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High-Pressure Earth and Planetary Science in the last and next decade

Understanding formations, evolutions and interiors of terrestrial planets and moons is an important research target. Advances in seismological techniques enable us to image the detailed inner structure of the Earth. Dramatic technological developments can provide new observation data about not only the Earth but also the others. Several planetary exploration missions are in progress (e.g., BepiColombo for Mercury; InSight for Mars), and we’ll obtain the updated information of planets in the near future. In order to interpret the observation, high-pressure data of planetary materials (silicate minerals as crust and mantle, iron alloys as core) are required.

This SPEPS aims to bring together high-pressure and temperature experiments on physics and chemistry of deep planetary materials, natural observation, and theoretical modeling within the principal subject areas of 'high-pressure science'.

  1. The Accessible Silicate Earth (ASE) has a higher 142Nd/144Nd ratio than most chondrites. Thus, if the Earth is assumed to have formed from these chondrites, a complement low-142Nd/144Nd reservoir is needed. Such ...

    Authors: Nozomi Kondo, Takashi Yoshino, Kyoko N. Matsukage and Tetsu Kogiso
    Citation: Progress in Earth and Planetary Science 2016 3:25
  2. Extensive experimental studies on the structure and density of silicate glasses as laboratory analogs of natural silicate melts have attempted to address the nature of dense silicate melts that may be present ...

    Authors: Itaru Ohira, Motohiko Murakami, Shinji Kohara, Koji Ohara and Eiji Ohtani
    Citation: Progress in Earth and Planetary Science 2016 3:18
  3. Multigrain X-ray diffraction (XRD) can be used to accurately calculate the unit cell parameters of individual mineral phases in a mineral assemblage contained in a diamond anvil cell (DAC). Coexisting post-per...

    Authors: Li Zhang, Yue Meng and Ho-kwang Mao
    Citation: Progress in Earth and Planetary Science 2016 3:13
  4. Sound velocities of bridgmanite measured in the laboratory are a key to deciphering the composition of the lower mantle. Here, we report Debye sound velocities determined using nuclear inelastic scattering (NI...

    Authors: Catherine McCammon, Razvan Caracas, Konstantin Glazyrin, Vasily Potapkin, Anastasia Kantor, Ryosuke Sinmyo, Clemens Prescher, Ilya Kupenko, Aleksandr Chumakov and Leonid Dubrovinsky
    Citation: Progress in Earth and Planetary Science 2016 3:10
  5. Because of the high energies involved, giant impacts that occur during planetary accretion cause large degrees of melting. The depth of melting in the target body after each collision determines the pressure a...

    Authors: Jellie de Vries, Francis Nimmo, H. Jay Melosh, Seth A. Jacobson, Alessandro Morbidelli and David C. Rubie
    Citation: Progress in Earth and Planetary Science 2016 3:7
  6. Throughout the Earth’s history, mass transport involved fluids. In order to address the circumstances under which Zr4+ may have been transported in this manner, its solubility behavior in aqueous fluid with and w...

    Authors: Bjorn Mysen
    Citation: Progress in Earth and Planetary Science 2015 2:38