Issued: December 18, 1998 Prepared by: Nan Macgregor-Scott No. 49-52 The following is a list of significant earthquakes during the time period December 7 - 13, 1998 December 7 at 01:47 UTC (04:47 pm AST), mb 4.6, 52 N 13Õ, 169 W 29Õ, depth = 23 km (14 mi): A light earthquake was located by NEIC in the Fox Islands region of Alaska about 56 mi ( 90 km) SSW of Nikolski 107 mi (172 km) E of Amukta Pass 168 mi (271 km) SW of Unalaska 169 mi (273 km) SW of Dutch Harbor 200 mi (322 km) E of Atka December 8 at 00:21 UTC (03:21 pm AST), ML 3.5, 56 N 30Õ, 156 W 59Õ, depth = 77 km (48 mi): A minor earthquake was located in the Alaska Peninsula region of Alaska about 56 mi ( 91 km) ENE of Chignik 59 mi ( 95 km) E of Chignik Lagoon 71 mi (114 km) ESE of Port Heiden 77 mi (123 km) SSE of Pilot Point 93 mi (149 km) ENE of Perryville December 9 at 07:30 UTC (10:30 pm AST), ML 4.1, 54 N 1Õ, 162 W 59Õ, depth = 26 km (16 mi): A light earthquake was located in the Alaska Peninsula region of Alaska about 60 mi ( 97 km) SSE of False Pass 77 mi (124 km) SSW of King Cove 82 mi (131 km) S of Cold Bay 114 mi (184 km) E of Akutan 135 mi (218 km) SW of Sand Point December 10 at 07:15 UTC (10:15 pm AST), ML 3.6, 59 N 24Õ, 135 W 59Õ, depth = 21 km (13 mi): A minor earthquake was located in southeastern Alaska about 3 mi ( 5 km) W of Klukwan 22 mi ( 36 km) WNW of Haines 24 mi ( 39 km) W of Skagway 69 mi (111 km) N of Gustavus 85 mi (136 km) N of Elfin Cove December 11 at 20:09 UTC (11:09 am AST), mb 4.2, 52 N 19Õ, 179 W 43Õ, depth fixed at 33 km (21 mi): A light earthquake was located by NEIC in the Andreanof Islands region of Alaska about 78 mi (125 km) NE of Amchitka 134 mi (215 km) WNW of Adak 185 mi (298 km) E of Buldir Is 234 mi (377 km) W of Atka 262 mi (422 km) E of Shemya Is December 13 at 13:32 UTC (04:32 am AST), ML 3.6, 61 N 55Õ, 150 W 36Õ, depth = 49 km (31 mi): A minor earthquake was located in the Cook Inlet region of Alaska about 19 mi ( 31 km) E of Skwentna 22 mi ( 35 km) WNW of Willow 32 mi ( 52 km) SSW of Talkeetna 43 mi ( 70 km) WNW of Hatcher Pass 45 mi ( 72 km) WNW of Wasilla December 13 at 14:08 UTC (05:08 am AST), ML 3.7, 58 N 24Õ, 142 W 16Õ, depth = 10 km (6 mi): A minor earthquake was located beneath the Gulf of Alaska about 110 mi (177 km) SSW of Icy Bay 116 mi (186 km) S of Cape Yakataga 121 mi (194 km) SW of Yakutat 162 mi (261 km) ESE of Middleton Island 193 mi (311 km) SE of Cordova _____________________________________________________________________________________________________________________________________________________ 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 _____________________________________________________________________________________________________________________________________________________ 98 12 7 1 2 29.82 61 12.99N 146 49.93W 14.9 2.5 0.30 0.90 1.96 78 14 7 22 A E PR WILLIAM SOUND. 