Station AV ANNQ - Aniakchak Nanwaq, Alaska

Network: AV - Alaska Volcano Observatory

Nearby stations (2 deg radius)

Station Name (Lat, Lon) Start / End Elevation
ANNQ Aniakchak Nanwaq, Alaska (56.93, -158.11) 2022-07-27 / 2499-01-01 371 m
Crust2 Type:C3,continental shelf, 2 km seds.
Thickness Estimate:33 km
Thickness StdDev:4.5 km
Vp/Vs Estimate:1.84
Vp/Vs StdDev:0.09
Vs Estimate:3.338 km/s
Poisson's Ratio:0.29
Peak Value:0.03
Assumed Vp:6.134 km/s
Ps Weight:0.33333334
PpPs Weight:0.33333334
PsPs Weight:0.33333328
Residual Complexity:0.716
Nearby stations H: +-
(2.0 deg) Vp/Vs: +-

6 with match > 90% ( 5.6603775 %) and 17 with match > 80% ( 16.037735 %) out of 106.

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 33 km 1.84 6.134 km/s 3.338 km/s 0.29
Crust2.0 31 km 1.80 6.134 km/s 3.406 km/s 0.28 C3,continental shelf, 2 km seds.
Global Maxima 33 km 1.84 6.134 km/s 3.338 km/s 0.29 amp=0.026724096
Local Maxima 1 31 km 1.81 6.134 km/s 3.398 km/s 0.28 amp=0.023378102
Local Maxima 2 40 km 1.68 6.134 km/s 3.662 km/s 0.22 amp=0.019815732
Local Maxima 3 30 km 2.01 6.134 km/s 3.048 km/s 0.34 amp=0.014995914
Local Maxima 4 26 km 1.86 6.134 km/s 3.307 km/s 0.30 amp=0.012329634
Predicted Arrivals for vertical incidence
(zero ray parameter)
Ps4.54 SECOND
PpPs15.38 SECOND
PsPs/PpSs19.92 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

(17 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude
95.7672 55.9 deg 110.433 deg Near Coast Of Michoacan, Mexico 2022/09/19 18:05:09 UTC (18.2, -103.4) 10 km 7.5 Mi
94.48242 84.0 deg 208.918 deg Southeast Of Loyalty Islands 2023/05/20 01:51:01 UTC (-23.1, 170.4) 45 km 7.4 Mi
94.4064 77.2 deg 240.878 deg New Guinea, Papua New Guinea 2023/04/02 18:04:12 UTC (-4.3, 143.2) 74 km 7.3 Mi
91.69478 79.5 deg 258.698 deg Northern Molucca Sea 2023/01/18 06:06:11 UTC (2.7, 127.1) 29 km 7.0 mwc
91.573524 73.6 deg 196.574 deg Tonga Islands 2023/05/10 16:02:00 UTC (-15.6, -174.6) 210 km 7.6 mww
90.41619 76.9 deg 193.556 deg Tonga Islands Region 2022/11/11 10:48:45 UTC (-19.3, -172.1) 25 km 7.3 Mww
88.83968 86.2 deg 250.944 deg Tanimbar Islands Reg., Indonesia 2023/01/09 17:47:34 UTC (-7.1, 130.0) 95 km 7.6 mww
88.664314 76.9 deg 237.629 deg Eastern New Guinea Reg., P.N.G. 2023/10/07 08:34:26 UTC (-5.6, 146.1) 53 km 6.7 mww
87.39648 75.0 deg 223.357 deg Solomon Islands 2022/11/22 02:03:07 UTC (-9.8, 159.6) 14 km 7.0 Mww
86.93117 56.0 deg 109.821 deg Michoacan, Mexico 2022/09/22 06:16:11 UTC (18.4, -102.9) 61 km 6.8 mww
86.10649 76.8 deg 213.722 deg Vanuatu Islands 2023/07/26 12:44:35 UTC (-14.8, 167.9) 13 km 6.4 mww
