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 December 5 - 11, 1996 Stephen R. Walter U.S. Geological Survey 345 Middlefield Rd. MS-977, Menlo Park, CA 94025 San Francisco Bay Area Activity increased somewhat in the past week. During the seven-day period ending at midnight on Wednesday, December 11, 1996 the U.S. Geological Survey office in Menlo Park recorded 29 earthquakes of magnitude one (M1) and greater within the San Francisco Bay area shown in Figure 1. Eight were as large as M2. This total compares to 35 earthquakes during the prior eight-day period (November 27 - December 4),six of which were as large as M2. The cluster of small earthquakes on the northern Calaveras near San Ramon that began last week continued with seven more events as large as M1, the largest a M2.4 on Tuesday evening (#3/1). Other events of note in the East Bay included a M2.0 southeast of Livermore (#4/1) and a M2.3 beneath Pleasant Hill, just west of the central Concord fault (#6/1). Activity remained light elsewhere on the Calaveras fault with a M2.1 east of San Jose (#5/1) and M2.4 four miles south of Hollister (#7/1). Activity on the San Andreas was limited to a pair of M2's about five miles northwest of San Juan Bautista (#1/1). More interesting was a M2.6 in the western Santa Cruz mountains about four miles west of Felton (#2/1). Northern & Central California The most active area in the region during the week was along the Nevada border about 13 miles east of Markleeville (#2/2). Beginning with M2.9 and M3.4 within the same minute last Sunday morning, the cluster went on to produce another nine events as large as M2 including another pair of M3 events later that night. (Late note: A M4.6 occurred in this same location this morning, Dec. 12, at 10:36 am PST.) This area has been active off and on since a M6.0 occurred here in September, 1994. Several other areas along the east side of the Sierra Nevada range also produced M2 earthquakes. A M2.8 occurred early Monday morning about 18 miles north of Truckee, the same location as a M3.2 on November 15 (#4/2). Farther north a M2.6 occurred about 13 miles west of Burney early Wednesday morning (#8/2). It was followed about an hour later by a M2.3 about three miles southwest of Quincy (#9/2). Finally, a M2.6 earthquake occurred Monday afternoon in the northern Owens Valley about six miles north of Bishop (#6/2). Activity along the north coast was minor with only one