6.9 Earthquake in Baja . . . felt in S. California (Updated to 7.2)

USGS ^ | April 4, 2010 | USGS

[TankerKC]

Wow...that was a good shake...it went on for quite a while. Everybody ok?

[rintense]

I thought it was ironic Africa was the only continent to be livable. And if people there were pretty much unaffected by the celestial cross (cosmic alignment), then wouldn't they pretty much have a negative view of those who arrived on the ships?

Personally, I liked the movie 'Knowing'. Now THAT scared the bejesus outta me. When they revealed what EE stood for, I got chills down my spine.

[Strategerist]

This one has the best abstract, but is not available free full-text online.

Science 6 June 2008:
Vol. 320. no. 5881, pp. 1323 - 1325
DOI: 10.1126/science.1155030
Prev | Table of Contents | Next

Reports
The Aftershock Signature of Supershear Earthquakes
Michel Bouchon1* and Hayrullah Karabulut2

Recent studies show that earthquake faults may rupture at speeds exceeding the shear wave velocity of rocks. This supershear rupture produces in the ground a seismic shock wave similar to the sonic boom produced by a supersonic airplane. This shock wave may increase the destruction caused by the earthquake. We report that supershear earthquakes are characterized by a specific pattern of aftershocks: The fault plane itself is remarkably quiet whereas aftershocks cluster off the fault, on secondary structures that are activated by the supershear rupture. The post-earthquake quiescence of the fault shows that friction is relatively uniform over supershear segments, whereas the activation of off-fault structures is explained by the shock wave radiation, which produces high stresses over a wide zone surrounding the fault.

[A_perfect_lady]

Dan Tana’s is pretty cool. I love my neighborhood, but yes, it’s very gay. It’s a good place to be a woman alone if you just don’t want to be bothered, so I move about quietly and am happy. But yes... every gay pride parade passes within about 150 steps of my front door.

[Godzilla]

that is as probably non-technical as it can be presented. The ‘shock wave’ are the seismic waves passing through the earth. If the fault ruptures faster than wave promulgation is what is being spoken about.

[ErnBatavia]

reminds me of the old line...."Who are you going to try and please with THAT thing??"

.

.

.

Answer: "Me!"

[al baby]

BREAKING NEWS: Fox news is live at the scene... local So Cal resident is traumatized after her favorite knickknack is broken from this afternoons devastating 7.2 earthquake... more to follow.

[JustPiper]

Wanna come hear to Dixie Alley, tornado season?-g-

[ArmstedFragg]

Only in Southern California would be the first earthquake video coverage be multiple shots of swiming pools overflowing.

[umgud]

bump

[GeronL]

We can depend on FNC for those important announcements!

Any news out of, oh I dunno, Mexico?? Where the quake actually hit??

[JustPiper]

I think the live feed of the swimming pools was cool

[Sarah Barracuda]

I heard some LCD TV’s fell..damn, gotta get mine mounted on the wall

[GeronL]

Shouldn’t we be getting news out of Mexico??

[onyx]

Revised to 7.2 !
Dammit. I missed it and still no call from my kids.
I guess they missed it, too.

[advertising guy]

same thing here in Phoenix...water just jolting in the bathtub and sloshed for a few minutes as well, then realized the 3 1/2 year old grandson farted

..never mind

[Sarah Barracuda]

I LOVE FNC but they always seem to be late about a half an hour after the story breaks

[JustPiper]

The Knowing was awesome

[Viking2002]

We have three Dachshunds who go by aliases (and answer to them, too): Pigg, Short Legs, and Scrat. Pigg is the one who won't budge unless food is involved. And Scrat is a mini who looks and acts exactly like 'Scrat' from Ice Age, hence the nickname. We've been on the lookout for a stuffed acorn chew toy for two years, just so we can get a good pic of her doing what she does best. LOL

[Shady]

Yes and it was the failed policies of the last 8 years that caused this catastrophe....
(News media fail to recognize that BO included his own first 1.33 years as Pezident in that disclaimer....)

[BunnySlippers]

Above all else, get the hot water heater strapped in. )