USArray Gallery


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