Issued: October 28, 1997 Prepared by: Lalitha Rao No. 43- 97 The following is a list of significant earthquakes during the time period October 20 - 26, 1997 October 22 at 17:17 UTC (09:17 am ADT), ML 4.3, 66 N 19', 154 W 28', depth = 16 km (10 mi): A light earthquake felt in Hughes, was located in the north-central region of Alaska about 20 mi ( 33 km) NNW of Hughes 53 mi ( 86 km) WSW of Allakaket 70 mi (112 km) NE of Huslia 78 mi (125 km) ESE of Kobuk 84 mi (134 km) ESE of Shungnak October 23 at 06:26 UTC (October 22,10:26 pm ADT), ML 4.4, 61 N 21', 150 W 25', depth = 44 km (27 mi): A light earthquake felt in Anchorage and Palmer, was located in the Cook Inlet region of Alaska about 19 mi ( 31 km) WNW of Anchorage 22 mi ( 35 km) WNW of Elmendorf AFB 25 mi ( 40 km) WNW of Fort Richardson 28 mi ( 45 km) W of Eagle River 30 mi ( 48 km) SSW of Willow October 25 at 10:50 UTC (02:50 am ADT), mb 4.5, 51 N 56', 173 W 11', depth fixed at 33 km (21 mi): A light earthquake was located by NEIC in the Andreanof Islands region of Alaska about 47 mi ( 76 km) ESE of Atka 58 mi ( 93 km) WSW of Amukta Pass 149 mi (240 km) E of Adak 195 mi (314 km) WSW of Nikolski 308 mi (496 km) WSW of Unalaska _____________________________________________________________________________________________________________________________________________________ DATE TIME LATITUDE LONGITUDE DEPTH PREF. RMS SEH SEZ GAP PHASES MIN Q T REGION, OTHER MAGNITUDES, FELT REPORTS AND COMMENTS YR MO DY HR MN SEC DEG MIN DEG MIN KM MAG SEC. KM KM DEG P S DIS _____________________________________________________________________________________________________________________________________________________ 97 10 20 2 16 52.50 61 30.46N 151 57.40W 10.6 2.3 0.10 1.66 2.78 142 19 10 16 B E COOK INLET. 97 10 20 5 19 37.90 59 47.68N 151 30.07W 55.5 2.2 0.26 0.77 1.53 58 23 16 17 A E KENAI PEN. 97 10 20 5 27 48.77 61 51.26N 149 48.22W 35.8 2.0 0.33 1.02 2.34 111 16 14 23 A E COOK INLET. 97 10 20 8 20 4.48 63 1.47N 148 49.77W 73.6 2.6 0.23 2.66 4.21 83 17 9 41 B E CENTRAL AK. 97 10 20 8 31 52.07 60 2.98N 151 40.73W 50.8 2.4 0.35 0.74 1.77 52 28 20 22 A E KENAI PEN. 97 10 20 9 3 17.10 61 58.56N 148 46.89W 19.0 1.7 0.32 1.88 1.38 104 15 9 24 A E PR WILLIAM SOUND. 97 10 20 10 51 12.13 54 10.90N 164 33.98W 74.8 3.1 0.26 9.97 6.67 212 15 13 70 C E UNIMAK IS. 97 10 20 13 39 25.63 61 59.37N 149 23.95W 42.3 2.3 0.28 0.76 2.58 47 16 12 35 B E COOK INLET. 97 10 20 13 48 25.25 60 33.84N 150 10.33W 39.7 1.5 0.20 0.98 2.07 71 16 9 6 A E KENAI PEN. 97 10 20 18 4 49.62 59 21.42N 153 25.64W 0.0 -0.9 0.10 2.34 0.68 278 6 5 0 A a COOK INLET. 