Unknown
In:
Eos Trans. AGU, Warszawa, Inst. Electrical & Electronics Engineers, vol.
86, no. 35, pp. 317 & 320, pp. 2121, (ISBN: 0534351875, 2nd edition)
Publication Date:
2005
Description:
Infrasound arrays in the Pacific and Indian oceans that are part of the
International Monitoring System (IMS) of the Comprehensive Nuclear Test Ban Treaty
(CTBT) recorded distinct signatures associated with the 26 December 2004 Sumatra
earthquake (M9, http://earthquake.usgs.gov/) and tsunami. Although the radiation of
infrasound from large continental earthquakes is established [e.g., Le Pichon et al.,
2003], the results presented in the present article indicate that islands undergoing
significant surface displacements from submarine earthquakes can produce infrasound. Far
more intriguing is the possibility that the initiation and propagation of a tsunami may
produce low-frequency sound near the source as well as along coastlines and basins.
Since distant sound effectively propagates at ~300 m/s and tsunamis propagate at ~200
m/s, precursory sound could potentially be used as a discriminant for tsunami genesis
Keywords:
Tsunami(s)
;
Acoustics
;
Waves
;
Earthquake
;
Banda
;
Aceh
;
Indonesia
;
Garces
;
Pichon
;
4564
;
Oceanography:
;
Physical:
;
Tsunamis
;
and
;
storm
;
surges
;
7209
;
Seismology:
;
Earthquake
;
dynamics
;
9805
;
General
;
or
;
Miscellaneous:
;
Instruments
;
useful
;
in
;
three
;
or
;
more
;
fields
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