Prof. Baosheng Li [Stony Brook University, USA]

Title: Mineral Elasticity: A Geophysical Probe of the Earth’s Deep Interior

Time: 10:30 - 11:30 AM, Tuesday,June 20, 2017

Place: Conference Room C206, HPSTAR (Beijing)

Host: Prof.Jiuhua Chen

Abstract

Elastic properties of Earth minerals under high pressure and high temperature conditions are of critical importance in understanding and interpreting the seismic velocity-depth profile as well as its late ralvariations to derive information about the structure, composition, heterogeneity, as well as the dynamics of the Earth’s interior. With the development and advancement of the technology of ultrasonic interferometry in high pressure apparatus, sound wave velocity measurements have been increased to conditions up to the top of the Earth’s lower mantle. The state-of-the-art ultrasonic experiments performed in conjunction with synchrotron X-radiation not only provide simultaneous determination of the elastic bulk and shear moduli atrealistic mantle conditions with direct determination of pressure (“absolute pressure”), but also allow for the evaluation and establishment of pressure scales. Over the last two decade, major mantle minerals, such as olivine and pyroxene (as well as their high pressure polymorphs), have all been assessed atrelevant mantle pressure and temperature conditions, and revealed some unexpected structural and elastic anomalies. Recently, these techniques have been applied to the study of synthetic mantle rock samples to constrain on the mantle composition and temperature of the southwestern United States. In this presentation, I will present an overview of the current status of the elasticity of major mantle minerals and their implications for our current understanding about the composition and dynamics of the Earth's mantle.

Biography of the Speaker:

Education & Training

1996 Ph.D in Geophysics/Mineral Physics (SUNY at Stony Brook)

1993 M.Sc in Geophysics/Mineral Physics (SUNY at Stony Brook)

1989 Certificate, UNESCO Training Course in Earthquake Seismology (GFZ,Germany)

1986 B.Sc. Geophysics (Univ. of Science and Technology of China, Hefei, Anhui,China)

Employment
2008-present Research Professor, Mineral Physics Institute, SUNY at Stony Brook
2004-present Adjunct Faculty, Department of Geosciences, SUNY at Stony Brook
2004-2008 Research Associate Professor, Mineral Physics Institute, SUNY at Stony Brook
7-8/2006 Visiting Scientist, Geodynamics Research Center, Ehime University, Japan
1998-2004 Research Assistant Professor, Mineral Physics Institute, SUNY Stony Brook
1996-1998 Postdoctoral Research Associate, Center for High Pressure Research,SUNY Stony Brook
1986-1990 Researcher, Inst. of Earthquake Sciences, China Earthquake Administration, Beijing, P. R. China

Synergistic Activities/Community Services
-Executive Committee Member of COMPRES (2016-2019)

-Guest Editor, Physics of Earth and Planetary Interior (2014)

-Director of High Pressure Lab, Mineral Physics Institute, SUNY Stony Brook(2007- present)

-Guest Professor, Geodynamics Research Center, Ehime University, Japan(2009-present)

-Guest Professor, College of Earth and Space Sciences, Peking University, China(2012-present)

-Advisory Committee Member, High Pressure Geoscience Conference of China (2010)

-Advisory Board Member, Global COE, GRC, Ehime University, Japan (2009-2014)

-Advisory Committee Member, High Pressure Laboratory of Peking University,China (2009-)

-Referee for proposals to NSF Geophysics, I&F, Geochemistry&Petrology,USA

-Referee for proposals to Deutsche Forschungs gemeinschaft (DFG), Germany

-Referee for proposals to ETH Switzerland

-Referee for proposals to Korean National Science Foundation, South Korea

-Referee for proposals to NERC (Research Council, UK)

-Convener/Session Chair, Mineral and Rock Physics/VGP, AGU/WPGU (2001-2014)

-Convener/Session Chair, AOGS Meeting 2009-2014

-Judge for Outstanding Student Presentation, Mineral and Rock Physics, AGU

-Special Interest Representative for High Pressure Research, National Synchrotron Light Source Users’ Committee, Brookhaven National Lab (2007).

-Referee for more than 15 professional journals (Nature Comm., EPSL, GRL, APL,PEPI, JGR, HPR,Sci. China, J. of Thermody., JMBMM, PCM, Am Min., J. Phys., J Acoust. Soc Am.,AGU-Mono, etc..)

-Ph.D Thesis Committee: Stony Brook University (Dept. of Geosciences), Stony Brook University (Dept.of Bioengineering), Princeton University (Dept. of Geosciences), Peking Univ.(Dept. of Geochemistry, China)

Society Memberships
American Geophysical Union (1992- present)

Asia Oceania Geoscience Society (2010- present)

International Professionals for the Advancement of Chinese Earth Science(IPACES) (2012- )