Station MB HRY - Helena York Bridge

Network: MB - Montana Regional Seismic Network

Nearby stations (2 deg radius)

Station Name (Lat, Lon) Start / End Elevation
HRY Helena York Bridge (46.71, -111.83) 2001-08-15 / 2499-01-01 1344 m
Crust2 Type:P4,orogen/50km, Urals, Tethian Orogen, Rockies 1 km seds.
Thickness Estimate:36 km
Thickness StdDev:3.1 km
Vp/Vs Estimate:1.83
Vp/Vs StdDev:0.09
Vs Estimate:3.451 km/s
Poisson's Ratio:0.29
Peak Value:0.02
Assumed Vp:6.306 km/s
Ps Weight:0.33333334
PpPs Weight:0.33333334
PsPs Weight:0.33333328
Residual Complexity:0.542
Nearby stations H: +-
(2.0 deg) Vp/Vs: +-

6 with match > 90% ( 6.0 %) and 20 with match > 80% ( 20.0 %) out of 100.

Download stack as xyz text file.

Azimuth Distribution of Events:

Prior Results for this Station

Study Thickness Vp/Vs Vp Vs Poissons Ratio Extra
EARS 36 km 1.83 6.306 km/s 3.451 km/s 0.29
Crust2.0 50 km 1.76 6.306 km/s 3.584 km/s 0.26 P4,orogen/50km, Urals, Tethian Orogen, Rockies 1 km seds.
Global Maxima 36 km 1.83 6.306 km/s 3.451 km/s 0.29 amp=0.021444142
Local Maxima 1 26 km 2.10 6.306 km/s 3.006 km/s 0.35 amp=0.011065283
Local Maxima 2 34 km 1.92 6.306 km/s 3.289 km/s 0.31 amp=0.0075222305
Local Maxima 3 46 km 1.65 6.306 km/s 3.822 km/s 0.21 amp=0.007117948
Local Maxima 4 30 km 1.90 6.306 km/s 3.31 km/s 0.31 amp=0.005660813
Predicted Arrivals for vertical incidence
(zero ray parameter)
Ps4.69 SECOND
PpPs16.03 SECOND
PsPs/PpSs20.72 SECOND

Events Processed for this Station

Download zip of receiver functions as SAC

View Record Section

Plot maxima for each earthquake.

