原位的高溫高壓下礦物巖石電導(dǎo)率和彈性波速為地球科學(xué)家探索地球與行星內(nèi)部物質(zhì)組成、結(jié)構(gòu)構(gòu)造、溫度分布、部分熔融、水含量、氧化還原狀態(tài)、點(diǎn)缺陷化學(xué)、化學(xué)元素遷移、電子自旋態(tài)轉(zhuǎn)變等提供極為重要的信息。 

　　多年以來(lái)，中國(guó)科學(xué)院地球化學(xué)研究所地球內(nèi)部物質(zhì)高溫高壓實(shí)驗(yàn)室李和平研究員課題組一直致力于該方面的研究工作，并取得了重要進(jìn)展。在李和平研究員指導(dǎo)下，該課題組研究人員代立東、胡海英等以地殼和上地幔典型的礦物巖石：富含鐵鋁榴石 (Alm82Py15Grs3)、單晶San Carlos橄欖石及花崗巖，及下地幔礦物：鈣鐵酸鹽相(Na0.4Mg0.6Al1.6Si0.4O4 的NAL和CF)為例，在該實(shí)驗(yàn)室、美國(guó)耶魯大學(xué)地質(zhì)與地球物理系及日本東京工業(yè)大學(xué)地球與行星科學(xué)學(xué)院，采用多面頂大壓力機(jī)和金剛石壓腔高溫高壓設(shè)備，結(jié)合世界最大同步光源國(guó)家實(shí)驗(yàn)室的日本SPring-8和雙面CO2鐳射激光加熱條件下，對(duì)電導(dǎo)率和布里淵散射彈性波速進(jìn)行原位測(cè)量，發(fā)現(xiàn)壓力、氧分壓、相轉(zhuǎn)變對(duì)礦物物理學(xué)性質(zhì)有重要影響，該成果可為地球深部物質(zhì)的電導(dǎo)率-深度和彈性波-深度等剖面的建立提供重要的實(shí)驗(yàn)結(jié)果和科學(xué)依據(jù)。 

　　該工作得到了中國(guó)科學(xué)院地球化學(xué)研究所“135”項(xiàng)目、中國(guó)科學(xué)院A類百人計(jì)劃項(xiàng)目、中國(guó)國(guó)家自然科學(xué)基金資助，部分成果得到了日本學(xué)術(shù)振興會(huì)外國(guó)研究員基金、美國(guó)自然科學(xué)基金等項(xiàng)目資助。相關(guān)成果依次發(fā)表在： 

　　[1] Dai Lidong, Hu Haiying, Li Heping*, Jiang Jianjun and Hui Keshi. Influence of temperature, pressure, and chemical composition on the electrical conductivity of granite. American Mineralogist, 2014, in press, doi: http://dx.doi.org /10.2138/am.2014.4692. 

　　[2] Hu Haiying, Dai Lidong, Li Heping*, Jiang Jianjun and Hui Keshi. Electrical conductivity of K-feldspar at high temperature and high pressure. Mineralogy and Petrology, 2014, in press, doi:10.1007/s00710-014-0325-7. 

　　[3] Dai Lidong and Karato Shun-ichiro*. The effect of pressure on the electrical conductivity of olivine under the hydrogen-rich conditions. Physics of the Earth and Planetary Interiors, 2014, 232: 51-56. 

　　[4] Dai Lidong and Karato Shun-ichiro*. Influence of oxygen fugacity on the electrical conductivity of olivine: Implications for the mechanism of conduction. Physics of the Earth and Planetary Interiors, 2014, 232: 57-60. 

　　[5] Dai Lidong*, Kudo Y, Hirose K, Murakami M, Asahara Y, Ozawa H, Ohishi Y and Hirao N. Sound velocities of Na0.4Mg0.6Al1.6Si0.4O4 NAL and CF phases 73 GPa determined by Brillouin scattering method. Physics and Chemistry of Minerals, 2013, 40: 195-201. 

　　[6] Dai Lidong, Li Heping*, Hu Haiying, Jiang Jianjun, Hui Keshi and Shan Shuangming. Electrical conductivity of Alm82Py15Grs3 almandine-rich garnet determined by impedance spectroscopy at high temperatures and high pressures. Tectonophysics, 2013, 608: 1086-1093. 

　　[7] Hu Haiying, Li Heping*, Dai Lidong, Shan Shuangming and Zhu Chengming. Electrical conductivity of alkali feldspar solid solutions at high temperatures and high pressures. Physics and Chemistry of Minerals, 2013, 40: 51-62.