    Chuntao LiangFeihuang CaoZhijin LiuYingna Chang...
    91页
      原文链接:
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