earthquake as large as M2 offshore of Cape Mendocino (#7/2). Similarly, the onshore activity was limited to a 14-km-deep M2.1 17 miles west of Hayfork (#3/2). The Coast Range was quiet at the M2 level, except at the Geysers geothermal area where a M2.5 occurred early Monday morning (#5/2). The only notable activity in central California was a M3.4 in the southern Diablo Range about 11 miles northwest of Coalinga (#1/2). Long Valley Caldera For the third straight week there were no earthquakes as large as M2 inside the caldera. The only M2 event in the region was a M2.2 Wednesday evening south of Red Slate Mountain (#1/3). USA Seismicity (December 2 - 10) The largest earthquakes in the lower 48 states were M4.6 and M5.1 events that occurred Saturday on the Blanco fracture zone about 270 miles west of Eugene, OR (#4/4). Other events of note include a M3.4 in northeastern Utah (#3/4) and continuing activity in the Coso area of southern California (#2/4). The Planet Earth (December 2 - 10) The planet was relatively quiet during the week with the only large earthquakes occurring along the mid-Atlantic ridge, far from any population centers. On Monday a M6.2 earthquakes occurred along the northern mid-Atlantic ridge (#3/5). It was preceded an hour earlier by a M5.0 foreshock. The following day a M6.2 earthquake occurred along the central mid-Atlantic ridge and was followed within the hour by a M5.0 aftershock (#4/5). Other earthquakes of note include a M5.4 off the east coast of Honshu, Japan (#1/5) and a M5.7 south of the Island of Java, Indonesia (#2/5). 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 96 DEC 5 823 27.67 36 35.93 121 11.99 1.81 21 .09 .2 .5 PIN 1.4 96 DEC 5 944 17.46 38 47.13 122 45.40 2.12 7 .01 .3 .8 GEY 1.5 96 DEC 5 950 55.97 37 47.13 121 58.32 9.78 8 2 .06 1.2 1.3 DAN 1.2 96 DEC 5 951 14.33 37 46.96 121 57.93 8.14 16 1 .04 .3 .8 DAN 1.4 96 DEC 5 1044 52.44 36 23.66 120 56.75 0.84 14 .06 .3 .7 BIT 1.1 96 DEC 5 1221 58.46 36 54.94 121 35.85 6.90 68 1 .15 .2 .4 SAR 2.3 96 DEC 5 1225 27.81 36 55.67 121 36.07 5.97 12 .11 .5 .6 SAR 1.3 96 DEC 5 1443 21.44 38 47.67 122 54.85 4.49 8 .03 .4 2.9 GEY 1.3 96 DEC 5 1626 6.33 36 16.79 120 28.39 5.96 42 2 .33 .3 .7 COA 2.3 96 DEC 5 1706 35.59 36 16.68 120 27.97 9.05 46 .12 .2 .4 COA 3.4 96 DEC 5 2121 32.59 36 35.21 121 11.29 3.15 11 .04 .3 .4 PIN 1.0 96 DEC 5 2152 35.36 37 55.61 121 56.69 2.56 8 .02 .5 1.3 CON 1.3 96 DEC 6 102 45.67 38 50.30 