Issued: September 23, 1997 Prepared by: Nan Macgregor-Scott No. 38 - 97 The following is a list of significant earthquakes during the time period September 15 - 21, 1997 September 15 at 02:06 UTC (06:06 pm ADT), ML 3.7, 60 N 20', 152 W 53', depth = 112 km (70 mi): A minor earthquake was located in the Cook Inlet region of Alaska about 46 mi ( 75 km) WNW of Ninilchik 50 mi ( 81 km) ENE of Port Alsworth 52 mi ( 84 km) W of Clam Gulch 54 mi ( 86 km) NW of Anchor Point 55 mi ( 89 km) W of Kasilof September 15 at 02:54 UTC (06:54 pm ADT), ML 3.5, 57 N 41', 152 W 48', depth = 49 km (30 mi): A minor earthquake was located in the Kodiak Island region of Alaska about 13 mi ( 21 km) S of Port Lions 17 mi ( 27 km) WSW of Kodiak 20 mi ( 33 km) SW of Ouzinkie 38 mi ( 61 km) NNE of Old Harbor 45 mi ( 72 km) ENE of Larsen Bay September 15 at 07:38 UTC (11:38 pm ADT), ML 3.9, 61 N 5', 150 W 37', depth = 46 km (28 mi): A minor earthquake, felt in Anchorage, was located in the Cook Inlet region of Alaska about 17 mi ( 28 km) E of Tyonek 26 mi ( 42 km) WSW of Anchorage 30 mi ( 49 km) WSW of Elmendorf AFB 34 mi ( 54 km) WSW of Fort Richardson 35 mi ( 56 km) WNW of Hope September 15 at 09:58 UTC (01:58 am ADT), ML 3.7, 59 N 54', 153 W 24', depth = 135 km (84 mi): A minor earthquake was located in the Cook Inlet region of Alaska about 26 mi ( 42 km) ENE of Pedro Bay 38 mi ( 61 km) ESE of Port Alsworth 50 mi ( 81 km) E of Nondalton 54 mi ( 86 km) ENE of Iliamna 54 mi ( 86 km) ENE of Newhalen September 15 at 20:45 UTC (12:45 pm ADT), mb 4.2, 51 N 15', 176 W 57', depth fixed at 33 km (21 mi): A light earthquake was located by NEIC in the Andreanof Islands region of Alaska about 45 mi ( 72 km) SSW of Adak 135 mi (216 km) WSW of Atka 177 mi (284 km) E of Amchitka 225 mi (362 km) WSW of Amukta Pass 315 mi (507 km) E of Buldir Is September 16 at 04:35 UTC (08:35 pm ADT), ML 3.8, 61 N 3', 147 W 34', depth = 30 km (18 mi): A minor earthquake was located in the Prince William Sound region of Alaska about 33 mi ( 53 km) WNW of Tatitlek 42 mi ( 67 km) W of Valdez 42 mi ( 68 km) ENE of Whittier 54 mi ( 87 km) E of Girdwood 64 mi (102 km) SE of Sutton September 17 at 14:25 UTC (06:25 am ADT), ML 4.6, 53 N 51', 164 W 56', depth = 57 km (36 mi): A light earthquake, felt at Akutan, was located in the Unimak Island region of Alaska about 39 mi ( 63 km) ESE of Akutan 65 mi (104 km) E of Dutch Harbor 66 mi (105 km) E of Unalaska 93 mi (149 km) SW of False Pass 128 mi (206 km) SW of Cold Bay September 17 at 16:40 UTC (08:40 am ADT), mb 4.5, 51 N 19', 176 W 18', depth fixed at 33 km (21 mi): A light earthquake was located