Zobrazeno 1 - 10
of 242
pro vyhledávání: '"Tiziana Boffa-Ballaran"'
Autor:
Constanze Rösche, Tiziana Boffa Ballaran, Thomas Malcherek, Carsten Paulmann, Ross John Angel, Semën Gorfman, Boriana Mihailova
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-9 (2024)
Abstract The pressure-induced structural changes in the perovskite-type (ABO $$_3$$ 3 ) ferroelectric solid solution (1-x)Na $$_{0.5}$$ 0.5 Bi $$_{0.5}$$ 0.5 TiO $$_3$$ 3 -xBaTiO $$_3$$ 3 (NBT-xBT) at the morphotropic phase boundary (MPB) ( $$x_{\tex
Externí odkaz:
https://doaj.org/article/df90202ecd984098826f852527723ac1
Estimating the viscosity of volcanic melts from the vibrational properties of their parental glasses
Autor:
Michele Cassetta, Danilo Di Genova, Marco Zanatta, Tiziana Boffa Ballaran, Alexander Kurnosov, Marco Giarola, Gino Mariotto
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
Abstract The numerical modelling of magma transport and volcanic eruptions requires accurate knowledge of the viscosity of magmatic liquids as a function of temperature and melt composition. However, there is growing evidence that volcanic melts can
Externí odkaz:
https://doaj.org/article/4182c62ac40c4cdb8c404429f3489567
Autor:
Ross J. Angel
Publikováno v:
American Mineralogist. 91:969-970
Mr. President, Ladies and Gentlemen: It was a pleasant surprise when Tiziana asked me to introduce her as the recipient of the MSA award for 2005, as she has worked with many excellent mineralogists and crystallographers who have influenced and guide
Autor:
Helen Grüninger, Zhaodong Liu, Renée Siegel, Tiziana Boffa Ballaran, Tomoo Katsura, Jürgen Senker, Daniel J. Frost
Publikováno v:
Geophysical Research Letters, Vol 46, Iss 15, Pp 8731-8740 (2019)
Abstract Oxygen vacancies (OVs), that charge‐balance the replacement of octahedrally coordinated Si4+ by Al3+ in the mineral bridgmanite, will influence transport properties in the lower mantle but little is known about their stability and local st
Externí odkaz:
https://doaj.org/article/90659ba8242a43a5b26927a619afad58
Autor:
Nicki C. Siersch, Giacomo Criniti, Alexander Kurnosov, Tiziana Boffa Ballaran, Zhaodong Liu, Takayuki Ishii, Daniel J. Frost, Tony Yu, Yanbin Wang
Publikováno v:
American Mineralogist. 108:100-109
Akimotoite, a MgSiO3 polymorph present in the lower transition zone within ultramafic portions of subducting slabs and potentially also in the ambient mantle, will partition some amount of Al, raising the question of how this will affect its crystal
Autor:
Alan B. Woodland, Laura Uenver-Thiele, Tiziana Boffa Ballaran, Nobuyoshi Miyajima, Kevin Rosbach, Takayuki Ishii
Publikováno v:
American Mineralogist. 108:140-149
The stability of Fe5O6 has been experimentally determined under pressure-temperature conditions relevant for the Earth’s deeper upper mantle down to the upper portion of the lower mantle (to 28 GPa). In addition, we investigated the incorporation o
Publikováno v:
American Mineralogist. 108:217-221
Orthorhombic CaFe2O4-structured (Cf) Na-rich aluminous silicate (space group Pbnm) is a major mineral of metabasaltic rocks at lower mantle conditions and can, therefore, significantly affect the physical properties of subducted oceanic crusts. We at
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Autor:
Pedro Valdivia, Alessio Zandonà, Alexander Kurnosov, Tiziana Boffa-Ballaran, Joachim Deubener, Danilo Di Genova
Magma viscosity is one of the most critical physical properties controlling magma transport dynamics and eruptive style. Magma viscosity strongly depends on the melt phase composition (including dissolved volatile phases) and temperature, and, subord
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cc4adcb8ba5fc4240f83e9ad8fef5e5
Autor:
Luca Faccincani, Giacomo Criniti, Alexander Kurnosov, Tiziana Boffa Ballaran, Anthony C. Withers, Maurizio Mazzucchelli, Fabrizio Nestola, Massimo Coltorti
The dominant phases of Earth’s upper mantle are commonly referred to as nominally anhydrous minerals (NAMs) but may contain significant amounts of water. The colloquial term “water” in NAMs is related to the presence of hydroxyl-bearing (OH-) p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b964f8971ac951b43fda6513e705203c
https://doi.org/10.5194/egusphere-egu23-14573
https://doi.org/10.5194/egusphere-egu23-14573