122 46.76 2.29 23 .06 .2 .5 GEY 2.0 96 DEC 6 225 25.52 37 3.14 122 8.96 18.86 64 2 .11 .2 .3 MON 2.6 96 DEC 6 507 18.31 37 46.89 121 58.02 8.28 16 .06 .3 .8 DAN 1.4 96 DEC 6 507 40.61 37 47.03 121 58.08 8.90 59 3 .08 .1 .2 DAN 2.4 96 DEC 6 525 38.48 37 32.97 121 40.15 5.05 49 3 .07 .1 .3 HAM 2.0 96 DEC 6 551 41.07 38 28.53 122 17.29 0.16 20 .44 .8 2.7 GVL # 1.6 96 DEC 6 741 58.36 37 46.69 121 58.32 7.65 13 2 .06 .4 1.5 DAN 1.3 96 DEC 6 834 49.66 38 48.27 122 45.42 0.98 10 2 .03 .3 .6 GEY 1.4 96 DEC 6 1151 32.39 36 52.00 121 36.56 9.65 42 .09 .2 .4 SJB 2.0 96 DEC 6 1201 35.06 36 37.14 121 13.46 6.27 34 1 .06 .2 .5 PIN 1.9 96 DEC 6 1211 26.22 36 23.16 120 57.76 5.73 20 2 .05 .2 .6 BIT 1.3 96 DEC 6 1442 44.83 36 11.74 121 34.67 11.24 19 .05 .5 .8 SUR 1.6 96 DEC 6 2211 57.66 36 47.24 121 29.03 3.93 26 2 .16 .3 .6 SJB 1.6 96 DEC 7 217 0.70 37 37.70 118 53.11 3.51 11 .02 .3 .7 SMO 1.5 96 DEC 7 427 34.12 36 14.73 120 40.73 11.30 11 1 .04 .6 .5 COA 1.5 96 DEC 7 530 47.51 36 23.70 120 57.55 1.76 15 .06 .3 1.0 BIT 1.2 96 DEC 7 530 57.39 36 23.73 120 57.63 1.17 16 .05 .3 .6 BIT 1.1 96 DEC 7 724 54.51 37 36.68 118 58.97 6.73 14 .05 .3 .6 SHE 1.5 96 DEC 7 814 6.50 36 33.43 121 9.17 6.60 10 .03 .3 .8 PIN .9 96 DEC 7 947 23.76 37 27.04 121 48.10 7.24 38 2 .05 .2 .2 ALU 1.4 96 DEC 7 1204 39.57 37 33.99 118 49.87 4.85 9 1 .03 2.4 .7 MOR 1.3 96 DEC 7 1216 19.45 36 58.99 121 41.72 6.01 18 1 .09 .3 1.1 SAR 1.4 96 DEC 7 1429 45.88 37 37.93 118 52.41 3.58 7 .07 1.4 1.3 SMO 1.4 96 DEC 7 1554 34.96 38 50.48 122 46.69 1.14 8 .01 .5 1.4 GEY 1.2 96 DEC 7 1617 29.11 38 49.01 122 46.59 2.61 15 .02 .2 .3 GEY 1.6 96 DEC 7 1653 2.15 36 44.17 120 57.46 1.02 18 .14 .513.1 ORT - 1.0 96 DEC 7 1706 24.99 36 44.48 120 57.12 0.75 48 1 .13 .2 3.7 ORT # 2.1 96 DEC 7 1709 37.50 36 44.41 120 57.19 2.57 16 .13 .311.5 ORT - 1.2 96 DEC 7 1808 9.92 37 27.87 118 39.76 6.03 7 .04 .8 4.5 WCS 1.3 96 DEC 7 1821 49.40 35 59.13 120 59.35 6.90 17 .05 .3 .6 ROB 1.4 96 DEC 7 1900 15.75 38 49.20 122 49.81 0.35 14 .03 .2 .7 GEY# 1.6 96 DEC 7 1942 11.98 37 20.92 121 42.80 7.73 59 2 .06 .1 .3 ALU 2.1 96 DEC 7 2147 30.06 37 30.39 118 49.68 4.70 18 .07 .3 .7 MOR 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 96 DEC 7 2220 25.81 38 48.47 122 44.97 1.86 9 .04 .3 .7 GEY 1.5 96 DEC 7 2222 57.17 37 7.02 122 24.60 6.89 8 .02 5.1 1.0 ANN 1.7 96 DEC 7 2253 50.03 38 46.80 122 45.81 1.58 17 .07 .2 .5 GEY 1.7 96 DEC 7 2319 46.67 36 7.70 119 57.80 10.29 26 1 .19 .7 .6 