DISCLAIMER -- THIS IS NOT AN EARTHQUAKE PREDICTION OR WARNING! The commentary provided with these map(s) is for INFORMATIONAL USE ONLY, and SHOULD NOT be construed as an earthquake prediction, warning, or advisory. Responsibility for such warnings rests with the Office of Emergency Services of the State of California. PLEASE REMEMBER -- THESE ARE PRELIMINARY DATA Releasing these summaries on a timely basis requires that the data, analysis, and interpretations presented are PRELIMINARY. Of necessity they can only reflect the views of the seismologists who prepared them, and DO NOT carry the endorsement of the U.S.G.S. Thus while every effort is made to ensure that the information is accurate, nothing contained in this report is to be construed as and earthquake prediction, warning, advisory, or official policy statement of any kind, of the U.S. Geological Survey, or the U.S. Government. FOR QUESTIONS CONCERNING THIS REPORT Send e-mail to michael@andreas.wr.usgs.gov DO NOT SEND EMAIL TO weekly@garlock.wr.usgs.gov It will not be read. Seismicity Report for Northern California, the Nation, and the World for the week of August 10 - 16, 1995 Data and text prepared by Steve Walter and Barry Hirshorn U.S. Geological Survey 345 Middlefield Rd. MS-977, Menlo Park, CA 94025 Graphics by Quentin Lindh San Francisco Bay Area Activity remained very low over the past week. During the seven-day period ending at midnight on Wednesday, August 16, 1995 the U.S. Geological Survey office in Menlo Park recorded 14 earthquakes of magnitude one (M1) and greater within the San Francisco Bay area shown in Figure 1. Three were as large as M2. This total compares to 15 earthquakes during the previous seven-day period (August 3 - 9) three of which were as large as M2.0. The distribution of earthquakes was typical with a pair of M2's on the central Calaveras fault and a single M2 on the creeping segment of the San Andreas. The Calaveras activity consisted of a M2.0 nine miles east of San Jose (#1 in figure 1) and a M2.1 about 14 miles north of Morgan Hill (#3/1). The lone M2 event on the San Andreas was a M2.5 Monday afternoon that was located about five miles northwest of San Juan Bautista (#2/1). Northern & Central California Once again seismicity in the Cape Mendocino area occurred primarily within the Gorda Plate, rather than along the Mendocino fracture zone that forms its southern boundary with the larger Pacific Plate. Only one earthquake occurred along the fracture zone, a M2.8 just after midnight last Friday (#3/2). Within the Gorda plate a M 2.6 occurred Monday about 60 miles offshore of the Cape (#6/2). It was followed Wednesday evening by a M3.0 that occurred just 25 miles offshore (#10/2). The Coast Range saw a decrease of activity in the Geysers area compared to the previous week. The largest event of