by NEIC in the Andreanof Islands region of Alaska about 41 mi ( 67 km) SSE of Adak 109 mi (175 km) WSW of Atka 198 mi (318 km) WSW of Amukta Pass 204 mi (328 km) E of Amchitka 336 mi (540 km) WSW of Nikolski September 18 at 09:10 UTC (01:10 am ADT), mb 4.8, 51 N 5', 179 W 29', depth fixed at 33 km (21 mi): A light earthquake was located by NEIC in the Andreanof Islands region of Alaska about 73 mi (117 km) ESE of Amchitka 134 mi (215 km) WSW of Adak 216 mi (347 km) ESE of Buldir Is 240 mi (386 km) WSW of Atka 296 mi (477 km) ESE of Shemya Is September 18 at 09:18 UTC (01:18 am ADT), mb 4.9, 51 N 3', 179 W 32', depth fixed at 33 km (21 mi): A light earthquake was located by NEIC in the Andreanof Islands region of Alaska about 72 mi (115 km) ESE of Amchitka 137 mi (220 km) WSW of Adak 215 mi (345 km) ESE of Buldir Is 243 mi (391 km) WSW of Atka 295 mi (474 km) ESE of Shemya Is September 21 at 22:03 UTC (02:03 pm ADT), mb 5.0, 52 N 5', 170 W 41', depth fixed at 33 km (21 mi): A moderate earthquake was located by NEIC in the Fox Islands region of Alaska about 59 mi ( 95 km) ESE of Amukta Pass 97 mi (156 km) SW of Nikolski 150 mi (242 km) E of Atka 213 mi (343 km) SW of Unalaska 214 mi (345 km) SW of Dutch Harbor _____________________________________________________________________________________________________________________________________________________ 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 9 15 2 6 43.11 60 20.25N 152 52.82W 112.4 3.7 0.30 1.45 1.14 124 41 11 11 A E COOK INLET. 97 9 15 2 22 42.65 60 12.53N 151 17.80W 51.5 1.7 0.25 2.08 6.34 59 33 11 18 C E KENAI PEN. 97 9 15 2 54 2.18 57 40.74N 152 48.46W 48.8 3.5 0.17 7.35 8.89 177 25 7 20 C E KODIAK IS REG. 97 9 15 3 54 9.19 61 31.44N 146 32.99W 2.8 1.7 0.16 1.82 3.68 67 18 6 34 B E PR WILLIAM SOUND. 97 9 15 5 2 49.37 61 26.12N 150 36.87W 47.2 1.8 0.31 2.50 3.05 49 27 6 8 B E COOK INLET. 97 9 15 7 23 49.72 62 39.01N 150 34.03W 86.3 2.4 0.18 5.53 5.68 71 16 4 31 C E CENTRAL AK. 97 9 15 7 38 17.80 61 4.55N 150 37.04W 45.6 3.9 0.31 0.61 1.51 29 37 15 26 A E COOK INLET. 97 9 15 8 6 32.63 61 33.95N 146 23.45W 29.1 1.5 0.15 1.48 4.06 69 15 6 26 B E PR WILLIAM SOUND. 97 9 15 8 49 2.05 61 40.28N 151 57.40W 99.2 2.4 0.11 5.12 9.12 68 10 3 20 C E COOK INLET. 97 9 15 9 58 0.99 59 54.00N 153 23.99W 135.1 3.7 0.27 1.59 3.75 64 16 6 20 B E COOK INLET. 97 9 15 11 5 6.00 61 7.06N 150 40.45W 40.9 2.3 0.12 2.36 4.27 78 11 7 27 B E COOK INLET. 97 9 15 12 34 21.29 61 23.63N 149 21.22W 25.6 1.8 0.14 1.65 3.39 72 14 8 20 B E COOK INLET. 97 9 15 14 10 43.19 60 26.41N 150 3.50W 35.0 2.0 0.15 3.70 7.87 74 13 5 12 C E KENAI PEN. 97 9 15 15 38 2.22 60 7.60N 147 54.84W 16.4 1.6 0.12 5.20 5.61 108 14 10 10 C E PR WILLIAM SOUND. 