COA 2.1 96 DEC 8 42 8.29 39 13.70 122 45.89 10.53 8 .03 .8 1.0 BAR 1.4 96 DEC 8 51 14.99 38 52.30 122 43.87 0.49 16 .52 1.0 1.9 KON 1.7 96 DEC 8 351 43.52 38 56.31 123 4.92 4.00 11 1 .03 .2 2.1 MAA 1.4 96 DEC 8 537 44.33 37 37.48 118 51.58 5.45 8 .07 .5 1.0 SMO 1.1 96 DEC 8 547 48.05 37 37.23 118 51.69 6.36 7 .03 .4 .9 SMO 1.0 96 DEC 8 549 40.47 37 37.14 118 51.65 6.18 7 .02 .4 .7 SMO 1.2 96 DEC 8 557 20.37 37 56.50 122 3.72 8.60 63 4 .17 .2 .3 CON 2.3 96 DEC 8 557 43.25 37 37.16 118 51.70 6.36 9 .02 .4 .8 SMO 1.1 96 DEC 8 953 59.59 37 16.93 121 39.54 2.91 14 1 .10 .3 1.7 SFL 1.1 96 DEC 8 1015 9.76 37 36.69 118 56.77 3.02 15 .07 .3 .4 SHE 1.7 96 DEC 8 1642 2.60 38 39.04 119 32.48 0.31 28 .08 .4 2.1 WAK # 2.9 96 DEC 8 1642 51.84 38 39.92 119 32.58 0.04124 1 .33 .4 1.1 WAK # 3.4 96 DEC 8 1644 56.64 38 30.79 119 42.08 34.50 9 .11 2.3 1.1 WAK # 2.7 96 DEC 8 1646 37.26 38 39.92 119 29.13 3.45 8 .04 4.7 6.7 WAK - 2.6 96 DEC 8 1904 13.59 38 30.81 119 51.05 20.57 12 .27 1.8 1.5 WAK 2.9 96 DEC 8 2253 16.43 38 41.38 119 25.91 3.90 12 .09 3.5 9.4 WAK - 2.9 96 DEC 8 2338 29.40 38 49.42 122 48.53 3.96 15 .05 .2 .5 GEY 1.5 96 DEC 9 40 18.78 38 49.96 122 52.61 2.71 20 .05 .3 .9 GEY 1.9 96 DEC 9 451 25.65 38 31.16 119 51.81 22.94 11 .17 1.5 1.8 WAK 2.6 96 DEC 9 520 14.59 40 30.65 123 29.97 14.05 7 .03 .9 .5 EUR 2.1 96 DEC 9 522 23.56 38 39.16 119 34.54 3.31 9 1 .05 1.8 4.9 WAK 2.1 96 DEC 9 553 29.00 38 42.12 119 21.63 7.94 12 1 .2410.514.8 WAK # 2.4 96 DEC 9 605 56.59 38 38.76 119 32.70 1.03 19 .06 .7 3.8 WAK 3.1 96 DEC 9 728 4.27 36 53.26 121 24.45 7.04 14 1 .04 .3 .9 HOL 1.0 96 DEC 9 739 17.56 38 38.55 119 32.17 9.79 8 .04 .8 5.9 WAK 3.0 96 DEC 9 815 48.53 36 16.53 120 50.45 7.41 30 2 .09 .2 .4 BIT 1.9 96 DEC 9 825 7.50 37 47.78 121 56.49 10.00 18 3 .07 .2 .7 DAN 1.2 96 DEC 9 856 29.76 38 47.82 122 48.35 4.09 8 .02 .3 .6 GEY 1.3 96 DEC 9 921 41.99 39 35.15 120 10.35 3.19 29 1 .19 1.3 2.1 WAK 2.8 96 DEC 9 947 58.96 37 46.92 121 58.03 8.51 26 3 .07 .2 .5 DAN 1.5 96 DEC 9 1146 29.27 38 48.05 122 44.43 2.67 13 .03 .2 .5 GEY 1.4 96 DEC 9 1233 30.98 38 48.04 122 48.88 1.70 27 .05 .2 .3 GEY 2.5 96 DEC 9 1339 18.29 36 8.67 120 12.42 6.86 12 .05 1.2 4.4 COA 1.8 96 DEC 9 1433 4.15 37 32.39 118 49.56 5.64 9 .06 1.0 .8 MOR 1.5 96 DEC 9 2044 38.00 36 16.43 120 46.88 6.86 20 .08 .3 .4 BIT 1.8 96 DEC 9 2200 45.99 37 26.84 118 22.73 10.86 25 .08 .3 .7 CHV 2.6 96 DEC 9 2216 51.04 38 48.79 122 48.83 2.79 9 .05 .3 2.2 GEY 1.5 96 DEC 