Issued: April 13, 1998 Prepared by: Lalitha Rao No. 13- 98 The following is a list of significant earthquakes during the time period April 6 - April 12, 1998 April 6 at 05:44 UTC ( April 5, 09:44 pm ADT), ML 4.6, 60 N 17', 153 W 27', depth = 170 km (105 mi): A light earthquake was located in the Cook Inlet region of Alaska about 30 mi ( 48 km) ENE of Port Alsworth 42 mi ( 67 km) NNE of Pedro Bay 53 mi ( 85 km) ENE of Nondalton 63 mi (101 km) NE of Iliamna 64 mi (103 km) NE of Newhalen April 7 at 05:11 UTC ( April 6, 09:11 pm ADT), ML 4.5, 64 N 44', 136 W 59', depth = 0 km (0 mi): A light earthquake was located in the Yukon Territory about 88 mi (142 km) NE of Dawson City 125 mi (201 km) E of Eagle 132 mi (212 km) ENE of Boundary 139 mi (223 km) E of Crooked Creek 156 mi (250 km) ENE of Chicken _____________________________________________________________________________________________________________________________________________________ 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 4 6 0 19 23.08 63 5.61N 150 55.30W 120.3 2.9 0.30 2.61 2.28 92 19 12 51 B E CENTRAL AK. 98 4 6 1 15 53.03 63 46.02N 149 48.31W 131.2 2.4 0.15 2.05 2.41 96 15 12 43 A E CENTRAL AK. 98 4 6 5 44 25.57 60 17.36N 153 27.22W 169.7 4.6 0.25 3.46 4.51 90 29 13 31 B E COOK INLET. 98 4 6 6 14 20.65 60 21.26N 152 58.76W 136.3 2.3 0.18 6.50 4.02 137 17 7 21 C E COOK INLET. 98 4 6 7 45 48.26 63 36.41N 148 45.01W 16.5 2.3 0.32 1.43 1.14 59 17 10 17 A E CENTRAL AK. 98 4 6 7 59 48.09 60 5.65N 153 3.77W 110.7 2.6 0.24 1.49 2.14 68 29 16 4 A E COOK INLET. 98 4 6 8 15 2.59 62 12.39N 149 45.54W 58.2 1.4 0.29 4.04 5.22 124 12 8 34 C E CENTRAL AK. 98 4 6 11 3 7.11 60 37.24N 149 46.23W 41.6 2.4 0.22 0.98 2.51 57 17 11 27 A E KENAI PEN. 98 4 6 14 25 4.33 61 49.38N 151 5.54W 65.0 3.7 0.21 1.52 4.94 69 16 7 67 B E COOK INLET. 98 4 6 19 14 28.92 60 13.60N 152 55.43W 100.3 2.2 0.31 2.27 3.25 147 19 10 16 B E COOK INLET. 98 4 6 19 14 57.21 61 12.37N 152 14.11W 116.2 2.2 0.12 9.44 4.85 107 16 7 6 C E COOK INLET. 98 4 6 22 19 28.80 62 13.09N 150 55.61W 76.3 2.6 0.17 1.10 3.09 72 17 11 40 B E CENTRAL AK. 98 4 6 22 58 47.04 59 50.66N 151 28.27W 42.3 1.8 0.27 1.13 2.18 54 20 15 23 A E KENAI PEN. 98 4 7 3 7 20.16 62 4.08N 147 31.10W 34.6 1.3 0.23 5.90 9.05 117 14 5 28 C E CENTRAL AK. 98 4 7 3 7 35.94 60 21.97N 152 27.13W 94.7 2.3 0.21 5.99 8.91 60 16 4 19 C E COOK INLET. 98 4 7 3 28 1.90 61 56.39N 146 59.87W 41.8 1.6 0.15 4.96 5.08 91 14 7 21 C E PR WILLIAM SOUND. 