廣瀬敬研究室

Earth and Planetary Science, Tokyo Institute of Technology

We investigate the Earth's deep interior materials and dynamics with ultra-high pressure and temperature experiments.

We know that the interior of the earth is actually divided into many layers, just like an onion. When you peel away these layers one at a time from the outside in the same way you would peel an onion's skin, you finally come to the core. The mantle above the core is also divided into four layers, and by 1974 we had identified what the first three layers were made of. When it comes to the lowest layer, the fourth layer, however, there were all kinds of hypotheses but they all remained in the realm of conjecture. This is why I wanted to elucidate the true nature of this material that formed the fourth layer.

Message

My own determination as a scientist to take up for the first time in the world experiments that nobody had ever attempted.

The most important things are enthusiasm, effort and a little bit of luck. Moreover, in everything you do, it is important to first meet the challenge without making up your mind at the outset that it is impossible. This simple way of looking at things will change your life significantly. If some of you hold the view that you may not be able to pursue the scientific path just because your grades aren't good, get rid of such a silly notion immediately and instead pursue every challenge that comes your way. When you do that, the path to the future will naturally open up before you.

Appearance

The Hirose laboratory in this building

Kei Hirose

Professional Career:

Post-Doctoral Fellow, The University of Tokyo (1994)

Assistant Professor, Tokyo Institute of Technology (1995-2000)

Visiting Scientist, Geophysical Laboratory, Carnegie Institution of Washington (1996-1998)

Associate Professor, Tokyo Institute of Technology (1999-2005)

Professor, Tokyo Institute of Technology (2006-present)

Director, Earth-Life Science Institute (2012-present)

Awards:

Inoue Prize in 2006

JSPS prize in 2008

Japan IBM prize in 2007

Thomson Scientific Research Front Award in 2007

Japan Academy Award in 2011

Science Innovation Award – Ringwood medal from the European

Association of Geochemistry in 2011

Profile

Members

Ph. D. Student

Chie Kato

MS Graduate Student

Yuko Mori

Shoh Tagawa

Akira Morishita

Undergraduate Student

Yuto Kidokoro

Yuki Nakashima

OB/OG

Motohiko Murakami [Tohoku University]

Tetsuya Komabayashi [The University of Edinburgh]

Yasuhiro Kuwayama [Ehime University]

Shigehiko Tateno [Okayama University]

Ryosuke Sinmyo [Universitaet Bayreuth]

Kenji Ohta [Tokyo Institute of Technology]

Haruka Ozawa [Okayama University]

Hitoshi Gomi [Geophysical Laboratory]

Saori Imada [SPring-8]

PostPerovskite

Diamond anvil cell (left) and diamond used in experiment (center), Transmission Electron Microscope combined with EDS (right)

PostPerovskite phase was discovered in the condition of lowermost lower mantle (the red zone) (Murakami et. al. Science 2004)

Facilities

Diamond Anvil Cell | Stereomicroscope | Microscope combined with Manipulator

Laser raman measuring apparatus ＆ CO2 laser heating system | YAG／YLF heating laser system ＆ laser processing machine

Feild Emission type EPMA | TEM

In-situ X-ray diffraction measuring apparatus @SPring-8 BLXU Beamline

QuickCoater | Ion slicer | Freezing machine

Contact

Dr. Kei Hirose| kei at elsi.jp

Publications

152. Wentzcovitch, R., Umemoto, K., Kawamura, K., Hirose, K.,

Post-stishovite transition in hydrous aluminous SiO2,

Earth and Planetary Science Letters, 418, 11-19, 2015.

151. Tateno, S., Kuwayama, Y., Hirose, K., Ohishi, Y.

The structure of Fe-Si alloy in Earth's inner core,

Earth and Planetary Science Letters, 418, 11-19, 2015.

150. Tatsumi, Y., Suzuki, T., Ozawa, H., Hirose, K., Hanyu, T., Ohishi, Y.,

Accumulation of 'anti-continent' at the base of the mantle and its recycling in mantle plumes,

Geochimica et Cosmochimica Acta, 143, 23-33, 2014.

149. Caracas, R., Ozawa, H., Hirose, K., Ishii, H., Hiraoka, N., Ohishi, Y., Hirao, N.,

Chemistry and Mineralogy of Earth's Mantle,

American Mineralogist, 99(7), 1270-1276, 2014.

148. Ohta, K., Yagi, T., Hirose, K.,

Thermal diffusivities of MgSiO3 and Al-bearing MgSiO3 perovskites,

American Mineralogist, 99(1), 94-97, 2014.

147. Umemoto, K., Hirose, K., Imada, S., Nakajima, Y., Komabayashi, T., Tsutsui, S., Baron, A. Q.,

Liquid iron-sulfur alloys at outer core conditions by first principles calculations,

Geophysical Research Letters, 41(19), 6712-6717, 2014.

146. Imada, S., Ohta, K., Yagi, T., Hirose, K., Yoshida, H., Nagahara, H.,

Measurements of lattice thermal conductivity of MgO to core mantle boundary pressures,

Geophysical Research Letters, 41(13), 4542-4547, 2014.

145. Tateno, S., Hirose, K., Ohishi, Y.,

Melting experiments on peridotite to lowermost mantle conditions,

Journal of Geophysical Research: Solid Earth, 119(6), 4684-4694, 2014.