10 308 44.29 37 42.20 121 57.50 9.69 12 2 .04 .3 .6 DAN 1.2 96 DEC 10 447 51.72 37 36.08 118 52.97 4.79 11 .06 .4 .8 SHE 1.3 96 DEC 10 626 53.61 38 38.36 119 34.77 0.40 7 1 .03 3.0 1.5 WAK 2.1 96 DEC 10 822 29.86 37 33.20 118 26.39 7.40 10 .03 .4 1.0 CHV 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 96 DEC 10 906 28.79 36 46.92 121 21.55 3.38 11 .03 .6 .3 HOL 1.1 96 DEC 10 1142 31.23 36 28.36 121 1.26 5.99 15 .07 .4 .8 BIT 1.3 96 DEC 10 1329 11.11 38 49.17 122 48.17 3.88 19 .04 .2 .5 GEY 1.8 96 DEC 10 1443 9.45 40 39.39 125 18.46 5.12 23 .12 2.512.7 DEL - 2.6 96 DEC 10 1456 23.59 38 38.41 119 32.82 2.50 20 1 .08 1.0 6.3 WAK 2.8 96 DEC 10 1515 37.46 36 47.47 121 23.43 3.54 48 2 .08 .1 .3 HOL# 2.4 96 DEC 10 2149 6.39 36 22.84 120 57.53 5.75 21 1 .06 .3 .7 BIT 1.6 96 DEC 11 547 47.93 38 46.98 122 45.72 2.13 8 .03 .3 .8 GEY 1.4 96 DEC 11 552 57.44 38 49.51 122 48.27 3.98 13 .04 .3 .5 GEY 1.4 96 DEC 11 639 56.86 38 45.94 122 41.48 2.84 10 1 .05 .4 .6 GEY 1.3 96 DEC 11 802 49.47 36 46.15 121 16.73 8.40 14 .03 .5 .8 PAI 1.0 96 DEC 11 859 44.26 38 47.12 122 45.43 1.79 9 .03 .2 .8 GEY 1.3 96 DEC 11 902 55.21 36 3.77 120 36.25 6.10 13 2 .03 .4 .5 SLA 1.4 96 DEC 11 926 49.04 40 52.79 121 54.70 10.56 17 1 .04 .2 .8 SHA 2.6 96 DEC 11 927 50.78 35 59.19 120 32.31 1.41 7 1 .02 .5 2.2 MID 1.2 96 DEC 11 944 16.58 38 44.31 122 39.82 2.87 10 .24 1.1 3.3 NAP 1.5 96 DEC 11 952 42.51 37 39.44 118 53.75 4.10 11 .09 .5 .6 DOM 2.0 96 DEC 11 1037 44.22 39 54.94 121 0.36 1.30 11 .04 1.5 8.8 WAK - 2.3 96 DEC 11 1155 42.17 36 41.54 121 26.24 6.72 10 1 .04 .4 1.3 SJB .8 96 DEC 11 1241 14.11 36 33.70 121 9.43 2.71 9 .04 .3 .5 PIN .9 96 DEC 11 1516 24.74 37 7.35 121 56.86 11.17 8 .01 .8 1.7 LOM .8 96 DEC 11 2235 58.43 37 20.60 121 40.04 4.11 22 .04 .2 .7 SFL 1.7 96 DEC 12 5 50.65 38 49.49 122 46.95 0.74 7 .02 .3 2.5 GEY 1.2 96 DEC 12 205 15.01 37 29.30 118 52.93 0.74 17 .08 .6 8.0 MOR - 2.2 96 DEC 12 231 16.68 39 2.44 121 58.34 14.09 8 .03 1.3 .8 SAC 2.1 96 DEC 12 635 56.74 36 46.44 121 23.07 0.93 7 .08 .4 1.0 HOL 1.3 96 DEC 12 647 54.15 38 49.30 122 48.44 4.01 11 .03 .3 .6 GEY 1.5 96 DEC 12 654 7.52 38 49.30 122 48.37 3.86 8 .01 .5 .6 GEY 1.3 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 -------------------------------------------------------------------------- DEC 02 030012.0* 28.113N 143.200E 33N 4.7 1.0 8 BONIN ISLANDS REGION 070024.8 28.007N 130.086E 33N 5.2 5.1 1.1 61 RYUKYU ISLANDS 082053.9* 12.230N 144.473E 52* 4.2 0.7 11 SOUTH OF MARIANA ISLANDS 083929.6? 