Station AV BRPK - Brown Peak, Shishaldin Volcano, Alaska
Network: AV - Alaska Volcano Observatory
Nearby stations (2 deg radius)

Station | Name | (Lat, Lon) | Start / End | Elevation |
BRPK | Brown Peak, Shishaldin Volcano, Alaska | (54.64, -163.74) | 1997-07-27 / 2499-01-01 | 402 m |
Crust2 Type: | C4,continental shelf, 3.5 km seds. |
Thickness Estimate: | 35 km |
Thickness StdDev: | 7.7 km |
Vp/Vs Estimate: | 1.93 |
Vp/Vs StdDev: | 0.14 |
Vs Estimate: | 3.103 km/s |
Poisson's Ratio: | 0.32 |
Peak Value: | 0.03 |
Assumed Vp: | 5.989 km/s |
Ps Weight: | 0.33333334 |
PpPs Weight: | 0.33333334 |
PsPs Weight: | 0.33333328 |
Residual Complexity: | 0.575 |
Nearby stations H: | +- |
(2.0 deg) Vp/Vs: | +- |
2 with match > 90% ( 3.6363637 %) and 10 with match > 80% ( 18.181818 %) out of 55.
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 | 35 km | 1.93 | 5.989 km/s | 3.103 km/s | 0.32 | |
Crust2.0 | 32 km | 1.81 | 5.989 km/s | 3.317 km/s | 0.28 | C4,continental shelf, 3.5 km seds. |
Global Maxima | 35 km | 1.93 | 5.989 km/s | 3.103 km/s | 0.32 | amp=0.027832808 |
Local Maxima 1 | 38 km | 1.72 | 5.989 km/s | 3.492 km/s | 0.24 | amp=0.015684858 |
Local Maxima 2 | 36 km | 2.01 | 5.989 km/s | 2.983 km/s | 0.33 | amp=0.01261515 |
Local Maxima 3 | 30 km | 2.09 | 5.989 km/s | 2.866 km/s | 0.35 | amp=0.008704254 |
Local Maxima 4 | 30 km | 1.84 | 5.989 km/s | 3.264 km/s | 0.29 | amp=0.008158387 |
Predicted Arrivals for vertical incidence (zero ray parameter) | |
Ps | 5.43 SECOND |
PpPs | 17.12 SECOND |
PsPs/PpSs | 22.56 SECOND |
Events Processed for this Station
Download zip of receiver functions as SAC
Plot maxima for each earthquake.
Events Used in the Stack
(10 events)Radial Match | Distance | Baz | FERegion | Time | Lat/Lon | Depth | Magnitude |
91.23003 | 52.3 deg | 247.99 deg | Mariana Islands | 2024/04/05 11:03:16 GMT | (19.1, 145.4) | 222 km | 6.8 mww |
91.22458 | 71.4 deg | 258.303 deg | Mindanao, Philippines | 2023/12/02 14:37:03 GMT | (8.5, 126.4) | 33 km | 7.6 mww |
87.93404 | 72.9 deg | 233.013 deg | Eastern New Guinea Reg., P.N.G. | 2023/10/07 08:40:13 GMT | (-5.5, 146.2) | 74 km | 6.7 Mww |
84.49757 | 62.1 deg | 272.38 deg | Taiwan | 2024/04/02 23:58:11 GMT | (23.8, 121.6) | 35 km | 7.4 mww |
84.24978 | 73.2 deg | 236.579 deg | New Guinea, Papua New Guinea | 2024/03/23 20:22:07 GMT | (-4.1, 143.0) | 64 km | 7.0 Mi |
81.84304 | 73.0 deg | 233.001 deg | Eastern New Guinea Reg., P.N.G. | 2023/10/07 08:34:26 GMT | (-5.6, 146.1) | 53 km | 6.7 mww |
81.81776 | 87.7 deg | 74.806 deg | Near Coast Of Venezuela | 2024/06/23 03:58:00 GMT | (10.8, -62.6) | 87 km | 6.0 mww |
81.78381 | 54.2 deg | 244.254 deg | Mariana Islands | 2024/04/02 09:54:09 GMT | (15.8, 146.9) | 10 km | 6.2 mww |
81.14458 | 71.0 deg | 258.416 deg | Mindanao, Philippines | 2023/12/03 19:49:36 GMT | (9.0, 126.6) | 29 km | 6.9 Mww |
