Table 2

Other Eastern North America (ENA) Potentially Induced Earthquake Stress Parameter Estimates

Date (yyyy/mm/dd)Time (hh:mm)MwRNameDepth (km)fc (Hz)Δσ (MPa)
MidMinMax
2010/10/1510:203.83Guy, Arkansas7.02.50 ± 0.501.930.993.34
2010/11/2019:063.87Guy, Arkansas4.52.40 ± 0.401.961.143.12
2011/02/2805:004.65Greenbrier, Arkansas3.81.30 ± 0.204.612.807.09
2010/04/2502:103.90*South Texas5.01.20 ± 0.303.441.456.72
[0.270.110.53]
2011/07/1706:583.00*Dallas, Texas5.08.00 ± 1.003.602.415.13
2011/09/1112:274.41Central Texas10.02.20 ± 0.409.765.3516.11
2011/10/2012:244.59Comal, Texas5.01.30 ± 0.303.751.716.99
2012/05/1708:124.81Timpson, Texas5.01.80 ± 0.3021.2812.3233.80
2010/05/2719:433.60*South Colorado5.04.00 ± 1.003.581.516.98
2011/08/2223:304.73Valdez, Colorado5.02.00 ± 0.3022.1513.6033.68
2011/08/2305:465.25Valdez, Colorado4.00.70 ± 0.105.723.608.54
2010/05/3121:584.00*South New Mexico5.03.20 ± 0.407.294.8810.38
2011/12/3120:053.75Youngstown, Ohio5.02.70 ± 0.401.851.142.79
2014/03/1006:263.00*Lowellville, Ohio2.59.00 ± 1.005.133.607.03
2014/11/1221:404.78Milan, Kansas2.91.50 ± 0.2011.107.2316.16
2012/11/1004:242.60*Mobile, Alabama0.92.30 ± 0.301.080.711.55
[0.020.010.03]
  • * MwR from Embedded Image.

  • Earthquake in sediments with VS=1.6  km/s. Bracketed value is for crustal VS=3.5  km/s.

  • Earthquake in shallow sediments with VS=0.95  km/s. Bracketed value is for crustal VS=3.5  km/s.