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Focal mechanisms of induced seismicity in Kansas

Amandine Amemoutou, PhD student in our section, published her first study on analysis of seismic moment tensors and stress tensors from induced seismicity associated with wastewater injection in Southern Kansas, US. The paper has been published in recent issue of the Journal of Geophysical Research: Solid Earth. In her work, Amandine used successfully both hybridMT and MSATSI software packages.

Key points:

  • Seventeen percent of calculated full moment tensors in southern Kansas contain significant volumetric components.
  • Areas containing significant volumetric components are localized around the epicentral location of the largest earthquakes.
  • Around the 2014 MW 4.9 Milan earthquake, maximum horizontal stress is rotated 25 degrees clockwise with respect to the average stress direction in a region

Reference:

Amemoutou, A., P. Martínez-Garzón, G. Kwiatek, J. L. Rubinstein, and M. Bohnhoff (2021). Earthquake Source Mechanisms and Stress Field Variations Associated With Wastewater-Induced Seismicity in Southern Kansas, USA. Journal of Geophysical Research: Solid Earth 126, e2020JB021625, DOI: 10.1029/2020JB021625. [ Article Page ]