the week was a M2.6 Monday morning (#5/2), which compares to three earthquakes last week that were as large as M3. North of the Geysers a M2.1 occurred near Lakeport last Friday at a depth of 21 km and a M2.0 occurred Sunday along the southern Maacama fault (#2/2). Somewhat unusual was a M2.3 Monday evening in the central Sacramento Valley, essentially beneath the university town of Davis (#7/2). Central California, as usual, was most active along the central creeping segment of the San Andreas with a M2.6 last Thursday southeast of San Benito (#1/2) and a trio of M2's on Tuesday just six miles north of the Pinnacles National Monument (9/2). Sunday morning a M2.1 occurred along the Big Sur coast about 26 miles southeast of Point Sur (#4/2) and a M2.2 occurred Monday eight miles southeast of Coalinga. Aside from activity in the Long Valley caldera, the only notable earthquakes in the Sierra Nevada were a M3.2 and a M2.3 that occurred Monday night about 22 miles northwest of China Lake (#8/2). Long Valley Caldera There were no earthquakes as large as M2 within the caldera during the week and only one event that was as large as M1.5. Activity south of the caldera declined significantly from last week's level with only three events as large as M2 in the Red Slate Mountain/Mt. Baldwin areas (#1,#2,#4/3). For the second straight week there were multiple M2's in near the drainage of Lake Crowley (#3/3). This follows a M3.5 that occurred in this location on July 20. USA Seismicity (August 7 - 16) According to the National Earthquake Information Center a M3.3 occurred in the Soda Springs area of southeastern Idaho (#3/4) and a M4.4 occurred along the Blanco fracture zone offshore of central Oregon (#5/4). Other notable earthquakes were in California including a M3.3 beneath the Santa Barbara Channel (#1/4) and a M3.1 north of Banning (#2/4). The Planet Earth (August 7 - 16) Two major earthquakes occurred in the New Britain region of Papua New Guinea on Wednesday (#3/5). The epicenters of both the M7.8 mainshock and the M7.2 aftershock were similar, about 160 miles southeast of Rabaul, a city on the island of New Britain in eastern Papua New Guinea. At least three other aftershocks were as large as M6.0. No damage or injuries were reported from any of these earthquakes. Other earthquakes of note along the southwest Pacific rim include a M5.7 in the Loyalty Islands region (#2/5) and a M5.9 in the Kermadec Islands north of New Zealand (#4/5). Aftershocks continued along the northern coast of Chile after a M7.8 on July 30. Two of the largest aftershocks, a M5.5 and a M5.4, were felt in the coastal towns of Antofagasta, Maria Elena, Talabre, and Tocopilla (#1/5). China conducted an underground nuclear test on August 17 at its test site at Lop Nor (#5/5). The explosion registered 6.1 on the Richter