144. Nomura, R., Hirose, K., Uesugi, K., Ohishi, Y., Tsuchiyama, A., Miyake, A., Ueno, Y.

Low core-mantle boundary temperature inferred from the solidus of pyrolite,

Science, 343(6170), 522-525, 2014.

143. Kato, C., Hirose, K., Komabayashi, T., Ozawa, H., Ohishi, Y.,

NAL phase in K-rich portions of the lower mantle,

Geophysical Research Letters, 40(19), 5085-5088, 2013.

142. Ozawa, H., Hirose, K., Suzuki, T., Ohishi, Y., Hirao, N.,

Decomposition of Fe3S above 250 GPa,

Geophysical Research Letters, 40(18), 4845-4849, 2013.

141. Asahara, Y., Hirose, K., Ohishi, Y., Hirao, N., Ozawa, H., Murakami, M.,

Acoustic velocity measurement for stishovite across the post-stishovite phase transition under deviatoric stress: implication to the seismic feature of subducting slabs in the mid-mantle,

American Mineralogist, 98, 11-12, 2013.

140. Gomi, H., Ohta, K., Hirose, K., Labrosse, S., Caracas, R.,Verstraete, M.J., Hernlund, J.,

The high conductivity of iron and thermal evolution of the Earth's core,

Physics of the Earth and Planetary Interiors, 224, 88-103, 2013.

139. Hirose, K., Labrosse, S., Hernlund, J.,

Composition and state of the core,

Annual Review of Earth and Planetary Sciences, in press.

138. Dai, L., Kudo, Y., Hirose, K., Murakami, M., Asahara, Y., Ozawa, H., Ohishi, Y., Hirao, N.,

Sound velocities of Na0.4Mg0.6Al1.6Si0.4O4 NAL and CF phases to 73 GPa determined by Brillouin scattering method,

Physics and Chemistry of Minerals, 40, 195-201, DOI 10.1007/s00269-012-0558-0, 2013.

137. Hirose, K.,

High-Pressure, High-Temperature X-ray Diffraction Measurements and the Discovery of Post-Perovskite Phase Transition,

Journal of the Physical Society of Japan, 82, 021010, doi: 10.7566/JPSJ.82.021010, 2013.

136. Noguchi, M., Komabayashi, T., Hirose, K., Ohishi, Y.,

High-temperature compression experiments of CaSiO3 perovskite to lowermost mantle conditions and its thermal equation of state,

Physics and Chemistry of Minerals, 40, 81-91, DOI 10.1007/s00269-012-0549-1, 2013.

135. Sinmyo, R., Hirose, K.,

Iron partitioning in pyrolitic lower mantle,

Physics and Chemistry of Minerals, 40, 107-113, DOI 10.1007/s00269-012-0551-7, 2013.

134. Sugimura, E., Komabayashi, T., Ohta, K., Hirose, K., Ohishi, Y.,

Dubrovinsky, L., Experimental evidence for superionic conduction in H2O ice,

Journal of Chemical Physics, 137, 194505, 2012.

133. Kato, J., Hirose, K., Ohishi, Y.,

High-pressure experiments on phase transition boundaries between corundum, Rh2O3(II) and CaIrO3-type structures in Al2O3,

American Mineralogist, in press.

132. Kudo, Y., Hirose, K., Murakami, M., Asahara, Y., Ozawa, H., Ohishi, Y., Hirao, N.,

Sound velocity measurements of CaSiO3 perovskite to 133 GPa and implications for lowermost mantle seismic anomalies,

Earth and Planetary Science Letters, 349/350, 1-7, 2012.

131. Ohta, K., Yagi, T., Taketoshi, N., Hirose, K., Komabayashi, T., Baba, T., Ohishi, Y., Hernlund, J.,

Lattice thermal conductivity of MgSiO3 perovskite and post-perovskite at the core-mantle boundary,

Earth and Planetary Science Letters, 349/350, 109-115, 2012.

130. Tateno, S., Hirose, K., Komabayashi, T., Ozawa, H., Ohishi, Y.,

The structure of Fe-Ni alloy in Earth's inner core,

Geophysical Research Letters, 39, L12305, doi:10.1029/2012GL052103, 2012.

129. Imada, S., Hirose, K., Komabayashi, T., Suzuki, T., Ohishi, Y.,

Compression of Na0.4Mg0.6Al1.6Si0.4O4 the NAL and Ca-ferrite type phases,

Physics and Chemistry of Minerals, DOI 10.1007/s00269-012-0508-x, 2012.

128. Murakami, M., Ohishi, Y., Hirao, N., Hirose, K.,

A perovskititic lower mantle inferred from high pressure and temperature sound velocity data,

Nature, 485, 90-94, doi:10.1038nature11004, 2012.

127. Komabayashi, T., Hirose, K., Ohishi, Y.,

In-situ X-ray diffraction measurements of the fcc-hcp phase transition boundary of an Fe-Ni alloy in an internally-heated diamond anvil cell,

Physics and Chemistry of Minerals, 39, 329-338, doi: 10.1007/s00269-012-0490-3, 2012.

126. Ohta, K., Cohen, R. E., Hirose, K., Haule, K., Shimizu, K., Ohishi, Y.,

Experimental and theoretical evidence for pressure-induced metallization in FeO with rocksalt-type structure,

Physical Review Letters, 108, 026403, 2012.