97 9 15 16 5 36.15 62 4.74N 148 6.86W 36.5 1.4 0.10 4.51 7.88 56 15 6 32 C E CENTRAL AK. 97 9 15 18 53 30.57 61 42.43N 149 31.41W 39.0 1.7 0.10 2.93 4.06 66 10 8 20 B E COOK INLET. 97 9 15 20 45 19.06 51 15.42N 176 56.64W 33.0N 4.2mb R ANDREANOF ISLS. 97 9 15 20 47 20.46 60 56.47N 150 56.46W 18.1 1.6 0.21 5.40 10.10 76 11 4 27 D E KENAI PEN. 97 9 15 22 35 11.69 61 10.91N 150 55.02W 0.0 0.7 0.17 8.75 10.57 186 11 3 60 D E COOK INLET. 97 9 15 23 57 19.72 61 28.77N 152 0.69W 5.4 1.2 0.04 4.80 11.18 178 13 4 10 D E COOK INLET. 97 9 16 0 10 37.51 61 25.99N 146 40.11W 11.1 2.0 0.24 0.67 1.61 57 20 13 38 A E PR WILLIAM SOUND. 97 9 16 4 35 48.23 61 2.62N 147 34.36W 29.5 3.8 0.33 0.69 1.68 63 22 14 19 A E PR WILLIAM SOUND. 97 9 16 4 53 9.93 61 50.29N 148 20.56W 38.8 1.4 0.21 1.73 1.35 192 12 7 3 A E PR WILLIAM SOUND. 97 9 16 5 39 35.13 59 48.86N 153 0.93W 102.9 2.3 0.26 2.21 2.15 78 19 16 16 A E COOK INLET. 97 9 16 8 26 7.23 61 19.08N 147 14.99W 20.0 1.1 0.30 0.67 1.62 78 16 12 32 A E PR WILLIAM SOUND. 97 9 16 9 57 4.75 61 49.88N 149 44.52W 42.9 1.2 0.22 1.70 3.42 114 10 9 21 B E COOK INLET. 97 9 16 10 3 31.45 61 18.27N 147 14.62W 28.5 1.4 0.15 0.69 3.34 77 14 13 31 B E PR WILLIAM SOUND. 97 9 16 11 43 0.01 61 23.36N 149 21.40W 25.9 1.8 0.25 0.56 1.78 51 18 14 19 A E COOK INLET. 97 9 16 13 55 22.00 61 14.96N 150 19.51W 36.8 2.2 0.31 0.81 1.46 46 22 17 12 A E COOK INLET. 97 9 16 14 8 29.13 61 58.35N 148 9.06W 15.1 1.4 0.44 1.95 3.49 63 16 8 21 B E PR WILLIAM SOUND. 97 9 16 20 14 15.48 58 14.22N 155 10.53W 3.9 2.3 0.16 0.68 0.75 127 16 10 1 A a ALASKA PEN. 97 9 16 20 14 29.84 58 13.96N 155 9.87W 2.8 2.0 0.05 2.08 2.12 158 7 4 2 A a ALASKA PEN. 97 9 16 22 1 50.80 61 43.31N 151 47.90W 103.4 2.1 0.19 3.53 4.30 160 15 6 25 B E COOK INLET. 97 9 16 23 13 20.78 61 0.08N 151 24.86W 62.7 2.1 0.17 3.44 5.01 138 12 7 40 C E COOK INLET. 97 9 17 0 24 42.86 63 18.84N 149 26.77W 10.4 1.7 0.13 0.96 1.33 74 16 5 31 A E CENTRAL AK. 97 9 17 0 33 39.45 60 25.36N 152 30.19W 97.7 1.6 0.13 10.19 12.12 82 10 3 13 D E COOK INLET. 97 9 17 0 39 3.86 61 43.85N 149 27.11W 36.1 0.9 0.23 8.10 10.19 110 8 4 23 D E COOK INLET. 97 9 17 1 51 33.98 61 23.74N 146 36.76W 8.4 1.6 0.15 1.45 3.07 54 20 9 33 B E PR WILLIAM SOUND. 97 9 17 2 40 19.07 61 14.02N 146 54.39W 15.1 1.1 0.14 2.59 30.93 79 9 6 26 D E PR WILLIAM SOUND. 97 9 17 4 5 37.39 58 48.01N 154 46.58W 112.8 3.1 0.17 3.93 6.55 104 12 6 50 C E ALASKA PEN. 97 9 17 7 5 25.67 63 7.86N 149 9.23W 7.2 2.0 0.17 2.34 5.25 70 13 9 30 C E CENTRAL AK. 97 9 17 7 11 10.92 63 9.43N 149 10.37W 11.0 1.8 0.26 3.41 4.89 119 10 6 31 B E CENTRAL AK. 97 9 17 11 40 0.95 60 23.91N 152 10.44W 74.7 2.1 0.17 4.44 9.13 55 13 7 23 C E COOK INLET. 