So Far, 2007 is a Shaking Year - Earthquake Parameters Changed

Shaker .Stats

 

http://standeyo.com/NEWS/07_Earth_Changes/070912.EQ.stats.html

 

Aerial view of collapsed sections of the Cypress viaduct of I-880, October 17, 1989, Loma Prieta, California [H.G. Wilshire, USGS]

In the U.S., earthquakes pose significant risk to 75 million Americans in 39 states. —USGS Jan. 2004 From 1975-1995 only four states did not have any earthquakes: Florida, Iowa, North Dakota, and Wisconsin

September 12, 2007 Holly Deyo 2007 is shaping up to be a big-bang-year for earthquakes! Today's 8.4 Indonesian event has been followed by numerous large aftershocks. Below you will find USGS earthquake statistics for the last 16 years. At the far right are two columns in purple and green. These compare the actual number of 2007 quakes to what usually occurs in any year and the percentage fulfilled for each magnitude. In September 2003, USGS made an 'adjustment' to quake averges. The number of Richter 7's, 8's and 9's was revised DOWNWARD based on data since 1900. Instead of 2 magnitude 8's, now only 1 is considered normal. As of today's, we've seen 4. Averages for magnitudes 4, 5 and 6 were revised UP based on observations since 1990. The light green column reflects these 'new norms' while the light purple column shows what used to be considered average. Either way, Richter 8's are definitely up for this year. So are all of the other magnitudes except Richter 7's, looking at the pre--2003 figures. It is likely Richter 7's are lower due to the higher number of mag. 8's occurring. This indicates more energy is being released. To see the percentage of quakes occurring for either the new or old figures, look at the dark purple and darker green columns. As for Richter 4, 5 and 6 events, we have either already exceeded expected quake numbers (by the old norms) or are very close to meeting the averages based on the new norms. To say the least, 2007 is busy and there are nearly four months to go.

GLOBAL EARTHQUAKES JANUARY 1, 1992 - SEPTEMBER 12, 2007 (Sept. 12 is a partial count)

Mag.	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	"Old" Annual Ave.	thru 9-12 to "Old" Ave.	"New" Annual Ave.	thru 9-12 to "New" Ave.
8.0 - 9.9 Great	0	1	2	3	1	0	2	0	4	3	1	1	2	1	1	4	2	200%	11	400%
7.0 - 7.9 Major	24	15	13	22	21	20	14	23	16	15	12	16	14	11	11	6	18	33%	172	35%
6.0 - 6.9 Strong	163	141	161	185	160	125	113	123	153	124	130	145	146	154	139	118	120	98%	1342	88%
5.0 - 5.9 Moderate	1,521	1,449	1,542	1,327	1,223	1,118	979	1,106	1,345	1,243	1,218	1,252	1,637	1,954	1,529	1,098	800	137%	13192	83%
4.0 - 4.9 Light	5,153	5,034	4,544	8,140	8,794	7,938	7,303	7,042	8,084	8,084	8,584	8,454	10,783	13,702	13,048	7,819	6200	126%	13,000	60%
Deaths	3,814	10,036	1,038	7,949	419	2,907	9,430	22,711	231	35,000- 40,000*	1,712	43,819	284,010	82,364	6,605	681	10,000	7%	10,000	7%

¹ Based on observations since 1900.
² Based on observations since 1990.

*NOTES: At the end of September 2003, the USGS adjusted earthquake global averages for magnitudes 4, 5, 6 and 7. Most have increased, one magnitude decreased in shaker averages. This indicates an overall increase in earthquake activity. To get a fair comparison, both the "old" and "new" averages are included in the chart above.

The exact number of deaths from the January 26, 2001 India earthquake will never be known. According to the Red Cross, "Death toll reports vary widely, with some ranging from more 20,000 to as many as 100,000."

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