125. Yamanaka, T., Hirose, K., Mao, W. L., Meng, Y., Ganesh, P., Shulenburger, L., Shen, G., Hemley, R. J.,

Crystal structures of (Mg1-x,Fex)SiO3 post-perovskite at high pressures,

Proceedings of the National Academy of Sciences of USA, 109, 1035-1040, doi:10.1073/pnas.1118076108, 2012.

124. Ozawa, H., Takahashi, F., Hirose, K., Ohishi, Y., Hirao, N.,

Phase transition in FeO and stratification in Earth's outer core,

Science, 334, 792-794, 2011.

123. Ozawa, H., Hirose, K., Ishii, H., Hiraoka, N., Ohishi, Y., Seto, Y.,

Spin crossover, structural change, and metallization in FeO with NiAs-type structure,

Physical Review B, 84, 134417, 2011.

122. Kuwayama, Y., Hirose, K., Sata, N., Ohishi, Y.,

Pressure-induced structural evolution of pyrite-type SiO2,

Physics and Chemistry of Minerals, 38, 591-597, doi:10.1007/s00269-011-0431-6 (2011).

121. Imada, S., Hirose, K., Ohishi, Y.,

Stabilities of NAL and Ca-ferrite-type phases on the join NaAlSiO4-MgAl2O4 at high pressure,

Physics and Chemistry of Minerals, 38, 557-560, doi:10.1007/s00269-011-0427-2 (2011).

120. Nakajima, Y., Takahashi, E., Sata, N., Nishihara, Y., Hirose, K., Funakoshi, K., Ohishi, Y.,

Thermoelastic property and high-pressure stability of Fe7C3: Implication for iron-carbide in the Earth's core,

American Mineralogist, 96, 1158-1165 (2011).

119. Sinmyo, R., Hirose, K., Muto, S., Ohishi, Y., Yasuhara, A.,

The valence state and partitioning of iron in Earth's lowermost mantle,

Journal of Geophysical Research, 116, B07205, doi:10.1029/2010JB008179 (2011).

118. Nomura, R., Ozawa, H., Tateno, S., Hirose, K., Hernlund, J., Muto, S., Ishii, H., Hiraoka, N.,

Spin crossover and iron-rich silicate melt in the Earth's deep mantle,

Nature, 473, 199-202, doi:10.1038/nature09940 (2011).

117. Ohta, K., Hirose, K., Shimizu, K., Ohishi, Y.,

Experimental evidence for metal FeO with normal NiAs-type structure,

Physical Review B, 82, 174120 (2010).

116. 佐多永吉、廣瀬敬、松井正典、平尾直久、

レーザーアニール法を用いた体積測定に基づいた室温圧力スケールの比較、

高圧力の科学と技術、20巻(3)、240-243、2010.

115. Asahara, Y., Hirose, K., Ohishi, Y., Hirao, N.,

Thermoelastic properties of ice VII and its high-pressure polymorphs: Implications for dynamics of cold slab subduction in the lower mantle,

Earth and Planetary Science Letters, 299, 474-482 (2010).

114. Hirose, K., Nagaya, Y., Merkel, S., Ohishi, Y.,

Deformation of MnGeO3 post-perovskite at lower mantle pressure and temperature,

Geophysical Research Letters, 37, L20302, doi:10.1029/2010GL044977 (2010).

113. Sugimura, E., Komabayashi, T., Hirose, K., Sata, N., Ohishi, Y., Dubrovinsky, L. S.,

Simultaneous high-pressure and -temperature volume measurements of ice VII and its thermal equation of state,

Physical Review B, 82, 134103 (2010).

112. Yagi, T., Ohta, K., Kobayashi, K., Taketoshi, N., Hirose, K., Baba, T.,

Thermal diffusivity measurement in diamond anvil cell using light pulse thermoreflectance technique,

Measurement Science and Technology, 22, 024011 (2011).

111. Tateno, S., Hirose, K., Ohishi, Y., Tatsumi, Y.,

The structure of iron in Earth's inner core,

Science, 330, 359-361 (2010).

110. Nomura, R., Hirose, K., Sata, N., Ohishi, Y.,

Precise determination of post-stishovite phase transition boundary and implications for seismic heterogeneities in the mid-lower mantle,

Physics of the Earth and Planetary Interiors, 183, 104-109 (2010).

109. Komabayashi, T., Hirose, K., Sugimura, E., Sata, N., Ohishi, Y.,

High-temperature compression of ferropericlase and the effect of temperature on iron spin transition,

Earth and Planetary Science Letters, 297, 691-699 (2010).

108. Hirose, K.,

The Earth's missing ingredient,

Scientific American, June issue, 32-37, 2010.

107. Sata, N., Hirose, K., Shen, G., Ohishi, Y., Hirao, N.,

Compression of FeSi, Fe3C, Fe0.95O, and FeS under the core pressures and implication for light element in the Earth's core,

Journal of Geophysical Research, 115, B09204, doi:10.1029/2009JB006975 (2010).

106. Tateno, S., Hirose, K., Sata, N., Ohishi, Y.,

Structural distortion of CaSnO3 perovskite under pressure and the quenchable post-perovskite phase as a low-pressure analogue to MgSiO3,

Physics of the Earth and Planetary Interiors, 181, 54-59 (2010).

105. Hirose, K.,

Deep mantle properties,

Science, 327, 151-152, 2010.

