Composition of the Earth's inner core from high-pressure sound velocity measurements in Fe-Ni-Si alloys

Details Composition of the Earth's inner core from high-pressure sound velocity measurements in Fe-Ni-Si alloys Composition of the Earth's inner core from high-pressure sound velocity measurements in Fe-Ni-Si alloys

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010e%26psl.295..292a&link_type=abstract

Earth and Planetary Science Letters, Volume 295, Issue 1-2, p. 292-296.

Computer Science

Sound

9

Scientific paper

We performed room-temperature sound velocity and density measurements on a polycrystalline alloy, Fe0.89Ni0.04Si0.07, in the hexagonal close-packed (hcp) phase up to 108 GPa. Over the investigated pressure range the aggregate compressional sound velocity is ˜ 9% higher than in pure iron at the same density. The measured aggregate compressional (VP) and shear (VS) sound velocities, extrapolated to core densities and corrected for anharmonic temperature effects, are compared with seismic profiles. Our results provide constraints on the silicon abundance in the core, suggesting a model that simultaneously matches the primary seismic observables, density, P-wave and S-wave velocities, for an inner core containing 4 to 5 wt.% of Ni and 1 to 2 wt.% of Si.

Affiliated with

Also associated with

No associations

Rating

Composition of the Earth's inner core from high-pressure sound velocity measurements in Fe-Ni-Si alloys does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Composition of the Earth's inner core from high-pressure sound velocity measurements in Fe-Ni-Si alloys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition of the Earth's inner core from high-pressure sound velocity measurements in Fe-Ni-Si alloys will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-837660