80.25678 | 71.0 deg | 228.262 deg | New Britain Region, P.N.G. | 2024/04/14 20:56:28 GMT | (-5.8, 151.1) | 49 km | 6.5 mww |
Losers
(45 events)Radial Match | Distance | Baz | FERegion | Time | Lat/Lon | Depth | Magnitude | Reason |
91.47463 | 71.0 deg | 258.119 deg | Mindanao, Philippines | 2023/12/03 10:58:38 GMT | (8.8, 126.9) | 44 km | 5.5 mb | |
77.56898 | 74.3 deg | 190.906 deg | Tonga Islands | 2024/05/26 20:47:09 GMT | (-19.4, -174.9) | 112 km | 6.6 mww | |
74.717064 | 51.4 deg | 248.594 deg | Mariana Islands | 2023/11/24 09:05:03 GMT | (20.2, 145.5) | 16 km | 6.9 mww | |
74.62915 | 52.7 deg | 247.362 deg | Mariana Islands | 2024/01/20 15:48:41 GMT | (18.5, 145.6) | 195 km | 6.1 mww | |
73.18984 | 88.0 deg | 193.079 deg | South Of Kermadec Islands | 2023/09/08 09:09:58 GMT | (-32.7, -179.3) | 90 km | 6.6 mww | |
72.76203 | 73.9 deg | 255.153 deg | Talaud Islands, Indonesia | 2023/09/26 01:39:44 GMT | (4.7, 127.5) | 100 km | 5.9 mww | |
70.20427 | 75.8 deg | 254.334 deg | Northern Molucca Sea | 2024/04/09 09:48:01 GMT | (2.7, 127.1) | 35 km | 6.6 mww | |
65.9134 | 70.4 deg | 191.858 deg | Tonga Islands | 2024/02/18 06:06:54 GMT | (-15.3, -175.3) | 10 km | 5.5 Mww | |
65.432045 | 86.7 deg | 192.55 deg | Kermadec Islands Region | 2024/05/12 18:43:20 GMT | (-31.5, -178.5) | 23 km | 5.8 Mww | |
64.81825 | 73.7 deg | 191.593 deg | Tonga Islands | 2023/12/11 06:33:31 GMT | (-18.7, -175.5) | 238 km | 6.1 Mww | |
63.397755 | 65.9 deg | 269.511 deg | Philippine Islands Region | 2023/09/12 11:03:18 GMT | (19.3, 121.2) | 41 km | 6.3 Mww | |
63.396225 | 73.9 deg | 191.232 deg | Tonga Islands | 2024/01/18 22:12:20 GMT | (-18.9, -175.1) | 218 km | 6.4 Mww | |
62.923332 | 51.4 deg | 252.709 deg | Volcano Islands, Japan Region | 2024/02/12 11:19:36 GMT | (22.0, 142.7) | 250 km | 6.1 mww | |
61.935825 | 52.6 deg | 247.896 deg | Mariana Islands | 2023/11/19 04:01:36 GMT | (18.8, 145.3) | 598 km | 5.9 mww | |
61.907925 | 78.5 deg | 205.761 deg | Vanuatu Islands | 2023/12/07 12:56:30 GMT | (-20.7, 169.2) | 48 km | 7.1 Mww | |
61.105785 | 84.4 deg | 192.961 deg | Kermadec Islands, New Zealand | 2024/05/17 20:58:27 GMT | (-29.1, -178.5) | 196 km | 5.8 Mww | |
60.846603 | 61.9 deg | 272.467 deg | Taiwan | 2024/04/03 00:11:25 GMT | (24.1, 121.7) | 13 km | 6.4 Mww | |
60.552948 | 85.1 deg | 191.973 deg | Kermadec Islands, New Zealand | 2023/10/23 10:10:15 GMT | (-29.9, -177.5) | 23 km | 6.0 Mww | |
60.33031 | 84.0 deg | 191.545 deg | Kermadec Islands Region | 2024/05/31 15:54:41 GMT | (-29.0, -176.9) | 20 km | 6.2 mww | |
59.715443 | 82.8 deg | 323.518 deg | Northwestern Afghanistan | 2023/10/07 06:41:02 GMT | (34.6, 61.9) | 10 km | 6.2 mww | |
58.983772 | 48.7 deg | 260.344 deg | Bonin Islands, Japan Region | 2024/04/27 08:35:34 GMT | (27.8, 139.6) | 503 km | 6.5 mww | |