104. Ohta, K., Hirose, K., Shimizu, K.,

The electrical resistance measurements of (Mg,Fe)SiO3 perovskite and implications for iron spin transition,

Physics of the Earth and Planetary Interiors, 180, 154-158, 2010.

103. Ohta, K., Hirose, K., Shimizu, K., Sata, N., Ohishi, Y.,

Electrical conductivities of pyrolitic mantle and MORB materials up to the lowermost mantle conditions,

Earth and Planetary Science Letters, 289, 497-502, 2010.

102. Asahara, Y., Murakami, M., Ohishi, Y., Hirao, N., Hirose, K.,

Sound velocity measurement in liquid water up to 25 GPa and 900 K: Implications for densities of water at lower mantle conditions,

Earth and Planetary Science Letters, 289, 479-485, 2010.

101. Sinmyo, R., Hirose, K.,

The Soret effect in laser-heated diamond-anvil cell,

Physics of the Earth and Planetary Interiors, 180, 172-178, 2010.

100. Ozawa, H., Hirose, K., Tateno, S., Sata, N., Ohishi, Y.,

Phase transition boundary between B1 and B8 structures of FeO up to 210 GPa,

Physics of the Earth and Planetary Interiors, 179, 157-163, 2010.

99. Yamamoto, S., Komiya, T., Hirose, K., Maruyama, S.,

Coesite and clinopyroxene exsolution lamellae in chromites: In-situ ultrahigh-pressure evidence from podiform chromitites in the Luobusa ophiolite, southern Tibet,

Lithos, 109, 314-322, 2009.

98. Kuwayama, Y., Sawai, T., Hirose, K., Sata, N., Ohishi, Y.,

Phase relations of iron-silicon alloys at high pressure and high temperature,

Physics and Chemistry of Minerals, 36, 511-518, DOI 10.1007/s00269-009-0296-0, 2009.

97. 廣瀬敬、

高圧実験とマントルの相転移、

地震、61巻特集号、S273-S283、2009。

96. Ozawa, H., Hirose, K., Mitome, M., Bando, Y., Sata, N., Ohishi, Y.,

Experimental study of reaction between perovskite and molten iron to 146 GPa and implications for chemical equilibrium at the core-mantle boundary,

Physics and Chemistry of Minerals, 36, 355-363, 2009.

95. Fukao, Y., Obayashi, M., Nakakuki, T., and the Deep Slab Project Group (Utada, H., Suetsugu, D., Irifune, T., Ohtani, E., Yoshioka, S., Shiobara, H., Kanazawa, T., and Hirose, K.), Stagnant slab: A review,

Annual Review of the Earth and Planetary Science, 37, 19-46, 2009.

94. Tateno, S., Sinmyo, R., Hirose, K., Nishioka, H.,

The advanced ion-milling method for preparation of thin film using Ion Slicer: Application to a sample recovered from diamond-anvil cell,

Review of Scientific Instruments, 80, 013901, 2009.

93. Tateno, S., Hirose, K., Sata, N., Ohishi, Y.,

Determination of post-perovskite phase transition boundary in MgSiO3 up to 4400 K and implications for thermal structure at the base of the mantle,

Earth and Planetary Science Letters, 277, 130-136, 2009.

92. Murakami, M., Ohishi, Y. Hirao, N., Hirose, K.,

Elasticity of MgO to 130 GPa: Implications for lower mantle mineralogy,

Earth and Planetary Science Letters, 277, 123-129, 2009.

91. Sinmyo, R., Hirose, K., Nishio-Hamane, D., Seto, Y., Fujino, K., Sata, N., Ohishi, Y.,

Partitioning of iron between perovskite/post-perovskite and ferropericlase in the lower mantle,

Journal of Geophysical Research, 113, B11204, doi:10.1029/2008JB005730, 2008.

90. Murakami, M., Asahara, Y., Ohishi, Y., Hirao, N., Hirose, K.,

Development of in-situ Brillouin spectroscopy at high pressure and temperature with synchrotron radiation and infrared laser heating system: Application to the Earth's deep interior,

Physics of the Earth and Planetary Interiors, 174, 282-291, 2009.

89. 太田健二、廣瀬敬、新名良介、小野田朱々江、清水克哉、

レーザー加熱式ダイヤモンドセルを用いた(Mg,Fe)SiO3ポストペロフスカイト相の電気伝導度測定、

高圧力の科学と技術、18巻(3)、260-266、2008.

88. Kuwayama, Y., Hirose, K., Sata, N., Ohishi, Y.,

Phase relations of iron and iron-nickel alloys up to 300 GPa; Implications for the composition and the structure of the Earth's inner core,

Earth and Planetary Science Letters, 273, 379-385, 2008.

87. Ohishi, Y., Hirao, N., Sata, N., Hirose, K., Takata, M.,

Highly intense monochromatic X-ray diffraction facility for high-pressure research at SPring-8,

High Pressure Research, 28, 163-173, 2008.

86. Sinmyo, R., Ozawa, H., Hirose, K., Yasuhara, A., Endo, N.,

Ferric iron content in (Mg,Fe)SiO3 perovskite and post-perovskite in the deep lower mantle conditions,

American Mineralogist, 93, 1899-1902, 2008.

85. Hirose, K., Takafuji, N., Fujino, K., Shieh, S. R., Duffy, T. S.,

Iron partitioning between perovskite and post-perovskite: A transmission electron microscope study,

American Mineralogist, 93, 1678-1681, 2008.

