Project

Back to overview

Elastic Properties of Hydrous Phases in the deep Mantle: A High-Pressure Ultrasonic Interferometer Study

English title Elastic Properties of Hydrous Phases in the deep Mantle: A High-Pressure Ultrasonic Interferometer Study
Applicant Phan Thien-Huong
Number 118621
Funding scheme Marie Heim-Voegtlin grants
Research institution Institut für Mineralogie und Petrographie ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Mineralogy
Start/End 01.10.2007 - 30.09.2008
Approved amount 73'227.00
Show all

Keywords (5)

earth interior; hydrous phase; high pressure; high temperature; sound velocities

Lay Summary (English)

Lead
Lay summary
The contribution of water to the Earth’s interior has been the subject of debate within the earth science community as water is present not only on the surface of the Earth but also in its interior. This question can be answered by experimental results from petrologic and crystallographic studies in combination with seismic observations by geophysical methods.This project targets the measurement of the bulk sound velocities for samples consisting of hydrous silicates, focusing on clinohumite and phase A at high pressure and temperature. The measurement of bulk sound velocities of polycrystalline aggregates are performed with the multi-anvil ultra-high pressure device and the newly acquired ultrasonic measurement equipment installed in our laboratory (Institute for Mineralogy and Petrology, ETH Zurich) in 2002/2003, which offers the unique opportunities for the measurements of elastic properties of mineral aggregates at high confining pressure and temperature. These measurements will allows us, for the first time, to evaluate the influence of hydrous phases on the seismic velocity of subducted oceanic lithosphere and to quantify the amount of hydrous phases present.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

-