Station AV WESP - Westdahl Peak, Westdahl Peak, Alaska

Network: AV - Alaska Volcano Observatory

Nearby stations (2 deg radius)

Station Name (Lat, Lon) Start / End Elevation
WESP Westdahl Peak, Westdahl Peak, Alaska (54.49, -164.72) 2008-07-31 / 2499-01-01 937 m
Crust2 Type:C4,continental shelf, 3.5 km seds.
Thickness Estimate:32 km
Thickness StdDev:2.0 km
Vp/Vs Estimate:1.60
Vp/Vs StdDev:0.19
Vs Estimate:3.743 km/s
Poisson's Ratio:0.18
Peak Value:0.05
Assumed Vp:5.989 km/s
Ps Weight:0.33333334
PpPs Weight:0.33333334
PsPs Weight:0.33333328
Residual Complexity:0.737
Nearby stations H: +-
(2.0 deg) Vp/Vs: +-

5 with match > 90% ( 3.7313433 %) and 16 with match > 80% ( 11.940298 %) out of 134.

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 32 km 1.60 5.989 km/s 3.743 km/s 0.18
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 32 km 1.60 5.989 km/s 3.743 km/s 0.18 amp=0.048077606
Local Maxima 1 26 km 2.10 5.989 km/s 2.855 km/s 0.35 amp=0.02186552
Local Maxima 2 26 km 1.66 5.989 km/s 3.602 km/s 0.22 amp=0.016599435
Local Maxima 3 38 km 1.84 5.989 km/s 3.255 km/s 0.29 amp=0.01642638
Local Maxima 4 44 km 1.70 5.989 km/s 3.533 km/s 0.23 amp=0.01344076
Predicted Arrivals for vertical incidence
(zero ray parameter)
Ps3.18 SECOND
PpPs13.78 SECOND
PsPs/PpSs16.96 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

(16 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude
96.32913 72.9 deg 231.52 deg Eastern New Guinea Reg., P.N.G. 2022/09/10 23:46:55 UTC (-6.2, 146.5) 61 km 7.6 mww
94.51998 77.7 deg 191.198 deg South Of Fiji Islands 2023/06/15 18:06:29 UTC (-22.9, -176.6) 206 km 7.0 Mi
94.387665 77.9 deg 191.756 deg South Of Fiji Islands 2023/06/15 18:06:27 UTC (-23.0, -177.2) 167 km 7.2 Mww
92.60636 70.3 deg 190.118 deg Tonga Islands 2023/05/10 16:02:00 UTC (-15.6, -174.6) 210 km 7.6 mww
91.47432 73.8 deg 187.255 deg Tonga Islands Region 2022/11/11 10:48:45 UTC (-19.3, -172.1) 25 km 7.3 Mww
89.96348 58.8 deg 102.793 deg Near Coast Of Michoacan, Mexico 2022/09/19 18:05:09 UTC (18.2, -103.4) 10 km 7.5 Mi
89.078674 79.6 deg 201.743 deg Southeast Of Loyalty Islands 2022/05/26 15:38:03 UTC (-22.9, 172.0) 10 km 6.9 Mi
88.010735 72.8 deg 235.452 deg New Guinea, Papua New Guinea 2023/04/02 18:04:12 UTC (-4.3, 143.2) 74 km 7.3 Mi
87.68445 80.2 deg 202.896 deg Southeast Of Loyalty Islands 2023/05/19 02:57:07 UTC (-23.2, 170.7) 10 km 7.7 Mi
84.163025 89.0 deg 256.928 deg Bali Sea 2023/08/28 19:55:31 UTC (-6.8, 116.5) 514 km 7.1 Mww
84.10872 84.9 deg 191.445 deg Kermadec Islands, New Zealand 2023/04/24 00:41:54 UTC (-30.0, -177.9) 34 km 7.3 mww
