13-004 Fracture Decouple Experiment 2 Anastasia Stroujkova Weston Geophysical Corp. Well-known hypothetical nuclear explosion evasion scenarios include cavity decoupling and placing nuclear tests within routine ripple-fired mine explosions. We consider a different scenario: using “repeat shots” - explosions conducted in the damage (fracture) zone created by an earlier explosion(s), which may considerably reduce the amplitudes of the subsequent explosions due to a fracture decoupling. We conducted a unique experiment to quantify the effects of fractures on chemical explosion decoupling. We conducted a series of explosions (shots) in order to extensively fracture granitic emplacement media. Seismic signals from the explosions were recorded on temporary near-source and local stations as well as permanent stations. We then re-drilled the same blast holes and reloaded the holes for a second series of equivalent yield shots. *** Please check the following lines and remove this line before submission to DMC. *** Shots shot id time lat lon elev (m) size (kg) depth (m) ------------------------------------------------------------------------------------- 1 2012:279:20:50:17.356 43.688440 -71.850690 393.530 45.360 16.150 2 2012:279:21:12:25.127 43.688400 -71.851000 394.000 45.360 16.920 3 2012:279:21:40:15.249 43.688260 -71.850800 394.390 122.470 16.460 4 2012:293:17:02:12.069 43.688430 -71.850710 393.530 45.360 17.070 5 2012:293:17:18:15.075 43.688410 -71.850980 393.440 45.360 17.370 6 2012:293:17:41:16.864 43.688260 -71.850800 394.390 122.470 16.920 7 2012:293:18:03:57.481 43.687130 -71.851340 384.050 45.360 14.940 Arrays *** Please check the following lines and remove this line before submission to DMC. *** Array: 001 Sample Rate: 1000 sps Deployment Time: 2012:279:00:00 Pickup Time: 2012:293:23:59 Components: 1 => Z, 2 => N, 3 => E station das lat lon elev (m) component ----------------------------------------------------------------- 11055 964E 43.685980 -71.844110 348.000 1 11055 964E 43.685980 -71.844110 348.000 2 11055 964E 43.685980 -71.844110 348.000 3 11056 9E39 43.685620 -71.841610 346.000 1 11056 9E39 43.685620 -71.841610 346.000 2 11056 9E39 43.685620 -71.841610 346.000 3 11057 A095 43.686960 -71.838470 360.000 1 11057 A095 43.686960 -71.838470 360.000 2 11057 A095 43.686960 -71.838470 360.000 3 11058 98AA 43.688050 -71.835950 363.000 1 11058 98AA 43.688050 -71.835950 363.000 2 11058 98AA 43.688050 -71.835950 363.000 3 11062 A203 43.693080 -71.846620 400.000 1 11062 A203 43.693080 -71.846620 400.000 2 11062 A203 43.693080 -71.846620 400.000 3 11063 9BBB 43.695130 -71.847000 394.000 1 11063 9BBB 43.695130 -71.847000 394.000 2 11063 9BBB 43.695130 -71.847000 394.000 3 11064 9668 43.695130 -71.847000 394.000 1 11064 9668 43.695130 -71.847000 394.000 2 11064 9668 43.695130 -71.847000 394.000 3 11065 AB17 43.696030 -71.851010 375.000 1 11065 AB17 43.696030 -71.851010 375.000 2 11065 AB17 43.696030 -71.851010 375.000 3 11066 AB07 43.697220 -71.854160 364.000 1 11066 AB07 43.697220 -71.854160 364.000 2 11066 AB07 43.697220 -71.854160 364.000 3 11067 9DDF 43.697980 -71.857680 350.000 1 11067 9DDF 43.697980 -71.857680 350.000 2 11067 9DDF 43.697980 -71.857680 350.000 3 11068 9754 43.702610 -71.860610 308.000 1 