84. Sugimura, E., Iitaka, T., Hirose, K., Kawamura, K., Sata, N., Ohishi, Y.,

The compression of H2O ice to 126 GPa and implications for hydrogen-bond symmetrization: Synchrotron x-ray diffraction measurements and density-functional calculations,

Physical Review B, 77, 214103, 2008.

83. Wu, Z., R. Wentzcovitch, K. Umemoto, Li, B., Hirose, K., Zheng, J,

PVT relations in MgO: an ultra-high P-T scale for planetary science applications,

Journal Geophysical Research, 113, B06204, doi:10.1029/2007JB005275, 2008.

82. Hirose, K., Sata, N., Komabayashi, T., Ohishi, Y.,

Simultaneous volume measurements of Au and MgO to 140 GPa and thermal equation of state of Au based on MgO pressure scale,

Physics of the Earth and Planetary Interiors, 167, 149-154, 2008.

81. Hirose, K., Lay, T.,

Discovery of post-perovskite phase transition and new views on the core-mantle boundary region,

Elements, 4, 183-189, 2008.

80. Ohta, K., Onoda, S., Hirose, K., Sinmyo, R., Shimizu, K., Sata, N., Ohishi, Y., Yasuhara, A.,

The electrical conductivity of post-perovskite in Earth's D" layer,

Science, 320, 89-91, 2008.

79. Ozawa, H., Hirose, K., Mitome, M., Bando, Y., Sata, N., Ohishi, Y.,

Chemical equilibrium between ferropericlase and molten iron to 134 GPa and implications for iron content at the bottom of the mantle,

Geophysical Research Letters, 35, L05308, doi:10.1029/2007GL032648, 2008.

78. Ishibashi, K., Hirose, K., Sata, N., Ohishi, Y.,

Dissociation of CAS phase in the uppermost lower mantle,

Physics and Chemistry of Minerals, 35, 197-200, 2008.

77. Ohta, K., Hirose, K., Lay, T., Sata, N., Ohishi, Y.,

Phase transitions in pyrolite and MORB at lowermost mantle conditions: Implications for a MORB-rich pile above the core-mantle boundary,

Earth and Planetary Science Letters, 267, 107-117, 2008.

76. Sata, N., Ohfuji, H., Hirose, K., Kobayashi, H., Ohishi, Y., Hirao, N.,

New high-pressure B2 phase of FeS above 180 GPa,

American Mineralogist, 93, 492-494, 2008.

75. Komabayashi, T., Hirose, K., Sugimura, E. Sata, N., Ohishi, Y, Dubrovinsky, L.,

Simultaneous volume measurements of perovskite and post-perovskite in MgSiO3 and their thermal equations of state,

Earth and Planetary Science Letters, 265, 515-524, 2008.

74. Hirose, K.,

Discovery of post-perovskite phase transition and the nature of D" layer, in Post-perovskite:

The Last Mantle Phase Transition, edited by K. Hirose, J. Brodholt, T. Lay and D. Yuen, AGU monograph, Ser. 174, 19-35, 2007.

73. Komabayashi, T., Hirose, K., Sata, N., Ohishi, Y, Dubrovinsky, L.,

Phase transition of CaSiO3 perovskite,

Earth and Planetary Science Letters, 260, 564-569, 2007.

72. Murakami, M., Sinogeikin, S., Bass, J., Sata, N., Ohishi, Y., Hirose, K.,

Sound velocity of MgSiO3 post-perovskite phase: A constraint on the D" discontinuity,

Earth and Planetary Science Letters, 259, 18-23, 2007.

71. Ohta, K., Hirose, K., Onoda, S., Shimizu, K.,

The effect of iron spin transition on electrical conductivity of (Mg,Fe)O magnesiow?stite,

Proceedings of the Japan Academy, Ser. B., 83, 97-100, 2007.

70. Ohfuji, H., Sata, N., Kobayashi, H., Ohishi, Y., Hirose, K., Irifune, T.,

A new high-pressure and high-temperature polymorph of FeS,

Physics and Chemistry of Minerals, 10.1007/s00269-007-0151-0, 2007.

69. Tateno, S., Hirose, K., Sata, N., Ohishi, Y.,

High solubility of FeO in perovskite and the post-perovskite phase transition,

Physics of the Earth and Planetary Interiors, 160, 319-325, 2007.

68. Hirose, K.,

Post-perovskite phase transition and the nature of D" layer, Superplumes:

Beyond Plate Tectonics, edited by D. A. Yuen, S. Maruyama, S. Karato, and B. F. Windley, Springer, pp. 69-82, 2007.

67. 廣瀬敬、

ついに見えてきた地球コア直上の世界、

日経サイエンス、1月号、42-49、2007.

66. Hirose, K., Kawamura, K.,

Discovery of post-perovskite phase transition and implications for the nature of D" layer of the mantle,

Advances in High-Pressure Mineralogy, edited by E. Ohtani, GSA Memoir Special paper, 421, 37-46, 2007.

65. Hirose, K.,

Postperovskite phase transition and its geophysical implications,

Reviews of Geophysics, 44, RG3001, doi:101029/2005RG000186, 2006.

64. Sinmyo, R., Hirose, K., O'Neill, H.St.C., Okunishi, E.,

Ferric iron in Al-bearing post-perovskite,

Geophysical Research Letters, 33, L12S13, doi:10.1029/2006GL025858, 2006.