83.189674 83.5 deg 247.38 deg Banda Sea 2021/12/29 18:25:51 UTC (-7.6, 127.6) 167 km 7.3 mww
82.61177 72.3 deg 256.027 deg Mindanao, Philippines 2021/08/11 17:46:14 UTC (6.5, 126.8) 50 km 7.2 Mi
82.512596 81.8 deg 245.584 deg Tanimbar Islands Reg., Indonesia 2023/01/09 17:47:34 UTC (-7.1, 130.0) 95 km 7.6 mww
82.18001 51.2 deg 245.541 deg Mariana Islands 2022/07/08 23:36:11 UTC (18.8, 146.8) 23 km 6.3 Mi
80.22315 84.5 deg 191.453 deg Kermadec Islands, New Zealand 2021/03/04 17:41:25 UTC (-29.6, -177.8) 56 km 7.4 mww

Losers

(118 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude Reason
95.20508 83.2 deg 190.562 deg Kermadec Islands Region 2021/03/04 20:25:06 UTC (-28.4, -176.6) 10 km 6.1 mb
87.71575 85.1 deg 191.347 deg Kermadec Islands, New Zealand 2021/06/20 17:05:48 UTC (-30.2, -177.8) 10 km 6.5 mww
81.10192 72.2 deg 208.737 deg Vanuatu Islands 2023/08/16 12:47:40 UTC (-13.9, 167.2) 193 km 6.5 Mww
79.31775 92.5 deg 94.213 deg Northern Peru 2021/11/28 10:52:14 UTC (-4.5, -76.7) 99 km 7.4 Mi
78.24574 66.8 deg 96.693 deg Near Coast Of Chiapas, Mexico 2023/07/14 09:29:01 UTC (15.0, -93.9) 35 km 6.3 mww
76.82002 84.5 deg 192.291 deg Kermadec Islands, New Zealand 2023/03/04 06:41:22 UTC (-29.5, -178.8) 206 km 6.9 mww
76.3171 80.2 deg 203.147 deg Southeast Of Loyalty Islands 2023/05/20 01:51:01 UTC (-23.1, 170.4) 45 km 7.4 Mi
74.79852 55.3 deg 241.106 deg South Of Mariana Islands 2023/08/14 13:51:54 UTC (13.4, 147.5) 10 km 6.1 mww
74.546425 72.8 deg 207.735 deg Vanuatu Islands 2023/07/26 12:44:35 UTC (-14.8, 167.9) 13 km 6.4 mww
74.30428 69.9 deg 265.616 deg Mindoro, Philippines 2023/06/15 02:19:25 UTC (13.8, 120.7) 124 km 6.2 mww
73.54701 76.7 deg 188.996 deg Tonga Islands Region 2021/09/05 17:51:42 UTC (-22.1, -174.2) 10 km 5.9 mww
73.52096 39.8 deg 267.652 deg Near East Coast Of Honshu, Japan 2022/03/16 14:36:33 UTC (37.7, 141.6) 63 km 7.3 mww
72.70362 71.9 deg 93.322 deg Off Coast Of Central America 2023/07/19 00:22:07 UTC (12.8, -88.1) 70 km 6.5 mww
72.56462 70.0 deg 265.541 deg Mindoro, Philippines 2021/07/23 20:48:57 UTC (13.7, 120.7) 110 km 6.7 mww
72.297035 74.1 deg 92.98 deg Near Coast Of Nicaragua 2021/11/09 06:25:17 UTC (11.2, -86.5) 35 km 6.2 mww
72.08498 87.8 deg 191.148 deg South Of Kermadec Islands 2022/08/14 13:44:22 UTC (-32.9, -178.0) 33 km 6.8 Mi
71.92963 79.9 deg 92.488 deg South Of Panama 2021/07/17 20:56:10 UTC (6.8, -82.7) 4.1 km 6.1 mww
71.68598 87.7 deg 191.978 deg South Of Kermadec Islands 2022/08/14 13:44:17 UTC (-32.7, -179.0) 10 km 6.4 Mww
71.23963 72.0 deg 231.557 deg Eastern New Guinea Reg., P.N.G. 2023/03/14 00:49:08 UTC (-5.4, 146.9) 213 km 6.3 mww
