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SPICeD: imaging the deep Earth

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Michael Kendall and George Helffrich respond to Alan Douglas’s paper in the previous issue of Astronomy & Geophysics with a prototype three-component broadband seismic network for the UK.

There are two boundaries in the Earth’s deep interior that are as significant in terms of contrast in material properties and dynamics as the lithosphere–atmosphere boundary, where we live. The natures of the core-mantle boundary and the inner-core/outer-core boundary have significant implications for the stability of the Earth’s magnetic field, style of convection, moment of inertia and length of day. An array of broadband three-component seismometers (SPICeD) spanning Scotland, England and France has been deployed with the aim of studying these dramatic interfaces within the Earth. A secondary aim of the deployment was to install a working prototype for a permanent three-component broadband seismic network in the UK, as advocated by Alan Douglas in the previous issue of this journal (Douglas 2001).
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Document Type: Research Article

Affiliations: 1: Reader in Seismology at the University of Leeds (, Email: [email protected] 2: Reader in Geophysics at the University of Bristol.

Publication date: 2001-06-01

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