scale. This was China's second nuclear test this year. Table 1. Northern & Central California Seismicity (M>1.0) --ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH N N RMS ERH ERZ DUR YR MON DA HRMN SEC DEG MIN DEG MIN KM RD S SEC KM KM REMKS MAG 95 AUG 10 706 24.39 36 48.18 121 19.79 6.02 11 .02 .5 .9 PAI 1.1 95 AUG 10 811 24.60 38 49.73 122 46.87 2.80 29 .20 .3 1.0 GEY 2.1 95 AUG 10 921 27.33 37 32.19 118 52.56 6.92 20 .13 .5 .7 MOR 2.1 95 AUG 10 931 4.63 37 32.67 118 51.73 4.61 10 .13 .7 1.4 MOR 1.2 95 AUG 10 1222 11.35 38 49.16 122 48.59 3.61 9 .06 .4 .9 GEY 1.2 95 AUG 10 1648 40.19 37 33.66 118 50.73 1.36 10 1 .05 1.2 .7 MOR 1.3 95 AUG 10 1702 41.80 37 33.00 118 50.27 1.32 13 .06 .5 .4 MOR 1.8 95 AUG 10 1904 6.46 38 49.09 122 48.44 4.81 16 .15 .5 .8 GEY 1.4 95 AUG 10 1921 13.92 37 28.37 118 49.25 2.02 15 .10 .6 6.0 MOR 2.1 95 AUG 10 1927 25.09 37 5.90 121 1.95 1.03 23 .20 .8 9.9 ORT * 1.8 95 AUG 10 2030 30.65 37 32.80 118 49.60 1.68 10 .08 .5 1.1 MOR 1.8 95 AUG 10 2103 18.06 36 24.88 120 59.41 6.99 73 5 .11 .2 .4 BIT 2.8 95 AUG 11 123 35.28 37 34.43 118 49.66 3.56 9 1 .12 .7 .9 MOR 1.4 95 AUG 11 404 33.33 38 46.43 122 43.99 1.88 8 .07 .3 .7 GEY 1.2 95 AUG 11 410 32.65 35 44.49 118 1.41 7.18 16 2 .10 .3 1.2 WWF- 1.8 95 AUG 11 626 4.63 36 35.03 121 11.47 7.63 9 .06 .5 1.0 PIN 1.1 95 AUG 11 824 39.25 38 48.95 122 48.31 5.00 14 .11 .5 .7 GEY 2.0 95 AUG 11 852 13.08 38 48.93 122 48.58 3.88 7 .02 .4 .8 GEY 1.3 95 AUG 11 956 49.20 37 27.88 118 48.52 0.46 13 .12 .7 1.4 MOR 1.5 95 AUG 11 1327 35.86 38 49.39 122 47.89 3.75 12 .06 .3 .7 GEY 1.6 95 AUG 11 1409 13.69 37 29.57 118 49.07 0.74 7 .05 1.5 9.1 MOR - 1.5 95 AUG 11 1512 47.70 40 15.53 122 29.02 23.40 13 .11 .6 .8 KLA 1.8 95 AUG 11 1601 7.82 37 31.19 118 44.06 4.21 13 3 .21 1.0 4.0 WCN 1.1 95 AUG 11 1629 2.84 36 34.98 121 10.82 3.96 19 1 .07 .2 .5 PIN 1.4 95 AUG 11 1636 33.60 37 32.53 118 52.07 5.47 13 2 .06 .4 1.0 MOR 1.0 95 AUG 11 1700 9.79 37 32.96 118 49.89 1.76 9 1 .05 1.2 .9 MOR 1.0 95 AUG 11 1911 34.90 37 34.23 118 50.44 2.43 9 .04 1.5 2.3 MOR 1.1 95 AUG 11 1917 43.92 36 4.13 120 37.04 4.41 14 .10 .6 .6 SLA 1.4 95 AUG 11 1930 15.86 38 46.86 122 42.86 3.07 16 .12 .3 .6 GEY 2.0 95 AUG 11 1942 28.36 37 29.56 118 49.28 1.35 12 .05 1.5 1.8 MOR 1.4 95 AUG 11 2047 5.93 37 28.99 118 48.88 3.91 22 .09 .6 1.1 MOR- 1.8 95 AUG 11 2054 51.01 39 1.62 122 55.34 21.08 21 1 .13 .5 .7 MAA 2.1 95 AUG 11 2238 59.31 37 29.40 119 0.35 7.52 17 .13 .6 2.0 SIL 1.7 95 AUG 11 2244 30.78 37 29.79 118 49.15 1.43 14 .06 1.2 2.4 MOR 1.3 95 AUG 12 20 56.92 37 9.54 121 55.75 5.46 17 .08 .3 .6 LOM 1.2 95 AUG 12 35 47.19 35 57.70 120 32.09 12.09 12 .12 .6 1.2 MID 1.4 95 AUG 12 103 49.03 37 33.52 118 51.69 0.04 8 .05 .7 .7 MOR * 1.6 95 AUG 12 409 13.73 37 30.94 118 44.69 1.64 12 .10 .510.2 WCN - 1.4 95 AUG 12 416 54.23 37 33.22 118 50.53 1.20 8 .06 .7 .5 