5:25 PM - 5:40 PM
[SCG15-07] Feasibility study of characterizing crustal cracks by EMR in the VLF band using interferometry
Keywords:seismoelecgtric, crustal cracks, interferometry, VLF, electromagnetic radiation, numerical simulation
1)Investigate the EMR efficiency on the surface by looking into different physical mechanisms (such as charge separation processes between (OKeefe and Thiel, 1995) or along (Gershenzon et al., 1986) the crack walls associated with micro-cracking; 2) crack-induced movement and reorientation of dislocations (Misra and Gosh, 1980; Slifkin, 1993); 3) the surface vibrational-wave model of Frid et al. (2003) and Rabinovitch et al. (2007)).
2)Investigate the influence of strong radiation from VLF transmitters on using EMR for tectonic and earthquake studies.
As the existing preliminary observations (e.g., Krumbholz, 2010; Krumbholz et al. 2012) have shown, the hope of using EMR to determine the horizontal principal stress orientation at one location by looking into the EM amplitude from a single station alone is diminished. This motivates us to look into the interferometry approach to eliminate the strong influence of active VLF transmissions.