Issued: March 31, 1998 Prepared by:Lalitha Rao No. 11- 98 The following is a list of significant earthquakes during the time period March 23 - 29, 1998 March 24 at 19:25 UTC (10:25 am AST), mb 4.4, 51 N 50', 177 W 3', depth = 57 km (35 mi): A light earthquake, felt in Adak, was located by NEIC in the Andreanof Islands region of Alaska about 17 mi ( 27 km) W of Adak 124 mi (200 km) W of Atka 171 mi (276 km) E of Amchitka 218 mi (351 km) W of Amukta Pass 302 mi (485 km) E of Buldir Is March 29 at 07:41 UTC (March 28 at 10:41 pm AST), mb 4.4, 51 N 17', 178 E 51', depth = 47 km (29 mi): A light earthquake was located by NEIC in the Rat Islands region of Alaska about 18 mi ( 29 km) SSW of Amchitka 145 mi (234 km) ESE of Buldir Is 198 mi (319 km) W of Adak 225 mi (362 km) ESE of Shemya Is 265 mi (427 km) ESE of Attu _____________________________________________________________________________________________________________________________________________________ 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 3 23 0 12 21.78 61 46.62N 149 40.55W 38.2 1.7 0.25 1.21 2.08 86 16 11 18 A E COOK INLET. 98 3 23 0 41 37.81 61 25.57N 147 27.93W 37.7 1.3 0.17 0.81 2.81 75 16 10 32 B E PR WILLIAM SOUND. 98 3 23 3 40 36.21 60 7.64N 152 52.52W 115.4 3.4 0.33 0.94 1.56 64 37 25 7 A E COOK INLET. 98 3 23 8 6 25.70 60 38.58N 151 56.32W 75.2 1.9 0.27 1.34 2.89 45 24 17 29 B E KENAI PEN. 98 3 23 11 50 6.76 63 36.38N 150 43.43W 5.8 0.5 0.03 62.09 77.40 129 3 2 11 D E CENTRAL AK. 98 3 23 13 14 34.62 61 58.26N 149 7.10W 4.3 0.6 0.30 1.43 1.77 149 7 5 24 A E COOK INLET. 98 3 23 14 4 32.12 61 15.19N 150 55.09W 64.2 1.8 0.18 1.31 1.86 90 25 21 59 A E COOK INLET. 98 3 23 14 16 3.41 60 46.09N 151 20.19W 65.0 1.6 0.33 1.64 2.86 50 24 15 6 B E KENAI PEN. 98 3 23 14 55 38.32 59 23.36N 151 31.81W 69.5 2.7 0.33 0.96 2.15 155 28 20 11 A E KENAI PEN. 98 3 23 15 42 46.26 60 33.47N 145 18.42W 0.0 1.7 0.18 2.69 2.85 104 15 7 40 B E PR WILLIAM SOUND. 98 3 23 17 25 26.57 64 50.61N 147 17.52W 0.9 1.2 0.10 0.83 13.66 65 15 9 17 D E CENTRAL AK. 98 3 23 18 58 14.82 63 15.62N 151 2.30W 0.0 1.7 0.18 1.54 3.64 101 17 8 33 B E CENTRAL AK. 98 3 23 19 35 2.85 59 40.17N 152 47.76W 88.0 1.3 0.08 5.30 2.65 156 9 6 25 C E COOK INLET. 98 3 23 21 43 53.09 63 17.21N 150 32.60W 139.1 2.1 0.18 1.86 3.45 64 17 6 22 B E CENTRAL AK. 98 3 24 0 4 40.46 61 20.07N 146 43.48W 16.5 0.7 0.08 3.33 14.75 97 9 3 31 D E PR WILLIAM SOUND. 98 3 24 0 29 54.16 64 48.72N 147 15.15W 14.9 1.7 0.08 1.28 2.13 63 13 9 18 A E CENTRAL AK. 98 3 24 0 51 33.09 60 52.11N 147 29.95W 26.3 1.4 0.15 1.73 4.72 59 14 8 22 B E PR WILLIAM SOUND. 