We report experimental results on the bulk modulus of partially molten peridotite at mantle conditions, using a multi-anvil high pressure apparatus coupled with synchrotron X-ray radiation. A sinusoidal pressure at an amplitude of 180 MPa with period of 360 s is applied to the sample as a function of temperature. The sample volume derived from the X-ray radiograph also demonstrated sinusoidal variation at the same frequency. The derived bulk modulus from the amplitude of the stress and strain shows that the bulk modulus is drastically reduced at the onset of the melting, as predicated by dynamic melting model.

中文翻译：

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部分熔融橄榄岩的低频体积模量KLB-1

我们使用结合同步加速器X射线辐射的多砧高压装置，报告了在地幔条件下部分熔融橄榄岩的体积模量的实验结果。随温度变化，将振幅为180 MPa，周期为360 s的正弦压力施加到样品上。从X射线照相获得的样品量在相同频率下也显示出正弦变化。由应力和应变的幅度得出的体积模量表明，在熔融开始时，体积模量急剧降低，这是由动态熔融模型预测的。