Adiabatic temperature profile in the mantle

Tomoo Katsura, Akira Yoneda, Daisuke Yamazaki, Takashi Yoshino, Eiji Ito, Daisuke Suetsugu, Craig Bina, Toru Inoue, Douglas Wiens, Mark Jellinek

Research output: Contribution to journalArticle

217 Citations (Scopus)

Abstract

The temperature at the 410-km discontinuity is re-evaluated by comparing the depth of the discontinuity with the olivine-wadsleyite transition pressure obtained using in situ X-ray diffraction experiments by Katsura et al. (2004a) and equation of state (EoS) of MgO by Tange et al. (2009) (Tange scale) and Matsui et al. (2000). The newly estimated temperature is 1830 ± 48. K, 70. K higher than that by our previous estimation. The EoSes of the major mantle minerals (olivine, wadsleyite, ringwoodite and perovskite) are also recalculated using the Tange scale. The adiabatic temperature gradient is calculated using the thermal expansion coefficient obtained from these EoSes. The adiabatic temperature gradient gradually decreases with increasing depth without a phase transition, and abruptly increases in association with phase transitions. The adiabatic temperature gradients are found to be 04-0.5 and 0.3. K/km in the upper and lower parts of the mantle, respectively. The temperatures at a depth of 200 km, the bottom of the mantle transition zone, the top of the lower mantle and a depth of 2700 km are found to be 1720 ± 40, 2010 ± 40, 1980 ± 40, and 2730 ± 50. K. The mantle potential temperature is found to be 1610 ± 35. K.

Original languageEnglish
Pages (from-to)212-218
Number of pages7
JournalPhysics of the Earth and Planetary Interiors
Volume183
Issue number1-2
DOIs
Publication statusPublished - Nov 2010

Keywords

  • Adiabatic temperature gradient
  • Geotherm
  • Mantle
  • Seismic discontinuity
  • Thermal expansion

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Geophysics
  • Physics and Astronomy (miscellaneous)
  • Space and Planetary Science

Fingerprint Dive into the research topics of 'Adiabatic temperature profile in the mantle'. Together they form a unique fingerprint.

  • Cite this

    Katsura, T., Yoneda, A., Yamazaki, D., Yoshino, T., Ito, E., Suetsugu, D., Bina, C., Inoue, T., Wiens, D., & Jellinek, M. (2010). Adiabatic temperature profile in the mantle. Physics of the Earth and Planetary Interiors, 183(1-2), 212-218. https://doi.org/10.1016/j.pepi.2010.07.001