Geology / Earthquakes

Time (GMT)	Longitude	Latitude	Magnitude	Notes
01:49:58 AM	-149.984	63.429	2.7	Central Alaska
01:43:33 AM	-136.575	59.322	2.6	Southeastern Alaska
12:44:25 AM	-178.805	51.614	3.1	Andreanof Islands; Aleutian Islands; Alaska
11:54:47 PM	103.576	31.307	5.3	eastern Sichuan; China
11:46:19 PM	103.501	31.319	5.4	eastern Sichuan; China
11:23:22 PM	-150.995	63.266	2.5	Central Alaska
10:59:09 PM	-173.885	50.937	3.0	Andreanof Islands; Aleutian Islands; Alaska
10:57:46 PM	122.515	24.041	5.0	Taiwan region
10:41:01 PM	-161.535	54.641	2.9	Alaska Peninsula
10:02:14 PM	-67.829	19.023	2.9	Dominican Republic region
09:08:15 PM	103.424	31.624	4.7	eastern Sichuan; China
08:52:56 PM	-67.521	19.356	2.9	Puerto Rico region
08:51:26 PM	104.958	32.313	4.8	Sichuan-Gansu border region; China
08:45:31 PM	104.420	31.759	5.3	eastern Sichuan; China
08:12:29 PM	-65.035	18.814	3.1	Virgin Islands region
08:08:48 PM	103.906	31.420	5.6	eastern Sichuan; China
06:55:21 PM	104.850	32.223	4.4	Sichuan-Gansu border region; China
05:54:32 PM	103.492	31.250	5.1	eastern Sichuan; China
05:52:23 PM	104.449	31.891	4.8	eastern Sichuan; China
05:26:13 PM	179.663	51.190	3.1	Rat Islands; Aleutian Islands; Alaska
05:03:10 PM	103.586	31.133	4.9	eastern Sichuan; China
05:02:55 PM	-149.095	62.760	2.9	Central Alaska
03:28:53 PM	103.509	31.056	5.1	eastern Sichuan; China
03:05:31 PM	103.704	31.256	5.1	eastern Sichuan; China
02:46:07 PM	105.610	32.730	5.1	Sichuan-Gansu border region; China
02:15:26 PM	104.613	32.140	5.1	Sichuan-Gansu border region; China
01:40:54 PM	103.518	31.038	4.8	eastern Sichuan; China
12:50:34 PM	-153.026	56.471	5.1	Kodiak Island region; Alaska
12:28:24 PM	-165.918	54.001	2.7	Fox Islands; Aleutian Islands; Alaska
12:21:36 PM	-176.639	51.636	3.3	Andreanof Islands; Aleutian Islands; Alaska
12:15:41 PM	104.623	31.898	4.9	eastern Sichuan; China
11:50:41 AM	-118.720	34.387	2.9	Greater Los Angeles area; California
11:16:48 AM	-144.259	63.089	2.6	Central Alaska
11:11:02 AM	103.693	31.249	5.8	eastern Sichuan; China
10:23:40 AM	103.413	30.992	5.1	eastern Sichuan; China
09:52:12 AM	-27.296	47.347	5.0	northern Mid-Atlantic Ridge
09:42:25 AM	104.116	31.519	5.5	eastern Sichuan; China
09:32:08 AM	-64.658	19.361	2.7	Virgin Islands region
09:23:34 AM	104.894	32.142	4.9	Sichuan-Gansu border region; China
09:07:00 AM	103.788	31.255	5.1	eastern Sichuan; China
08:47:25 AM	105.029	32.215	5.0	Sichuan-Gansu border region; China
08:26:12 AM	103.957	31.399	4.9	eastern Sichuan; China
08:21:40 AM	104.085	31.542	5.2	eastern Sichuan; China
08:10:59 AM	103.574	31.225	5.2	eastern Sichuan; China
07:54:54 AM	-149.006	63.203	2.8	Central Alaska
07:34:42 AM	103.799	31.278	5.4	eastern Sichuan; China
06:54:18 AM	103.826	31.155	5.7	eastern Sichuan; China
06:43:14 AM	103.761	31.225	6.0	eastern Sichuan; China
06:28:00 AM	103.367	31.021	7.9	eastern Sichuan; China
02:21:49 AM	152.537	46.614	4.9	Kuril Islands

Data kindly supplied by : U.S. Geological Survey

Notes

1. The time of the earthquake is given in Greenwich Mean Time (GMT) or now known as Universal Co-ordinated Time (UCT). You may need to take into account of local time zone.

2. The magnitude of the earthquake is not a linear scale. Each unit represents that the earthquake is ten times greater - it is a logarithmic scale. This is the most important thing to bear in mind. The difference between magnitude 3.0 and 6.0 is a thousand times, and 9.0 is a million times stronger than 3.0.

Magnitude	Effects	Occurrences each year
less than 2.5	Not usually felt, detected only by sensitive seismographs	millions
2.5 to 5.4	Often felt, objects may shake, but only causes minor damage	40,000
5.5 to 6.0	Limited localised damage to buildings close to epicentre	800
6.1 to 6.9	May cause considerable damage in heavily populated areas	150
7.0 to 7.9	A Major earthquake with potentially serious damage	15
over 8.0	Devastating at epicentre, felt thousands of miles away	1

3. The epicentre of an earthquake is located vertically above the source. The depth of the earthquake will determine how significant the effects of the quake, shallow ones are normally more destructive.

4. In areas where earthquakes are frequent the infrastructure is designed to cope with all but the very strongest earthquakes. A large earthquake in an area where they rarely occur would have a much greater effect.

5. The size of circle denoting the earthquake is proportional to its magnitude.

6. The color of the circles represents the time in GMT of the quake. Blue ones are early in the day and the circles become progressively redder as the day wears on.