Earthquake in BRC

ygmir · Post by **ygmir** » Mon Jan 26, 2009 8:53 pm

Laughing Forest wrote:
that's one thing I love about earthquake predictors.......
every year, they say we'll have a "big one" in the next 10-20 years.........

at some point, we'll have one, and, they'll say
"see, I predicted this _______years ago"............
Except that geological prediction is based on a gap of time in which a statistical probability is assigned.

It's not like the science is putting people off with continued delays of what's inevitable. It really is very different from those 'predicting' the second coming and all that horse shit.

that means what?

gyre · Post by **gyre** » Mon Jan 26, 2009 10:06 pm

ygmir wrote:

that means what?

The world ends in 2025, with the giant asteroid.

Don't worry until then.

Tinkerbell · Post by **Tinkerbell** » Mon Jan 26, 2009 10:08 pm

who wants to throw a party on 2025!!! woo end of the word... gyre said soo..... w00t

gyre · Post by **gyre** » Mon Jan 26, 2009 10:14 pm

I'm up for that!

Just be careful about that "living every day as if it's your last" kind of thing.
I tried that once.

It turns out to not be such a good idea, if there actually is a next day.
And now there is a state I can't visit.

ygmir · Post by **ygmir** » Tue Jan 27, 2009 6:43 am

Tinkerbell wrote:who wants to throw a party on 2025!!! woo end of the word... gyre said soo..... w00t

oh sure, now you're dissing the Hopi, Aztecs, Maya, Chinese, probably even Nostradamus...........
they all call for the world to end in 2012, do they not?

Jeeze, PC here, don't offend anyone.............

Isotopia · Post by **Isotopia** » Tue Jan 27, 2009 11:07 am

and most things ultimately accepted by geologists are first ridiculed and then subject[ed] to rigorous review and lots of initial skepticism.

Plate tectonics is actually an assemblage of theories from different disciplines falling under the broad rubric of geology. The theory was really scrutinized during the 50's when some of the very first, very general suggestions of plates and plate movement dynamics were starting to pop up in academic circles.

I too am old enough to remember being taught in elementary school that the formation of the pacific ocean was probably due to collisional forces associated with the moon bumping the Earth at some point in time. Given the area of the country that was a radical statement in and of itself considering many people in that same area continue to believe (and try to legislate) the idea that the Earth is ~ 5000 years old and that Jesus and other folks co-existed with dinosaurs.

gyre · Post by **gyre** » Tue Jan 27, 2009 11:57 am

I live near the center of us earthquake activity and we had a 2.8 the other day.
There was no damage, but I followed instructions and panicked anyway.

ygmir · Post by **ygmir** » Tue Jan 27, 2009 12:04 pm

you're in L.A.?

I do love geology.......fascinating...........I roam the desert rockhounding,
I even work with rock in my business.....and, amateur prospector.............living in the mother load.............

my point a while back was not to dis respect geologists, or geology, but, to point out, that, certain people predict an earthquake in the next 10 years, every year..........well, at some point, they'll be right..........and, claim they predicted it.
I mostly refer to the tabloid, psychic, "in touch with the earths pulse" sort of predictors............

gyre · Post by **gyre** » Tue Jan 27, 2009 12:21 pm

I'm in Memphis.
The most recent one was in arkansas.
Near the New Madrid area, so far the most violent fault known.
Early days yet on faults.
The northeast may have the most dramatic quakes.
We'll see.

The logic of geology is fascinating.
The way that a layer can be dated so precisely, not by one thing, but a combination of facts, vague in themselves, but narrowing the time for a specific sample to a certainty, is baffling until you see it done.

http://earthquake.usgs.gov/regional/sta ... 1-1812.php
http://en.wikipedia.org/wiki/New_Madrid_Fault
http://en.wikipedia.org/wiki/New_Madrid_Earthquake

ygmir · Post by **ygmir** » Tue Jan 27, 2009 12:48 pm

yeah, that's where I thought you were.......but, when you said the center of earthquake activity.............well.........in sheer number......L.A.......but, I understand why you mean by severity...........
although, that may be debatable, depending on parameters such as time/era..........

Post by **Elderberry** » Tue Jan 27, 2009 2:15 pm

and if you live there or not. Of course, living in Los Angeles, I know we have the most and the strongest earthquakes! LOL At least that's how they feel to me when the house starts shaking!

JK

gyre · Post by **gyre** » Tue Jan 27, 2009 7:40 pm

Some think the faults that move the least often will be the most violent.
There are records of past quakes in the earth and New Madrid seems the most dramatic past and recorded, but the new york coast may have faults that don't move for a very long time, yet there is energy there.
So New York may be where the big one is.
Faults that have never been active during the short time man has measured have appeared in california too.