20.63 S 169.88 E 33N 4.3 0.6 8 VANUATU ISLANDS 090408.5 30.501N 131.294E 33N 4.8 0.7 29 KYUSHU, JAPAN 091756.8 24.393S 179.772E 500G 4.7 1.0 43 SOUTH OF FIJI ISLANDS 100808.8* 45.187N 148.842E 100G 4.4 1.0 11 KURIL ISLANDS 113036.2* 0.457N 125.652E 33N 4.2 1.2 10 NORTHERN MOLUCCA SEA 121311.7? 30.85 S 179.73 E 400G 4.1 1.4 20 KERMADEC ISLANDS REGION 132745.5 10.672S 112.153E 33N 4.4 1.1 20 SOUTH OF JAWA, INDONESIA 151039.1* 53.264N 169.799W 107D 4.2 1.4 33 FOX ISLANDS, ALEUTIAN ISLANDS 153935.5 10.737S 112.115E 33N 4.3 1.1 20 SOUTH OF JAWA, INDONESIA 175404.2* 36.359N 70.590E 200G 4.2 0.6 8 HINDU KUSH REGION, AFGHANISTAN 183526.2? 6.70 N 126.57 E 33N 4.1 0.8 10 MINDANAO, PHILIPPINE ISLANDS 185156.6* 12.276N 125.243E 33N 4.4 0.8 14 SAMAR, PHILIPPINE ISLANDS 194813.1 7.952S 129.845E 71* 4.8 1.1 32 BANDA SEA 212528.6 13.908S 170.235E 600G 5.2 0.7 58 VANUATU ISLANDS REGION 233311.6 40.066N 119.568W 5G 0.9 64 NEVADA. ML 4.2 (GS). MD 4.2 (REN), 4.1 (GM). Felt in the Pyramid Lake area. 233551.4 40.011N 119.668W 5G 1.1 32 NEVADA. ML 3.7 (GS). 234057.0* 3.974S 103.295E 150G 4.4 0.9 16 SOUTHERN SUMATERA, INDONESIA DEC 03 003058.7* 47.704N 15.869E 10G 0.3 9 AUSTRIA. ML 3.1 (VIE). 025811.6* 7.727S 127.373E 150G 4.3 0.9 5 BANDA SEA 031329.0* 22.059S 68.415W 100G 3.9 1.0 14 NORTHERN CHILE 040916.2* 51.441N 16.219E 10G 1.1 9 POLAND. ML 3.4 (MOX). 042835.6 36.034N 117.635W 5G 1.0 45 CALIFORNIA-NEVADA BORDER REGION. ML 3.0 (GS). 042939.1 39.947N 119.645W 5G 0.8 35 NEVADA. ML 3.5 (GS). 044627.0 10.650S 112.129E 33N 4.5 1.2 27 SOUTH OF JAWA, INDONESIA 051053.5* 31.726N 131.887E 22* 4.0 0.7 13 KYUSHU, JAPAN 074025.4 38.319N 21.739E 10G 1.2 10 GREECE. ML 3.8 (THE). 075509.4* 31.963S 119.930E 10G 3.8 0.9 8 WESTERN AUSTRALIA 121540.9? 19.56 S 176.04 W 100G 4.3 0.7 9 FIJI ISLANDS REGION 134107.4 6.354S 130.023E 150G 4.6 1.2 28 BANDA SEA 142951.0 10.653S 112.131E 33N 4.7 1.2 27 SOUTH OF JAWA, INDONESIA 145649.8 44.652N 10.253E 10G 0.8 29 NORTHERN ITALY. ML 3.3 (LDG). 151056.9 8.210S 130.143E 33N 3.8 1.0 7 TANIMBAR ISLANDS REG., INDONESIA 154912.8 37.489N 139.494E 139D 5.0 0.8 174 EASTERN HONSHU, JAPAN 165151.9 54.784N 161.820E 33N 4.5 0.6 24 NEAR EAST COAST OF KAMCHATKA 180507.3 39.944N 19.930E 10G 4.3 1.1 56 GREECE-ALBANIA BORDER. ML 4.2 194302.2* 33.747N 35.528E 10G 3.2 0.4 16 JORDAN - SYRIA REGION. ML 4.1 204414.9* 46.143N 151.419E 33N 4.3 0.7 12 KURIL ISLANDS 204418.4 36.026N 117.587W 5G 1.0 53 CALIFORNIA-NEVADA BORDER. ML 3.4 204753.1 9.752N 125.659E 123D 5.2 1.0 66 MINDANAO, PHILIPPINE ISLANDS 210937.9* 70.646N 14.231W 10G 4.4 3.3 1.0 26 JAN MAYEN ISLAND REGION 212257.6* 9.721S 108.254E 33N 5.0 1.4 18 SOUTH OF JAWA, INDONESIA 232230.8 34.258N 139.363E 33N 4.0 0.7 18 NEAR S. COAST OF HONSHU, JAPAN DEC 04 000909.6? 