Station AV WESN - South, Westdahl Peak, Alaska

Network: AV - Alaska Volcano Observatory

Nearby stations (2 deg radius)

Station Name (Lat, Lon) Start / End Elevation
WESN South, Westdahl Peak, Alaska (54.58, -164.58) 2005-11-01 / 2499-01-01 549 m
Crust2 Type:C4,continental shelf, 3.5 km seds.
Thickness Estimate:57 km
Thickness StdDev:12 km
Vp/Vs Estimate:1.89
Vp/Vs StdDev:0.06
Vs Estimate:3.169 km/s
Poisson's Ratio:0.31
Peak Value:0.04
Assumed Vp:5.989 km/s
Ps Weight:0.33333334
PpPs Weight:0.33333334
PsPs Weight:0.33333328
Residual Complexity:0.822
Nearby stations H: +-
(2.0 deg) Vp/Vs: +-

1 with match > 90% ( 1.0204082 %) and 11 with match > 80% ( 11.22449 %) out of 98.

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 57 km 1.89 5.989 km/s 3.169 km/s 0.31
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 57 km 1.89 5.989 km/s 3.169 km/s 0.31 amp=0.04200374
Local Maxima 1 30 km 1.87 5.989 km/s 3.211 km/s 0.30 amp=0.03299747
Local Maxima 2 34 km 1.80 5.989 km/s 3.323 km/s 0.28 amp=0.017645843
Local Maxima 3 26 km 2.08 5.989 km/s 2.879 km/s 0.35 amp=0.014138488
Local Maxima 4 38 km 1.66 5.989 km/s 3.602 km/s 0.22 amp=0.010586249
Predicted Arrivals for vertical incidence
(zero ray parameter)
Ps8.47 SECOND
PpPs27.51 SECOND
PsPs/PpSs35.98 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

(11 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude
90.71941 70.4 deg 190.258 deg Tonga Islands 2023/05/10 16:02:00 UTC (-15.6, -174.6) 210 km 7.6 mww
89.32769 80.3 deg 203.019 deg Southeast Of Loyalty Islands 2023/05/19 02:57:07 UTC (-23.2, 170.7) 10 km 7.7 Mi
86.63626 78.0 deg 191.886 deg South Of Fiji Islands 2023/06/15 18:06:27 UTC (-23.0, -177.2) 167 km 7.2 Mww
86.23673 77.8 deg 191.328 deg South Of Fiji Islands 2023/06/15 18:06:29 UTC (-22.9, -176.6) 206 km 7.0 Mi
85.312584 73.9 deg 187.392 deg Tonga Islands Region 2022/11/11 10:48:45 UTC (-19.3, -172.1) 25 km 7.3 Mww
84.84529 85.0 deg 191.567 deg Kermadec Islands, New Zealand 2023/04/24 00:41:54 UTC (-30.0, -177.9) 34 km 7.3 mww
84.15063 92.4 deg 94.325 deg Northern Peru 2021/11/28 10:52:14 UTC (-4.5, -76.7) 99 km 7.4 Mi
83.468834 81.4 deg 86.859 deg Panama-Colombia Border Region 2023/05/25 03:05:34 UTC (8.9, -77.1) 10 km 6.6 Mi
82.8999 89.1 deg 257.043 deg Bali Sea 2023/08/28 19:55:31 UTC (-6.8, 116.5) 514 km 7.1 Mww
82.575455 61.8 deg 100.642 deg Near Coast Of Guerrero, Mexico 2021/09/08 01:47:46 UTC (17.0, -99.8) 13 km 7.0 mww
80.58757 85.2 deg 191.468 deg Kermadec Islands, New Zealand 2021/06/20 17:05:48 UTC (-30.2, -177.8) 10 km 6.5 mww