98 4 7 5 11 39.30 64 44.22N 136 59.20W 0.0 4.5 0.43 64.43 77.13 255 20 5 300 D E S YUKON TERR. 98 4 7 7 21 52.55 63 13.68N 150 40.82W 124.3 1.6 0.10 8.10 10.06 71 12 4 32 D E CENTRAL AK. 98 4 7 14 12 16.82 61 45.30N 151 59.67W 99.4 2.2 0.16 7.06 10.81 72 15 5 50 D E COOK INLET. 98 4 7 21 29 55.80 64 30.08N 147 49.43W 14.8 1.6 0.15 1.39 2.94 48 15 6 13 B E CENTRAL AK. 98 4 7 23 57 59.91 63 7.97N 150 48.16W 117.2 1.7 0.14 12.60 13.63 103 10 4 86 D E CENTRAL AK. 98 4 8 0 1 55.31 63 16.48N 151 14.60W 13.8 1.5 0.57 9.47 5.01 110 10 3 35 C E CENTRAL AK. 98 4 8 0 9 8.01 60 45.19N 146 24.77W 20.5 1.6 0.26 1.56 1.43 77 15 11 10 A E PR WILLIAM SOUND. 98 4 8 4 50 36.51 63 20.24N 149 35.78W 103.4 3.4 0.20 1.33 2.45 56 23 7 37 A E CENTRAL AK. 98 4 8 4 59 52.81 54 12.95N 162 30.50W 1.9 3.7 0.25 6.12 6.12 246 15 7 85 C E ALASKA PEN. 98 4 8 5 30 50.65 61 27.47N 146 34.71W 13.2 1.6 0.21 1.21 2.36 71 17 10 35 A E PR WILLIAM SOUND. 98 4 8 5 30 53.43 63 7.15N 150 33.84W 119.0 2.2 0.18 1.53 2.75 72 17 8 40 B E CENTRAL AK. 98 4 8 5 43 53.25 63 16.08N 149 45.01W 15.9 2.7 0.30 0.90 1.67 70 23 8 33 A E CENTRAL AK. 98 4 8 5 43 59.72 60 12.30N 152 42.04W 4.1 0.5 0.10 3.00 11.59 220 7 7 20 D a COOK INLET. 98 4 8 8 29 55.47 60 29.26N 149 6.02W 24.4 1.3 0.26 1.03 1.45 79 17 8 14 A E KENAI PEN. 98 4 8 9 25 4.81 62 53.36N 151 4.47W 119.9 2.0 0.18 2.10 2.99 130 16 8 68 B E CENTRAL AK. 98 4 8 9 38 41.51 60 2.38N 151 30.18W 63.2 2.1 0.28 1.00 2.64 45 19 12 12 B E KENAI PEN. 98 4 8 9 38 41.65 60 1.68N 151 31.22W 62.5 2.0 0.28 1.02 2.63 58 23 17 13 B E KENAI PEN. 98 4 8 13 19 9.20 61 4.31N 150 5.71W 42.9 1.8 0.22 1.61 2.15 71 18 13 35 A E COOK INLET. 98 4 8 17 18 49.65 60 3.94N 152 35.23W 98.6 2.4 0.20 1.31 1.54 67 23 16 21 A E COOK INLET. 98 4 8 17 30 9.41 61 38.89N 151 53.71W 107.6 2.0 0.24 3.61 4.67 138 15 10 38 B E COOK INLET. 98 4 8 23 34 56.71 59 53.18N 153 2.58W 99.7 1.1 0.19 3.71 4.17 234 13 6 8 B E COOK INLET. 98 4 9 0 59 33.97 65 8.68N 146 45.61W 28.2 0.5 0.11 15.02 17.96 167 6 4 34 D E N CENTRAL AK. 98 4 9 2 47 26.03 62 31.36N 151 14.97W 82.1 2.0 0.19 7.48 13.02 86 13 5 52 D E CENTRAL AK. 98 4 9 2 59 33.32 64 30.19N 147 50.01W 5.0 2.0 0.17 0.77 3.65 47 16 7 13 B E CENTRAL AK. 98 4 9 5 13 32.04 64 41.60N 149 0.46W 6.6 1.6 0.34 3.95 5.48 103 11 7 13 C E CENTRAL AK. 98 4 9 10 25 5.87 62 34.16N 150 48.81W 77.7 1.9 0.17 3.25 5.19 77 13 6 34 C E CENTRAL AK. 98 4 9 11 9 8.63 60 2.95N 153 22.20W 142.7 1.9 0.14 10.28 11.68 105 14 2 13 D E COOK INLET. 