MOR 1.2 95 AUG 12 429 12.17 37 34.01 118 55.14 2.36 7 .12 .610.8 SIL - 1.4 95 AUG 12 445 15.00 37 30.45 118 49.76 1.17 7 .04 3.0 1.5 MOR 1.1 95 AUG 12 538 9.97 37 9.39 121 55.62 5.55 34 3 .10 .2 .4 LOM 1.8 95 AUG 12 754 16.97 37 28.62 118 49.15 4.02 21 1 .08 .7 1.1 MOR 1.5 95 AUG 12 811 40.27 40 23.20 125 33.43 24.02 25 1 .26 3.420.0 MEN-- 2.8 95 AUG 12 851 14.73 38 49.67 122 50.17 1.93 11 .09 .4 .9 GEY 1.6 --ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH N N RMS ERH ERZ DUR YR MON DA HRMN SEC DEG MIN DEG MIN KM RD S SEC KM KM REMKS MAG 95 AUG 12 919 36.89 37 28.20 118 49.26 3.75 13 .12 .8 1.5 MOR 1.6 95 AUG 12 1054 2.51 37 32.10 121 54.61 7.83 29 1 .08 .2 .6 MIS- 1.3 95 AUG 12 1218 22.33 38 50.70 122 49.44 2.87 16 .13 .4 1.2 GEY 1.8 95 AUG 12 1821 38.48 37 34.66 118 50.34 3.57 12 .07 .4 .7 MOR 1.7 95 AUG 12 2029 32.19 36 47.21 121 28.29 3.70 9 .22 1.0 1.4 SJB 1.1 95 AUG 12 2233 32.86 37 32.49 118 48.90 2.03 8 .10 .7 3.1 MOR 1.4 95 AUG 13 210 40.38 38 52.11 122 48.52 1.51 16 .09 .3 1.4 GEY 1.7 95 AUG 13 302 51.13 37 31.67 118 49.78 9.22 15 .11 .7 1.0 MOR 1.6 95 AUG 13 322 9.43 37 40.43 118 50.28 1.67 8 .11 .8 .6 HCF 1.0 95 AUG 13 513 20.39 37 31.93 118 48.46 0.18 8 .14 1.3 .5 MOR 1.4 95 AUG 13 605 15.89 37 31.02 118 51.28 1.41 11 .09 1.2 1.2 MOR 1.6 95 AUG 13 632 56.10 37 33.73 118 49.77 3.11 25 5 .06 .2 .6 MOR 1.7 95 AUG 13 737 20.46 37 33.05 118 50.91 0.55 8 .02 .7 .4 MOR 1.3 95 AUG 13 1312 56.15 36 2.54 121 34.17 5.28 38 3 .10 .4 1.3 SUR 2.1 95 AUG 13 1436 12.76 37 21.15 118 25.14 14.08 7 .04 .5 1.5 KAI 1.1 95 AUG 13 1526 19.79 36 11.72 120 18.80 11.09 21 1 .12 .4 .7 COA 1.8 95 AUG 13 1554 34.21 37 35.02 118 42.91 6.12 18 .08 .3 1.4 CAS 2.0 95 AUG 13 1732 17.61 38 48.99 122 48.69 3.86 8 .02 .3 .7 GEY 1.2 95 AUG 13 2008 6.27 39 21.58 123 16.12 6.57 14 3 .09 .3 1.2 MAA 1.5 95 AUG 13 2024 44.31 38 47.66 122 43.81 4.92 8 .03 .4 1.0 GEY 1.1 95 AUG 13 2210 33.62 37 34.90 118 43.03 7.04 22 .10 .4 1.3 CAS 1.9 95 AUG 13 2220 34.79 39 21.45 123 16.23 7.08 16 3 .07 .2 1.2 MAA 1.6 95 AUG 13 2246 28.69 37 35.06 118 43.03 6.53 22 .11 .4 1.4 CAS 2.1 95 AUG 13 2248 58.09 37 34.93 118 42.86 4.90 24 .16 .4 1.8 CAS 2.0 95 AUG 13 2317 45.33 37 35.27 118 42.81 1.93 9 .09 .610.4 CAS - 1.5 95 AUG 13 2341 23.36 39 2.29 123 7.32 5.32 31 2 .08 .2 .7 MAA 2.1 95 AUG 13 2359 16.20 36 29.70 121 4.18 2.44 12 .08 .3 .5 BIT 1.7 95 AUG 14 30 5.45 38 46.87 122 44.40 5.67 17 .13 .4 .7 GEY 1.7 95 AUG 14 453 48.97 38 47.75 122 44.91 0.04 8 .08 .3 1.5 GEY * 1.3 95 AUG 14 512 28.20 37 35.37 118 42.84 1.91 9 .13 .712.8 CAS - 1.2 95 AUG 14 529 11.98 37 35.36 118 58.36 3.35 10 .07 .4 1.1 SIL 1.3 95 AUG 14 741 39.55 37 34.29 118 49.91 3.19 14 .06 .4 .6 MOR 1.9 95 AUG 14 742 31.74 37 22.93 121 44.29 7.38 64 .09 .2 .4 ALU 2.0 95 AUG 14 753 18.58 37 33.21 118 45.60 2.21 8 .17 1.114.8 WCN - 1.4 95 AUG 14 801 16.30 37 32.86 