Losers

(87 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude Reason
87.269005 80.3 deg 203.271 deg Southeast Of Loyalty Islands 2023/05/20 01:51:01 UTC (-23.1, 170.4) 45 km 7.4 Mi
79.53691 72.9 deg 235.562 deg New Guinea, Papua New Guinea 2023/04/02 18:04:12 UTC (-4.3, 143.2) 74 km 7.3 Mi
78.24461 70.1 deg 265.629 deg Mindoro, Philippines 2021/07/23 20:48:57 UTC (13.7, 120.7) 110 km 6.7 mww
77.65916 71.8 deg 93.467 deg Off Coast Of Central America 2023/07/19 00:22:07 UTC (12.8, -88.1) 70 km 6.5 mww
77.37246 51.3 deg 245.623 deg Mariana Islands 2022/07/08 23:36:11 UTC (18.8, 146.8) 23 km 6.3 Mi
76.53981 79.4 deg 91.884 deg South Of Panama 2023/04/04 22:18:12 UTC (7.6, -82.3) 10 km 6.3 mww
76.32329 84.6 deg 192.413 deg Kermadec Islands, New Zealand 2023/03/04 06:41:22 UTC (-29.5, -178.8) 206 km 6.9 mww
74.76546 79.8 deg 92.619 deg South Of Panama 2021/07/17 20:56:10 UTC (6.8, -82.7) 4.1 km 6.1 mww
73.41062 81.1 deg 316.505 deg Southeastern Afghanistan 2022/06/21 20:54:36 UTC (33.1, 69.5) 10 km 5.9 mwb
72.5344 75.6 deg 193.408 deg Fiji Islands Region 2022/03/07 05:34:18 UTC (-20.4, -178.4) 582 km 6.1 mww
72.20157 66.7 deg 96.849 deg Near Coast Of Chiapas, Mexico 2023/07/14 09:29:01 UTC (15.0, -93.9) 35 km 6.3 mww
71.63945 72.1 deg 231.668 deg Eastern New Guinea Reg., P.N.G. 2023/03/14 00:49:08 UTC (-5.4, 146.9) 213 km 6.3 mww
71.345 79.9 deg 203.462 deg Southeast Of Loyalty Islands 2022/03/31 05:44:01 UTC (-22.7, 170.3) 10 km 7.2 Mi
71.300735 72.9 deg 207.862 deg Vanuatu Islands 2023/07/26 12:44:35 UTC (-14.8, 167.9) 13 km 6.4 mww
70.75179 70.9 deg 217.637 deg Solomon Islands 2022/11/22 02:03:07 UTC (-9.8, 159.6) 14 km 7.0 Mww
70.05515 75.5 deg 78.751 deg Haiti Region 2021/08/15 03:20:45 UTC (18.4, -74.1) 12 km 5.8 mww
69.79889 87.9 deg 191.267 deg South Of Kermadec Islands 2022/08/14 13:44:22 UTC (-32.9, -178.0) 33 km 6.8 Mi
69.66651 77.2 deg 189.457 deg Tonga Islands Region 2021/08/14 09:50:13 UTC (-22.4, -174.6) 10 km 5.5 mww
68.25802 61.8 deg 271.699 deg Taiwan 2022/06/20 01:05:07 UTC (23.7, 121.5) 8.0 km 5.9 mww
67.85959 46.2 deg 256.767 deg Bonin Islands, Japan Region 2022/06/21 07:14:54 UTC (28.0, 142.8) 10 km 5.9 mww
67.8145 87.8 deg 192.096 deg South Of Kermadec Islands 2022/08/14 13:44:17 UTC (-32.7, -179.0) 10 km 6.4 Mww
67.74945 73.3 deg 208.63 deg Vanuatu Islands 2021/08/18 10:10:05 UTC (-14.9, 167.1) 91 km 6.8 mww
67.676025 88.1 deg 134.581 deg Easter Island Region 2022/07/12 19:17:00 UTC (-22.6, -114.2) 10 km 6.4 mb
67.361565 75.8 deg 193.324 deg Fiji Islands Region 2021/07/17 03:23:47 UTC (-20.6, -178.4) 559 km 5.5 Mww
66.50241 84.9 deg 191.246 deg Kermadec Islands, New Zealand 2021/08/31 02:52:49 UTC (-30.0, -177.5) 10 km 6.3 mww
66.48077 70.5 deg 266.955 deg Luzon, Philippines 2022/03/13 21:05:52 UTC (14.1, 119.4) 33 km 6.7 Mi
65.838806 39.9 deg 267.672 deg Near East Coast Of Honshu, Japan 2022/03/16 14:36:33 UTC (37.7, 141.6) 63 km 7.3 mww
65.44433 90.5 deg 97.743 deg Peru-Ecuador Border Region 2021/07/30 17:10:19 UTC (-4.9, -80.6) 33 km 6.2 Mww
65.23122 47.4 deg 260.853 deg Bonin Islands, Japan Region 2023/01/16 04:49:52 UTC (29.0, 139.4) 405 km 6.3 mww
