Co-seismic damage and post-mainshock healing of fault rocks at Landers, Hector Mine and Parkfield, California viewed by fault-zone trapped waves
Yong-Gang LiPublished 2014, SCEC Contribution #1945
This Chapter is to review fault rock co-seismic damage and post-mainshock healing progressions associated with the 1992 M7.4 Landers, the 1999 M7.1 Hector Mine, and the 2004 M6.0 Parkfield earthquakes in California through observations and 3-D finite-difference modeling of fault-zone trapped waves (FZTWs) generated by explosions and aftershocks within and close to the rupture zone and recorded at linear seismic arrays deployed across and along the ruptured faults. These FZTWs allow us to delineate internal structures and physical properties of rupture zones at seismogenic depths with high-resolution. The spatial extent of damage zones, the spatial-varying structure, the damage zone segmentation, and the temporal changes in damage magnitude associated with the recent earthquakes are discussed in this Chapter. The knowledge of spatial and temporal (4-D) patterns in fault zone structure will help predict the behavior of future earthquakes on active faults, and will also help evaluate the fault rupture models and earthquake hazards as well.
Citation
Li, Y. (2014). Co-seismic damage and post-mainshock healing of fault rocks at Landers, Hector Mine and Parkfield, California viewed by fault-zone trapped waves. In 0 (Eds.), Imaging, Modeling and Assimilation in Seismology, (Chapter 4, pp. 162-224) Beijing and Boston, : China High Education Press with De Gruyter
