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Extracting information from noise

Baptie, Brian. 2010 Extracting information from noise. Earthwise, 26. 64-65.

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Abstract/Summary

Seismic waves created by sources such as wind, the ocean and human activity propagate inside the Earth all the time. Such waves are often regarded as ‘noise’ by seismologists, however, they travel through the Earth in exactly the same way as those waves from earthquakes. Recent advances in theory have shown that ambient noise recorded at two seismic stations can be combined to provide information about the properties of the Earth between the two stations. This is known as seismic interferometry and has revolutionised seismology over the past few years.

Item Type: Publication - Article
Programmes: BGS Programmes 2010 > Earth hazards and systems
ISSN: X780667289
Date made live: 16 Mar 2012 10:14
URI: http://nora.nerc.ac.uk/id/eprint/17319

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