98 12 7 1 3 20.73 64 45.92N 149 5.04W 1.0 1.0 0.35 4.15 98.98 130 8 5 21 D E CENTRAL AK. 98 12 7 1 7 11.57 61 0.43N 146 26.99W 17.1 1.1 0.14 2.60 2.44 112 12 5 10 B E PR WILLIAM SOUND. 98 12 7 1 47 55.00 52 13.20N 169 29.40W 22.6 4.6mb R FOX ISLS. 98 12 7 4 47 3.63 61 37.38N 151 13.98W 0.0 1.0 0.11 13.55 17.08 146 5 3 54 D E COOK INLET. 98 12 7 5 10 2.34 61 4.33N 150 51.27W 36.9 2.1 0.22 3.21 4.26 78 11 5 15 B E COOK INLET. 98 12 7 7 24 9.91 62 33.36N 149 36.05W 7.8 1.9 0.24 2.40 4.79 65 13 3 38 B E CENTRAL AK. 98 12 7 12 32 17.53 64 29.86N 147 9.82W 12.8 1.4 0.09 5.86 8.80 100 8 4 14 C E CENTRAL AK. 98 12 7 14 59 10.80 60 17.67N 153 5.07W 130.7 2.0 0.15 12.65 11.18 84 11 3 22 D E COOK INLET. 98 12 7 17 9 44.14 60 12.04N 152 41.04W 96.2 1.9 0.17 6.51 5.61 61 15 4 20 C E COOK INLET. 98 12 8 0 21 9.85 56 29.96N 156 59.24W 77.1 3.5 0.10 25.86 29.12 208 17 5 80 D E ALASKA PEN. 98 12 8 4 47 18.83 61 2.39N 151 8.44W 54.1 2.4 0.15 2.94 8.01 69 14 7 16 C E COOK INLET. 98 12 8 7 21 14.18 60 49.74N 146 43.77W 18.1 1.3 0.13 1.92 3.88 69 13 6 13 B E PR WILLIAM SOUND. 98 12 8 10 59 37.82 63 15.37N 151 6.35W 0.0 1.3 0.10 4.88 22.31 210 9 4 34 D E CENTRAL AK. 98 12 8 11 55 3.49 63 43.12N 150 54.81W 24.2 0.9 0.16 33.43 17.30 267 4 2 18 D E CENTRAL AK. 98 12 8 12 11 31.27 54 48.47N 161 49.24W 8.5 2.3 0.20 3.07 5.28 183 17 5 33 C E ALASKA PEN. 98 12 8 12 15 31.95 63 44.49N 148 52.25W 111.6 1.9 0.16 3.84 6.44 69 16 5 3 C E CENTRAL AK. 98 12 8 13 19 49.03 60 8.74N 148 29.30W 0.0 0.6 0.14 19.29 18.65 145 5 3 37 D E KENAI PEN. 98 12 8 13 47 29.46 60 19.86N 147 17.50W 10.5 1.5 0.15 7.01 13.86 120 15 7 44 D E PR WILLIAM SOUND. 98 12 8 17 35 14.06 60 9.36N 147 57.72W 0.2 0.6 0.29 8.34 19.80 141 6 3 14 D E PR WILLIAM SOUND. 98 12 8 18 2 28.77 58 58.45N 154 21.04W 119.5 3.0 0.23 3.24 4.10 132 30 16 41 B E ALASKA PEN. 98 12 8 18 21 33.67 62 54.99N 149 36.26W 76.1 1.7 0.13 4.52 9.23 106 13 4 7 C E CENTRAL AK. 98 12 8 22 57 7.74 59 26.21N 152 13.72W 43.5 1.8 0.64 4.77 7.84 106 8 2 57 C E COOK INLET. 98 12 9 0 24 4.64 59 36.20N 152 3.24W 63.6 2.0 0.14 4.05 10.14 90 12 6 24 D E COOK INLET. 98 12 9 3 21 39.14 59 41.07N 153 44.42W 134.1 2.4 0.15 9.09 10.67 87 12 3 28 D E COOK INLET. 98 12 9 3 53 44.50 59 40.87N 152 49.03W 92.8 2.5 0.10 6.91 8.63 77 13 5 23 C E COOK INLET. 