5.9 Earthquake Hit Southern California , page 10
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reply posted on 15-6-2010 @ 09:02 PM by Oozii
reply to post by TiM3LoRd



Could be. Since I was young, I always here people from around here talking about "Earthquake Weather".

It got windy all of a sudden about an hour ago aswell. It's been 100 - 105 Degree's here for about 2-3weeks, and with hardly any wind.

I also found this bit of information;


Plate-Tectonic and Earthquake Setting of the Salton Trough



Southern California straddles two of the Earth's plates that move past each other,
the Pacific and North American plates (Fig. 1). The Pacific plate is moving relatively to
the northwest and consists of the region southwest of the San Andreas fault and
southwest of the Gulf of California. (This large plate extends all the way to Japan). The
North American plate is moving relatively to the southeast and consists of the region
that is northeast of the San Andreas fault and northeast of the Gulf of California. (This
large plate extends eastward to the center of the Atlantic Ocean). The boundary
between the two plates is quite crooked and includes places where there are steps to the
right, such as in the Gulf of California and Salton Trough, and at least one place where
there is a big bend to the left, in the Transverse Ranges of southern California. Where
the plate boundary is oriented in the direction of motion between the plates, the plates
slide past one another without colliding or pulling away from one another. Where the
plate boundary steps to the right, holes (rifts) in the Earth's crust occur, and when the
boundary bends to the left, pile-ups (mountains) are generated (See Fig. 1). The Gulf of
California and its onshore extension, the Salton Trough (which includes Mexicali,
Imperial, and Coachella Valleys), are located over a series of rifts in the Earth's crust,
which are filling with sediment from above, chiefly from the Colorado River, and
magmatic material from below. The Cerro Prieto geothermal field in Mexico and the
Brawley Seismic zone in the U.S. are located above two of these rifts, and young
volcanoes in these locations are evidence of intrusion of magma from below. These two
regions are linked by a plate-boundary segment known as the Imperial fault. The Cerro
Prieto rift is linked by the Cerro Prieto fault to the next rift south in the Gulf of
California, and the Brawley Seismic Zone is linked by the San Andreas fault to a
junction of three plates at Cape Mendocino, California (well beyond the north end of
Fig. 1). In addition to the plate-boundary faults, there are faults on either side that take
up some of the motion between the North American and Pacific plates, including the
Elsinore and San Jacinto faults and faults in the Mojave Desert (see below).

View The PDF.

Or Here (First Result)

[edit on 15-6-2010 by Oozii]


reply posted on 17-6-2010 @ 09:37 AM by facchino
Quakes near ocotillo, CA
15th June = 443
16th June = 163
17th June = 40 So Far:
This is based on the last reading took from
earthquake.usgs.gov... which was this:
3.3 2010/06/17 07:23:34 32.712N 115.977W 3.3 4 km ( 2 mi) SSE of Ocotillo, CA

I am no expert on earthquakes - but just a very brief glance through a few days history shows that other large earthquakes happened recently and did not generate almost 700 pre/after shocks like this one did, even though they were larger than the 5.7 that hit here?
It reads like one long quake?
I am confused as to how things are labelled as aftershocks - if we had a 2+ quake in the UK it counts as a quake, so why is it any different elsewhere. If you look at it that way would that not mean there have been 500+ 2+ quakes in the past 3 days, which surely is cause for concern.
Hope someone with more knowledge than I can explain this or at least point out historical data that shows this to be completely normal behaviour?

Concerned Regards


reply posted on 17-6-2010 @ 10:14 AM by MoorfNZ
reply to post by facchino



Oneof the reasons so many quakes are showing up is that the USGS report lower quakes in the U.S. than they do elsewhere. Elsewhere when there is a big quake there are also hundreds of aftershocks (say, Indonesia) but because USGS only reports over (I think) 3.5 or 4.5 you don't see many of them. Because of the location of this quake, in a U.S. state, pretty much everything is being recorded and listed.


reply posted on 17-6-2010 @ 11:08 AM by Oozii
Originally posted by MoorfNZ
Washington's turn:

Magnitude 4.2
Date-Time

* Thursday, June 17, 2010 at 14:23:24 UTC
* Thursday, June 17, 2010 at 07:23:24 AM at epicenter
* Time of Earthquake in other Time Zones

Location 46.118°N, 120.745°W
Depth 2.2 km (1.4 miles) set by location program
Region WASHINGTON
Distances

* 31 km (19 miles) S (186°) from White Swan, WA
* 34 km (21 miles) N (10°) from Goldendale, WA
* 35 km (22 miles) SSW (206°) from Harrah, WA
* 154 km (95 miles) ENE (69°) from Vancouver, WA

earthquake.usgs.gov...


Thats what it seems like, kinda made me say "wow". And Southern Cali / Baja California is still getting minor 3.0 + and a few 4.0 +.


Earthquake Details
Magnitude 3.4
Date-Time Thursday, June 17, 2010 at 15:12:07 UTC
Thursday, June 17, 2010 at 08:12:07 AM at epicenter
Time of Earthquake in other Time Zones

Location 32.466°N, 115.612°W
Depth 2 km (1.2 miles)
Region BAJA CALIFORNIA, MEXICO
Distances 25 km (15 miles) SSW (213°) from Mexicali, Baja California, Mexico
26 km (16 miles) SSW (204°) from Calexico, CA
31 km (19 miles) SSW (195°) from Heber, CA
132 km (82 miles) E (93°) from Tijuana, Baja California, Mexico

Location Uncertainty horizontal +/- 1.2 km (0.7 miles); depth +/- 2 km (1.2 miles)
Parameters Nph=054, Dmin=23 km, Rmss=0.38 sec, Gp=198°,
M-type=local magnitude (ML), Version=1
Source California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR

Event ID



Thats around 20mins away, and also had damage when the 7.2 struck Apr. 5th.



[edit on 17-6-2010 by Oozii]
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