118 50.74 1.19 7 .08 1.3 .7 MOR 1.7 95 AUG 14 803 57.21 37 34.96 118 43.01 7.99 13 .11 .6 1.8 CAS 1.5 95 AUG 14 822 53.88 37 22.80 121 44.34 7.32 62 2 .12 .2 .5 ALU 1.9 95 AUG 14 831 37.23 37 22.81 121 44.17 6.98 17 .09 .3 .7 ALU 1.5 95 AUG 14 928 14.65 37 33.28 118 51.71 0.02 7 .08 .7 .7 MOR * 1.2 95 AUG 14 959 46.63 40 1.45 122 56.04 0.51 13 .19 .5 5.8 KLA 1.9 95 AUG 14 1059 19.22 39 22.94 123 17.87 6.82 13 .19 .6 1.7 MAA 1.6 95 AUG 14 1153 2.31 37 38.35 118 54.71 10.37 10 .15 1.0 1.9 SMO 1.1 95 AUG 14 1535 11.49 36 0.55 120 34.05 5.48 20 .09 .4 .5 SLA 1.9 95 AUG 14 1542 22.88 36 5.79 120 14.29 6.55 9 .25 1.3 4.3 COA 2.2 95 AUG 14 1602 53.16 38 49.53 122 47.57 0.53 10 .10 .3 1.2 GEY 1.5 --ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH N N RMS ERH ERZ DUR YR MON DA HRMN SEC DEG MIN DEG MIN KM RD S SEC KM KM REMKS MAG 95 AUG 14 1622 21.49 38 49.56 122 47.67 0.03 15 .10 .3 1.0 GEY * 1.8 95 AUG 14 1638 26.11 40 13.45 123 33.97 28.21 15 1 .14 .6 1.2 MEN 1.8 95 AUG 14 1644 33.90 38 49.09 122 48.60 3.65 19 .06 .2 .6 GEY 2.9 95 AUG 14 1644 34.56 38 46.39 122 47.07 0.49 24 .42 1.4 6.0 GEY 2.7 95 AUG 14 1656 43.09 38 49.28 122 48.51 3.95 8 .01 .4 .8 GEY 1.0 95 AUG 14 1705 10.54 37 39.78 118 50.67 3.00 9 .09 .5 .9 HCF 1.6 95 AUG 14 1906 16.73 37 35.64 118 58.23 1.83 8 .16 1.9 .7 SIL 1.3 95 AUG 14 1925 15.27 37 31.45 118 48.31 4.21 17 .12 .6 1.3 MOR 2.0 95 AUG 14 1938 42.13 38 49.23 122 47.83 5.09 15 .13 .5 .8 GEY 1.7 95 AUG 14 2052 57.21 38 48.52 122 48.75 4.04 7 .01 .4 .8 GEY 1.0 95 AUG 14 2128 16.86 39 47.95 123 19.41 5.61 15 1 .13 .4 1.9 BAR- 1.7 95 AUG 14 2133 59.15 37 34.59 118 51.42 6.13 7 .11 .9 1.4 MOR 1.3 95 AUG 14 2142 12.90 36 53.42 121 36.82 1.60 22 .22 .6 .9 SJB 2.5 95 AUG 14 2222 36.85 38 49.47 122 48.23 4.53 10 .08 .3 .9 GEY 1.3 95 AUG 14 2231 29.56 40 40.12 125 54.75 23.68 24 .26 8.622.4 PON - 2.6 95 AUG 14 2338 38.43 37 34.34 118 51.19 0.91 7 .09 .9 1.0 MOR 1.1 95 AUG 15 122 6.60 38 49.54 122 46.74 2.94 12 .06 .3 .7 GEY 1.5 95 AUG 15 130 8.81 37 16.63 121 38.97 6.24 7 .02 .4 .7 SFL 1.0 95 AUG 15 219 30.39 37 32.31 118 52.55 3.36 7 .04 1.9 5.7 MOR 1.2 95 AUG 15 252 19.66 38 37.01 121 52.72 8.88 33 .30 .7 1.0 SAC 2.3 95 AUG 15 412 39.69 35 46.87 118 1.67 11.73 19 .11 .3 .8 WWF 3.1 95 AUG 15 432 57.93 35 47.37 118 1.86 10.40 8 .04 .4 1.0 WWF 2.3 95 AUG 15 435 5.58 37 34.37 118 55.77 6.15 7 .18 .9 4.4 SIL 1.4 95 AUG 15 443 35.62 36 34.19 121 9.82 2.92 11 .05 .3 .5 PIN 1.5 95 AUG 15 637 12.41 37 34.58 118 48.47 3.62 7 .08 1.1 .9 MOR 1.1 95 AUG 15 652 36.12 36 35.89 121 12.01 1.99 14 .08 .3 .6 PIN 1.4 95 AUG 15 820 33.71 37 32.48 118 25.69 6.88 7 .03 .4 .7 CHV 1.8 95 AUG 15 832 5.51 37 35.32 118 42.73 1.63 10 .10 .711.7 CAS - 1.3 95 AUG 15 920 7.34 40 30.39 124 11.31 19.17 14 2 .07 .4 .5 EUR 1.8 95 AUG 15 943 48.22 37 30.84 118 48.01 7.92 7 .14 8.1 6.3 MOR - 1.2 95 AUG 15 