71.047905 68.0 deg 290.499 deg Sichuan, China 2022/09/05 04:52:19 UTC (29.7, 102.3) 10 km 6.6 mww
70.5738 72.7 deg 190.214 deg Tonga Islands 2022/06/04 13:07:25 UTC (-18.0, -175.0) 237 km 6.3 mww
70.31945 84.8 deg 191.124 deg Kermadec Islands, New Zealand 2021/08/31 02:52:49 UTC (-30.0, -177.5) 10 km 6.3 mww
69.86399 70.8 deg 217.516 deg Solomon Islands 2022/11/22 02:03:07 UTC (-9.8, 159.6) 14 km 7.0 Mww
69.60901 70.5 deg 266.866 deg Luzon, Philippines 2022/03/13 21:05:52 UTC (14.1, 119.4) 33 km 6.7 Mi
69.37252 58.9 deg 102.21 deg Michoacan, Mexico 2022/09/22 06:16:11 UTC (18.4, -102.9) 61 km 6.8 mww
68.15307 75.6 deg 78.618 deg Haiti Region 2021/08/15 03:20:45 UTC (18.4, -74.1) 12 km 5.8 mww
68.05518 90.1 deg 192.166 deg East Of North Island, N.Z. 2022/06/10 23:07:22 UTC (-35.1, -179.6) 10 km 5.6 mww
67.81116 46.1 deg 256.711 deg Bonin Islands, Japan Region 2022/06/21 07:14:54 UTC (28.0, 142.8) 10 km 5.9 mww
67.33261 73.8 deg 191.347 deg Fiji Islands Region 2021/04/24 00:23:36 UTC (-18.9, -176.2) 289 km 6.4 Mww
67.30784 77.1 deg 189.325 deg Tonga Islands Region 2021/08/14 09:50:13 UTC (-22.4, -174.6) 10 km 5.5 mww
67.1885 66.9 deg 267.979 deg Luzon, Philippines 2022/07/27 00:43:24 UTC (17.6, 120.8) 10 km 7.0 Mww
66.52054 73.2 deg 208.504 deg Vanuatu Islands 2021/08/18 10:10:05 UTC (-14.9, 167.1) 91 km 6.8 mww
65.73263 76.6 deg 191.791 deg Fiji Islands Region 2021/04/25 22:28:00 UTC (-21.7, -177.1) 234 km 6.4 Mww
65.68756 78.4 deg 203.904 deg Southeast Of Loyalty Islands 2022/09/14 11:04:07 UTC (-21.2, 170.1) 124 km 7.0 Mi
65.29717 61.8 deg 271.629 deg Taiwan 2022/06/20 01:05:07 UTC (23.7, 121.5) 8.0 km 5.9 mww
64.695076 75.7 deg 193.192 deg Fiji Islands Region 2021/07/17 03:23:47 UTC (-20.6, -178.4) 559 km 5.5 Mww
64.213646 73.1 deg 254.503 deg Philippine Islands Region 2021/01/21 12:23:05 UTC (5.0, 127.5) 96 km 7.0 mww
64.15876 78.5 deg 190.289 deg Tonga Islands Region 2023/06/18 15:04:49 UTC (-23.8, -175.7) 10 km 5.8 Mww
64.06031 61.6 deg 271.733 deg Taiwan 2021/04/18 14:14:36 UTC (23.9, 121.5) 10 km 5.8 mww
63.997864 54.6 deg 286.133 deg Northeastern China 2023/08/05 18:33:59 UTC (37.2, 116.4) 18 km 5.4 Mww
63.563526 58.4 deg 243.316 deg South Of Mariana Islands 2022/02/13 20:29:45 UTC (11.8, 144.3) 10 km 5.7 Mww
63.309628 79.5 deg 91.752 deg South Of Panama 2023/04/04 22:18:12 UTC (7.6, -82.3) 10 km 6.3 mww
63.288425 80.6 deg 195.417 deg South Of Fiji Islands 2023/04/28 03:13:43 UTC (-25.1, 178.5) 577 km 6.2 mb
62.96661 84.3 deg 247.322 deg Timor Region 2022/05/27 02:36:05 UTC (-8.3, 127.2) 51 km 6.1 Mww
