Origin of Earth's ground noise from 2 to 20 mHz
K Nishida, N Kobayashi, Y Fukao - Geophysical research letters, 2002 - Wiley Online Library
K Nishida, N Kobayashi, Y Fukao
Geophysical research letters, 2002•Wiley Online LibraryLong‐period seismology probes the Earth's interior through the seismic passband in a
period range from 50 to 500 s. The limitation of seismic transparency in this band is known
but the source of limitation has been a long‐standing puzzle. Here we report evidence that
the transparency is limited, over the entire passband, by fundamental Rayleigh waves
excited by global and random sources in a thin layer just above the Earth's surface.
period range from 50 to 500 s. The limitation of seismic transparency in this band is known
but the source of limitation has been a long‐standing puzzle. Here we report evidence that
the transparency is limited, over the entire passband, by fundamental Rayleigh waves
excited by global and random sources in a thin layer just above the Earth's surface.
Long‐period seismology probes the Earth's interior through the seismic passband in a period range from 50 to 500 s. The limitation of seismic transparency in this band is known but the source of limitation has been a long‐standing puzzle. Here we report evidence that the transparency is limited, over the entire passband, by fundamental Rayleigh waves excited by global and random sources in a thin layer just above the Earth's surface.
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