Events Used in the Stack

(20 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude
97.6711 75.9 deg 310.021 deg Near West Coast Of Honshu, Japan 2024/01/01 07:10:10 UTC (37.5, 137.2) 0.0 km 7.4 Mi
94.31985 84.7 deg 292.164 deg Mariana Islands 2024/04/05 11:03:16 UTC (19.1, 145.4) 222 km 6.8 mww
93.072845 91.9 deg 352.114 deg Kyrgyzstan-Xinjiang Border Reg. 2024/01/22 18:09:04 UTC (41.3, 78.6) 13 km 7.0 Mww
91.54641 94.5 deg 312.531 deg Taiwan 2024/04/03 00:35:36 UTC (24.2, 121.7) 10 km 5.7 mb
91.147865 94.8 deg 312.455 deg Taiwan 2024/04/02 23:58:11 UTC (23.8, 121.6) 35 km 7.4 mww
90.148544 75.9 deg 309.968 deg Near West Coast Of Honshu, Japan 2024/06/02 21:31:38 UTC (37.5, 137.2) 4.8 km 5.8 mww
89.84827 41.3 deg 302.727 deg Andreanof Islands, Aleutian Is. 2023/10/16 11:35:31 UTC (52.4, -176.9) 187 km 6.4 Mww
88.73895 86.2 deg 288.905 deg Mariana Islands 2024/04/02 09:54:09 UTC (15.8, 146.9) 10 km 6.2 mww
87.77851 37.8 deg 300.571 deg Fox Islands, Aleutian Islands 2024/05/19 09:35:24 UTC (52.2, -170.9) 28 km 6.0 mww
87.37261 86.6 deg 238.317 deg Tonga Islands 2023/12/11 06:33:31 UTC (-18.7, -175.5) 238 km 6.1 Mww
87.14024 85.1 deg 291.612 deg Mariana Islands 2024/01/20 15:48:41 UTC (18.5, 145.6) 195 km 6.1 mww
86.520226 86.8 deg 237.429 deg Tonga Islands 2024/05/26 20:47:09 UTC (-19.4, -174.9) 112 km 6.6 mww
85.9579 80.0 deg 303.169 deg Southeast Of Honshu, Japan 2023/10/05 01:59:58 UTC (30.0, 139.9) 10 km 6.1 mww
84.76847 36.1 deg 146.73 deg Near Coast Of Chiapas, Mexico 2024/05/12 11:39:14 UTC (14.5, -92.4) 75 km 6.4 mww
83.837944 55.1 deg 82.137 deg Northern Mid-Atlantic Ridge 2024/06/03 06:41:51 UTC (29.6, -42.8) 10 km 5.9 mww
82.9583 83.5 deg 145.166 deg Near Coast Of Central Chile 2023/10/31 12:33:44 UTC (-28.7, -71.6) 41 km 6.7 mww
82.55431 73.2 deg 307.309 deg Near East Coast Of Honshu, Japan 2024/04/04 03:16:31 UTC (37.7, 141.9) 40 km 6.1 Mww
82.40023 81.8 deg 301.997 deg Bonin Islands, Japan Region 2024/04/27 08:35:34 UTC (27.8, 139.6) 503 km 6.5 mww
80.411385 37.1 deg 144.21 deg Guatemala 2024/01/27 05:52:49 UTC (14.1, -90.5) 108 km 6.1 Mww
80.19483 81.5 deg 179.133 deg Southern East Pacific Rise 2024/02/23 01:51:12 UTC (-35.1, -110.8) 2.0 km 6.3 Mww