58.94353 | 67.6 deg | 96.682 deg | Near Coast Of Chiapas, Mexico | 2024/05/12 11:39:14 GMT | (14.5, -92.4) | 75 km | 6.4 mww | |
58.87147 | 56.4 deg | 104.142 deg | Near Coast Of Jalisco, Mexico | 2023/09/08 16:37:17 GMT | (19.5, -104.9) | 45 km | 5.7 mww | |
57.819954 | 72.2 deg | 235.924 deg | Near N Coast Of New Guinea, P.N.G. | 2023/11/27 21:46:41 GMT | (-3.6, 144.0) | 8.0 km | 6.5 Mww | |
57.576046 | 69.4 deg | 225.563 deg | Solomon Islands | 2024/06/09 16:28:38 GMT | (-5.4, 154.1) | 125 km | 5.7 Mww | |
57.378212 | 96.0 deg | 264.476 deg | Java, Indonesia | 2024/04/27 16:29:51 GMT | (-8.1, 107.3) | 68 km | 6.1 mww | |
56.551537 | 80.3 deg | 199.233 deg | South Of Fiji Islands | 2023/09/05 00:55:24 GMT | (-23.9, 175.5) | 12 km | 5.7 Mww | |
56.006824 | 73.1 deg | 195.227 deg | Fiji Islands Region | 2023/10/31 11:10:56 GMT | (-17.5, -179.0) | 548 km | 6.4 mww | |
55.9225 | 71.4 deg | 190.21 deg | Tonga Islands | 2024/06/18 06:40:36 GMT | (-16.5, -173.8) | 35 km | 5.9 mww | |
55.608913 | 46.7 deg | 261.8 deg | Southeast Of Honshu, Japan | 2023/10/04 00:13:45 GMT | (30.0, 140.1) | 10 km | 5.5 Mww | |
55.465435 | 70.2 deg | 260.709 deg | Leyte, Philippines | 2024/05/03 10:16:23 GMT | (10.9, 125.3) | 7.9 km | 5.7 Mww | |
53.768723 | 73.4 deg | 256.322 deg | Mindanao, Philippines | 2024/03/08 09:11:46 GMT | (5.8, 126.9) | 125 km | 6.0 mww | |
51.03964 | 53.6 deg | 108.007 deg | Revilla Gigedo Islands Region | 2023/11/24 19:26:03 GMT | (19.9, -109.3) | 10 km | 5.5 mww | |
48.279766 | 75.4 deg | 254.424 deg | Talaud Islands, Indonesia | 2024/06/15 13:08:12 GMT | (3.2, 127.3) | 28 km | 5.6 mww | |
48.130844 | 74.3 deg | 92.89 deg | Nicaragua | 2024/04/17 21:21:54 GMT | (11.1, -85.3) | 154 km | 5.5 mww | |
46.2008 | 91.1 deg | 325.359 deg | Southern Iran | 2023/10/17 05:10:03 GMT | (27.7, 56.1) | 10 km | 5.5 mww | |
46.071186 | 62.1 deg | 272.409 deg | Taiwan | 2024/04/22 18:32:48 GMT | (23.9, 121.6) | 10 km | 6.1 Mww | |
43.548717 | 74.0 deg | 208.619 deg | Vanuatu Islands | 2023/09/28 14:40:26 GMT | (-15.6, 167.7) | 126 km | 6.0 mww | |
41.463787 | 71.1 deg | 258.28 deg | Mindanao, Philippines | 2023/12/04 05:08:35 GMT | (8.8, 126.7) | 25 km | 5.7 mww | |
35.240284 | 71.0 deg | 258.537 deg | Mindanao, Philippines | 2023/12/05 00:34:27 GMT | (9.0, 126.5) | 20 km | 5.6 mb | |
32.885834 | 92.5 deg | 287.523 deg | Nicobar Islands, India Region | 2024/06/26 01:24:13 GMT | (8.1, 90.4) | 10 km | 5.6 mww | |
31.933907 | 88.2 deg | 250.063 deg | Timor Region | 2023/11/01 21:04:45 GMT | (-10.0, 123.7) | 28 km | 6.0 mww | |
31.36779 | 86.1 deg | 193.717 deg | Kermadec Islands Region | 2023/11/13 14:40:55 GMT | (-30.7, -179.7) | 435 km | 5.7 Mww | |
27.387165 | 81.2 deg | 247.005 deg | Banda Sea | 2023/11/11 06:41:51 GMT | (-5.7, 130.2) | 10 km | 5.7 mww | |
21.115404 | 70.6 deg | 211.341 deg | Santa Cruz Islands | 2024/06/17 14:09:44 GMT | (-11.5, 166.2) | 49 km | 5.6 mww |