Isotropic Events Observed with a Borehole Array in the Chelungpu Fault Zone, Taiwan

@article{Ma2012IsotropicEO,
  title={Isotropic Events Observed with a Borehole Array in the Chelungpu Fault Zone, Taiwan},
  author={Kuo‐Fong Ma and Yen‐Yu Lin and Shiann-Jong Lee and James J. Mori and Emily E. Brodsky},
  journal={Science},
  year={2012},
  volume={337},
  pages={459 - 463}
}
Cracking Up Hydraulic fracturing by fluids at high pressure results in damage or breakage along cracks in deep rocks, a process that in some cases causes earthquakes. This process can occur naturally when the hydrologic setting is just right, or can be induced by human activity when fluids are pumped at high pressure into deep aquifers. By studying the fault along which the 1999 magnitude 7.6 Chi-Chi earthquake occurred in Taiwan, where there are currently low tectonic stresses following the… 

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The retrieved cores from the Taiwan Chelungpu-fault Drilling Project are presented and the main slip zone associated with the Chi-Chi earthquake is identified and the surface fracture energy estimated from grain sizes in the gouge zone of the fault sample was directly compared to the seismic fracture energy determined from near-field seismic data.

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