62.84004 76.4 deg 253.641 deg Northern Molucca Sea 2022/08/14 02:47:46 UTC (1.8, 126.4) 30 km 5.7 mww
62.516823 81.1 deg 316.408 deg Southeastern Afghanistan 2022/06/21 20:54:36 UTC (33.1, 69.5) 10 km 5.9 mwb
62.2032 89.3 deg 284.179 deg Nicobar Islands, India Region 2021/08/04 17:57:39 UTC (8.8, 94.1) 5.0 km 5.5 Mww
62.14521 69.9 deg 265.468 deg Mindoro, Philippines 2021/08/13 15:08:32 UTC (13.7, 120.8) 129 km 5.8 mww
62.019127 68.5 deg 94.113 deg Guatemala 2023/05/17 23:02:00 UTC (15.1, -90.9) 256 km 6.4 mww
60.971775 79.8 deg 203.339 deg Southeast Of Loyalty Islands 2022/03/31 05:44:01 UTC (-22.7, 170.3) 10 km 7.2 Mi
60.885685 81.4 deg 86.731 deg Panama-Colombia Border Region 2023/05/25 03:05:34 UTC (8.9, -77.1) 10 km 6.6 Mi
60.873577 75.5 deg 193.276 deg Fiji Islands Region 2022/03/07 05:34:18 UTC (-20.4, -178.4) 582 km 6.1 mww
60.824615 64.5 deg 96.435 deg Oaxaca, Mexico 2022/03/06 03:29:21 UTC (17.0, -95.1) 98 km 5.5 mww
60.717907 72.3 deg 230.87 deg Eastern New Guinea Reg., P.N.G. 2022/08/13 18:57:16 UTC (-6.0, 147.3) 52 km 5.9 mww
60.650833 90.6 deg 97.628 deg Peru-Ecuador Border Region 2021/07/30 17:10:19 UTC (-4.9, -80.6) 33 km 6.2 Mww
60.559864 88.1 deg 134.461 deg Easter Island Region 2022/07/12 19:17:00 UTC (-22.6, -114.2) 10 km 6.4 mb
59.930428 73.2 deg 190.386 deg Tonga Islands 2023/05/27 00:11:00 UTC (-18.5, -175.2) 215 km 6.0 mww
59.776375 88.0 deg 284.928 deg Andaman Islands, India Region 2022/07/04 09:07:04 UTC (10.3, 94.2) 10 km 5.6 mb
59.58693 81.2 deg 248.283 deg Banda Sea 2021/04/03 18:42:01 UTC (-5.1, 128.1) 329 km 5.9 Mww
59.543743 73.8 deg 256.865 deg Mindanao, Philippines 2021/08/27 10:22:26 UTC (5.7, 125.2) 39 km 5.6 Mww
59.042233 51.9 deg 246.949 deg Mariana Islands 2021/06/21 01:44:11 UTC (18.9, 145.4) 227 km 5.5 mww
58.950382 81.0 deg 255.917 deg Minahassa Peninsula, Sulawesi 2021/07/26 12:09:06 UTC (-0.7, 121.9) 11 km 6.2 mww
58.785152 64.4 deg 301.532 deg Qinghai, China 2021/08/25 23:38:21 UTC (38.9, 95.6) 10 km 5.6 mb
58.570465 94.2 deg 261.111 deg Java, Indonesia 2023/06/30 12:57:42 UTC (-8.7, 110.0) 86 km 5.8 mww
58.482243 78.1 deg 191.491 deg South Of Fiji Islands 2021/08/17 17:24:47 UTC (-23.2, -177.0) 139 km 5.8 Mww
58.478535 51.9 deg 245.938 deg Mariana Islands 2022/06/08 00:58:00 UTC (18.4, 146.1) 138 km 5.4 Mww
58.190647 68.9 deg 227.146 deg New Britain Region, P.N.G. 2022/04/13 03:00:56 UTC (-4.5, 152.0) 147 km 5.9 mww
57.821415 34.4 deg 277.864 deg Hokkaido, Japan Region 2022/07/02 01:59:45 UTC (45.9, 142.1) 322 km 5.8 mww
57.462025 66.0 deg 95.691 deg Chiapas, Mexico 2023/08/09 09:33:26 UTC (16.2, -93.6) 111 km 5.8 mww