97 10 20 18 6 31.18 64 31.70N 147 43.57W 8.9 1.8 0.21 0.57 3.43 114 13 10 19 B E CENTRAL AK. 97 10 20 18 18 44.80 60 5.22N 153 5.39W 118.8 2.4 0.27 2.01 1.69 149 27 14 3 A E COOK INLET. 97 10 20 19 34 34.17 52 6.30N 170 45.48W 33.0N 3.8mb R FOX ISLS. 97 10 20 20 16 10.37 63 21.98N 149 47.03W 116.5 3.2 0.24 2.37 3.57 82 17 10 44 B E CENTRAL AK. 97 10 20 23 16 9.76 60 29.00N 152 42.18W 2.9 0.3 0.05 0.87 1.21 139 8 8 1 A a COOK INLET. 97 10 20 23 16 2.00 63 13.65N 151 28.63W 8.5 2.1 0.49 4.74 5.51 151 15 4 97 C E CENTRAL AK. 97 10 21 5 20 31.94 62 47.94N 149 23.36W 66.4 2.0 0.11 5.86 11.99 102 10 5 24 D E CENTRAL AK. 97 10 21 5 33 36.31 63 10.16N 149 22.02W 87.6 3.0 0.13 3.62 3.51 89 16 7 25 B E CENTRAL AK. 97 10 21 7 57 13.40 61 21.42N 146 51.98W 14.0 1.3 0.09 1.50 2.53 49 13 6 37 B E PR WILLIAM SOUND. 97 10 21 8 34 24.22 59 42.00N 153 21.14W 117.8 2.0 0.07 8.64 8.99 115 11 4 9 C E COOK INLET. 97 10 21 10 11 59.49 61 18.28N 147 26.67W 23.5 2.9 0.34 1.16 1.99 46 25 9 22 A E PR WILLIAM SOUND. 97 10 21 10 33 38.57 59 45.62N 153 29.96W 146.8 2.5 0.13 2.14 4.69 106 13 5 19 B E COOK INLET. 97 10 21 13 32 42.12 60 0.07N 151 38.33W 74.0 2.2 0.15 3.07 7.04 61 11 7 20 C E KENAI PEN. 97 10 21 16 54 24.35 59 44.04N 150 37.03W 38.5 1.8 0.12 8.63 7.67 179 15 5 16 C E KENAI PEN. 97 10 21 22 47 21.16 62 5.48N 149 0.01W 15.0 2.7 0.26 1.34 8.08 52 17 11 36 C E CENTRAL AK. 97 10 22 0 3 37.27 60 53.03N 147 28.95W 21.3 3.0 0.26 0.60 1.49 58 22 10 21 A E PR WILLIAM SOUND. 97 10 22 2 9 24.17 63 15.59N 150 34.14W 128.5 2.6 0.20 6.24 6.45 93 18 7 57 C E CENTRAL AK. 97 10 22 6 12 15.46 59 56.64N 151 53.83W 59.5 2.5 0.32 0.89 2.20 66 27 19 35 A E KENAI PEN. 97 10 22 6 32 8.23 60 14.11N 151 7.86W 54.8 3.0 0.25 0.57 2.03 67 37 24 23 A E KENAI PEN. 97 10 22 6 32 55.15 62 52.20N 150 9.21W 75.8 2.4 0.28 1.15 1.17 119 13 8 29 A E CENTRAL AK. 97 10 22 7 32 20.73 60 12.24N 141 5.87W 7.1 1.6 0.26 1.06 1.04 113 14 9 16 A E YAKUTAT BAY. 97 10 22 8 36 43.55 62 58.49N 151 22.46W 122.9 2.7 0.23 2.36 3.37 124 15 8 85 B E CENTRAL AK. 97 10 22 9 44 21.99 61 35.13N 150 2.00W 42.0 2.3 0.39 0.76 1.32 56 25 18 11 A E COOK INLET. 97 10 22 12 7 13.63 58 35.35N 143 39.55W 10.0G 2.4 0.21 20.23 31.13 268 16 3 155 D E GULF OF ALASKA. 97 10 22 15 22 40.71 61 29.54N 146 41.67W 12.1 2.6 0.27 0.64 1.18 53 21 15 41 A E PR WILLIAM SOUND. 97 10 22 17 17 20.60 66 19.23N 154 27.91W 15.8 4.3 0.37 8.16 2.01 238 17 7 45 C E N CENTRAL AK. 97 10 22 18 7 50.12 62 15.50N 151 12.61W 79.3 3.7 0.22 1.21 2.43 75 17 6 35 A E CENTRAL AK. 97 10 23 6 26 42.78 61 20.86N 150 24.73W 43.5 4.4 0.30 0.70 1.17 80 26 7 24 A E COOK INLET. 97 10 23 7 24 16.98 61 20.73N 150 25.02W 43.8 2.1 0.23 5.60 9.24 89 11 5 24 C E COOK INLET. 