Abstract
Seismic tomography is the principal tool to probe the deep interior of the Earth. Models of seismic anisotropy induced by crystal alignment provide insight into the underlying convective motion, and variations of density allow us to discriminate between thermal and compositional heterogeneities. This chapter reviews on which class of models there is agreement and where further investigation is required. The main emphasis is on the imaging itself and not so much its thermo-chemical interpretation, although the chapter provides some indications. It also discusses the case of isotropic velocity tomography, anisotropy, density and attenuation imaging in decreasing order of consensus. Finally, it provides some suggestions for future work.
Original language | English |
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Title of host publication | Physics and Chemistry of the Deep Earth |
Editors | S.-I. Karato |
Publisher | Wiley-Blackwell |
Pages | 324-350 |
Number of pages | 412 |
ISBN (Print) | 978-0-470-65914-4 |
DOIs | |
Publication status | Published - 2013 |
Keywords
- anisotropy
- attenuation
- density
- Earth
- imaging
- isotropic velocity tomography
- seismic tomography