63. 廣瀬敬、

超高圧実験で探る地球深部、

日本地球惑星科学連合ニュースレター(JGL)、8月号、3-5、2006.

62. 廣瀬敬、

急速に理解の進むマントル最深部、

科学、5月号、455-456、6-7、2006.

61. 廣瀬敬、

超高圧実験で探るマントル最深部、

日本地震学会広報紙ないふる、1月号、2006.

60. Hirose, K., Karato, S., Cormier, V., Brodholt, J., Yuen, D.,

Unsolved problems in the lowermost mantle,

Geophysical Research Letters, 33, L12S01, doi:10.1029/2006GL025691, 2006.

59. Shieh, S., Duffy, T., Kubo, A., Shen, G., Prakapenka, V., Sata, N., Hirose, K., Ohishi, Y.,

Equation of state of the post-perovskite phase synthesized from a natural (Mg,Fe)SiO3 orthopyroxene,

Proceedings of the National Academy of Sciences of USA, 103, 3039-3043, 2006.

58. Hirose, K., Sinmyo, R., Sata, N., Ohishi, Y.,

Determination of post-perovskite phase transition boundary in MgSiO3 using Au and MgO internal pressure standards,

Geophysical Research Letters, 33, L01310, doi:10.1029/2005GL024468, 2006.

57. Tateno, S., Hirose, K., Sata, N., Ohishi, Y.,

High-pressure behavior of MnGeO3 and CdGeO3 and the post-perovskite phase transition,

Physics and Chemistry of Minerals, 32, 721-725, 2006.

56. 廣瀬敬、

マントル最深部の新鉱物の発見、

科学、８月号、1024-1028、2005.

55. 廣瀬敬、

地球惑星内部物質の放射光結晶学、

日本結晶学会誌、47巻(4)、247-252、2005.

54. Kuwayama, Y., Hirose, K., Sata, N., Ohishi, Y.,

The pyrite-type high-pressure form of silica,

Science, 309, 923-925, 2005.

53. Tateno, S., Hirose, K., Sata, N., Ohishi, Y.,

Phase relations in Mg3Al2Si3O12 to 180 GPa: Effect of Al on post-perovskite phase transition,

Geophysical Research Letters, 32, L15306, doi:10.1029/2005GL023309, 2005.

52. Hirose, K., Takafuji, N., Sata, N., Ohishi, Y.,

Phase transition and density of subducted MORB crust in the lower mantle,

Earth and Planetary Science Letters, 237, 239-251, 2005.

51. Komabayashi, T., Hirose, K., Funakoshi, K.,

In-situ X-ray measurements on the phase relation of antigorite (serpentine): implications for water transportation by slab peridotite into the deep interior,

Physics of the Earth and Planetary Interiors, 151, 276-289, 2005.

50. Hirose, K., Y. Fujita,

Clapeyron slope of the post-perovskite phase transition boundary in CaIrO3,

Geophysical Research Letters, 32, L13313, doi:10.1029/2005GL023219, 2005.

49. Takafuji, N., Hirose, K., Mitome, M., Bando, Y.,

Solubilities of O and Si in liquid iron in equilibrium with (Mg,Fe)SiO3 perovskite and the light elements in the core,

Geophysical Research Letters, 32, L06313, doi:10.1029/2005GL022773, 2005.

48. Murakami, M., Hirose, K., Sata, N., Ohishi, Y.,

Post-perovskite phase transition and crystal chemistry in the pyrolitic lowermost mantle,

Geophysical Research Letters, 32, L03304, doi:10.1029/2004GL021956, 2005.

47. 廣瀬敬・河村雄行、

MgSiO3のポストペロブスカイト相の発見、

固体物理、40巻(2)、51-59、2005

46. 廣瀬敬、

マントル最下層の新鉱物、

パリティ、20巻(1)、56-57、2005

45. Hirose, K., Kawamura, K., Tateno, S., Sata, N., Ohishi, Y.,

Stability and equation of state of MgGeO3 post-perovskite phase,

American Mienralogist, 90, 262-265, 2005.

44. 廣瀬敬、

マントル最下層物質の結晶構造の発見、

パリティ、19巻(12)、58-61、2004

43. 廣瀬敬・河村雄行、

MgSiO3のポストペロブスカイト相転移の発見と地球の最下部マントル、

高圧力の科学と技術、14巻、265-274、2004

42. Takafuji, N., Hirose, K., Ono, S., Xu, F., Mitome, M., Bando, Y.,

Segregation of core melts by permeable flow in the lower mantle,

Earth and Planetary Science Letters, 224, 249-257, 2004.

41. Iitaka, T., Hirose, K., Kawamura, K., Murakami, M.,

The elasticity of MgSiO3 post-perovskite phase at the Earth's lowermost mantle,

Nature, 430, 442-445, 2004.

40. Fei, Y., Li, J., Hirose, K., Minarik, W., Van Orman, J., Sanloup, C., van Westrenen, W., Komabayashi, T., Funakoshi, K.,

A critical evaluation of pressure scales at high temperatures by in-situ X-ray diffraction measurements,

Physics of the Earth and Planetary Interiors, 143-144, 515-526, 2004.

39. Murakami, M., Hirose, K., Ono, S., Isshiki, M., Watanuki, T.,

High pressure and high temperature phase transitions of FeO,

Physics of the Earth and Planetary Interiors, 146, 273-282, 2004.