98 3 24 1 25 13.32 63 15.09N 151 5.18W 5.2 1.9 0.13 4.94 8.18 101 19 5 35 C E CENTRAL AK. 98 3 24 1 43 4.60 63 17.49N 149 43.69W 96.4 1.3 0.31 10.23 8.99 69 13 4 33 D E CENTRAL AK. 98 3 24 1 54 39.23 59 55.43N 153 28.17W 126.2 2.5 0.13 4.22 6.39 69 31 6 23 C E COOK INLET. 98 3 24 3 31 24.09 61 18.72N 146 47.22W 40.5 0.8 0.15 4.09 11.23 92 10 4 30 D E PR WILLIAM SOUND. 98 3 24 4 9 35.73 60 1.09N 152 9.19W 73.5 1.6 0.31 5.76 11.77 80 9 3 45 D E COOK INLET. 98 3 24 4 35 1.17 60 56.33N 148 37.59W 31.1 1.6 0.13 1.82 3.70 55 17 7 18 B E KENAI PEN. 98 3 24 5 52 30.53 61 0.02N 146 31.78W 13.9 2.0 0.49 1.38 1.45 64 16 4 7 A E PR WILLIAM SOUND. 98 3 24 6 26 45.48 65 7.20N 148 32.51W 16.2 1.7 0.22 4.77 2.91 136 13 6 23 B E N CENTRAL AK. 98 3 24 7 3 54.97 59 49.29N 151 57.98W 61.6 2.8 0.26 1.30 3.86 35 32 7 26 B E KENAI PEN. 98 3 24 12 22 6.21 61 58.25N 147 16.74W 40.0 1.2 0.16 3.31 3.49 77 14 7 16 B E PR WILLIAM SOUND. 98 3 24 12 25 10.25 63 6.41N 150 17.85W 98.6 2.4 0.12 2.18 3.55 60 15 6 36 B E CENTRAL AK. 98 3 24 13 48 5.74 59 50.07N 151 54.71W 58.2 2.0 0.30 4.14 8.52 51 15 8 25 C E KENAI PEN. 98 3 24 17 24 31.63 62 4.13N 150 14.41W 44.4 2.1 0.21 3.40 6.06 76 13 8 37 C E CENTRAL AK. 98 3 24 17 53 15.54 62 13.05N 150 43.86W 57.9 2.4 0.17 3.08 3.70 68 16 7 32 B E CENTRAL AK. 98 3 24 18 2 17.39 60 38.52N 147 5.47W 20.0 1.4 0.14 3.04 2.41 93 12 8 26 B E PR WILLIAM SOUND. 98 3 24 18 15 2.90 62 42.83N 150 33.52W 85.9 3.0 0.19 2.45 3.02 72 19 10 38 B E CENTRAL AK. 98 3 24 19 25 39.36 51 49.62N 177 2.70W 56.5* 4.4mb R ANDREANOF ISLS. 98 3 24 21 16 42.52 61 43.58N 147 31.12W 30.6 2.1 0.37 1.30 2.46 40 19 9 16 A E PR WILLIAM SOUND. 98 3 25 3 28 8.32 61 15.93N 149 56.37W 38.9 1.3 0.30 1.86 2.57 111 15 10 20 B E COOK INLET. 98 3 25 4 52 55.96 61 8.27N 151 57.47W 87.0 1.8 0.18 3.87 4.19 71 17 7 15 B E COOK INLET. 98 3 25 6 58 23.59 60 19.57N 152 5.30W 92.2 2.3 0.22 1.29 1.83 55 17 11 38 A E COOK INLET. 98 3 25 8 8 27.90 63 10.13N 150 25.44W 113.8 2.4 0.18 1.64 2.70 64 20 7 32 B E CENTRAL AK. 98 3 25 9 24 5.34 59 40.77N 153 12.20W 114.0 2.7 0.19 1.33 1.30 53 30 20 3 A E COOK INLET. 98 3 25 10 47 34.27 64 44.97N 148 13.90W 15.2 1.6 0.15 0.82 1.85 74 14 11 22 A E CENTRAL AK. 98 3 25 12 53 26.84 61 19.47N 147 34.24W 30.4 0.9 0.19 1.50 3.09 65 11 7 19 B E PR WILLIAM SOUND. 98 3 25 12 54 4.48 59 16.66N 154 34.88W 0.0 2.0 0.27 1.75 2.99 167 22 4 61 B E COOK INLET. 98 3 25 13 49 57.30 61 53.87N 147 48.47W 34.0 2.1 0.31 1.30 1.48 65 19 13 26 A E PR WILLIAM SOUND. 98 3 25 15 15 40.00 62 55.52N 151 20.57W 111.3 2.6 0.25 2.88 3.37 78 17 10 73 B E CENTRAL AK. 98 3 25 17 26 0.68 60 57.88N 150 50.02W 14.2 1.6 0.30 0.71 1.36 92 18 13 33 A E KENAI PEN. 98 3 25 17 58 37.87 61 56.88N 150 57.74W 0.0 1.7 0.52 0.92 1.74 73 18 11 62 A E COOK INLET. 