Acoustic pattern of dynamic serpentinization processes

Serpentinization, hydration of the oceanic crust, has strong implications for both the physical properties of the crust and the long-term global carbon cycle. We previously reproduced at the ESRF the serpentinization process experimentally both to understand the coupled chemical and physical processes involved and to constrain its impact on the strength of oceanic crust. We wish now to listen to the exact same process, record the acoustic emission produced at the different steps of the process and compare them with a large-scale experiment within the Oman desert where mega-hertz acoustic sensors have been deployed.

蛇纹石化作用（Serpentinization），即大洋地壳的水化过程，对地壳的物理性质与长期全球碳循环均具有重要影响。此前我们在欧洲同步辐射光源（European Synchrotron Radiation Facility, ESRF）开展了蛇纹石化过程的实验重现工作，旨在阐明该过程所涉及的化学与物理耦合机制，并限定其对大洋地壳强度的影响。本次研究中，我们将对该完全一致的过程开展声学监测，记录其不同阶段产生的声发射（acoustic emission）信号，并将这些数据与阿曼沙漠内已部署兆赫兹（mega-hertz）声学传感器的大型野外实验结果进行对比。