Losers

(80 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude Reason
79.9154 84.2 deg 295.97 deg Volcano Islands, Japan Region 2024/02/12 11:19:36 UTC (22.0, 142.7) 250 km 6.1 mww
79.620636 83.1 deg 144.789 deg Near Coast Of Central Chile 2024/02/11 21:14:43 UTC (-28.2, -71.4) 34 km 5.4 Mww
79.05917 79.9 deg 303.189 deg Southeast Of Honshu, Japan 2023/10/06 01:31:17 UTC (30.0, 140.0) 10 km 6.1 mww
76.191414 78.5 deg 94.23 deg Central Mid-Atlantic Ridge 2024/02/12 04:11:10 UTC (5.5, -32.8) 10 km 5.5 Mww
75.820244 96.3 deg 270.151 deg New Ireland Region, P.N.G. 2023/10/03 01:56:17 UTC (-4.5, 153.7) 86 km 5.7 mww
75.02547 65.5 deg 135.077 deg Western Brazil 2024/01/28 09:38:56 UTC (-8.2, -71.4) 609 km 6.5 Mww
74.80527 97.4 deg 246.03 deg Southeast Of Loyalty Islands 2024/04/19 09:18:01 UTC (-21.9, 170.8) 96 km 5.7 mww
74.63366 87.2 deg 147.407 deg Near Coast Of Central Chile 2023/11/06 13:51:10 UTC (-33.1, -72.0) 29 km 5.2 Mww
74.51224 97.5 deg 247.996 deg Vanuatu Islands 2023/12/07 12:56:30 UTC (-20.7, 169.2) 48 km 7.1 Mww
74.418365 86.6 deg 237.911 deg Tonga Islands 2024/01/18 22:12:20 UTC (-18.9, -175.1) 218 km 6.4 Mww
73.74762 81.7 deg 310.247 deg Shikoku, Japan 2024/04/17 14:14:45 UTC (33.2, 132.4) 26 km 6.3 mww
72.91923 75.7 deg 309.948 deg Near West Coast Of Honshu, Japan 2024/01/01 09:03:49 UTC (37.6, 137.4) 10 km 5.5 mb
72.46932 94.9 deg 312.391 deg Taiwan 2024/04/22 14:11:22 UTC (23.7, 121.6) 8.0 km 5.8 mww
71.808846 68.6 deg 142.943 deg Near Coast Of Peru 2023/12/10 11:52:49 UTC (-14.4, -76.5) 10 km 5.7 Mww
70.76156 84.5 deg 291.456 deg Mariana Islands 2023/12/10 14:11:39 UTC (18.8, 146.1) 119 km 5.7 mww
70.145805 70.9 deg 183.989 deg Southern East Pacific Rise 2024/01/06 12:33:02 UTC (-24.4, -116.0) 10 km 5.5 Mwb
69.28233 94.2 deg 262.389 deg Solomon Islands 2023/11/07 07:47:09 UTC (-8.3, 160.8) 39 km 5.5 mww
68.03792 84.8 deg 237.695 deg Tonga Islands 2023/10/27 03:02:24 UTC (-17.6, -173.8) 35 km 5.6 mb
67.484924 30.3 deg 154.377 deg Central Mexico 2023/12/07 20:03:38 UTC (18.4, -98.6) 44 km 5.8 mww
67.279655 86.0 deg 238.586 deg Tonga Islands 2023/12/12 04:00:15 UTC (-18.0, -175.3) 261 km 5.8 Mww
65.1962 79.7 deg 303.197 deg Southeast Of Honshu, Japan 2023/10/06 13:15:27 UTC (30.2, 140.1) 10 km 5.0 Mww
63.69447 49.8 deg 313.182 deg Komandorskiye Ostrova Region 2023/10/26 16:05:11 UTC (56.1, 164.7) 2.4 km 5.9 Mww
62.579117 78.0 deg 140.848 deg Near Coast Of Northern Chile 2023/12/21 16:21:52 UTC (-21.9, -70.1) 63 km 5.6 mww
61.41007 54.8 deg 310.807 deg Near East Coast Of Kamchatka 2023/12/23 17:48:03 UTC (52.0, 159.0) 29 km 5.8 Mww
61.20021 75.7 deg 309.911 deg Near West Coast Of Honshu, Japan 2024/01/01 09:08:17 UTC (37.5, 137.4) 10 km 5.6 mb
60.70402 64.6 deg 134.726 deg Western Brazil 2024/01/20 21:31:07 UTC (-7.3, -71.5) 629 km 6.5 Mww
