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<datestamp>2018-01-11</datestamp>
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<title lang=en>Is the spin transition in Fe2+-bearing perovskite visible in seismology?</title>
<creator>Caracas, Razvan</creator>
<creator>MAINPRICE, David</creator>
<creator>Thomas, Christine</creator>
<contributor>Laboratoire de Sciences de la Terre (LST) ; École normale supérieure - Lyon (ENS Lyon) - Université Claude Bernard Lyon 1 (UCBL) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institut für Geophysik, Westfälische Wilhelms Universität Münster ; Université du Québec</contributor>
<description>International audience</description>
<source>ISSN: 0094-8276</source>
<source>EISSN: 1944-8007</source>
<source>Geophysical Research Letters</source>
<publisher>American Geophysical Union</publisher>
<identifier>hal-00512662</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00512662</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00512662</source>
<source>Geophysical Research Letters, American Geophysical Union, 2010, 37, pp.L13309. 〈10.1029/2010GL043320〉</source>
<identifier>DOI : 10.1029/2010GL043320</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1029/2010GL043320</relation>
<language>en</language>
<subject lang=en>spin transition</subject>
<subject lang=en>seismic anistropy</subject>
<subject lang=en>lower mantle</subject>
<subject>[SDU.STU.GP] Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph]</subject>
<subject>[PHYS.PHYS.PHYS-GEO-PH] Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph]</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>We determine the elasticity of FeSiO3 perovskite for various spin configurations using density-functional theory calculations. The elastic moduli and the bulk seismic wave velocities are weakly affected by the spin transition. However we show that the intrinsic differences in seismic anisotropy between the high-spin and low-spin phases of Fe-bearing perovskite coupled with lattice preferred orientation that can develop due and during the convection may lead to distinct seismic signatures between the top and the bottom of the lower mantle. These signatures should be detectable in observations and they need to be taken into account in tomographic studies of the Earth's lower mantle.</description>
<date>2010</date>
</dc>
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