1212 47.74 37 34.41 118 50.73 1.42 8 .06 .6 .5 MOR 1.3 95 AUG 15 1336 45.22 36 34.32 121 9.84 2.82 36 .10 .2 .5 PIN 2.4 95 AUG 15 1413 17.60 36 34.48 121 9.79 2.63 32 .10 .2 .5 PIN 2.5 95 AUG 15 1414 12.60 36 34.54 121 9.72 2.96 21 .09 .3 .6 PIN 2.0 95 AUG 15 1519 5.99 38 49.59 122 47.95 3.95 8 .01 .4 .8 GEY 1.1 95 AUG 15 1547 30.64 37 27.66 118 49.69 13.42 8 .06 1.0 2.1 MOR 1.3 95 AUG 15 1556 11.58 37 35.78 118 58.14 2.28 7 .16 2.3 1.0 SIL 1.1 95 AUG 15 1606 22.21 37 38.18 122 1.71 7.26 7 .12 .9 1.6 HAY 1.4 95 AUG 15 1806 46.17 38 47.06 122 45.47 2.22 21 .13 .3 .8 GEY 2.1 95 AUG 15 1950 26.66 37 31.40 118 52.86 5.03 22 2 .09 .3 .6 MOR 1.9 95 AUG 15 2006 34.17 38 51.18 122 49.89 0.63 7 .03 .3 .9 GEY 1.2 95 AUG 15 2222 30.20 38 47.89 122 44.66 1.44 7 .05 .4 1.0 GEY 1.0 95 AUG 15 2223 14.54 38 47.91 122 44.62 2.32 7 .03 .4 .9 GEY 1.0 95 AUG 15 2246 5.55 37 30.29 122 24.23 2.09 10 1 .09 .3 .8 SFP 1.8 --ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH N N RMS ERH ERZ DUR YR MON DA HRMN SEC DEG MIN DEG MIN KM RD S SEC KM KM REMKS MAG 95 AUG 15 2250 9.62 36 34.41 121 9.91 2.81 7 .09 .5 .4 PIN 1.3 95 AUG 15 2313 40.30 38 35.47 121 56.87 4.71 16 1 .39 1.3 5.5 SAC 1.7 95 AUG 16 23 2.44 37 19.35 121 41.45 7.00 53 2 .06 .1 .4 SFL 2.1 95 AUG 16 24 37.85 38 48.06 122 48.12 2.04 14 .11 .3 .5 GEY 2.0 95 AUG 16 401 2.99 37 27.39 118 50.46 2.24 9 .06 1.4 4.8 MOR * 1.4 95 AUG 16 406 42.02 40 30.07 124 48.38 24.30 18 3 .14 1.7 7.2 MEN- 3.1 95 AUG 16 431 9.80 37 8.64 119 9.54 6.04 8 .17 3.815.6 KAI - 1.6 95 AUG 16 1055 10.46 37 32.93 118 46.99 4.74 7 .18 2.2 2.6 MOR 1.2 95 AUG 16 1225 24.73 37 34.59 118 51.84 6.11 10 .10 .8 .7 MOR 1.4 95 AUG 16 1533 10.81 37 32.62 121 55.54 9.93 31 .13 .3 .8 MIS 1.8 95 AUG 16 1659 28.78 38 49.52 122 48.02 3.79 8 .03 .3 .7 GEY 1.2 95 AUG 16 2234 11.19 37 35.40 118 29.04 8.73 9 .02 .4 .9 CHV 1.7 95 AUG 16 2238 15.22 36 22.47 121 1.34 0.42 7 .05 .4 .8 BIT 1.9 95 AUG 17 46 27.58 38 47.36 122 46.29 2.03 23 .14 .3 .8 GEY 2.1 95 AUG 17 100 29.92 38 48.94 122 48.51 3.53 7 .03 .5 .7 GEY 1.2 95 AUG 17 115 3.10 37 33.87 118 50.12 2.35 9 .07 .5 1.0 MOR 1.7 95 AUG 17 418 23.76 38 47.56 122 46.62 1.73 7 .02 .4 .6 GEY 1.0 TABLE 2. Data from National Earthquake Information Center (NEIC) UTC TIME LAT LONG DEP GS MAGS SD STA REGION AND COMMENTS HRMNSEC MB Msz USED AUG 07 021053.6* 6.180N 126.441E 103? 4.8 0.8 15 MINDANAO, PHILIPPINE ISLANDS 032240.6% 33.908S 71.297W 50G 0.2 11 NEAR COAST-CENTRAL CHILE. MD 3.8 080545.7 6.852S 129.626E 144* 4.9 1.1 23 BANDA SEA 121103.0% 33.433S 69.854W 5G 0.3 9 CHILE-ARGENTINA BORDER. MD 3.1 152741.4? 32.60 S 71.54 W 10G 0.6 8 NEAR COAST-CENTRAL CHILE. MD 3.6 204808.7* 33.621N 140.050E 108* 4.9 0.6 13 SOUTH OF HONSHU, JAPAN AUG 08 001552.4% 32.412N 35.529E 16 0.4 20 DEAD SEA REGION. ML 3.5 (JER). Felt slightly at Jerusalem. 