97 10 23 7 31 33.34 53 37.10N 165 9.39W 42.6 2.7 0.29 23.89 51.76 217 14 6 65 D E FOX ISLS. 97 10 23 9 54 17.57 61 51.64N 150 5.60W 3.6 1.4 0.27 5.35 5.88 104 13 5 26 C E COOK INLET. 97 10 23 11 35 39.72 60 43.78N 147 23.05W 10.0 1.6 0.25 2.43 4.62 72 20 7 23 B E PR WILLIAM SOUND. 97 10 23 13 18 52.30 61 49.08N 149 47.99W 42.9 1.4 0.13 5.79 8.96 89 10 6 19 C E COOK INLET. 97 10 23 15 42 14.49 63 13.62N 150 53.93W 15.3 2.4 0.18 6.89 4.64 97 17 6 70 C E CENTRAL AK. 97 10 23 17 22 36.87 64 26.85N 147 43.60W 17.7 1.9 0.17 1.26 2.63 48 16 8 18 B E CENTRAL AK. 97 10 23 17 27 47.73 54 7.41N 164 8.13W 10.2 2.1 0.23 15.35 35.27 209 12 4 66 D E UNIMAK IS. 97 10 23 18 3 4.74 60 56.59N 150 11.49W 37.5 2.9 0.16 1.40 3.83 40 32 10 25 B E KENAI PEN. 97 10 23 19 0 42.46 61 42.32N 150 57.07W 64.0 2.0 0.39 5.09 14.28 141 10 6 57 D E COOK INLET. 97 10 23 23 9 8.35 63 17.68N 151 20.92W 6.5 3.2 0.27 7.20 9.15 106 22 5 93 C E CENTRAL AK. 97 10 23 23 24 33.54 52 45.61N 162 4.30W 36.4 3.9 0.33 30.27 98.66 275 20 7 246 D E SOUTH OF AK. _____________________________________________________________________________________________________________________________________________________ DATE TIME LATITUDE LONGITUDE DEPTH PREF. RMS SEH SEZ GAP PHASES MIN Q T REGION, OTHER MAGNITUDES, FELT REPORTS AND COMMENTS YR MO DY HR MN SEC DEG MIN DEG MIN KM MAG SEC. KM KM DEG P S DIS _____________________________________________________________________________________________________________________________________________________ 97 10 23 23 28 37.43 61 23.61N 147 17.07W 27.8 2.7 0.32 0.74 3.91 54 20 9 35 B E PR WILLIAM SOUND. 97 10 24 0 48 7.17 61 22.05N 146 50.90W 19.8 1.2 0.24 0.80 1.77 59 15 6 38 A E PR WILLIAM SOUND. 97 10 24 2 18 57.01 60 26.77N 150 51.87W 6.2 1.8 0.30 0.63 1.13 66 20 8 39 A E KENAI PEN. 97 10 24 3 27 35.21 61 29.50N 146 41.02W 16.9 2.0 0.25 0.80 2.23 64 19 12 41 A E PR WILLIAM SOUND. 97 10 24 3 46 40.93 61 54.29N 149 50.45W 37.0 1.7 0.32 1.76 3.46 95 16 10 28 B E COOK INLET. 97 10 24 5 11 22.39 62 30.42N 151 12.11W 88.7 2.0 0.21 1.68 2.83 139 16 6 49 B E CENTRAL AK. 97 10 24 5 31 25.93 62 18.72N 147 51.33W 48.5 1.6 0.30 1.72 3.15 66 16 6 60 B E CENTRAL AK. 97 10 24 7 29 27.30 54 35.05N 163 29.49W 5.1 2.8 0.25 2.16 3.10 192 17 6 18 B a UNIMAK IS. 97 10 24 12 24 13.24 60 22.39N 147 37.05W 13.9 1.7 0.22 0.80 3.54 113 17 11 39 B E PR WILLIAM SOUND. 97 10 24 13 40 26.87 59 50.57N 152 56.66W 105.7 2.3 0.23 1.40 2.04 66 22 16 15 A E COOK INLET. 97 10 24 16 10 38.89 61 27.73N 152 2.11W 6.1 2.2 0.19 1.61 2.71 176 16 13 9 B E COOK INLET. 