97 9 17 12 40 5.81 63 0.27N 151 0.92W 117.9 2.1 0.17 5.73 11.07 69 11 5 61 D E CENTRAL AK. 97 9 17 14 17 3.48 61 20.07N 150 53.85W 53.8 1.7 0.23 5.73 9.81 45 12 7 17 C E COOK INLET. 97 9 17 14 25 28.62 53 51.32N 164 56.10W 57.3 4.6 0.17 9.44 7.32 214 15 4 57 C E UNIMAK IS. 97 9 17 14 54 50.67 61 44.15N 151 35.69W 93.7 3.1 0.08 3.20 7.73 76 14 6 27 C E COOK INLET. 97 9 17 16 40 40.74 51 19.14N 176 18.30W 33.0N 4.5mb R ANDREANOF ISLS. 97 9 17 18 53 26.57 63 9.57N 148 17.10W 68.6 1.6 0.14 7.68 9.05 153 10 5 40 C E CENTRAL AK. 97 9 17 19 32 40.48 59 54.19N 141 44.13W 8.7 1.9 0.09 2.05 1.04 189 13 7 22 A E YAKUTAT BAY. _____________________________________________________________________________________________________________________________________________________ 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 9 17 21 54 32.05 60 48.05N 150 57.90W 44.8 1.9 0.30 7.29 13.75 77 10 4 16 D E KENAI PEN. 97 9 18 5 30 21.61 63 11.21N 151 27.01W 12.6 2.2 0.38 2.52 1.47 199 17 13 49 B E CENTRAL AK. 97 9 18 5 59 21.24 60 58.11N 150 14.68W 44.7 1.8 0.26 0.87 2.89 65 16 15 34 B E KENAI PEN. 97 9 18 6 22 10.39 63 30.97N 150 51.38W 10.2 1.3 0.10 3.61 2.91 156 8 4 5 B E CENTRAL AK. 97 9 18 8 30 10.19 62 51.07N 152 7.41W 10.2 2.5 0.33 1.93 2.09 90 18 13 99 A E CENTRAL AK. 97 9 18 8 30 41.15 60 6.31N 153 30.39W 151.3 3.2 0.22 2.33 2.32 87 26 16 21 A E COOK INLET. 97 9 18 9 10 33.29 51 5.22N 179 28.62W 33.0N 4.8mb R ANDREANOF ISLS. 97 9 18 9 18 31.73 51 3.48N 179 32.10W 33.0N 4.9mb R ANDREANOF ISLS. 97 9 18 16 22 22.87 61 19.53N 152 15.53W 3.1 0.5 0.10 0.97 2.03 165 11 9 7 A a COOK INLET. 97 9 18 22 25 56.05 61 19.75N 149 15.06W 29.5 1.3 0.23 1.23 2.84 93 15 9 19 B E COOK INLET. 97 9 18 22 50 31.95 59 53.98N 153 32.10W 137.1 2.6 0.14 4.37 2.75 133 16 10 27 B E COOK INLET. 97 9 19 2 58 11.12 62 2.54N 147 56.52W 30.5 1.3 0.33 7.08 11.49 124 12 6 33 D E CENTRAL AK. 97 9 19 5 55 1.54 61 42.55N 148 28.47W 3.2 1.5 0.20 1.41 2.54 84 15 9 13 B E PR WILLIAM SOUND. 97 9 19 8 33 44.26 63 15.55N 150 31.37W 129.6 2.1 0.08 6.45 8.89 99 10 4 24 C E CENTRAL AK. 97 9 19 11 2 51.41 66 9.53N 150 6.70W 19.2 2.4 0.37 8.57 21.14 149 15 3 129 D E N CENTRAL AK. 97 9 19 11 25 41.77 66 9.56N 147 33.01W 6.3 2.6 0.45 5.44 5.33 132 15 10 113 C E N CENTRAL AK. 97 9 19 13 56 55.84 61 18.03N 141 54.92W 8.8 1.2 0.27 1.90 1.72 138 11 5 38 A E CAPE YAKATAGA. 97 9 19 16 51 19.78 60 11.13N 150 50.85W 35.6 1.3 0.09 3.87 4.82 87 10 5 29 B E KENAI PEN. 97 9 19 19 26 11.08 60 8.68N 152 47.04W 102.0 3.0 0.24 1.83 2.91 61 41 8 12 B E COOK INLET. 