60.287834 38.9 deg 326.855 deg Near N. Coast Of Eastern Siberia 2024/05/06 11:11:57 UTC (68.0, -177.6) 9.3 km 5.3 Mww
59.99702 83.6 deg 145.206 deg Near Coast Of Central Chile 2024/02/14 01:31:41 UTC (-28.9, -71.5) 22 km 6.0 mww
59.80286 91.0 deg 13.811 deg Caspian Sea 2023/12/07 04:15:40 UTC (41.2, 49.7) 42 km 5.4 Mww
59.2977 92.5 deg 255.179 deg Santa Cruz Islands 2024/05/21 09:50:43 UTC (-12.1, 167.3) 248 km 5.4 Mww
59.24783 45.1 deg 247.328 deg Hawaii 2024/02/09 20:06:30 UTC (19.0, -155.5) 10 km 6.3 Mi
59.089233 36.9 deg 145.601 deg Near Coast Of Guatemala 2023/12/14 17:55:01 UTC (14.0, -91.4) 78 km 5.4 Mww
58.55817 97.1 deg 358.026 deg Hindu Kush Region, Afghanistan 2024/01/11 09:20:26 UTC (36.5, 70.6) 207 km 6.4 Mww
58.056732 43.5 deg 303.151 deg Rat Islands, Aleutian Islands 2024/02/28 15:50:21 UTC (51.9, 179.6) 119 km 5.5 mww
56.92175 94.8 deg 244.294 deg Vanuatu Islands Region 2023/11/28 07:39:35 UTC (-21.1, 174.1) 10 km 5.8 Mww
56.871002 82.0 deg 299.673 deg Bonin Islands, Japan Region 2024/05/21 00:39:37 UTC (26.2, 141.4) 38 km 5.4 Mww
56.699203 52.9 deg 19.97 deg Norwegian Sea 2023/12/13 20:20:10 UTC (72.6, 3.5) 10 km 5.5 mww
55.952045 84.9 deg 308.381 deg Southeast Of Ryukyu Islands 2024/04/15 22:38:57 UTC (29.5, 131.7) 8.0 km 5.9 mww
55.76684 40.6 deg 122.529 deg Jamaica Region 2023/10/30 15:57:20 UTC (18.2, -76.6) 10 km 5.4 mww
55.417137 96.5 deg 233.961 deg Kermadec Islands, New Zealand 2024/05/17 20:58:27 UTC (-29.1, -178.5) 196 km 5.8 Mww
55.30029 95.4 deg 261.047 deg Solomon Islands 2024/04/12 15:59:18 UTC (-10.2, 160.9) 42 km 5.8 Mww
55.26487 95.2 deg 260.735 deg Solomon Islands 2023/10/28 05:31:58 UTC (-10.2, 161.3) 69 km 5.5 mww
55.163624 62.6 deg 308.736 deg Kuril Islands 2023/11/10 10:10:04 UTC (45.9, 151.0) 107 km 5.8 mww
55.161835 39.8 deg 141.398 deg Near Coast Of Nicaragua 2024/03/17 00:44:03 UTC (12.4, -87.7) 53 km 5.6 mww
54.7296 89.3 deg 287.963 deg South Of Mariana Islands 2024/04/16 14:58:56 UTC (12.9, 145.4) 18 km 5.4 mww
54.612453 94.2 deg 252.723 deg Vanuatu Islands 2023/11/22 04:47:31 UTC (-15.0, 168.0) 13 km 6.7 mww
54.34263 94.9 deg 312.389 deg Taiwan 2024/05/06 09:45:30 UTC (23.7, 121.6) 20 km 5.6 Mww
54.340622 87.9 deg 241.646 deg Fiji Islands Region 2023/10/31 11:10:56 UTC (-17.5, -179.0) 548 km 6.4 mww
54.27382 84.3 deg 142.967 deg La Rioja Province, Argentina 2024/01/03 08:04:01 UTC (-28.5, -68.9) 155 km 5.5 mww
53.82388 95.8 deg 251.341 deg Vanuatu Islands 2024/05/25 22:23:16 UTC (-17.1, 167.9) 29 km 6.3 mww
53.30995 98.1 deg 271.047 deg New Britain Region, P.N.G. 2024/05/10 11:48:41 UTC (-5.2, 151.8) 40 km 5.6 Mww
52.814335 97.8 deg 344.827 deg Xizang 2024/06/01 00:46:37 UTC (34.2, 86.4) 13 km 5.6 mb
52.79482 89.0 deg 24.16 deg Turkey 2024/04/18 15:11:25 UTC (40.0, 36.0) 10 km 5.6 Mww