65.221275 79.4 deg 255.081 deg Minahassa Peninsula, Sulawesi 2022/06/07 13:24:13 UTC (0.1, 123.7) 132 km 5.6 mww
64.89693 76.8 deg 189.128 deg Tonga Islands Region 2021/09/05 17:51:42 UTC (-22.1, -174.2) 10 km 5.9 mww
63.720604 77.7 deg 252.913 deg Northern Molucca Sea 2021/06/03 10:09:55 UTC (0.3, 126.3) 9.9 km 6.1 Mww
63.289314 72.6 deg 93.641 deg Near Coast Of Nicaragua 2021/09/22 09:57:07 UTC (12.1, -87.8) 10 km 6.7 Mi
63.280384 79.6 deg 202.118 deg Southeast Of Loyalty Islands 2021/02/10 14:18:20 UTC (-22.7, 171.8) 10 km 5.6 mb
62.896885 72.8 deg 190.351 deg Tonga Islands 2022/06/04 13:07:25 UTC (-18.0, -175.0) 237 km 6.3 mww
62.539158 76.9 deg 194.01 deg Fiji Islands Region 2023/08/02 01:32:35 UTC (-21.6, -179.3) 632 km 5.8 mww
62.291664 81.1 deg 256.024 deg Minahassa Peninsula, Sulawesi 2021/07/26 12:09:06 UTC (-0.7, 121.9) 11 km 6.2 mww
62.23736 73.3 deg 190.522 deg Tonga Islands 2023/05/27 00:11:00 UTC (-18.5, -175.2) 215 km 6.0 mww
62.223427 92.7 deg 277.186 deg Northern Sumatra, Indonesia 2023/01/15 22:29:58 UTC (2.0, 98.0) 37 km 6.2 Mww
62.06628 95.7 deg 272.171 deg Southern Sumatra, Indonesia 2020/10/19 07:47:20 UTC (-3.4, 100.3) 10 km 5.5 Mww
61.39938 70.0 deg 265.704 deg Mindoro, Philippines 2023/06/15 02:19:25 UTC (13.8, 120.7) 124 km 6.2 mww
61.355675 72.7 deg 190.092 deg Tonga Islands 2023/07/02 10:27:45 UTC (-17.9, -174.7) 247 km 6.7 Mi
61.209267 74.0 deg 93.121 deg Near Coast Of Nicaragua 2021/11/09 06:25:17 UTC (11.2, -86.5) 35 km 6.2 mww
60.343407 85.1 deg 191.414 deg Kermadec Islands, New Zealand 2022/03/02 12:52:07 UTC (-30.1, -177.7) 24 km 6.6 mww
59.937588 77.5 deg 317.12 deg Hindu Kush Region, Afghanistan 2023/03/21 16:47:23 UTC (36.5, 71.0) 188 km 6.5 Mww
59.844467 70.0 deg 265.556 deg Mindoro, Philippines 2021/08/13 15:08:32 UTC (13.7, 120.8) 129 km 5.8 mww
59.570595 70.0 deg 265.774 deg Mindoro, Philippines 2020/12/24 23:43:42 UTC (13.8, 120.6) 114 km 6.3 Mww
59.391205 72.3 deg 208.863 deg Vanuatu Islands 2023/08/16 12:47:40 UTC (-13.9, 167.2) 193 km 6.5 Mww
59.13309 80.7 deg 195.543 deg South Of Fiji Islands 2023/04/28 03:13:43 UTC (-25.1, 178.5) 577 km 6.2 mb
59.04728 70.0 deg 226.8 deg New Britain Region, P.N.G. 2022/02/24 04:12:24 UTC (-5.6, 151.9) 35 km 5.3 Mww
58.543716 73.9 deg 256.963 deg Mindanao, Philippines 2021/08/27 10:22:26 UTC (5.7, 125.2) 39 km 5.6 Mww
58.455833 70.3 deg 95.796 deg Off Coast Of Central America 2023/07/30 01:10:29 UTC (12.7, -90.9) 10 km 5.7 Mww
57.985367 52.1 deg 246.021 deg Mariana Islands 2022/06/08 00:58:00 UTC (18.4, 146.1) 138 km 5.4 Mww
55.72168 73.9 deg 191.482 deg Fiji Islands Region 2021/04/24 00:23:36 UTC (-18.9, -176.2) 289 km 6.4 Mww
55.417625 73.2 deg 202.38 deg Fiji Islands Region 2021/06/19 11:59:05 UTC (-16.4, 173.1) 10 km 5.8 mww
55.265175 67.4 deg 225.679 deg New Ireland Region, P.N.G. 2021/04/07 05:13:16 UTC (-3.6, 154.0) 448 km 5.6 mww
54.8075 61.6 deg 271.802 deg Taiwan 2021/04/18 14:14:36 UTC (23.9, 121.5) 10 km 5.8 mww
54.622047 79.4 deg 255.004 deg Minahassa Peninsula, Sulawesi 2021/07/09 13:31:09 UTC (0.1, 123.7) 118 km 5.6 mww