98 3 25 19 16 18.03 60 3.15N 152 51.31W 110.0 3.1 0.22 1.56 2.29 65 24 17 7 A E COOK INLET. 98 3 25 22 47 45.73 60 7.36N 153 7.48W 126.8 2.7 0.24 1.62 1.49 96 23 14 7 A E COOK INLET. 98 3 26 0 37 43.61 65 15.18N 148 31.10W 0.0 1.7 0.21 3.44 36.49 103 13 9 35 D E N 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 3 26 1 29 52.91 61 46.99N 150 1.69W 38.3 2.7 0.11 1.27 2.63 55 21 8 17 B E COOK INLET. 98 3 26 3 55 0.95 61 27.05N 150 39.08W 45.3 1.7 0.21 4.82 10.91 62 15 7 47 D E COOK INLET. 98 3 26 5 9 7.14 65 13.59N 148 28.42W 12.3 2.3 0.13 2.49 2.67 112 15 10 32 B E N CENTRAL AK. 98 3 26 6 59 25.16 61 43.83N 149 42.76W 32.4 1.8 0.17 2.75 1.95 45 18 7 12 B E COOK INLET. 98 3 26 9 54 24.97 63 15.27N 149 45.89W 95.2 2.1 0.13 3.47 6.05 68 14 6 32 C E CENTRAL AK. 98 3 26 17 10 23.59 59 52.82N 150 49.25W 32.6 2.2 0.22 1.50 1.78 125 21 6 14 A E KENAI PEN. 98 3 26 19 10 21.48 63 3.17N 151 2.08W 116.1 2.0 0.09 7.12 9.12 71 10 3 56 C E CENTRAL AK. 98 3 26 20 57 58.37 63 24.68N 147 21.59W 62.7 1.7 0.19 2.71 7.06 50 15 7 37 C E CENTRAL AK. 98 3 26 23 36 42.96 60 33.31N 141 12.62W 20.0 1.9 0.17 2.86 16.34 133 14 6 46 D E YAKUTAT BAY. 98 3 27 1 17 36.30 63 9.74N 150 11.65W 102.2 2.2 0.25 1.45 2.54 84 18 6 33 B E CENTRAL AK. 98 3 27 1 57 11.51 59 58.08N 152 55.48W 112.2 1.7 0.17 3.14 3.59 145 15 8 7 B E COOK INLET. 98 3 27 3 26 55.24 60 11.30N 153 27.46W 136.9 1.8 0.20 3.52 3.45 246 14 8 23 B E COOK INLET. 98 3 27 5 23 10.98 60 57.96N 146 47.28W 14.2 1.1 0.36 0.93 1.03 54 14 8 14 A E PR WILLIAM SOUND. 98 3 27 5 59 19.86 59 57.08N 150 46.44W 31.5 1.8 0.28 1.55 2.03 121 16 14 22 A E KENAI PEN. 98 3 27 8 25 57.85 63 14.98N 150 28.94W 124.2 2.6 0.21 2.16 3.06 63 18 10 24 B E CENTRAL AK. 98 3 27 13 40 57.98 60 51.72N 147 16.83W 27.5 1.6 0.35 0.84 1.03 59 15 13 10 A E PR WILLIAM SOUND. 98 3 27 14 2 45.13 59 45.69N 152 7.09W 58.7 2.4 0.29 0.95 2.50 44 29 23 29 A E COOK INLET. 98 3 27 14 17 52.45 61 28.13N 146 41.39W 17.5 2.1 0.21 0.64 1.66 60 17 11 41 A E PR WILLIAM SOUND. 98 3 27 14 50 30.46 59 53.72N 153 2.66W 114.6 2.6 0.24 4.02 2.36 113 21 15 7 B E COOK INLET. 98 3 27 17 5 43.83 61 56.75N 152 0.39W 0.0 2.6 0.30 3.40 1.49 104 18 13 61 B E COOK INLET. 98 3 27 17 24 46.22 61 49.32N 149 31.85W 38.9 1.2 0.19 1.69 2.87 119 15 11 26 B E COOK INLET. 98 3 27 19 59 12.09 61 22.10N 149 41.36W 39.9 1.5 0.25 1.48 1.50 70 14 11 15 A E COOK INLET. 98 3 27 20 21 12.63 59 28.47N 151 59.91W 53.6 2.4 0.27 1.23 2.19 97 30 22 19 A E KENAI PEN. 98 3 27 21 25 8.12 61 18.78N 151 8.10W 61.2 2.0 0.23 1.61 2.06 99 22 18 47 A E COOK INLET. 