38. Hirose, K., Shimizu, N., van Westrenen, W., Fei, Y.,

Trace element partitioning in Earth's lower mantle and implications for the geochemical consequences of partial melting at the core-mantle boundary,

Physics of the Earth and Planetary Interiors, 146, 249-260, 2004.

37. Kurashina, T., Hirose, K., Ono, S., Sata, N., Ohishi, Y.,

Phase transition in Al-bearing CaSiO3-rich perovskite: implications for seismic discontinuities in the lower mantle,

Physics of the Earth and Planetary Interiors, 145, 67-74, 2004.

36. Miyazaki, A., Hiyagon, H., Sugiura, N., Hirose, K., Takahashi, E.,

Solubilities of nitrogen and noble gases in silicate melts under various oxygen fugacities: implications for the origin and degassing history of nitrogen and noble gases in the Earth,

Geochimica Cosmochimica et Acta, 68, 387-401, 2004.

35. Murakami, M., Hirose, K., Kawamura, K., Sata, N., Ohishi, Y.,

Post-perovskite phase transition in MgSiO3,

Science, 304, 855-858, 2004.

34. Fei, Y., Van Orman, J., Li, J., van Westrenen, W., Sanloup, C., Minarik, W., Hirose, K., Komabayashi, T., Walter, M., Funakoshi, K.,

In situ X-ray diffraction measurements of the post-spinel transition boundary in Mg2SiO4 by multiple internal pressure standards,

Journal of Geophysical Research, 109, doi:10.1029/2003JB002562, 2004.

33. Isshiki, M., Irifune, T., Hirose, K., Ono, S., Ohishi, Y., Watanuki, T., Nishibori, E., Sakata, M.,

Stability of magnesite and its new high-pressure form in the lower mantle,

Nature, 427, 60-62, 2004.

32. Katayama, I., Hirose, K., Yurimoto, H., Nakashima, S.,

Water solubility in majoritic garnet in MORB composition at the mantle transition zone,

Geophysical Research Letters, 30, doi:10.1029/2003GL018127, 2003.

31. Ono, S., Tsuchiya, T., Hirose, K., Ohishi, Y.,

Phase transition between the CaCl2-type and a-PbO2-type structures of germanium dioxide,

Physical Reviews B, 68, 134108, 2003.

30. Kuwayama, Y., Hirose, K.,

Phase relations in the system Fe-FeSi at 21 GPa,

American Mineralogist, 89, 273-276, 2004.

29. Ono, S., Tsuchiya, T., Hirose, K., Ohishi, Y.,

New high-pressure form of pyrite-type germanium dioxide,

Physical Reviews B, 68, 014103, 2003

28. Murakami, M., Hirose, K., Ono, S., Ohishi, Y.,

Stability of CaCl2-type and a-PbO2-type SiO2 determined by in situ X-ray observations,

Geophysical Research Letters, 30, 1207, 10.1029/2002GL016722, 2003.

27. Ono, S., Hirose, K., Isshiki, M., Mibe, K., Saito, Y.,

Equation of state of hexagonal aluminous phase of natural composition to 63 GPa at 300K,

Physics and Chemistry of Minerals, 29, 527-531, 2002.

26. Ono, S., Hirose, K., Kikegawa, T., Saito, Y.,

The compressibility of a natural composition calcium ferrite-type aluminous phase to 70 GPa,

Physics of the Earth and Planetary Interiors, 131, 311-318, 2002.

25. Ono, S., Suto, T., Hirose, K., Kuwayama, Y., Komabayashi, T. & Kikegawa, T.,

Equation of state of Al-bearing stishovite to 40 GPa at 300K,

American Mineralogist, 87, 1486-1489, 2002.

24. Hirose, K., Fei, Y.,

Subsolidus and melting phase relations of basaltic composition in the uppermost lower mantle,

Geochimica Cosmochimica et Acta, 66, 2099-2108, 2002.

23. Hirose, K.,

Phase transitions in pyrolitic mantle around 670-km depth: implications for upwelling of plumes from the lower mantle,

Journal of Geophysical Research, 107, 10.1029/2001JB000597, 2002.

22. Ono, S., Hirose, K., Murakami, M., Isshiki, M.,

Post-stishovite phase boundary in SiO2 determined by in situ X-ray determination,

Earth and Planetary Science Letters, 197, 187-192, 2002.

21. Murakami, M., Hirose, K., Yurimoto, H., Nakashima, S., Takafuji, N.,

Water in Earth's lower mantle,

Science, 295, 1885-1887, 2002.

20. Ono, S., Hirose, K., Nishiyama N., Isshiki, M.,

Phase boundary between rutile-type and CaCl2-type germanium dioxide determined by in situ X-ray observations,

American Mineralogist, 87, 99-102, 2002.

19. Li, J., Fei, Y., Mao, H., Hirose, K., Shieh, S.,

Sulfur in the Earth's inner core,

Earth and Planetary Science Letters, 193, 509-514, 2001.

18. Hirose, K., Komabayashi, T., Murakami, M., Funakoshi, K.,

In situ measurements of the majorite-akimotoite-perovskite phase transition boundaries in MgSiO3,

Geophysical Research Letters, 28, 4351-4354, 2001.

17. Shimizu, K., Komiya, T., Hirose, K., Shimizu, N., Maruyama, S.,

Cr-spinel, an excellent micro-container for retaining primitive melts - implications for a hydrous plume origin for komatiites,

Earth and Planetary Science Letters, 189, 177-188, 2001.