98 4 9 12 1 31.18 60 54.48N 147 37.06W 20.6 1.9 0.21 0.88 2.59 55 19 6 29 B E PR WILLIAM SOUND. 98 4 9 12 44 39.05 62 14.19N 149 49.69W 64.8 1.3 0.40 8.24 10.68 65 9 4 30 D E CENTRAL AK. 98 4 9 12 50 53.63 60 2.35N 153 4.11W 0.2 0.1 0.05 0.89 2.80 110 6 6 2 B a COOK INLET. 98 4 9 13 3 43.03 64 39.36N 146 21.29W 3.9 1.9 0.14 2.09 11.13 112 14 7 28 D E CENTRAL AK. 98 4 9 14 4 13.14 61 47.76N 149 36.42W 40.0 1.2 0.31 5.37 10.54 85 9 6 22 D E COOK INLET. 98 4 9 16 3 25.81 62 25.01N 151 27.98W 86.2 1.8 0.18 8.13 14.20 87 14 6 62 D E CENTRAL AK. 98 4 9 17 2 1.37 63 49.23N 152 41.37W 12.0 2.4 0.25 5.89 4.75 108 17 5 92 C E CENTRAL 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 _____________________________________________________________________________________________________________________________________________________ 98 4 9 21 12 36.11 62 30.38N 148 18.99W 10.4 1.5 0.14 4.27 9.40 132 8 5 78 C E CENTRAL AK. 98 4 10 1 1 3.47 59 37.76N 151 43.36W 76.6 1.6 0.25 3.15 5.36 200 13 9 49 C E KENAI PEN. 98 4 10 1 4 50.29 59 58.52N 150 49.62W 39.1 2.5 0.23 1.18 2.09 110 20 18 24 A E KENAI PEN. 98 4 10 3 47 20.48 58 46.78N 152 27.87W 55.4 3.7 0.16 1.65 2.34 128 21 15 19 A E KODIAK IS REG. 98 4 10 5 22 8.46 61 10.26N 150 4.04W 42.1 3.0 0.29 0.84 2.54 79 20 15 28 B E COOK INLET. 98 4 10 6 29 2.33 60 43.15N 147 23.86W 9.0 1.8 0.35 0.72 1.28 73 17 11 24 A E PR WILLIAM SOUND. 98 4 10 7 54 8.94 60 1.78N 145 42.31W 0.0 1.6 0.45 5.57 3.06 247 7 3 60 C PR WILLIAM SOUND. 98 4 10 9 9 55.24 60 57.16N 146 37.87W 25.8 1.6 0.29 1.21 1.60 78 15 8 12 A E PR WILLIAM SOUND. 98 4 10 12 31 9.27 60 18.69N 151 52.06W 69.1 1.7 0.23 1.93 3.51 85 16 14 50 B E KENAI PEN. 98 4 10 12 50 50.02 61 29.74N 146 36.74W 16.6 3.7 0.26 0.59 1.83 69 17 15 37 A E PR WILLIAM SOUND. 98 4 10 13 50 1.55 62 25.86N 149 24.35W 54.8 1.6 0.33 2.06 3.37 71 15 8 45 B E CENTRAL AK. 98 4 10 15 22 29.13 61 29.50N 150 38.30W 59.7 2.3 0.19 1.51 3.12 69 17 11 44 B E COOK INLET. 98 4 10 23 36 28.67 62 48.97N 150 35.72W 81.2 2.0 0.16 2.89 4.11 140 17 10 49 B E CENTRAL AK. 98 4 10 23 36 56.29 58 0.14N 154 45.77W 40.0 1.4 0.30 94.52 40.26 354 3 2 37 D E ALASKA PEN. 98 4 10 23 56 20.87 61 40.16N 150 0.29W 39.3 1.5 0.16 1.46 2.30 100 12 7 7 A E COOK INLET. 98 4 11 3 41 46.42 59 51.57N 151 25.11W 78.7 2.0 0.19 5.57 9.25 56 15 3 22 C E KENAI PEN. 98 4 11 3 47 44.51 61 39.30N 148 37.34W 10.4 0.7 0.09 2.85 7.74 87 9 4 21 C E PR WILLIAM SOUND. 