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USArray Gallery
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Here follow a list of figures with relevance to the idea of
a dense network of permanent stations in the USA. The figures
have been prepared by Bob Woodward and Harold Bolton of the USGS.
Station map 1
Station map 2
Station map 3
Median noise levels, NSN versus GSN/IU (Z)
Median noise levels, NSN versus GSN/IU (NS,EW)
Relative Noise Levels (Z)
Relative Noise Levels (NS, EW)
Göran Ekström,
Department of Earth and Planetary Sciences, Harvard University,
copyright ©1998, all rights reserved