98 12 9 6 48 19.94 62 56.25N 150 41.66W 108.2 2.1 0.12 6.71 7.90 78 15 6 54 C E CENTRAL AK. 98 12 9 7 30 10.95 54 1.08N 162 58.64W 26.0 4.1 0.27 19.08 98.99 266 16 3 86 D E ALASKA PEN. 98 12 9 8 21 22.13 62 11.66N 150 17.55W 55.3 2.0 0.22 3.51 5.78 69 14 4 23 C E CENTRAL AK. 98 12 9 9 40 9.39 59 30.36N 152 43.96W 76.6 2.8 0.14 3.93 8.89 95 13 6 32 C E COOK INLET. 98 12 9 11 20 10.67 59 25.10N 153 9.91W 19.2 1.8 0.11 3.54 4.16 81 10 3 13 B E COOK INLET. 98 12 9 13 5 29.17 61 29.33N 151 10.86W 66.9 1.3 0.37 16.58 24.53 135 8 3 58 D E COOK INLET. 98 12 9 14 33 1.15 60 48.11N 146 42.09W 21.4 1.3 0.16 4.39 6.29 54 14 5 10 C E PR WILLIAM SOUND. 98 12 9 15 34 9.26 61 17.18N 146 46.63W 32.1 1.3 0.11 6.50 15.20 88 9 5 28 D E PR WILLIAM SOUND. 98 12 10 2 39 38.72 61 18.21N 146 52.67W 20.1 2.8 0.20 0.73 2.96 70 16 4 32 B E PR WILLIAM SOUND. 98 12 10 3 51 34.77 63 32.11N 150 36.62W 16.2 2.9 0.38 0.94 1.13 105 13 12 16 A E CENTRAL AK. 98 12 10 7 15 12.99 59 23.88N 135 58.72W 21.3 3.6 0.26 18.60 35.96 229 15 4 213 D E SOUTHEASTERN AK. 98 12 10 9 29 51.11 59 13.18N 153 17.12W 88.7 2.0 0.21 2.68 4.25 95 11 7 38 B E COOK INLET. 98 12 10 22 33 40.59 64 42.70N 149 4.00W 15.8 1.8 0.25 0.91 1.87 120 10 9 15 A E CENTRAL AK. 98 12 10 23 1 18.86 62 20.00N 148 39.27W 17.1 2.0 0.30 0.86 2.45 105 16 12 61 A E CENTRAL AK. 98 12 11 2 25 13.92 62 15.68N 149 45.13W 57.2 2.2 0.27 3.04 3.56 90 17 10 31 B E CENTRAL AK. 98 12 11 3 39 56.47 58 11.23N 155 15.87W 2.4 0.6 0.12 2.12 3.57 75 8 8 4 B a ALASKA PEN. 98 12 11 6 23 24.64 60 15.82N 151 33.86W 42.5 1.5 0.20 3.52 14.64 68 13 4 29 D E KENAI PEN. 98 12 11 7 1 58.41 61 23.24N 146 49.65W 29.0 1.2 0.14 3.25 15.89 53 15 7 39 D E PR WILLIAM SOUND. 98 12 11 7 9 18.25 62 56.36N 149 23.38W 82.7 2.2 0.10 3.24 7.39 60 15 7 13 C E CENTRAL AK. 98 12 11 7 23 38.26 62 54.41N 150 28.31W 97.2 2.3 0.13 3.85 8.58 96 15 5 43 C E CENTRAL AK. 98 12 11 8 54 34.22 59 58.77N 152 23.92W 84.9 2.4 0.18 3.28 5.23 53 14 8 33 C E COOK INLET. 98 12 11 20 9 39.90 52 18.90N 179 42.54W 33.0N 4.2mb R ANDREANOF ISLS. 98 12 12 1 37 5.23 54 52.77N 161 2.43W 41.5 2.7 0.40 1.63 4.82 187 14 12 59 B E ALASKA PEN. 98 12 12 3 20 40.78 60 57.42N 147 0.29W 20.7 2.1 0.34 0.76 1.54 52 19 10 10 A E PR WILLIAM SOUND. _____________________________________________________________________________________________________________________________________________________ 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 _____________________________________________________________________________________________________________________________________________________ 98 12 12 4 8 24.45 58 31.43N 153 35.95W 69.4 2.5 0.22 1.42 2.74 100 27 16 44 B E KODIAK IS REG. 98 12 12 12 47 45.03 61 6.38N 150 35.50W 39.4 2.6 0.21 2.15 4.26 121 15 13 54 B E COOK INLET. 