Local infrasound signals from the Tokachi-Oki earthquake

Details Local infrasound signals from the Tokachi-Oki earthquake Local infrasound signals from the Tokachi-Oki earthquake

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3120605k&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 20, CiteID L20605

Computer Science

Sound

3

Meteorology And Atmospheric Dynamics: Land/Atmosphere Interactions, Meteorology And Atmospheric Dynamics: Instruments And Techniques, Seismology: Earthquake Ground Motions And Engineering, Seismology: Instruments And Techniques, General Or Miscellaneous: Instruments Useful In Three Or More Fields

Scientific paper

A great earthquake (Mw = 8.3) and aftershock (Mw = 7.4) occurred near Hokkaido, Japan on September 25, 2003. This earthquake and aftershock were sources of local and epicentral infrasound signals observed at two seismo-acoustic arrays in the Republic of Korea. Local infrasound results when seismic signals near the receiver couple to the atmosphere. The local cross coupling from seismic ground motion to infrasound signal at two seismo-acoustic arrays enabled us to compute a seismic-to-infrasound transfer function at each array. The observed transfer function quantifies the microphone response when the seismometer response is known. When seismometers and infrasound gauges are collocated, this procedure can provide field calibration.

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