97 9 19 20 2 33.45 59 58.25N 152 26.06W 72.7 1.9 0.22 4.45 8.74 54 15 5 32 C E COOK INLET. 97 9 19 20 39 49.55 61 54.77N 149 5.80W 14.8 1.4 0.16 2.92 1.39 108 12 4 18 B E COOK INLET. 97 9 19 23 29 27.72 62 8.84N 147 50.63W 51.0 1.9 0.24 3.89 8.24 89 18 8 44 C E CENTRAL AK. 97 9 20 6 53 15.36 59 52.66N 153 30.84W 129.9 2.8 0.23 2.04 1.74 136 23 11 26 A E COOK INLET. 97 9 20 10 53 33.43 61 20.78N 146 31.59W 17.7 0.9 0.18 30.55 73.38 135 5 5 26 D E PR WILLIAM SOUND. 97 9 20 10 53 38.97 53 56.96N 162 56.90W 0.0 2.9 0.19 9.99 8.58 248 18 10 93 C E SOUTH OF AK. 97 9 20 17 40 46.53 61 29.14N 151 53.09W 11.6 1.5 0.30 1.08 0.85 141 13 10 17 A E COOK INLET. 97 9 20 20 27 39.97 60 17.48N 153 41.78W 189.8 3.2 0.24 5.84 3.38 115 15 10 40 C E COOK INLET. 97 9 20 22 5 40.04 60 52.17N 149 16.67W 26.8 1.5 0.20 1.77 1.35 77 16 5 14 A E KENAI PEN. 97 9 20 23 13 18.24 61 36.99N 146 21.96W 41.2 1.3 0.07 3.04 6.75 184 5 6 27 C E PR WILLIAM SOUND. 97 9 20 23 13 24.84 59 55.34N 152 59.38W 98.2 1.8 0.19 1.53 2.37 91 13 9 6 A E COOK INLET. 97 9 21 2 9 22.12 59 52.15N 152 52.14W 97.6 2.1 0.11 4.46 5.32 48 14 6 15 C E COOK INLET. 97 9 21 2 11 31.27 61 49.60N 147 57.65W 32.7 1.3 0.11 5.76 4.21 104 10 4 20 C E PR WILLIAM SOUND. 97 9 21 2 18 15.24 62 14.04N 149 50.05W 0.0 1.7 0.26 2.72 3.23 61 12 4 30 B E CENTRAL AK. 97 9 21 2 21 23.29 64 8.74N 146 48.39W 12.7 2.5 0.21 2.88 3.28 90 16 11 30 B E CENTRAL AK. 97 9 21 4 25 31.19 61 34.51N 147 54.58W 33.4 0.9 0.12 4.70 14.48 87 10 4 34 D E PR WILLIAM SOUND. 97 9 21 11 36 31.41 64 47.71N 147 30.73W 15.3 1.2 0.11 3.44 4.26 95 10 6 19 B E CENTRAL AK. 97 9 21 11 52 45.14 63 15.45N 151 4.33W 21.8 2.5 0.28 5.62 10.66 101 15 8 103 D E CENTRAL AK. 97 9 21 12 30 46.84 60 5.43N 152 53.45W 105.4 2.0 0.20 11.31 12.70 78 11 3 4 D E COOK INLET. 97 9 21 13 24 15.80 64 2.70N 150 16.67W 11.5 1.7 0.26 4.24 6.84 138 14 5 42 C E CENTRAL AK. 97 9 21 14 13 21.85 60 58.87N 146 48.14W 21.3 2.1 0.27 1.43 1.62 62 17 8 14 A E PR WILLIAM SOUND. 97 9 21 14 43 19.83 61 38.40N 150 43.99W 55.3 2.4 0.20 3.80 5.22 72 14 8 20 C E COOK INLET. 97 9 21 16 5 35.41 64 23.72N 152 48.39W 0.0 2.4 0.48 5.96 6.32 122 15 6 121 C E CENTRAL AK. 97 9 21 17 30 56.22 60 28.33N 151 58.79W 80.1 1.9 0.37 9.34 15.63 62 10 3 26 D E KENAI PEN. 97 9 21 20 11 56.10 61 53.18N 149 37.74W 40.7 1.4 0.35 5.55 9.81 126 10 5 29 C E COOK INLET. 97 9 21 20 45 34.82 62 29.32N 151 27.45W 90.9 2.5 0.12 4.22 13.92 89 15 5 57 D E CENTRAL AK. 97 9 21 22 3 4.49 52 4.74N 170 40.80W 33.0N 5.0mb R FOX ISLS. 97 9 21 23 3 40.14 63 6.06N 150 19.69W 104.3 2.6 0.13 2.83 6.15 62 16 6 38 C E CENTRAL AK.