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Infrasound Detection of Large Mining Blasts in Kazakstan

机译:哈萨克斯坦大型采矿爆炸的次声检测

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摘要

— We describe infrasonic observations recorded since October, 1997, at the Kurchatov Observatory in Kazakstan from large mining blasts in Kazakstan and Siberia. Seismic signals are regularly recorded on a 21-element cross-array from events located at the Ekibastuz mine, 250 km NW of Kurchatov. However, associated infrasonic detections are infrequent and appear to be seasonal, with maximum numbers of detections occurring during November to January. Raytracing through model atmosphere temperature and wind profiles predicts enhanced infrasound reception during the winter months, when the prevailing stratospheric winds blow towards Kurchatov. In addition, raytracing confirms that the first infrasound arrivals at Kurchatov propagate through the troposphere and are followed, some 50–70 s later, by a stratospheric arrival.
机译:—我们描述了自1997年10月以来在哈萨克斯坦库尔恰托夫天文台从哈萨克斯坦和西伯利亚的大型采矿爆炸中记录的次声观测。来自库尔恰托夫西北250公里的Ekibastuz矿的事件定期将地震信号记录在21个元素的交叉阵列上。但是,相关的次声波检测很少见,而且似乎是季节性的,在11月至1月期间发生的检测次数最多。通过模型大气温度和风廓线进行的射线追踪预测,在冬季,当盛行的平流层风吹向库尔恰托夫时,次声接收将增强。另外,射线追踪证实了次声的首次到达库尔恰托夫是通过对流层传播的,大约在50-70 s之后是平流层的到达。

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  • 来源
    《Pure and Applied Geophysics》 |2002年第5期|1063-1079|共17页
  • 作者单位

    Lamont-Doherty Earth Observatory Columbia University Palisades NY 10964 U.S.A. E-mail: wykim@ldeo.columbia.edu;

    Lamont-Doherty Earth Observatory Columbia University Palisades NY 10964 U.S.A. E-mail: wykim@ldeo.columbia.edu;

    Institute of Geophysical Research National Nuclear Center Semipalatinsk-21 Kazakstan.;

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  • 正文语种 eng
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  • 关键词

    Key words: Infrasound; mining blasts; Kazakstan.;

    机译:关键词:次声;采矿爆炸;哈萨克斯坦。;

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