16. Miyajima, N., Yagi, T., Hirose, K., Kondo, T., Fujino, K., Miura, H.,

Potential host phase of aluminum and potassium in the Earth's lower mantle,

American Mineralogist, 86, 740-746, 2001.

15. Hirose, K., Fei, Y., Ono, S., Yagi, T., Funakoshi, K.,

In situ measurements of the phase transition boundary in Mg3Al2Si3O12: implicationts for the nature of the seismic discontinuities in the Earth's mantle,

Earth and Planetary Science Letters, 184, 567-573, 2001.

14. Hirose, K., Fei, Y., Ma, Y., Mao, H.,

The fate of subducted basaltic crust in the Earth's lower mantle,

Nature, 397, 53-56, 1999.

13. Kogiso, T., Hirose, K.,., Takahashi, T.,

Melting experiments on homogeneous mixtures of peridotite and basalt: Application to the genesis of ocean island basalts,

Earth and Planetary Science Letters, 162, 45-61, 1998.

12. Hirose, K., Kushiro, I.,

The effect of melt segregation on polybaric mantle melting: estimation from the incremental melting experiments,

Physics of the Earth and Planetary Interiors, 107, 111-118, 1998.

11. Hirose, K.,

Partial melt compositions of carbonated peridotite at 3 GPa and genesis of alkali basalt magmas,

Geophysical Research Letters, 24, 2837-2840, 1997.

10. Peate, D., Pearce, J., Hawkesworth, C., Colley, H., Edwards, C., Hirose, K.,

Geochemical variations in Vanuatu arc lavas: the role of subducted material and a variable mantle wedge composition,

Journal of Petrology, 38, 1331-1358, 1997.

9. 廣瀬・久城、

マントルの融解とマグマの成因、

科学、３月号，194-202、1997.

8. Hirose, K.,

Melting experiments on lherzolite KLB-1 under hydrous conditions and generation of high-magnesian andesitic melts,

Geology, 25, 42-44, 1997.

7. Hirose, K., Kawamoto, T.,

Hydrous partial melting of lherzolite at 1GPa: the effect of H2O on the genesis of basaltic magmas,

Earth and Planetary Science Letters, 133, 463-473, 1995.

6. Kawamoto, T., Hirose, K.,

Au-Pd sample containers for melting experiments on iron and H2O bearing systems,

European Journal of Mineralogy, 6, 381-385, 1994.

5. Hirose, K., Kawamura, K.,

A new experimental approach for incremental batch melting of peridotite at 1.5 GPa,

Geophysical Research Letters, 21, 2139-214, 1994.

4. Nohara, M., Hirose, K., Eissen, J., Urabe, T., Joshima, M.,

The North Fiji Basin basalts and their magma sources; Part II Sr-Nd isotopic and trace element constraints,

Marine Geology, 116, 179-195, 1994.

3. Eissen, J., Nohara, M., Cotton, T., Hirose, K.,

North Fiji Basin basalts and their magma sources; Part I incompatible element constraints,

Marine Geology, 116, 153-178, 1994.

2. Hirose, K., Kushiro, I.,

Partial melting of dry peridotites at high pressures; determination of compositions of melts segregated from peridotite using aggregates of diamond,

Earth and Planetary Science Letters, 114, 477-489, 1993.

1. Kushiro, I., Hirose, K.,

Experimental determination of composition of melt formed by equilibrium partial melting of peridotite at high pressures using aggregates of diamond grains,

Proceedings of the Japan Academy, 68, 63-68, 1992.

Access

Department of Earth and Planetary Sciences, Tokyo Institute of Technology

2-12-1 Ookayama, Meguro-ku,Tokyo 152-8551 Japan

Voice: +81-3-5734-2618 Fax: +81-3-5734-3538

From Downtown Tokyo

1. Take Keihin-Tohoku Line (Japan Railways) to Ooimachi Station. Transfer to Ooimachi Line (Tokyu Transportation Systems) there and get off at O-okayama Station. The train ride from Ooimachi Station to O-okayama Station is about 10 minutes.

2. Take Yamanote Line (Japan Railways) to Meguro Station. Transfer to Meguro Line (Tokyu Transportation Systems) there and get off at O-okayama Station. The ride from Meguro Station to O-okayama Station takes about 10 minutes.

From Narita Airport (international flights)

1. by KEISEI Line; Take a Narita skyliner to Nippori Station and transfer to JR Keihin-Tohoku Line. Take a train bound for south from Nippori to Ooimachi. At Ooimachi, transfer to Tokyu Ooimachi Line and get off at O-okayama.

2. by JR; Take a Narita express to Shinagawa Station. Change to a Keihin-Tohoku train bound for south and get off at Ooimachi Station (next to Shinagawa). Transfer to Tokyu Ooimachi Line.

From Haneda Airport (domestic flights)

by TOKYO MONORAIL; The monorail trains run between Haneda Airport and Hamamatsucho Station. From Hamamatsucho, take JR Keihin-Tohoku Line to Ooimachi. Transfer to Tokyu Ooimachi Line. CAUTION: In Keihin-Tohoku Line, express trains that DO NOT stop at Hamamatsucho Station run from 10:00 to 15:00. During that time, you are advised to take Yamanote Line from Hamamatsucho to Tamachi Station and from Tamachi to Ooimachi, Keihin-Tohoku Line.