A University of Liverpool scientist has discovered a new layer near the Earth’s core, which will enable the internal temperature of the Earth’s mantle to be measured at a much deeper level than previously possible.
Dr Christine Thomas, from the Department of Earth Sciences, has found a previously undetected seismic layer near the Earth’s core-mantle boundary. Her discovery will allow geophysicists to measure variations in the Earth’s internal temperature near the boundary between the rocky mantle and fluid core, about 2,900 km below the Earth’s surface.
Dr Thomas developed a model with colleagues at University of California Los Angeles (UCLA), which uses a recently discovered phase change (when atoms are compressed into crystals under high pressure) in the lowest part of the Earths mantle. They propose that temperature changes in this area can result in the creation of two seismic layers near the core-mantle boundary, the second of which has been recently discovered by Dr Thomas.
Joanna Robotham | alfa
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