98 4 11 4 28 52.09 61 58.03N 149 40.53W 15.0 1.3 0.18 5.22 13.83 88 11 6 37 D E COOK INLET. 98 4 11 4 30 47.59 62 14.66N 151 45.91W 3.8 2.0 0.34 3.95 6.73 85 14 7 80 C E CENTRAL AK. 98 4 11 4 50 36.13 61 24.48N 150 5.98W 42.2 1.7 0.15 3.51 4.13 91 14 6 34 B E COOK INLET. 98 4 11 5 21 45.07 61 25.65N 147 52.37W 30.7 1.4 0.08 1.23 3.60 62 14 9 28 B E PR WILLIAM SOUND. 98 4 11 6 46 2.97 64 43.06N 148 13.63W 19.5 1.4 0.13 3.19 4.73 72 13 5 25 B E CENTRAL AK. 98 4 11 9 15 4.79 61 37.77N 151 56.96W 115.1 2.7 0.15 5.27 9.48 68 18 3 36 C E COOK INLET. 98 4 11 13 30 7.18 59 42.23N 150 13.12W 12.2 3.3 0.35 2.04 5.77 116 17 5 38 C E KENAI PEN. 98 4 11 15 49 46.63 60 19.86N 152 19.19W 84.9 1.1 0.24 10.20 12.51 96 9 4 27 D E COOK INLET. 98 4 11 16 34 12.12 60 2.17N 153 4.47W 0.0 -0.6 0.03 1.03 1.80 121 6 8 3 A a COOK INLET. 98 4 11 17 39 42.74 63 19.68N 145 18.35W 8.5 0.7 0.13 6.81 11.90 102 7 4 24 D E E CENTRAL AK. 98 4 11 17 52 14.99 59 45.82N 151 40.67W 51.6 2.4 0.29 1.59 3.41 47 15 11 12 B E KENAI PEN. 98 4 11 18 25 30.44 59 42.97N 152 1.73W 54.7 1.5 0.12 7.48 10.63 72 13 4 23 D E COOK INLET. 98 4 11 19 57 57.15 64 17.35N 148 2.61W 17.9 2.4 0.32 0.88 2.63 99 13 4 20 B E CENTRAL AK. 98 4 11 22 20 34.12 59 51.78N 151 52.71W 61.2 1.1 0.32 9.23 17.34 96 8 4 39 D E KENAI PEN. 98 4 11 23 1 30.44 60 6.97N 147 8.93W 3.5 1.9 0.17 5.54 7.92 100 13 6 40 C E PR WILLIAM SOUND. 98 4 12 2 9 34.34 60 28.69N 150 25.91W 17.7 2.5 0.21 0.84 4.27 71 17 9 53 B E KENAI PEN. 98 4 12 3 31 50.33 61 20.81N 147 27.46W 24.2 1.5 0.25 0.78 1.63 71 16 10 25 A E PR WILLIAM SOUND. 98 4 12 3 32 14.36 59 21.36N 153 25.38W 0.0 -0.5 0.15 6.96 7.77 296 5 3 0 C a COOK INLET. 98 4 12 3 52 6.23 59 12.04N 151 51.26W 52.1 2.8 0.28 1.11 2.57 125 24 18 30 B E KENAI PEN. 98 4 12 4 48 6.78 62 9.45N 152 6.00W 116.7 2.8 0.14 3.13 3.76 86 18 9 99 B E CENTRAL AK. 98 4 12 11 14 9.96 61 46.72N 148 24.40W 10.0 1.7 0.48 0.85 0.98 73 15 14 5 A E PR WILLIAM SOUND. 98 4 12 11 15 17.35 62 10.13N 150 36.11W 58.6 1.6 0.32 3.06 3.26 130 15 9 31 B E CENTRAL AK. 98 4 12 21 19 7.69 62 45.41N 149 33.57W 72.6 2.1 0.31 1.43 1.50 53 17 12 25 A E CENTRAL AK. 98 4 12 21 24 0.66 60 30.79N 152 42.67W 3.2 -0.8 0.12 2.10 1.05 160 6 6 2 A a COOK INLET. 98 4 12 21 23 48.94 59 51.41N 153 40.85W 132.1 2.9 0.23 3.73 3.93 86 17 4 30 B E COOK INLET. 98 4 12 22 46 26.52 59 47.80N 138 56.82W 0.0 2.4 0.42 3.88 3.26 283 10 6 29 B E SOUTHEASTERN AK. 98 4 12 23 35 40.99 61 27.36N 146 31.60W 17.9 2.2 0.24 0.84 1.92 75 17 15 33 A E PR WILLIAM SOUND.