85.717995 88.2 deg 197.079 deg Kermadec Islands, New Zealand 2023/04/24 00:41:54 UTC (-30.0, -177.9) 34 km 7.3 mww
83.657486 73.7 deg 270.312 deg Mindoro, Philippines 2023/06/15 02:19:25 UTC (13.8, 120.7) 124 km 6.2 mww
82.05601 65.1 deg 100.814 deg Guatemala 2023/05/17 23:02:00 UTC (15.1, -90.9) 256 km 6.4 mww
81.43256 65.9 deg 275.528 deg Taiwan 2022/09/18 06:44:15 UTC (23.1, 121.3) 10 km 7.2 Mi
80.84927 70.5 deg 294.557 deg Sichuan, China 2022/09/05 04:52:19 UTC (29.7, 102.3) 10 km 6.6 mww
80.53944 87.8 deg 197.943 deg Kermadec Islands, New Zealand 2023/03/04 06:41:22 UTC (-29.5, -178.8) 206 km 6.9 mww

Losers

(89 events)
Radial Match Distance Baz FERegion Time Lat/Lon Depth Magnitude Reason
88.967834 84.0 deg 208.668 deg Southeast Of Loyalty Islands 2023/05/19 02:57:07 UTC (-23.2, 170.7) 10 km 7.7 Mi
88.22185 88.1 deg 195.296 deg Kermadec Islands Region 2023/03/16 00:55:58 UTC (-30.2, -175.9) 10 km 7.1 Mi
87.93509 76.8 deg 237.64 deg Eastern New Guinea Reg., P.N.G. 2023/10/07 08:40:13 UTC (-5.5, 146.2) 74 km 6.7 Mww
86.36473 81.0 deg 197.218 deg South Of Fiji Islands 2023/06/15 18:06:29 UTC (-22.9, -176.6) 206 km 7.0 Mi
85.054855 59.8 deg 246.222 deg South Of Mariana Islands 2023/08/14 13:51:54 UTC (13.4, 147.5) 10 km 6.1 mww
84.7266 93.1 deg 262.412 deg Bali Sea 2023/08/28 19:55:31 UTC (-6.8, 116.5) 514 km 7.1 Mww
79.06936 69.0 deg 273.176 deg Philippine Islands Region 2023/09/12 11:03:18 UTC (19.3, 121.2) 41 km 6.3 Mww
77.39784 77.7 deg 92.63 deg Panama-Colombia Border Region 2023/05/25 03:05:34 UTC (8.9, -77.1) 10 km 6.6 Mi
76.83771 63.5 deg 103.564 deg Near Coast Of Chiapas, Mexico 2023/07/14 09:29:01 UTC (15.0, -93.9) 35 km 6.3 mww
76.34567 78.6 deg 199.377 deg Fiji Islands Region 2022/11/12 07:09:14 UTC (-20.1, -178.4) 587 km 7.0 mww
76.14158 73.8 deg 224.618 deg Solomon Islands 2023/03/27 22:19:15 UTC (-8.2, 158.9) 86 km 6.1 mww
75.80965 77.8 deg 260.983 deg Mindanao, Philippines 2023/10/04 11:21:48 UTC (5.3, 126.1) 122 km 6.4 mww
75.75309 77.6 deg 259.411 deg Talaud Islands, Indonesia 2023/09/26 01:39:44 UTC (4.7, 127.5) 100 km 5.9 mww
75.22517 76.4 deg 237.066 deg Eastern New Guinea Reg., P.N.G. 2023/03/14 00:49:08 UTC (-5.4, 146.9) 213 km 6.3 mww
74.06017 60.8 deg 273.801 deg Ryukyu Islands, Japan 2022/09/18 08:09:59 UTC (26.3, 126.0) 10 km 5.7 Mww
72.75655 75.9 deg 97.804 deg South Of Panama 2023/04/04 22:18:12 UTC (7.6, -82.3) 10 km 6.3 mww
70.7395 91.1 deg 197.746 deg South Of Kermadec Islands 2023/09/08 09:09:58 UTC (-32.7, -179.3) 90 km 6.6 mww