003524.5 11.764N 125.721E 33N 5.4 5.0 1.0 56 SAMAR, PHILIPPINE ISLANDS 063453.9* 11.848N 125.876E 33N 4.9 1.0 18 SAMAR, PHILIPPINE ISLANDS AUG 09 001824.8? 59.28 N 150.63 W 33N 1.4 13 KENAI PENINSULA, ALASKA. ML 3.3 030157.6& 34.215N 118.479W 14 12 SOUTHERN CALIFORNIA. MD 2.6 Felt 061927.0 61.563N 151.023W 79? 0.4 10 SOUTHERN ALASKA. ML 2.8 (PMR). 072037.6 24.424S 70.096W 34D 5.1 4.2 0.9 42 NEAR COAST OF NORTHERN CHILE 082300.3 23.178S 70.006W 35D 5.4 4.7 1.0 79 NEAR COAST OF NORTHERN CHILE. Felt (IV) at Antofagasta, Calama, Maria Elena, Talabre and Tocopilla. 091748.0? 26.65 S 113.90 W 10G 4.7 0.9 17 EASTER ISLAND REGION 102933.0* 7.293N 72.211W 33N 4.5 0.9 12 NORTHERN COLOMBIA 121637.6& 34.238N 119.646W 19 16 SOUTHERN CALIFORNIA. MD 3.3 135300.1& 32.317N 115.259W 6G 10 CALIF.-BAJA CALIF. BORDER MD 3.4 AUG 10 004104.3 15.652S 41.144E 10G 5.1 5.1 0.9 95 MOZAMBIQUE CHANNEL 004105.2* 42.555N 20.014E 10G 1.2 31 NORTHWEST BALKAN REGION. ML 4.0 073313.0? 35.42 S 71.38 W 120G 0.3 10 CENTRAL CHILE. MD 2.7 (SAN). 114637.8* 17.698S 178.911W 600G 4.3 0.8 18 FIJI ISLANDS REGION 155542.1? 14.56 S 76.19 W 33N 4.8 1.0 12 NEAR COAST OF PERU. Felt (V) at Palpa, (IV) at Ica and (III) at Chincha Alta and Nazca. 164535.2% 33.987S 70.327W 100G 0.4 10 CHILE-ARGENTINA BORDER. MD 2.9 173813.6* 15.967S 177.432W 33N 4.9 4.8 1.4 45 FIJI ISLANDS REGION. Ms 4.8 181037.3 23.688S 70.438W 33N 5.5 4.7 1.0 91 NEAR COAST OF NORTHERN CHILE. Felt (V) at Antofagasta; (IV) at Baquedano; (III) at Maria Elena, Mejillones and Talabre; (II) at Copiapo and Taltal. 195107.8? 63.47 N 150.45 W 33N 1.6 10 CENTRAL ALASKA. ML 2.9 (PMR). 234035.7? 34.31 S 70.75 W 90G 0.1 6 CHILE-ARGENTINA BORDER AUG 11 040740.9 17.535N 61.855W 10G 4.8 1.7 47 LEEWARD ISLANDS 062733.6% 33.850S 70.087W 10G 0.2 10 CHILE-ARGENTINA BORDER. MD 3.1 091923.5 23.150S 170.472E 33N 5.7 5.2 0.7 33 LOYALTY ISLANDS REGION. Mw 5.5 101439.2 23.406S 66.624W 150G 5.0 0.9 51 JUJUY PROVINCE, ARGENTINA 134721.1 2.551N 84.226W 10G 5.0 4.9 0.8 56 OFF COAST-CENTRAL AMERICA AUG 12 024755.8% 33.285S 70.695W 80G 0.3 9 CHILE-ARGENTINA BORDER. MD 2.7 033906.8* 16.007S 179.533W 33N 4.9 4.7 1.3 16 FIJI ISLANDS REGION 040618.7* 2.789S 138.208E 33N 5.0 5.2 1.3 13 IRIAN JAYA, INDONESIA 064357.7% 33.614S 71.243W 50G 0.4 8 NEAR COAST-CENTRAL CHILE. MD 2.6 095752.3 33.981N 116.880W 5G 0.8 11 SOUTHERN CALIFORNIA. ML 3.1 102146.3? 32.43 S 70.73 W 90G 0.3 10 CHILE-ARGENTINA BORDER. MD 3.6 103256.5? 33.65 S 69.50 W 160G 0.2 9 CHILE-ARGENTINA BORDER. MD 3.8 133709.5 61.241N 146.807W 20G 1.1 13 SOUTHERN ALASKA. ML 3.3 (PMR). 135551.5% 32.653S 71.488W 20G 0.6 9 NEAR COAST-CENTRAL CHILE. MD 3.3 140018.6* 3.575S 149.209E 33N 4.5 5.2 1.1 10 BISMARCK SEA 200134.7? 