54.483604 71.8 deg 208.753 deg Vanuatu Islands 2021/09/17 10:28:40 UTC (-13.4, 167.4) 10 km 5.8 mww
54.34051 94.3 deg 261.232 deg Java, Indonesia 2023/06/30 12:57:42 UTC (-8.7, 110.0) 86 km 5.8 mww
54.25996 75.3 deg 316.333 deg Tajikistan-Xinjiang Border Reg. 2023/02/23 00:37:40 UTC (38.1, 73.2) 21 km 6.8 Mww
53.829407 73.2 deg 254.602 deg Philippine Islands Region 2021/01/21 12:23:05 UTC (5.0, 127.5) 96 km 7.0 mww
53.539524 84.3 deg 249.569 deg Banda Sea 2022/08/17 12:56:32 UTC (-7.0, 125.5) 488 km 5.5 mww
53.51112 81.5 deg 195.483 deg South Of Fiji Islands 2022/11/09 09:38:42 UTC (-26.0, 178.4) 629 km 6.8 mww
52.55375 76.7 deg 191.922 deg Fiji Islands Region 2021/04/25 22:28:00 UTC (-21.7, -177.1) 234 km 6.4 Mww
52.167023 78.2 deg 191.62 deg South Of Fiji Islands 2021/08/17 17:24:47 UTC (-23.2, -177.0) 139 km 5.8 Mww
51.213287 82.0 deg 190.162 deg Kermadec Islands Region 2022/03/01 06:22:54 UTC (-27.2, -175.9) 10 km 5.8 mww
50.653057 66.0 deg 95.848 deg Chiapas, Mexico 2023/08/09 09:33:26 UTC (16.2, -93.6) 111 km 5.8 mww
50.442375 79.8 deg 255.378 deg Minahassa Peninsula, Sulawesi 2023/01/18 00:34:43 UTC (-0.0, 123.2) 147 km 6.1 mww
50.32209 90.2 deg 192.282 deg East Of North Island, N.Z. 2022/06/10 23:07:22 UTC (-35.1, -179.6) 10 km 5.6 mww
50.29843 74.3 deg 253.081 deg North Of Halmahera, Indonesia 2023/02/23 20:02:48 UTC (3.3, 128.1) 97 km 6.3 mww
50.04935 36.4 deg 165.44 deg Hawaii 2021/10/10 21:48:36 UTC (18.8, -155.5) 35 km 6.2 Ml
49.10374 70.0 deg 189.004 deg Tonga Islands 2020/10/25 11:47:37 UTC (-15.3, -173.3) 44 km 6.1 Mi
49.091106 73.3 deg 193.521 deg Fiji Islands Region 2022/08/02 21:11:41 UTC (-18.1, -178.2) 521 km 5.6 Mww
48.768993 73.8 deg 238.62 deg Irian Jaya, Indonesia 2023/07/03 02:51:34 UTC (-3.7, 140.2) 13 km 5.4 Mww
47.398113 70.9 deg 233.673 deg Near N Coast Of New Guinea, P.N.G. 2021/04/10 11:38:32 UTC (-3.5, 145.7) 10 km 6.0 mww
45.429276 70.2 deg 94.867 deg Near Coast Of Guatemala 2021/05/12 08:45:48 UTC (13.3, -90.2) 46 km 5.9 mww
45.359043 84.5 deg 192.401 deg Kermadec Islands, New Zealand 2021/01/08 00:28:49 UTC (-29.4, -178.8) 222 km 6.3 mww
44.810364 88.1 deg 285.041 deg Andaman Islands, India Region 2022/07/04 09:07:04 UTC (10.3, 94.2) 10 km 5.6 mb
44.72562 75.6 deg 256.509 deg Celebes Sea 2021/04/10 09:30:44 UTC (4.1, 124.7) 311 km 6.1 mww
44.281517 77.5 deg 199.928 deg Vanuatu Islands Region 2021/10/09 10:58:30 UTC (-21.2, 174.5) 520 km 6.9 mww
43.265488 75.3 deg 193.381 deg Fiji Islands Region 2022/11/12 07:09:14 UTC (-20.1, -178.4) 587 km 7.0 mww
41.792274 77.2 deg 199.621 deg Vanuatu Islands Region 2021/10/02 06:29:16 UTC (-20.9, 174.9) 486 km 7.2 Mi
41.383244 70.7 deg 216.766 deg Solomon Islands 2021/05/21 01:37:36 UTC (-9.9, 160.4) 16 km 5.4 Mww
40.845154 80.3 deg 202.923 deg Southeast Of Loyalty Islands 2023/05/19 07:13:39 UTC (-23.2, 170.8) 10 km 5.5 mb
40.527523 85.1 deg 191.316 deg Kermadec Islands, New Zealand 2021/06/20 17:24:34 UTC (-30.1, -177.6) 10 km 5.5 Mww
39.555958 86.8 deg 342.733 deg Turkey 2023/02/06 01:28:13 UTC (37.1, 37.2) 12 km 6.7 Mww