11068 9754 43.702610 -71.860610 308.000 2 11068 9754 43.702610 -71.860610 308.000 3 11069 9395 43.694980 -71.858590 380.000 1 11069 9395 43.694980 -71.858590 380.000 2 11069 9395 43.694980 -71.858590 380.000 3 11071 98EA 43.684790 -71.856030 420.000 1 11071 98EA 43.684790 -71.856030 420.000 2 11071 98EA 43.684790 -71.856030 420.000 3 11072 9AB5 43.683050 -71.856790 458.000 1 11072 9AB5 43.683050 -71.856790 458.000 2 11072 9AB5 43.683050 -71.856790 458.000 3 11074 AB1B 43.692690 -71.861650 397.000 1 11074 AB1B 43.692690 -71.861650 397.000 2 11074 AB1B 43.692690 -71.861650 397.000 3 11075 969F 43.686820 -71.857820 423.000 1 11075 969F 43.686820 -71.857820 423.000 2 11075 969F 43.686820 -71.857820 423.000 3 11076 9DB4 43.686460 -71.860400 425.000 1 11076 9DB4 43.686460 -71.860400 425.000 2 11076 9DB4 43.686460 -71.860400 425.000 3 11077 939F 43.685870 -71.863120 462.000 1 11077 939F 43.685870 -71.863120 462.000 2 11077 939F 43.685870 -71.863120 462.000 3 11078 9BC4 43.687320 -71.866170 435.000 1 11078 9BC4 43.687320 -71.866170 435.000 2 11078 9BC4 43.687320 -71.866170 435.000 3 11079 9407 43.689670 -71.864040 404.000 1 11079 9407 43.689670 -71.864040 404.000 2 11079 9407 43.689670 -71.864040 404.000 3 *** Please check the following lines and remove this line before submission to DMC. *** Array: 002 Sample Rate: 500 sps Deployment Time: 2012:279:00:00 Pickup Time: 2012:293:23:59 Components: 1 => Z, 2 => N, 3 => E station das lat lon elev (m) component ----------------------------------------------------------------- 12050 9E3A 43.717220 -71.779540 250.000 1 12050 9E3A 43.717220 -71.779540 250.000 2 12050 9E3A 43.717220 -71.779540 250.000 3 12051 AAEB 43.647380 -71.747590 228.000 1 12051 AAEB 43.647380 -71.747590 228.000 2 12051 AAEB 43.647380 -71.747590 228.000 3 12052 9E00 43.666970 -71.938420 591.000 1 12052 9E00 43.666970 -71.938420 591.000 2 12052 9E00 43.666970 -71.938420 591.000 3 12053 965F 43.746900 -71.857480 453.000 1 12053 965F 43.746900 -71.857480 453.000 2 12053 965F 43.746900 -71.857480 453.000 3 12054 91E6 43.605310 -71.876720 569.000 1 12054 91E6 43.605310 -71.876720 569.000 2 12054 91E6 43.605310 -71.876720 569.000 3 12059 9389 43.697470 -71.833150 259.000 1 12059 9389 43.697470 -71.833150 259.000 2 12059 9389 43.697470 -71.833150 259.000 3 12060 A125 43.731880 -71.925060 410.000 1 12060 A125 43.731880 -71.925060 410.000 2 12060 A125 43.731880 -71.925060 410.000 3 12061 9D7C 43.674190 -71.805830 354.000 1 12061 9D7C 43.674190 -71.805830 354.000 2 12061 9D7C 43.674190 -71.805830 354.000 3 12070 9AB0 43.690270 -71.888210 432.000 1 12070 9AB0 43.690270 -71.888210 432.000 2 12070 9AB0 43.690270 -71.888210 432.000 3 12073 967D 43.661420 -71.873760 432.000 1 12073 967D 43.661420 -71.873760 432.000 2 12073 967D 43.661420 -71.873760 432.000 3 *** Please check the following lines and remove this line before submission to DMC. *** Array: 003 Sample Rate: 1000 sps Deployment Time: 2012:279:00:00 Pickup Time: 2012:279:23:59 Components: 1 => Z, 2 => N, 3 => E station das lat lon elev (m) component ----------------------------------------------------------------- 13001 12628 43.687060 -71.851360 396.000 1 13002 13666 43.686190 -71.850190 399.000 1 13003 14004 43.685870 -71.848270 384.000 1 13004 12603 43.686100 -71.846200 358.000 1 13005 13880 43.685710 -71.845150 356.000 1 13006 11916 43.685830 -71.843390 357.000 1 13007 13737 43.685650 -71.842160 343.000 1 13008 12743 43.686090 -71.840640 357.000 1 13009 13985 43.686490 -71.839230 363.000 1 13010 14084 43.687400 -71.837850 358.000 1 13011 13668 43.687840 -71.836530 347.000 1 13012 12673 43.688140 -71.835320 338.000 1 13013 12949 43.691750 -71.834750 211.000 1 13014 13681 43.693920 -71.834570 289.000 1 13015 13966 43.696410 -71.835140 270.000 1 13016 13784 43.696980 -71.834210 251.000 1 13017 13898 43.697470 -71.833180 246.000 1 13018 12502 43.697800 -71.831920 242.000 1 13019 12710 43.688750 -71.850550 403.000 1 13020 12126 43.689760 -71.849980 402.000 1 13021 13744 43.690140 -71.849020 399.000 1 13022 13706 43.690560 -71.847810 406.000 1 13023 12479 43.691450 -71.847100 413.000 1 13024 13677 43.688360 -71.851270 394.000 1 13025 12634 43.693350 -71.846510 409.000 1 13026 12889 43.694480 -71.846900 406.000 1 13027 14036 43.696030 -71.850590 385.000 1 13028 12100 43.696790 -71.852790 374.000 1 13029 12699 43.697350 -71.854830 366.000 1 13030 12888 43.698180 -71.855290 348.000 1 13031 13935 43.699170 -71.855470 351.000 1 13032 13733 43.699790 -71.857020 348.000 1 13033 12668 43.700040 -71.858450 341.000 1 13034 11836 43.700850 -71.858940 345.000 1 13035 13746 43.701730 -71.859530 336.000 1 13036 13908 43.702310 -71.860380 319.000 1 13037 12565 43.688040 -71.851390 415.000 1 13038 13598 43.687280 -71.851850 393.000 1 13039 12505 43.687420 -71.853630 409.000 1 13040 13988 43.687460 -71.854940 409.000 1 13041 12170 43.687150 -71.856190 417.000 1 13042 11676 43.686940 -71.857340 421.000 1 13043 12164 43.686960 -71.858590 427.000 1 13044 12006 43.686570 -71.859770 427.000 1 13045 12419 43.686270 -71.860940 432.000 1 13046 13624 43.685830 -71.862050 439.000 1 13047 11798 43.685960 -71.863500 438.000 1 13048 12915 43.686360 -71.864830 453.000 1 13049 11678 43.686040 -71.865900 464.000 1 *** Please check the following lines and remove this line before submission to DMC. *** Array: 004 Sample Rate: 1000 sps Deployment Time: 2012:293:00:00 Pickup Time: 2012:293:23:59 Components: 1 => Z, 2 => N, 3 => E station das lat lon elev (m) component ----------------------------------------------------------------- 14101 11798 43.687060 -71.851360 396.000 1 14102 13624 43.686190 -71.850190 399.000 1 14103 12889 43.685870 -71.848270 384.000 1 14104 12164 43.686100 -71.846200 358.000 1 14105 12915 43.685710 -71.845150 356.000 1 14106 13733 43.685830 -71.843390 357.000 1 14107 12668 43.685650 -71.842160 343.000 1 14119 13598 43.688750 -71.850550 403.000 1 14120 12006 43.689760 -71.849980 402.000 1 14121 13988 43.690140 -71.849020 399.000 1 14122 13713 43.690560 -71.847810 406.000 1 14123 12419 43.691450 -71.847100 413.000 1 14124 14036 43.688360 -71.851270 394.000 1 14125 12479 43.693350 -71.846510 409.000 1 14126 12699 43.694480 -71.846900 406.000 1 14127 12100 43.696030 -71.850590 385.000 1 14128 12888 43.696790 -71.852790 374.000 1 14129 13746 43.697350 -71.854830 366.000 1 14137 11676 43.688040 -71.851390 415.000 1 14138 12170 43.687280 -71.851850 393.000 1 14139 13706 43.687420 -71.853630 409.000 1 14140 12565 43.687460 -71.854940 409.000 1 14141 11678 43.687150 -71.856190 417.000 1