NEWS: 6.2 Quake in Sumatra Jan 6, 2005, page 1
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Topic started on 6-1-2005 @ 01:08 AM by Byrd
The USGS has just reported a magnitude 6.2 earthquake in: "NORTHERN SUMATRA, INDONESIA Thursday, January 06, 2005 at 00:56:26 UTC." It's 60 km (40 miles) WSW of Banda Aceh, Sumatra, Indonesia, the hardest hit area in the tsunami.





neic.usgs.gov
Magnitude 6.2 NORTHERN SUMATRA, INDONESIA

Magnitude 6.2
Date-Time Thursday, January 06, 2005 at 00:56:26 (UTC) - Coordinated Universal Time
Thursday, January 06, 2005 at 07:56:26 AM local time at epicenter
Time of Earthquake in other Time Zones
Location 5.31N 94.82E
Depth 22.4 kilometers
Region NORTHERN SUMATRA, INDONESIA
Reference 60 km (40 miles) WSW of Banda Aceh, Sumatra, Indonesia
335 km (210 miles) SSE of Misha, Nicobar Islands, India
1125 km (700 miles) SW of BANGKOK, Thailand
1830 km (1140 miles) NW of JAKARTA, Java, Indonesia

Location Quality Error estimate: horizontal +/- 6.9 km; depth +/- 21.0 km
Location Quality
Parameters Nst=144, Nph=144, Dmin=1574.6 km, Rmss=0.72 sec, Erho=6.9 km, Erzz=21.0 km, Gp=72.3 degrees
Source USGS NEIC (WDCS-D)




Please visit the link provided for the complete story.




[edit on 6-1-2005 by Banshee]


reply posted on 6-1-2005 @ 05:15 AM by Phoenix
I certainly cannot vouch for this guys methods or predictions but the graph seems to a telling instrument showing an increasing magnitude of quakes when there should be a drop off in magnitude of aftershocks.





January 2, 2005
By Stan Deyo


After the 7.2, 8.1 and 9.0 quakes of last week, pressure should have been significantly reduced in the Southern Hemisphere. However, this quake trend line indicates just the opposite. Pressure is rebuilding and earthquakes are increasing in magnitude by 20%. Earthquake energy currently released is at least 10 times what it was a week ago.


I am no geology expert so I have no way to interpret this information. All I have is my own recollections of past accounts of other earthquakes where soon after there were significant aftershocks that died down in intensity.

This episode seems to be very different.


reply posted on 6-1-2005 @ 09:09 AM by Nygdan
Originally posted by rg73
I'm throwing this out to anyone with some geology knowledge (because mine is pretty limited), but is this a normal amount of activity after a quake of that magnitude? Looking at the USGS website it appears that quakes of 5.0+ have been happening almost every few hours almost continuously since the 9.0.

There are thousands of 5.0 quakes every year.
Having grown up in southern California and been through many quakes myself, I'm familiar with aftershocks, but nothing like that.

The san andreas is one fault, actually its a series of microfaults in some parts, and what you have is the last bits of i think the juan de fuco plate being subducted underneath north america. In the rest of the ring of fire, there are not just double, not just triple, but quadruple plate boundaries. Its a whole different world from california.



I'm not one of these nutters who thinks this is the end of the world, or the poles are shifting or whatever, but I'm curious as to whether it is possible to have periods of dramatically increased seismic activity (e.g. having major quakes constantly for months)
I don't know, you'd think so, but apparently it doesn't happen. I think this is a 'full moon babies' case.

Lemme 'splain. For a long time people thought that more babies were born on a full moon, for whatever the reason. Nurses actually confirmed it. But when the records were checked, it was completely untrue. Everyone had an expectation that it should be true, so they took more note of stuff on those occasions. Full Moon out, check, crap look at all these babies. No full moon, well, there's lots of babies, but no full moon, so forget about it.

Here its, wow, what a huge earth quake. Then everytime there is an earthquake in that part of the world, its going to get noticed, even get reported on the news and multiple newssites. So it seems like there is a ton of stuff going down.


From what I've read of the Alaska 9+ quake I never recall reading anything about continuous major aftershocks for weeks afterwards.

I don't think that these are necessarily aftershocks. Thats a region where there are constant unrelated (well, sort of) earthquakes.
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