57.422268 75.7 deg 188.725 deg Tonga Islands 2021/09/20 18:34:48 UTC (-21.1, -173.8) 10 km 5.8 Mww
57.36973 79.3 deg 254.976 deg Minahassa Peninsula, Sulawesi 2022/06/07 13:24:13 UTC (0.1, 123.7) 132 km 5.6 mww
57.307114 70.0 deg 188.466 deg Samoa Islands Region 2022/12/04 19:24:15 UTC (-15.4, -173.0) 36 km 6.7 Mww
56.70593 53.3 deg 245.637 deg Mariana Islands 2023/07/25 10:35:18 UTC (17.1, 145.5) 373 km 5.6 mww
56.695496 73.5 deg 253.423 deg North Of Halmahera, Indonesia 2021/12/04 23:47:57 UTC (4.1, 128.1) 174 km 6.0 mww
56.66902 69.5 deg 218.778 deg Solomon Islands 2023/03/27 22:19:15 UTC (-8.2, 158.9) 86 km 6.1 mww
56.48387 36.3 deg 165.185 deg Hawaii 2021/10/10 21:48:36 UTC (18.8, -155.5) 35 km 6.2 Ml
55.828545 58.5 deg 102.717 deg Near Coast Of Michoacan, Mexico 2022/09/20 08:17:16 UTC (18.5, -103.5) 54 km 5.8 mww
55.77663 84.9 deg 189.652 deg Kermadec Islands Region 2023/03/16 00:55:58 UTC (-30.2, -175.9) 10 km 7.1 Mi
55.76333 70.2 deg 187.961 deg Samoa Islands Region 2022/12/04 19:24:27 UTC (-15.7, -172.5) 148 km 6.9 Mi
55.635963 70.3 deg 94.719 deg Near Coast Of Guatemala 2021/05/12 08:45:48 UTC (13.3, -90.2) 46 km 5.9 mww
55.61542 71.9 deg 231.254 deg Eastern New Guinea Reg., P.N.G. 2022/06/14 09:09:33 UTC (-5.5, 147.1) 186 km 5.6 Mww
55.614086 77.5 deg 317.03 deg Hindu Kush Region, Afghanistan 2023/03/21 16:47:23 UTC (36.5, 71.0) 188 km 6.5 Mww
54.67018 84.4 deg 192.279 deg Kermadec Islands, New Zealand 2021/01/08 00:28:49 UTC (-29.4, -178.8) 222 km 6.3 mww
54.605865 74.1 deg 252.98 deg North Of Halmahera, Indonesia 2023/02/23 20:02:48 UTC (3.3, 128.1) 97 km 6.3 mww
54.527874 51.1 deg 245.235 deg Mariana Islands Region 2022/07/10 22:19:59 UTC (18.8, 147.0) 10 km 5.6 mww
54.376865 70.0 deg 265.363 deg Mindoro, Philippines 2021/05/12 01:09:27 UTC (13.6, 120.8) 113 km 5.8 mww
54.213165 77.4 deg 199.801 deg Vanuatu Islands Region 2021/10/09 10:58:30 UTC (-21.2, 174.5) 520 km 6.9 mww
54.092327 59.3 deg 245.255 deg South Of Mariana Islands 2022/05/15 11:09:57 UTC (11.9, 142.4) 59 km 5.6 Mi
53.971817 73.4 deg 194.53 deg Fiji Islands Region 2021/12/26 15:42:56 UTC (-18.1, -179.4) 627 km 6.1 mww
53.90384 72.0 deg 231.366 deg Eastern New Guinea Reg., P.N.G. 2022/09/21 09:30:48 UTC (-5.5, 147.0) 210 km 5.7 Mww
53.75636 79.2 deg 194.33 deg South Of Fiji Islands 2020/12/14 01:57:10 UTC (-23.9, 179.9) 530 km 5.6 mww
53.56759 83.8 deg 190.451 deg Kermadec Islands Region 2023/06/14 16:53:52 UTC (-29.0, -176.6) 14 km 5.5 Mww
53.529404 79.7 deg 255.273 deg Minahassa Peninsula, Sulawesi 2023/01/18 00:34:43 UTC (-0.0, 123.2) 147 km 6.1 mww