69.50172 78.1 deg 321.524 deg Hindu Kush Region, Afghanistan 2023/03/21 16:47:23 UTC (36.5, 71.0) 188 km 6.5 Mww
68.7116 80.6 deg 257.468 deg Halmahera, Indonesia 2023/09/11 12:51:34 UTC (1.1, 127.5) 163 km 6.0 mww
68.400024 73.7 deg 231.694 deg New Britain Region, P.N.G. 2023/09/28 19:21:17 UTC (-5.3, 152.8) 49 km 5.7 Mww
68.13723 75.8 deg 262.308 deg Mindanao, Philippines 2023/02/01 10:44:44 UTC (7.7, 126.1) 9.4 km 6.0 mww
67.95972 77.1 deg 237.811 deg Eastern New Guinea Reg., P.N.G. 2023/10/07 13:10:40 UTC (-5.7, 145.9) 38 km 5.7 mww
67.81766 57.6 deg 250.492 deg Mariana Islands 2023/07/25 10:35:18 UTC (17.1, 145.5) 373 km 5.6 mww
67.590546 75.0 deg 223.397 deg Solomon Islands 2022/11/22 02:13:03 UTC (-9.8, 159.6) 10 km 5.6 mb
66.550255 83.9 deg 260.495 deg Minahassa Peninsula, Sulawesi 2023/01/18 00:34:43 UTC (-0.0, 123.2) 147 km 6.1 mww
66.53862 76.5 deg 239.31 deg Near N Coast Of New Guinea, P.N.G. 2023/06/19 11:18:11 UTC (-4.5, 144.9) 21 km 5.9 Mww
66.24701 98.1 deg 280.746 deg Southern Sumatra, Indonesia 2023/04/22 21:17:46 UTC (-1.0, 98.5) 10 km 5.7 mww
66.21749 75.9 deg 320.566 deg Tajikistan-Xinjiang Border Reg. 2023/02/23 00:37:40 UTC (38.1, 73.2) 21 km 6.8 Mww
65.956825 71.1 deg 266.224 deg Philippine Islands Region 2023/04/04 12:54:32 UTC (13.8, 125.5) 15 km 6.2 mww
65.778656 68.5 deg 99.805 deg Off Coast Of Central America 2023/07/19 00:22:07 UTC (12.8, -88.1) 70 km 6.5 mww
65.56133 55.6 deg 110.379 deg Near Coast Of Michoacan, Mexico 2022/09/20 08:17:16 UTC (18.5, -103.5) 54 km 5.8 mww
64.434586 40.4 deg 273.015 deg Hokkaido, Japan Region 2023/08/11 00:14:32 UTC (41.1, 142.8) 30 km 5.9 mww
63.52737 54.0 deg 110.974 deg Near Coast Of Jalisco, Mexico 2023/09/08 16:37:17 UTC (19.5, -104.9) 45 km 5.7 mww
63.49778 77.3 deg 214.792 deg Vanuatu Islands 2023/01/11 08:39:53 UTC (-14.9, 166.7) 10 km 5.8 Mww
63.053535 72.9 deg 231.148 deg New Ireland Region, P.N.G. 2022/10/13 22:20:20 UTC (-4.8, 153.6) 71 km 6.4 mww
62.65631 76.8 deg 239.882 deg Near N Coast Of New Guinea, P.N.G. 2023/03/23 00:17:39 UTC (-4.4, 144.3) 132 km 5.7 mww
62.406944 80.2 deg 199.916 deg Fiji Islands Region 2023/08/02 01:32:35 UTC (-21.6, -179.3) 632 km 5.8 mww
62.337322 78.1 deg 197.659 deg Fiji Islands Region 2022/10/10 17:55:10 UTC (-20.0, -176.5) 11 km 5.5 Mww
62.199863 77.2 deg 241.435 deg New Guinea, Papua New Guinea 2023/05/02 20:09:59 UTC (-4.1, 142.7) 120 km 5.5 Mww
62.110256 48.0 deg 268.319 deg Southeast Of Honshu, Japan 2023/05/14 10:11:35 UTC (33.4, 139.3) 14 km 5.6 mww
61.96983 50.3 deg 264.848 deg Southeast Of Honshu, Japan 2023/10/05 01:59:58 UTC (30.0, 139.9) 10 km 6.1 mww
