Table 3

ENA Natural Earthquake Stress Parameter Estimates

Date (yyyy/mm/dd)Time (hh:mm)MwRNameDepth (km)fc (Hz)Δσ (MPa)
MidMinMax
1988/11/2523:465.85Saguenay, Québec24.00.76 ± 0.1141.9035.1048.70*
2002/08/1705:533.24Baie‐Saint‐Paul, Québec18.011.00 ± 2.0021.4511.7535.40
2006/04/0708:313.77Baie‐Saint‐Paul, Québec0.02.70 ± 0.501.981.073.29
2008/01/0309:372.77Baie‐Saint‐Paul, Québec13.513.00 ± 2.006.984.2310.73
2010/06/2317:415.04Val‐des‐Bois, Québec5.01.40 ± 0.3022.1610.7539.68
2002/04/2010:504.99Au Sable Forks, New York11.01.40 ± 0.2018.6511.7427.83
2010/09/2603:283.05Concord, New Hampshire3.411.00 ± 2.0011.136.0918.37
2010/07/1604:043.39Montgomery, Maryland5.010.20 ± 1.3028.7119.0741.14
2003/12/0920:594.25Jefferson, Virginia5.02.70 ± 0.5010.385.6217.28
2011/08/2317:515.65Mineral, Virginia6.00.80 ± 0.1034.0022.7848.41
2012/11/1017:084.16Whitesburg, Kentucky19.94.00 ± 1.0024.7410.4448.32
2014/02/1101:112.90Mesic, North Carolina3.815.00 ± 3.0016.818.6129.04
2014/02/1503:234.11Edgefield, South Carolina4.94.00 ± 0.6020.8212.7831.66
2002/06/1817:374.55Caborn, Indiana5.02.70 ± 0.2029.2623.2336.26
2008/04/1809:365.23Mt. Carmel, Illinois14.01.10 ± 0.2020.7211.3534.20
2008/04/1815:144.61Mt. Carmel, Illinois10.01.40 ± 0.105.024.026.17
2011/06/0708:103.86Sullivan, Missouri20.92.60 ± 0.602.411.104.49
2012/02/2109:583.86East Prairie, Missouri5.01.90 ± 0.300.940.561.46
2015/10/1620:263.48Doniphan, Missouri16.04.60 ± 0.403.592.734.61
2015/10/1620:502.90Doniphan, Missouri15.710.60 ± 0.605.934.987.00
2003/04/3004:563.60Blytheville, Arkansas23.05.00 ± 1.006.983.5812.07
2005/05/0112:374.25Shady Grove, Arkansas9.02.20 ± 0.505.622.5910.38
2012/10/2912:393.60Parkin, Arkansas23.15.20 ± 0.407.866.189.81
2015/08/2513:263.49Covington, Tennessee12.26.30 ± 1.009.555.6914.87
2016/09/0913:453.44Tiptonville, Tennessee10.36.80 ± 1.0010.116.2715.26
2016/05/0300:393.20Canton, Mississippi5.09.00 ± 1.0010.237.1914.03
2003/04/2908:594.62Ft. Payne, Alabama19.02.20 ± 0.4020.1611.0433.28
2014/11/2010:253.75Tuscaloosa, Alabama11.72.40 ± 0.201.301.001.65
2016/01/1501:382.60Double Springs, Alabama5.013.00 ± 1.003.883.054.85
2013/07/1107:483.20Fairport Harbor, Ohio5.09.00 ± 2.0010.234.8118.68
2013/11/2017:593.50Nelsonville, Ohio6.07.30 ± 0.7015.3911.3720.25
2010/11/1813:023.30East Nebraska4.98.00 ± 1.0010.156.8014.45
  • * From Boatwright and Seekins (2011).

  • MwR from MbLg.