Scanning ESR microscopy for nondestructive analyses of drill cores

我们开发了一种用于钻芯无损分析的扫描ESR(电子自旋共振)显微技术，并对Nojima断裂岩或台湾车龙铺断裂钻探项目(TCDP)深部钻芯进行了一维和二维地震摩擦热或磁化率测量。结果，我们成功地从地震摩擦热产生的铁磁共振(FMR)信号或顺磁有机自由基(g=2.004)的二维ESR图像中可视化了过去地震产生的摩擦热的状态。

We developed a scanning ESR(electron spin resonance) microscopic technique for nondestructive analyses of drill cores and carried out one-and two-dimensional measurements of seismic frictional heat or magnetic susceptibility of the Nojima fault rocks or Taiwan Chelungpu Fault Drilling Project(TCDP) deep drill cores. As a result, we have succeeded in visualizing the state of frictional heat generated by past earthquakes from 2-D ESR images of ferrimagnetic resonance(FMR) signals or a paramagnetic organic radical(g=2. 004), which are produced by seismic frictional heat.