Microseisms: A twenty-six-second spectral line in long-period earth motion
Microseisms: A twenty-six-second spectral line in long-period earth motion
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DOI：
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发表时间：
1980-08
影响因子：
3
通讯作者：
L. Holcomb
中科院分区：
文献类型：
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作者：
L. Holcomb
摘要 全球地球背景中存在一个周期为 26 秒的窄带微震峰值。在暴风雨期间，这种地面运动的幅度会增加到很高的水平，从而可以对其特征进行详细研究。分析表明，能量以瑞利波的形式从南大西洋的一个来源到达。该微震峰最重要的特性是它是非色散的，从而消除了深水海波色散作为隔离窄带能量的机制。
abstract A narrow-band microseismic peak exists in worldwide earth background near a period of 26 sec. During storms, the amplitude of this ground motion increases to high levels which allows detailed studies of its characteristics. Analysis indicates that the energy arrives as Rayleigh waves from a source in the southern Atlantic Ocean. The most significant property of this microseismic peak is that it is nondispersive, thereby eliminating deep-water ocean-wave dispersion as the mechanism for isolating the narrow-band energy.