61.6035 74.4 deg 232.195 deg New Britain Region, P.N.G. 2023/06/05 15:41:40 UTC (-5.7, 152.0) 10 km 5.2 Mww
61.52059 78.4 deg 258.083 deg North Of Halmahera, Indonesia 2023/02/23 20:02:48 UTC (3.3, 128.1) 97 km 6.3 mww
61.40163 76.5 deg 196.67 deg Tonga Islands 2023/05/27 00:11:00 UTC (-18.5, -175.2) 215 km 6.0 mww
61.267082 79.0 deg 199.296 deg Fiji Islands Region 2023/02/27 06:40:59 UTC (-20.5, -178.4) 548 km 5.6 Mww
60.80063 84.3 deg 207.604 deg Southeast Of Loyalty Islands 2023/05/22 06:52:47 UTC (-23.7, 171.7) 30 km 5.5 Mww
60.078598 74.7 deg 234.835 deg Bismarck Sea 2023/03/01 05:36:14 UTC (-4.8, 149.6) 583 km 6.5 Mi
60.05022 82.7 deg 327.589 deg Northwestern Afghanistan 2023/10/07 07:40:29 UTC (34.6, 62.0) 7.7 km 5.9 mww
59.92493 77.3 deg 214.643 deg Vanuatu Islands 2023/01/08 12:32:42 UTC (-14.9, 166.9) 28 km 7.0 mww
58.958202 77.6 deg 213.655 deg Vanuatu Islands 2023/09/28 14:40:26 UTC (-15.6, 167.7) 126 km 6.0 mww
58.659878 75.8 deg 104.056 deg Off Coast Of Central America 2022/10/16 12:48:21 UTC (4.4, -87.5) 10 km 6.3 Mww
58.574253 76.1 deg 200.304 deg Fiji Islands Region 2023/06/20 19:59:15 UTC (-17.4, -178.8) 548 km 5.7 Mww
58.484238 85.7 deg 263.397 deg Minahassa Peninsula, Sulawesi 2023/09/09 14:43:24 UTC (0.0, 119.8) 9.9 km 6.0 mww
58.09861 75.8 deg 235.265 deg New Britain Region, P.N.G. 2022/09/02 22:39:51 UTC (-5.7, 148.7) 126 km 6.1 Mww
57.83679 87.9 deg 196.876 deg Kermadec Islands, New Zealand 2023/04/24 01:05:20 UTC (-29.7, -177.6) 35 km 5.5 mb
57.78604 46.0 deg 273.766 deg Near West Coast Of Honshu, Japan 2023/05/05 05:42:04 UTC (37.5, 137.3) 8.7 km 6.2 mww
56.56648 82.5 deg 270.194 deg South China Sea 2023/04/02 19:32:24 UTC (6.4, 115.8) 601 km 5.5 mb
56.528034 92.8 deg 260.069 deg Flores Sea 2023/04/02 08:40:54 UTC (-7.8, 118.7) 19 km 5.5 Mww
56.252747 45.6 deg 269.168 deg Near East Coast Of Honshu, Japan 2023/05/26 10:03:24 UTC (35.6, 140.7) 44 km 6.2 mww
56.163734 70.5 deg 272.819 deg Luzon, Philippines 2022/10/25 14:59:04 UTC (17.9, 120.6) 10 km 6.8 Mi
55.936626 82.7 deg 327.667 deg Northwestern Afghanistan 2023/10/07 06:41:02 UTC (34.6, 61.9) 10 km 6.2 mww
55.37664 75.7 deg 234.276 deg New Britain Region, P.N.G. 2023/04/19 09:06:03 UTC (-5.9, 149.6) 40 km 6.3 mww
55.31595 61.0 deg 274.506 deg Northeast Of Taiwan 2023/09/18 13:21:23 UTC (26.4, 125.3) 183 km 6.3 mww
55.194855 81.6 deg 196.443 deg Tonga Islands Region 2023/06/16 08:11:34 UTC (-23.6, -175.9) 22 km 6.0 mww
54.859062 98.1 deg 280.589 deg Southern Sumatra, Indonesia 2022/08/28 22:34:33 UTC (-1.0, 98.6) 12 km 5.8 Mww