97 10 24 16 24 1.91 62 26.31N 148 53.83W 1.4 1.1 0.22 2.51 4.25 155 9 7 71 B E CENTRAL AK. 97 10 24 17 54 9.85 59 53.34N 153 11.59W 125.4 2.5 0.24 1.09 2.36 110 22 12 10 A E COOK INLET. 97 10 24 18 27 35.02 62 23.58N 148 31.20W 16.7 2.1 0.21 1.35 7.92 67 15 9 66 C E CENTRAL AK. 97 10 24 19 54 30.53 60 8.66N 153 24.76W 152.8 3.5 0.23 2.06 1.64 85 30 15 18 A E COOK INLET. 97 10 24 20 46 23.04 60 18.02N 152 35.29W 89.7 2.3 0.28 1.23 2.32 90 21 12 22 A E COOK INLET. 97 10 25 1 45 38.61 58 10.63N 155 16.73W 0.1 0.9 0.09 0.95 9.54 87 10 8 5 C a ALASKA PEN. 97 10 25 3 25 23.45 60 10.26N 152 18.89W 7.9 0.8 0.14 5.01 6.34 108 7 3 37 C E COOK INLET. 97 10 25 4 26 41.71 61 19.48N 141 24.63W 0.0 2.1 0.15 5.38 2.59 152 16 7 40 C E CAPE YAKATAGA. 97 10 25 6 23 29.03 61 37.63N 146 9.04W 42.1 1.6 0.18 2.85 2.96 68 16 4 19 B E PR WILLIAM SOUND. 97 10 25 9 33 11.88 60 25.38N 151 44.04W 54.0 2.0 0.18 3.97 12.71 58 12 3 41 D E KENAI PEN. 97 10 25 10 32 3.13 61 38.01N 147 4.06W 36.8 1.4 0.23 1.77 3.62 70 16 4 26 B E PR WILLIAM SOUND. 97 10 25 10 50 13.56 51 56.16N 173 10.68W 33.0N 4.5mb R ANDREANOF ISLS. 97 10 25 11 19 35.77 61 46.66N 148 58.06W 12.4 1.1 0.18 0.96 1.44 128 12 5 2 A E PR WILLIAM SOUND. 97 10 25 16 31 16.07 61 53.54N 148 39.16W 15.1 0.2 0.01 5.51 8.15 174 4 3 19 C E PR WILLIAM SOUND. 97 10 25 18 22 0.05 62 6.95N 148 52.22W 40.2 1.5 0.10 3.34 4.88 76 13 5 38 B E CENTRAL AK. 97 10 25 19 0 15.51 60 7.48N 152 43.30W 94.6 2.4 0.19 6.11 8.29 56 16 5 14 C E COOK INLET. 97 10 25 20 5 47.60 60 25.48N 142 58.78W 7.2 1.8 0.15 2.48 1.83 134 14 7 8 A E CAPE YAKATAGA. 97 10 25 21 30 9.46 64 23.87N 149 36.61W 14.0 2.1 0.22 2.98 3.60 143 13 8 26 B E CENTRAL AK. 97 10 26 0 32 30.65 61 1.02N 147 16.99W 20.9 3.5 0.29 0.57 1.40 55 19 13 18 A E PR WILLIAM SOUND. 97 10 26 3 50 46.72 62 52.65N 149 9.97W 72.5 2.0 0.28 2.87 3.63 91 13 8 26 B E CENTRAL AK. 97 10 26 5 4 0.13 59 33.85N 152 34.66W 78.9 2.3 0.12 1.24 3.60 79 17 10 38 B E COOK INLET. 97 10 26 6 14 8.53 61 8.93N 151 18.96W 64.2 2.7 0.27 1.37 3.05 71 16 7 40 B E COOK INLET. 97 10 26 9 18 27.14 61 19.63N 149 19.08W 36.8 0.9 0.13 2.46 2.13 139 9 5 16 A E COOK INLET. 97 10 26 14 16 2.28 60 57.84N 147 9.79W 27.2 1.7 0.34 1.02 1.06 53 16 9 10 A E PR WILLIAM SOUND. 97 10 26 14 17 32.63 60 55.72N 147 6.81W 28.9 2.8 0.32 0.80 0.96 51 18 11 6 A E PR WILLIAM SOUND. 97 10 26 21 2 51.49 60 57.63N 147 3.74W 20.7 2.2 0.38 0.82 1.52 54 20 15 9 A E PR WILLIAM SOUND. 97 10 26 21 31 50.13 60 13.35N 150 7.80W 28.4 1.5 0.19 1.96 7.10 110 17 8 40 C E KENAI PEN. 97 10 26 22 3 24.00 62 10.68N 149 39.90W 7.6 1.5 0.35 1.34 2.59 105 16 10 40 B E CENTRAL AK. 97 10 26 22 34 23.02 59 52.29N 152 22.74W 77.0 2.7 0.26 1.54 3.70 71 19 12 39 B E COOK INLET.