52.611946 42.0 deg 139.053 deg Nicaragua 2024/04/17 21:21:54 UTC (11.1, -85.3) 154 km 5.5 mww
51.942425 51.0 deg 169.623 deg Central East Pacific Rise 2024/05/13 02:46:59 UTC (-4.0, -103.8) 10 km 5.3 Mww
51.243446 72.6 deg 140.789 deg Near Coast Of Peru 2024/01/12 13:00:49 UTC (-17.1, -72.7) 78 km 5.3 Mww
51.160378 86.1 deg 288.934 deg Mariana Islands 2024/04/02 22:16:44 UTC (15.9, 146.9) 10 km 5.2 Mww
50.601128 82.6 deg 238.751 deg Tonga Islands 2023/12/12 05:33:10 UTC (-15.2, -173.3) 10 km 5.7 mww
50.56232 79.9 deg 303.23 deg Southeast Of Honshu, Japan 2023/10/05 06:22:12 UTC (30.1, 140.0) 10 km 5.6 Mww
49.265614 93.4 deg 254.643 deg Vanuatu Islands 2023/10/28 09:55:28 UTC (-13.1, 167.1) 201 km 5.6 mww
49.209885 79.6 deg 306.303 deg Southeast Of Honshu, Japan 2024/05/29 17:14:58 UTC (32.3, 137.6) 392 km 5.5 Mww
48.79872 86.8 deg 235.674 deg Tonga Islands 2023/12/23 23:44:46 UTC (-20.4, -173.4) 10 km 5.6 mww
47.417107 79.8 deg 303.235 deg Southeast Of Honshu, Japan 2023/10/06 05:49:22 UTC (30.1, 140.0) 10 km 5.6 mww
47.29025 88.7 deg 237.801 deg Fiji Islands Region 2023/10/28 04:33:30 UTC (-20.6, -176.4) 215 km 5.5 Mww
47.04078 75.9 deg 310.002 deg Near West Coast Of Honshu, Japan 2024/01/01 07:06:05 UTC (37.5, 137.2) 10 km 5.5 mww
46.698692 96.9 deg 271.747 deg New Ireland Region, P.N.G. 2024/05/18 14:04:44 UTC (-3.8, 152.1) 10 km 5.7 mww
46.631668 44.1 deg 303.748 deg Rat Islands, Aleutian Islands 2024/03/30 16:28:57 UTC (52.1, 178.4) 115 km 5.8 mww
46.057262 94.8 deg 312.358 deg Taiwan 2024/04/23 00:04:05 UTC (23.8, 121.7) 13 km 5.8 mww
45.248787 93.5 deg 289.712 deg W. Caroline Islands, Micronesia 2024/05/05 05:44:19 UTC (10.9, 141.2) 10 km 5.6 mb
45.021526 83.9 deg 292.708 deg Mariana Islands 2023/11/25 15:10:53 UTC (20.1, 145.6) 10 km 5.5 Mww
45.014217 94.8 deg 252.506 deg Vanuatu Islands 2023/09/28 14:40:26 UTC (-15.6, 167.7) 126 km 6.0 mww
43.765488 71.6 deg 309.194 deg Near East Coast Of Honshu, Japan 2024/04/01 19:24:36 UTC (40.1, 141.7) 73 km 5.9 mww
41.898605 90.9 deg 289.026 deg South Of Mariana Islands 2024/02/04 09:50:42 UTC (12.4, 143.5) 10 km 5.7 Mi
41.045 98.2 deg 247.394 deg Southeast Of Loyalty Islands 2023/12/17 07:37:59 UTC (-21.6, 169.2) 10 km 5.7 Mww
40.056667 96.4 deg 250.86 deg Vanuatu Islands 2024/01/23 14:33:47 UTC (-17.9, 167.8) 10 km 6.5 Mi
37.67461 96.2 deg 250.651 deg Vanuatu Islands 2023/11/11 12:35:30 UTC (-17.9, 168.1) 24 km 5.5 mww
33.241714 92.0 deg 352.168 deg Kyrgyzstan-Xinjiang Border Reg. 2024/01/23 20:38:13 UTC (41.1, 78.6) 10 km 5.2 Mww
31.039799 95.5 deg 232.944 deg Kermadec Islands Region 2024/05/31 15:54:41 UTC (-29.0, -176.9) 20 km 6.2 mww
25.985378 79.9 deg 303.105 deg Southeast Of Honshu, Japan 2023/10/04 00:13:45 UTC (30.0, 140.1) 10 km 5.5 Mww
23.178091 96.9 deg 249.148 deg Vanuatu Islands 2023/10/29 04:32:08 UTC (-19.4, 168.8) 80 km 6.0 mww