Elizabeth S. Cochran
Kayla A. Kroll
Justin Rubinstein
Devin McPhillips
Robert Skoumal
2021
<p>Induced seismicity predominantly occurs along faults that are optimally oriented to the local principal compressive stress direction, and the characterization of these stress orientations is an important component of understanding seismic hazards. The seismicity rate in southern Kansas rapidly increased in 2013 primarily due to the disposal of large volumes of wastewater into the Arbuckle Group. Previously, local stress orientations in this area were poorly constrained, which limited our understanding of the complex faulting and diverse earthquake mechanisms in this region. We use shear‐wave splitting and focal mechanism inversion techniques to create multiple, independent estimates of maximum horizontal stress directions (<span class="inline-formula no-formula-id"><span></span><span id="MathJax-Element-1-Frame" class="MathJax" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><msub xmlns=""><mi>S</mi><mrow><mi>H</mi><mi>max</mi></mrow></msub></math>"><span id="MathJax-Span-1" class="math"><span id="MathJax-Span-2" class="mrow"><span id="MathJax-Span-3" class="msub"></span></span></span></span></span></p>
application/pdf
10.1785/0120200340
en
Seismological Society of America
Characterizing stress orientations in southern Kansas
article