26.81 S 26.74 E 5G 4.0 1.0 8 REPUBLIC OF SOUTH AFRICA 021420.8 53.574N 164.042W 33N 4.7 1.1 32 UNIMAK ISLAND REGION. ML 4.7 023934.5* 27.283N 52.407E 33N 4.3 0.9 26 SOUTHERN IRAN 024940.7 40.242N 52.940E 51D 4.4 0.9 41 TURKMENISTAN 035935.7* 42.820N 6.929W 10G 0.8 5 SPAIN. mbLg 3.0 (MDD). 053235.7* 58.677N 68.138E 33N 3.9 1.2 7 SOUTHWESTERN SIBERIA, RUSSIA 060644.3 36.629N 68.683E 33N 4.9 4.2 1.1 55 HINDU KUSH REGION, AFGHANISTAN 073927.0* 36.686N 68.572E 33N 4.0 0.9 13 HINDU KUSH REGION, AFGHANISTAN 081016.3* 6.809S 105.516E 38D 4.7 1.2 23 SUNDA STRAIT 112528.1* 6.906S 156.035E 33N 4.3 1.3 19 SOLOMON ISLANDS 112915.4* 10.657S 164.292E 33N 4.3 1.1 15 SANTA CRUZ ISLANDS REGION 160251.0 4.371N 76.547W 100G 4.5 0.9 26 COLOMBIA 165645.0? 25.22 N 142.09 E 33N 4.4 0.8 7 VOLCANO ISLANDS REGION 192802.2* 18.824N 69.140W 33N 4.3 1.1 19 DOMINICAN REPUBLIC REGION 212114.9 38.721N 122.745W 5G 1.2 81 NORTHERN CALIFORNIA. ML 4.0 214248.8* 2.833N 125.551E 200G 4.2 0.8 12 TALAUD ISLANDS, INDONESIA 230102.2 43.973N 139.580E 200G 4.2 0.7 22 EASTERN SEA OF JAPAN 235431.6? 42.94 S 82.88 W 10G 4.2 1.4 12 WEST CHILE RISE DEC 05 000219.3* 15.527S 167.311E 33N 5.0 5.2 1.2 60 VANUATU ISLANDS 002506.1 44.135N 150.395E 33N 5.0 0.8 58 EAST OF KURIL ISLANDS 005120.5* 35.316N 78.464E 33N 3.9 1.3 21 EASTERN KASHMIR 035101.6 14.451N 92.252W 33N 5.3 5.2 0.9 102 NEAR COAST OF CHIAPAS, MEXICO. 041607.3* 49.467N 155.533E 33N 4.4 1.1 27 KURIL ISLANDS 065620.3? 18.17 S 172.71 W 33N 4.5 0.8 17 TONGA ISLANDS REGION 102245.8? 14.41 S 166.92 E 200G 4.6 0.9 16 VANUATU ISLANDS 103853.0 16.292N 120.569E 33N 5.2 4.5 1.2 42 LUZON, PHILIPPINE ISLANDS 131216.3* 9.391N 126.406E 33N 4.6 1.1 23 MINDANAO, PHILIPPINE ISLANDS 145950.6* 5.068N 78.332W 25* 4.8 1.1 21 SOUTH OF PANAMA 153853.4 60.551N 152.098W 133 4.0 0.8 45 SOUTHERN ALASKA 170635.7 36.295N 120.436W 10G 0.8 57 CENTRAL CALIFORNIA. ML 3.5 (GS). 172453.2* 65.750S 175.881W 10G 4.6 1.1 25 PACIFIC-ANTARCTIC RIDGE 185844.3? 