Preliminary reference Earth model: Difference between revisions

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PREM has been widely used as the basis for [[seismic tomography]] and related global [[geophysics|geophysical]] models.<ref>{{cite book|last=Dziewonski |first=A. M. |last2=Romanowicz |first2=B.A. |title=1.01 - Overview|journal= Treatise on Geophysics |editor-first=Gerald |editor-last=Schubert |date=2007 |pages=1–29 |isbn=9780444527486 |doi=10.1016/B978-044452748-6.00001-8}}</ref> It incorporates anelastic dispersion and [[seismic anisotropy|anisotropy]] and therefore it is frequency-dependent and transversely [[Isotropy|isotropic]] for the [[upper mantle (Earth)|upper mantle]].

PREM was developed by [[Adam Dziewonski|Adam M. Dziewonski]] and [[Don L. Anderson]] in response to guidelines of a "Standard Earth Model Committee" of the [[International Association of Geodesy]] (IAG) and the [[International Association of Seismology and Physics of the Earth’s Interior|International Association of Seismology and Physics of the Earth's Interior]] (IASPEI) Other Earth reference models include iasp91<ref>{{Cite book|title=IASPEI 1991 Seismological Tables|last=Kennett|first=B.L.N.|publisher=Bibliotech|year=1991|isbn=|___location=Canberra, Australia|pages=|via=}}</ref> and ak135.<ref>{{Cite journal|last=Kennett|first=B. L. N. |last2=Engdahl |first2=E. R. |last3=Buland |first3=R. |date=1995-07-01 |title=Constraints on seismic velocities in the Earth from traveltimes |journal=Geophysical Journal International |volume=122 |issue=1 |pages=108–124 |doi=10.1111/j.1365-246X.1995.tb03540.x |issn=1365-246X |bibcode=1995GeoJI.122..108K}}</ref>

==References==