Infrasound associated with 2004-2005 large Sumatra earthquakes and tsunami

Details Infrasound associated with 2004-2005 large Sumatra earthquakes and tsunami Infrasound associated with 2004-2005 large Sumatra earthquakes and tsunami

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3219802l&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 19, CiteID L19802

Physics

Geophysics

16

Mathematical Geophysics: Wave Propagation (0689, 2487, 4275, 4455, 6934), Atmospheric Processes: General Circulation (1223), Oceanography: Physical: Air/Sea Interactions (0312, 3339), Seismology: Seismic Monitoring And Test-Ban Treaty Verification

Scientific paper

Large earthquakes that occurred in the Sumatra region in 2004 and 2005 generated acoustic waves recorded by the Diego Garcia infrasound array. The Progressive Multi-Channel Correlation (PMCC) analysis is performed to detect the seismic and infrasound signals associated with these events. The study is completed by an inverse location procedure that permitted reconstruction of the source location of the infrasonic waves. The results show that ground motion near the epicenter and vibrations of nearby land masses efficiently produced infrasound. The analysis also reveals unique evidence of long period pressure waves from the tsunami earthquake (M9.0) of December 26, 2004.

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