98 3 27 23 12 44.49 64 34.82N 147 56.84W 15.2 0.8 0.15 0.95 1.18 133 5 5 10 A E CENTRAL AK. 98 3 28 2 33 54.50 63 15.93N 151 6.83W 11.0 2.3 0.14 2.29 4.07 76 12 5 33 B E CENTRAL AK. 98 3 28 4 8 2.53 59 19.18N 150 56.31W 34.5 1.8 0.13 8.30 6.28 144 13 4 29 C E KENAI PEN. 98 3 28 5 42 26.40 60 22.45N 152 23.25W 90.0 2.1 0.13 2.17 5.97 72 16 4 22 C E COOK INLET. 98 3 28 7 35 2.53 60 43.72N 149 1.27W 27.4 0.8 0.39 5.32 9.59 76 7 4 15 C E KENAI PEN. 98 3 28 15 22 46.56 60 38.13N 141 40.39W 13.9 2.6 0.27 2.16 12.81 97 15 4 31 D E YAKUTAT BAY. 98 3 28 17 43 15.07 63 11.07N 151 20.82W 13.2 3.2 0.15 3.60 2.96 103 17 3 46 B E CENTRAL AK. 98 3 28 18 45 2.76 52 50.19N 166 59.16W 97.8 2.4 0.53 85.48 76.66 336 6 3 107 D E FOX ISLS. 98 3 28 20 22 22.76 60 57.53N 147 7.86W 23.5 2.1 0.13 0.91 1.47 53 16 9 9 A E PR WILLIAM SOUND. 98 3 28 20 50 58.42 62 9.31N 150 17.97W 55.7 2.7 0.19 3.06 3.22 60 15 5 28 B E CENTRAL AK. 98 3 29 0 49 10.78 61 15.73N 149 40.28W 36.7 1.6 0.28 1.11 1.62 68 18 12 6 A E COOK INLET. 98 3 29 0 56 19.45 61 51.56N 149 28.65W 40.4 1.7 0.22 1.26 2.43 103 16 9 31 A E COOK INLET. 98 3 29 2 0 12.54 59 32.98N 152 42.23W 72.8 2.8 0.24 0.97 1.54 70 27 22 32 A E COOK INLET. 98 3 29 2 49 36.76 61 43.33N 150 41.25W 44.3 1.9 0.26 1.10 2.45 69 18 15 44 A E COOK INLET. 98 3 29 4 0 25.52 59 16.37N 151 49.51W 53.2 3.2 0.27 1.11 2.46 154 20 17 22 A E KENAI PEN. 98 3 29 5 5 23.11 61 47.79N 151 55.30W 99.9 2.4 0.23 2.02 3.04 104 19 14 46 B E COOK INLET. 98 3 29 7 17 58.81 63 3.30N 150 56.51W 128.6 1.8 0.23 1.95 3.60 162 15 5 55 B E CENTRAL AK. 98 3 29 7 41 15.19 51 17.04N 178 50.94E 47.4 4.4mb R RAT ISLS. 98 3 29 11 0 18.99 60 10.21N 153 10.16W 139.3 2.4 0.19 9.26 1.77 123 20 8 12 C E COOK INLET. 98 3 29 11 33 23.39 59 34.48N 151 56.81W 49.3 2.0 0.33 1.52 3.25 63 16 14 20 B E KENAI PEN. 98 3 29 12 7 13.51 63 23.63N 151 19.41W 17.4 3.1 0.28 2.11 1.38 109 18 9 27 A E CENTRAL AK. 98 3 29 12 42 10.03 59 19.21N 153 38.01W 121.4 3.2 0.21 1.56 2.74 56 24 17 11 B E COOK INLET. 98 3 29 18 10 15.96 63 22.38N 151 35.59W 20.5 3.3 0.29 3.54 1.88 82 18 7 39 B E CENTRAL AK. 98 3 29 20 27 59.09 59 57.52N 152 17.30W 65.2 1.8 0.30 1.13 3.25 90 20 16 40 B E COOK INLET. 98 3 29 20 43 11.66 60 41.12N 148 57.87W 20.0 1.4 0.32 1.48 3.18 79 12 7 20 B E KENAI PEN. 98 3 29 20 54 7.39 54 40.14N 161 55.05W 55.5 2.8 0.19 3.65 4.00 224 13 12 40 B E ALASKA PEN. _____________________________________________________________________________________________________________________________________________________ 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 3 29 21 2 37.14 60 18.96N 151 48.75W 68.1 1.9 0.25 1.12 2.14 71 19 15 42 A E KENAI PEN. 98 3 29 22 53 27.91 63 31.38N 151 12.52W 14.1 2.8 0.29 2.73 0.88 80 20 7 15 B E CENTRAL AK.