54.636284 81.4 deg 196.049 deg Tonga Islands Region 2023/06/17 11:26:21 UTC (-23.4, -175.4) 35 km 6.0 Mww
54.596275 61.4 deg 249.39 deg Mariana Islands 2023/08/09 09:20:31 UTC (13.4, 144.3) 494 km 5.7 Mi
54.54049 95.5 deg 261.956 deg South Of Bali, Indonesia 2022/08/22 08:36:32 UTC (-9.1, 115.6) 141 km 5.5 Mww
54.289944 86.3 deg 251.43 deg Banda Sea 2023/05/24 15:49:34 UTC (-7.0, 129.5) 166 km 6.2 Mww
54.122837 77.6 deg 237.205 deg Eastern New Guinea Reg., P.N.G. 2023/02/04 12:22:36 UTC (-6.4, 146.2) 102 km 5.7 mww
53.33891 78.6 deg 54.729 deg Northern Mid-Atlantic Ridge 2023/03/21 20:41:08 UTC (28.6, -43.6) 10 km 5.5 Mww
52.821033 75.8 deg 196.281 deg Tonga Islands 2023/07/02 10:27:45 UTC (-17.9, -174.7) 247 km 6.7 Mi
52.725193 87.3 deg 103.09 deg Peru-Ecuador Border Region 2022/10/05 08:26:21 UTC (-4.9, -80.6) 48 km 5.8 Mww
52.63216 84.9 deg 251.805 deg Banda Sea 2023/08/29 04:34:42 UTC (-5.6, 130.0) 203 km 5.9 mww
51.424736 50.3 deg 264.789 deg Southeast Of Honshu, Japan 2023/10/05 02:06:32 UTC (29.9, 139.9) 10 km 5.4 Mww
51.07078 71.5 deg 265.626 deg Philippine Islands Region 2022/12/09 06:32:59 UTC (13.2, 125.8) 9.0 km 5.8 mww
50.543224 62.7 deg 102.586 deg Chiapas, Mexico 2023/08/09 09:33:26 UTC (16.2, -93.6) 111 km 5.8 mww
50.39139 94.9 deg 266.588 deg Java, Indonesia 2023/04/14 09:55:45 UTC (-6.0, 112.0) 594 km 7.0 mww
50.079006 38.9 deg 114.253 deg Baja California, Mexico 2022/11/22 16:39:05 UTC (30.8, -116.4) 10 km 6.2 Mww
49.62154 83.0 deg 341.981 deg Turkey-Iran Border Region 2023/01/28 18:14:44 UTC (38.4, 44.9) 10 km 5.9 mww
48.849266 80.9 deg 94.272 deg Colombia 2023/08/27 21:44:59 UTC (5.3, -76.7) 15 km 5.7 Mww
47.081074 59.5 deg 247.394 deg Mariana Islands 2023/03/01 19:28:07 UTC (14.1, 146.8) 9.9 km 5.5 Mww
45.151417 48.8 deg 270.396 deg Near S. Coast Of Honshu, Japan 2022/11/14 08:08:26 UTC (33.8, 137.3) 357 km 6.1 mww
45.095974 75.8 deg 323.546 deg Tajikistan 2023/03/22 20:07:44 UTC (39.5, 70.0) 5.6 km 5.9 mb
44.8248 80.0 deg 197.584 deg Fiji Islands Region 2022/08/28 18:48:01 UTC (-21.8, -176.8) 221 km 5.6 mww
37.11815 83.3 deg 209.309 deg Southeast Of Loyalty Islands 2022/11/17 11:21:30 UTC (-22.3, 170.2) 15 km 5.5 Mww
35.636868 84.2 deg 208.805 deg Southeast Of Loyalty Islands 2023/05/19 03:10:44 UTC (-23.3, 170.4) 19 km 5.7 mb
35.373734 74.8 deg 221.423 deg Solomon Islands 2023/05/21 15:45:13 UTC (-10.3, 161.4) 78 km 6.1 Mww
28.722582 79.2 deg 233.441 deg Eastern New Guinea Reg., P.N.G. 2023/07/06 20:04:08 UTC (-9.5, 148.8) 59 km 5.5 mb