17.51 S 179.93 W 600G 4.6 1.1 18 FIJI ISLANDS REGION 202942.9* 11.591N 92.715E 33N 4.5 1.1 20 ANDAMAN ISLANDS, INDIA 212836.9* 10.692S 112.079E 33N 3.5 1.1 10 SOUTH OF JAWA, INDONESIA 232907.0* 0.303S 125.187E 33N 5.3 1.3 22 SOUTHERN MOLUCCA SEA DEC 06 003648.7 36.044N 117.626W 5G 0.9 36 CALIFORNIA-NEVADA BORDER. ML 3.0 033032.5 34.173N 141.698E 33N 5.1 5.4 1.4 43 OFF EAST COAST OF HONSHU, JAPAN 135314.4& 39.706N 110.658W 3 7 UTAH.. ML 3.4 183038.2 36.026N 117.578W 5G 1.1 48 CALIFORNIA-NEVADA BORDER. ML 3.5 230624.6* 33.214N 140.770E 44* 5.1 0.9 27 SOUTH OF HONSHU, JAPAN DEC 07 120314.6? 35.49 S 71.48 W 100G 4.0 0.9 9 CENTRAL CHILE 203224.2* 45.684N 151.498E 33N 4.8 0.8 53 KURIL ISLANDS 203619.6 51.651N 173.320W 33N 4.9 0.9 54 ANDREANOF ISLANDS, ALEUTIAN IS. 230044.2* 5.361S 145.979E 100G 4.7 1.0 10 EASTERN NEW GUINEA REG., P.N.G. DEC 08 034804.9 44.013N 129.602W 10G 5.1 0.9 52 OFF COAST OF OREGON 054218.8 44.165N 129.294W 10G 4.6 0.8 81 OFF COAST OF OREGON 060523.7 56.724N 152.002W 33N 5.3 5.2 0.8 77 KODIAK ISLAND REGION 164202.0 38.715N 119.484W 5G 1.2 44 CALIFORNIA-NEVADA BORDER. ML 3.0 164251.8 38.668N 119.467W 5G 3.2 1.1 70 CALIFORNIA-NEVADA BORDER. ML 3.6 191754.1* 27.926S 74.119E 10G 5.2 5.2 1.4 18 MID-INDIAN RIDGE. Mw 5.4 (HRV). 235205.4* 14.929N 93.977W 33N 4.5 1.0 25 NEAR COAST OF CHIAPAS, MEXICO DEC 09 035415.7 8.052S 107.464E 52D 5.5 5.7 1.2 43 JAWA, INDONESIA. Mw 5.9 (GS), 054221.0* 14.968N 93.986W 33N 4.4 0.9 18 NEAR COAST OF CHIAPAS, MEXICO 060555.6 38.709N 119.488W 5G 1.1 39 CALIFORNIA-NEVADA BORDER. ML 3.2 073917.1 38.679N 119.551W 5G 1.0 33 CALIFORNIA-NEVADA BORDER. ML 3.0 092140.4 39.585N 120.161W 5G 0.3 18 NORTHERN CALIFORNIA. ML 2.8 103619.4* 29.904N 42.673W 10G 5.0 0.5 9 NORTHERN MID-ATLANTIC RIDGE 112848.5 29.818N 42.842W 10G 5.8 6.2 1.2 114 NORTHERN MID-ATLANTIC RIDGE. 130652.9* 0.413S 80.653W 33N 4.6 0.8 11 NEAR COAST OF ECUADOR 174553.1* 46.285N 150.651E 33N 4.9 0.5 30 KURIL ISLANDS 192305.9* 36.136S 100.175W 10G 4.7 1.1 16 SOUTHERN PACIFIC OCEAN DEC 10 083618.2 0.779N 29.978W 10G 6.0 6.2 0.9 79 CENTRAL MID-ATLANTIC RIDGE. 092324.8* 0.685N 29.584W 10G 5.0 0.7 14 CENTRAL MID-ATLANTIC RIDGE 160302.1 12.407N 88.957W 33N 5.3 5.1 1.1 53 OFF COAST OF CENTRAL AMERICA 165739.4 51.701N 177.551W 10G 5.4 4.8 0.9 74 ANDREANOF ISLANDS, ALEUTIAN IS. 172238.1? 52.00 N 177.51 W 10G 4.6 0.5 12 ANDREANOF ISLANDS, ALEUTIAN IS. 205529.8 51.650N 177.587W 10G 4.8 0.8 31 ANDREANOF ISLANDS, ALEUTIAN IS. 223310.6* 51.775N 177.526W 10G 4.8 0.8 17 ANDREANOF ISLANDS, ALEUTIAN IS. 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.