53.195683 73.8 deg 192.587 deg Fiji Islands Region 2021/05/07 23:35:14 UTC (-18.8, -177.5) 384 km 6.1 Mww
53.11744 70.3 deg 95.647 deg Off Coast Of Central America 2023/07/30 01:10:29 UTC (12.7, -90.9) 10 km 5.7 Mww
52.945717 88.5 deg 8.064 deg Northern Algeria 2021/03/18 00:04:06 UTC (36.9, 5.2) 8.0 km 6.0 mww
52.90907 84.1 deg 348.083 deg Turkey 2022/11/23 01:08:15 UTC (40.8, 31.0) 10 km 6.1 Mww
52.634506 82.7 deg 256.809 deg Sulawesi, Indonesia 2023/02/27 01:26:03 UTC (-1.7, 120.2) 23 km 5.6 Mww
51.824463 73.2 deg 208.325 deg Vanuatu Islands 2023/01/10 05:24:48 UTC (-15.0, 167.2) 110 km 5.7 mww
51.668903 67.9 deg 232.259 deg Admiralty Islands Region, P.N.G. 2021/08/03 12:01:21 UTC (-1.5, 148.1) 10 km 5.5 Mww
51.568054 84.2 deg 249.458 deg Banda Sea 2022/08/17 12:56:32 UTC (-7.0, 125.5) 488 km 5.5 mww
51.1345 90.9 deg 261.032 deg Java, Indonesia 2023/04/14 09:55:45 UTC (-6.0, 112.0) 594 km 7.0 mww
50.600105 85.0 deg 191.195 deg Kermadec Islands, New Zealand 2021/06/20 17:24:34 UTC (-30.1, -177.6) 10 km 5.5 Mww
50.582222 79.3 deg 254.899 deg Minahassa Peninsula, Sulawesi 2021/07/09 13:31:09 UTC (0.1, 123.7) 118 km 5.6 mww
50.526203 33.8 deg 277.057 deg Hokkaido, Japan Region 2023/06/23 17:39:13 UTC (45.8, 143.1) 318 km 5.6 Mww
49.404938 75.5 deg 256.408 deg Celebes Sea 2021/04/10 09:30:44 UTC (4.1, 124.7) 311 km 6.1 mww
49.287334 79.4 deg 91.661 deg South Of Panama 2022/10/20 11:57:14 UTC (7.7, -82.3) 10 km 6.9 Mi
49.24193 76.8 deg 193.879 deg Fiji Islands Region 2023/08/02 01:32:35 UTC (-21.6, -179.3) 632 km 5.8 mww
48.02428 73.2 deg 193.387 deg Fiji Islands Region 2022/08/02 21:11:41 UTC (-18.1, -178.2) 521 km 5.6 Mww
46.710182 85.0 deg 191.292 deg Kermadec Islands, New Zealand 2022/03/02 12:52:07 UTC (-30.1, -177.7) 24 km 6.6 mww
46.171104 70.2 deg 229.263 deg Bismarck Sea 2023/03/01 05:36:14 UTC (-4.8, 149.6) 583 km 6.5 Mi
45.690804 74.0 deg 93.162 deg Near Coast Of Nicaragua 2021/11/09 02:53:49 UTC (11.2, -86.7) 17 km 5.9 mww
44.92985 86.8 deg 342.623 deg Turkey 2023/02/06 01:28:13 UTC (37.1, 37.2) 12 km 6.7 Mww
44.144257 76.0 deg 252.92 deg Halmahera, Indonesia 2022/05/08 21:51:41 UTC (1.8, 127.2) 56 km 5.5 mww
43.99359 69.9 deg 189.085 deg Tonga Islands 2020/11/07 09:27:04 UTC (-15.3, -173.6) 29 km 6.1 Mww
43.805103 85.2 deg 191.02 deg Kermadec Islands, New Zealand 2021/06/21 11:14:12 UTC (-30.3, -177.5) 27 km 6.0 mww
42.21113 80.1 deg 203.311 deg Southeast Of Loyalty Islands 2023/05/23 06:42:00 UTC (-23.0, 170.2) 18 km 5.9 mww
38.68235 81.4 deg 195.358 deg South Of Fiji Islands 2022/11/09 09:38:42 UTC (-26.0, 178.4) 629 km 6.8 mww