98 12 12 13 31 23.47 61 57.89N 151 41.63W 107.3 2.1 0.19 3.38 5.62 173 15 10 89 C E COOK INLET. 98 12 12 13 43 12.71 62 57.44N 150 28.75W 94.8 2.1 0.18 2.05 3.66 137 16 8 43 B E CENTRAL AK. 98 12 12 14 34 22.62 61 22.43N 150 25.84W 45.5 1.7 0.27 2.22 5.00 127 15 9 43 C E COOK INLET. 98 12 12 14 41 55.76 64 38.28N 146 57.19W 7.5 2.0 0.12 1.33 5.22 146 14 6 25 C E CENTRAL AK. 98 12 12 15 0 1.55 64 51.87N 147 23.00W 16.4 1.5 0.20 1.04 2.10 108 9 6 14 A E CENTRAL AK. 98 12 12 15 12 19.08 62 59.27N 148 44.57W 72.6 2.1 0.19 3.17 4.65 61 16 10 45 B E CENTRAL AK. 98 12 12 16 25 55.66 61 7.66N 151 44.79W 84.8 3.0 0.15 4.94 7.45 45 19 8 51 C E COOK INLET. 98 12 12 18 48 56.42 60 56.38N 152 35.76W 140.2 2.9 0.13 6.26 4.97 119 19 10 39 C E COOK INLET. 98 12 12 19 39 20.38 61 4.52N 150 3.29W 44.4 2.0 0.25 2.63 3.64 105 18 13 33 B E COOK INLET. 98 12 12 20 38 55.22 59 43.76N 151 38.20W 47.0 3.0 0.29 1.76 4.02 50 24 19 8 B E KENAI PEN. 98 12 12 21 5 42.94 61 53.72N 149 10.58W 14.4 1.9 0.26 1.65 1.57 91 15 8 19 A E COOK INLET. 98 12 12 22 16 36.33 64 34.83N 147 51.58W 9.4 1.0 0.10 2.77 3.39 109 7 2 8 B E CENTRAL AK. 98 12 13 1 23 40.53 60 54.88N 147 45.98W 6.9 1.4 0.27 3.09 4.12 59 16 5 30 B E PR WILLIAM SOUND. 98 12 13 2 3 4.30 60 1.42N 151 52.50W 74.3 2.7 0.16 6.52 13.20 71 12 5 33 D E KENAI PEN. 98 12 13 3 5 12.95 60 54.89N 147 48.00W 8.7 2.2 0.36 1.07 1.15 60 18 7 30 A E PR WILLIAM SOUND. 98 12 13 4 50 49.76 60 57.39N 147 48.15W 4.9 1.7 0.24 1.61 1.97 58 17 5 25 A E PR WILLIAM SOUND. 98 12 13 6 34 16.64 60 59.91N 152 24.33W 112.9 2.6 0.18 3.73 6.43 75 15 3 48 C E COOK INLET. 98 12 13 6 38 36.05 60 19.66N 152 25.76W 101.2 2.6 0.17 4.57 6.83 94 13 6 22 C E COOK INLET. 98 12 13 8 3 20.66 61 48.24N 148 39.62W 11.4 0.7 0.23 4.70 6.25 139 8 4 14 C E PR WILLIAM SOUND. 98 12 13 8 19 38.11 61 36.61N 146 19.12W 42.4 1.3 0.24 3.69 9.66 72 14 5 25 C E PR WILLIAM SOUND. 98 12 13 8 50 43.91 60 56.79N 147 46.65W 10.0 1.2 0.40 3.40 7.39 72 13 4 26 C E PR WILLIAM SOUND. 98 12 13 11 16 47.27 61 30.64N 149 15.59W 39.4 1.4 0.13 2.54 4.17 87 16 4 11 B E COOK INLET. 98 12 13 13 32 51.66 61 54.86N 150 35.81W 49.4 3.6 0.13 4.18 5.20 83 15 4 48 C E COOK INLET. 98 12 13 14 8 11.28 58 23.75N 142 15.76W 10.0G 3.7 0.28 9.00 16.61 191 16 9 183 D E GULF OF ALASKA. 98 12 13 15 32 26.04 62 41.87N 150 2.76W 73.2 1.7 0.13 11.33 13.21 152 11 4 35 D E CENTRAL AK. 98 12 13 16 29 29.35 60 27.32N 151 27.12W 63.5 1.9 0.23 3.78 12.99 92 12 5 34 D E KENAI PEN. 98 12 13 17 47 48.76 60 56.94N 147 48.20W 9.2 2.5 0.32 0.88 1.11 72 16 4 26 A E PR WILLIAM SOUND. 98 12 13 18 24 12.11 64 47.07N 148 0.69W 26.1 1.4 0.10 4.65 6.21 64 10 4 12 C E CENTRAL AK.