Achievements and Prospects of Global Broadband Seismographic Networks After 30 Years of Continuous Geophysical Observations

IF 25.2 1区 地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS Reviews of Geophysics Pub Date : 2022-07-19 DOI:10.1029/2021RG000749
A. T. Ringler, R. E. Anthony, R. C. Aster, C. J. Ammon, S. Arrowsmith, H. Benz, C. Ebeling, A. Frassetto, W.-Y. Kim, P. Koelemeijer, H. C. P. Lau, V. Leki?, J. P. Montagner, P. G. Richards, D. P. Schaff, M. Vallée, W. Yeck
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引用次数: 14

Abstract

Global seismographic networks (GSNs) emerged during the late nineteenth and early twentieth centuries, facilitated by seminal international developments in theory, technology, instrumentation, and data exchange. The mid- to late-twentieth century saw the creation of the World-Wide Standardized Seismographic Network (1961) and International Deployment of Accelerometers (1976), which advanced global geographic coverage as seismometer bandwidth increased greatly allowing for the recording of the Earth's principal seismic spectrum. The modern era of global observations and rapid data access began during the 1980s, and notably included the inception of the GEOSCOPE initiative (1982) and GSN (1988). Through continual improvements, GEOSCOPE and the GSN have realized near-real time recording of ground motion with state-of-art data quality, dynamic range, and timing precision to encompass 180 seismic stations, many in very remote locations. Data from GSNs are increasingly integrated with other geophysical data (e.g., space geodesy, infrasound and Interferometric Synthetic Aperture Radar). Globally distributed seismic data are critical to resolving crust, mantle, and core structure; illuminating features of the plate tectonic and mantle convection system; rapid characterization of earthquakes; identification of potential tsunamis; global nuclear test verification; and provide sensitive proxies for environmental changes. As the global geosciences community continues to advance our understanding of Earth structure and processes controlling elastic wave propagation, GSN infrastructure offers a springboard to realize increasingly multi-instrument geophysical observatories. Here, we review the historical, scientific, and monitoring heritage of GSNs, summarize key discoveries, and discuss future associated opportunities for Earth Science.

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30年连续地球物理观测后全球宽带地震台网的成就与展望
全球地震台网(GSNs)出现于19世纪末和20世纪初,得益于理论、技术、仪器和数据交换方面的开创性国际发展。20世纪中后期建立了全球标准化地震台网(1961年)和国际加速度计部署(1976年),随着地震仪带宽的大大增加,可以记录地球的主要地震频谱,它们扩大了全球地理覆盖范围。全球观测和快速数据获取的现代时代始于20世纪80年代,主要包括GEOSCOPE倡议(1982年)和GSN(1988年)的启动。通过不断改进,GEOSCOPE和GSN已经实现了近实时的地面运动记录,具有最先进的数据质量,动态范围和定时精度,涵盖180个地震站,其中许多位于非常偏远的地区。来自gsn的数据越来越多地与其他地球物理数据(例如,空间大地测量、次声和干涉合成孔径雷达)相结合。全球分布的地震数据对于解析地壳、地幔和地核结构至关重要;板块构造与地幔对流系统的启发性特征地震的快速表征;识别潜在海啸;全球核试验核查;并为环境变化提供敏感的代理。随着全球地球科学界对地球结构和控制弹性波传播过程的理解不断加深,GSN基础设施为实现越来越多的多仪器地球物理观测提供了跳板。在这里,我们回顾了GSNs的历史、科学和监测遗产,总结了关键发现,并讨论了地球科学未来的相关机会。
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来源期刊
Reviews of Geophysics
Reviews of Geophysics 地学-地球化学与地球物理
CiteScore
50.30
自引率
0.80%
发文量
28
审稿时长
12 months
期刊介绍: Geophysics Reviews (ROG) offers comprehensive overviews and syntheses of current research across various domains of the Earth and space sciences. Our goal is to present accessible and engaging reviews that cater to the diverse AGU community. While authorship is typically by invitation, we warmly encourage readers and potential authors to share their suggestions with our editors.
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