34.30 S 70.22 W 5G 0.8 7 CHILE-ARGENTINA BORDER 220213.4 32.800N 131.245E 33N 4.6 0.8 23 KYUSHU, JAPAN 224419.9* 43.247N 147.587E 33N 4.9 4.0 0.5 36 KURIL ISLANDS AUG 13 010841.9% 33.278S 70.131W 120G 0.3 9 CHILE-ARGENTINA BORDER. MD 2.7 051729.6 38.110N 22.848E 20G 5.1 4.2 0.7 53 GREECE. Felt in Arkadhia and Korinthia. Also felt at Athens. 091056.0* 19.587N 69.151W 10G 4.3 1.0 21 DOMINICAN REPUBLIC REGION 105307.9 17.765S 178.351W 600G 4.4 0.6 30 FIJI ISLANDS REGION 120143.7 81.410N 3.614W 10G 4.7 4.0 0.8 24 NORTH OF SVALBARD 144921.0* 48.419N 154.284E 33N 4.2 0.6 10 KURIL ISLANDS 155356.3* 2.587S 80.368W 33N 4.5 0.8 23 NEAR COAST OF ECUADOR 193212.4 43.076N 111.158W 5G 0.5 13 EASTERN IDAHO. ML 3.3 (GS). AUG 14 003442.0 30.232N 113.936W 10G 3.8 0.9 28 GULF OF CALIFORNIA 043717.2 4.849S 151.506E 125G 6.5 6.3 1.1 89 NEW BRITAIN REG., P.N.G. Mw 6.9 082144.0* 57.867S 25.579W 33N 5.3 4.8 0.8 59 SOUTH SANDWICH ISLANDS REGION 213216.0* 44.275N 129.408W 10G 4.4 0.9 19 OFF COAST OF OREGON AUG 16 102728 Q 5.7 S 154.1 E 33N 7.8 0.8 91 SOLOMON ISLANDS 112141 Q 14.7 S 166.9 E 130 5.7 0.8 55 VANUATU ISLANDS 140543 Q 5.0 S 153.5 E 33N 5.9 0.9 24 NEW IRELAND REGION, P.N.G. 150400 Q 31.7 S 178.7 E 460 5.9 0.7 81 KERMADEC ISLANDS REGION 152854 Q 5.0 S 153.4 E 80 5.7 0.9 51 NEW IRELAND REGION, P.N.G. 162428 Q 5.3 S 153.8 E 33N 6.8 0.9 59 NEW IRELAND REGION, P.N.G. 171916 Q 51.3 N 176.7 W 33N 5.1 1.1 45 ANDREANOF ISLANDS, ALEUTIAN IS. 205857 Q 29.1 N 128.8 E 33N 5.5 0.7 38 NORTHWEST OF RYUKYU ISLANDS 231027 Q 5.7 S 154.1 E 70 7.2 0.9 104 SOLOMON ISLANDS AUG 17 001552 Q 5.9 S 153.9 E 33N 6.6 1.0 64 NEW IRELAND REGION, P.N.G. 005957 Q 41.6 N 88.7 E 0G 6.1 0.7 89 SOUTHERN XINJIANG, CHINA 015959 Q 5.7 S 153.9 E 33N 5.6 0.8 41 NEW IRELAND REGION, P.N.G. 100127 Q 5.1 S 153.3 E 33N 6.5 1.2 53 NEW IRELAND REGION, P.N.G. Note: Computer users can get faster acces to the Weekly Seismicity Reports in any of three ways: 1. World-Wide-Web (WWW) access: http://quake.wr.usgs.gov 2. Anonymous FTP access: quake.wr.usgs.gov (in pub/www/QUAKES/WEEKREPS) 3. Email Access: (send email to michael@andreas.wr.usgs.gov) Notes for Table 1: Origin time in the list is in GMT, in the text and on maps it is in local time. N RD: is the number of readings used to locate the event. N S: is the number of S waves in N RD. RMS SEC: is the root mean squared residual misfit for the location is seconds, the lower the better, over 0.3 to 0.5 seconds is getting bad, but this is machine, not hand timed, data. ERH: is the estimated horizontal error in kilometers. ERZ: is the estimated vertical error in kilometers. N FM: is the number of readings used to compute the magnitude. REMKS: obtuse region codes that denote the velocity model used to locate the event. DUR MAG: is the magnitude as determined from the duration of the seismograms, not the amplitude. Sort of like going to echo canyon and measuring how loud your yell is by counting echos. FIG: denotes the figure/event number in the maps posted separately.