Surprize!!

Steady earthquakes may be much safer than the alternative.

littleflower · Post by **littleflower** » Tue Jan 27, 2009 9:27 pm

that may be true if you are unlucky enough to be in a 1,000 year event ... but california has the edge of the pacific plate running through it, so we get a lot of smaller earthquakes, and can get 8+ quakes as well. and, while you can prepare for them, it's still impossible to prevent destruction completely. believe me, a 6.7 quake is no fun ...

i have read that the effects are different depending on whatever the soil you are on is like ... if you are in foothills you are safer than in swamps or landfill, because the earth is more solid. also, thrust quakes tend to be more destructive.

in any case, they are terrifying. the northridge was quake was just awful. and i actually felt the 1989 loma prieta earthquake in torrance! that was another nasty day...

Post by **Elderberry** » Tue Jan 27, 2009 9:39 pm

I slept right through the Northridge quake. The neighbors woke me up pounding on the door to find out if I was OK. Earthquake? What earthquake? LOL

JK

littleflower · Post by **littleflower** » Tue Jan 27, 2009 10:04 pm

were you in weho?

that's funny....

Post by **Elderberry** » Wed Jan 28, 2009 12:03 am

Yep, just a few blocks from here on Croft and Waring.

JK

wedeliver · Post by **wedeliver** » Wed Jan 28, 2009 12:16 am

I was at work at Packard Bell in Chatsworth. Phone support, standing up looking over the top of my cube when the everything started to shake, I got under my desk (we were on the 2nd floor) but I wasn't touching the floor, like weightless in the air. It lasted what seemed like a really long time, maybe a couple minutes. It was pitch dark, the drop ceiling had done just that and you had to climb over things in the dark. Then a light up ahead, behind where we hung our coats and stuff, emergency light came on over the back staris. I later found out that the front stairs had collapsed and one guy broke his collar bone trying that route in the dark.

I drove to my house near the corner of Tampa and Roscoe. About a mile from the epecenter at Wilbur and Saticoy. I don't know how I made it past all the gas leaks, breaks in the road, debris etc, but I pulled onto the front lawn of my house and found my wife tring to open the front door. I climbed in through a window and we got the door to open, but it would'nt fit in that space anymore. I found out that she had ran into the boys room, jumped onto the lower bunk of the bunk beds to make sure Mikey, who was sleeping in the top bunk, didn't fall on the floor or something. The bunk bed managed to move across the bedroom floor till she was against the wall and the bunk bed blocked the door. Mikey slept through it all. (he is 21 now and he still sleeps till 2:00 oclock everyday and you cannot wake him up no matter what you try, I think it is a subconscious thing today and that is where he feels safe or something. I am sure he was scared by some of the aftershocks.

Speaking of aftershocks, I was unaware this could happen until the Northridge quake even though I had been though a number of shakers. What I am speaking of is the "ground wave". I watched a tree that was standing straight up, the ground wave hit the tree and it went 30 degrees over then snapped right back up again. That was a 5.x aftershock. We went over and played on the train that derailed over by the Northridge Mall. My bride worked at Sears in the Northridge Mall, it collapsed. Along with the parking structur where a guy was found alive in his street cleaner under 6 floors of concrete. Also It was interesting how the sidewalk in someplaces (usually north/south) would have 2 pieces standing maybe 2 feet in the middle in a upsidedown V.

ygmir · Post by **ygmir** » Wed Jan 28, 2009 8:53 am

cool story.
I've seen the 'ground wave', too, in the 72? Oroville quake.......I was working at a gas station,and, laying under a car at the pumps checking something, the car starts bouncing, I yell not to move it because I'm under there, thinking someone was getting in.......

I turn my head sideways, so, am looking right at ground level, and, see "waves" coming down the road towards me.............wow, that was something..........

It really made the high, Union 76 station sign across the street rock. It's about 80' high and I bet it was moving 6' during the sway.........

Isotopia · Post by **Isotopia** » Wed Jan 28, 2009 12:23 pm

I understand why you mean by severity...........
although, that may be debatable,

Not much to debate. Except that the magnitude was inferred rather than actually measured. Still, the New Madrid earthquake was strong enough to cause the Mississippi River to flow backwards on itself.

http://www.showme.net/~fkeller/quake/mi ... ckward.htm

Post by **mdmf007** » Wed Jan 28, 2009 1:32 pm

Isotopia wrote:
I understand why you mean by severity...........
although, that may be debatable,
Not much to debate. Except that the magnitude was inferred rather than actually measured. Still, the New Madrid earthquake was strong enough to cause the Mississippi River to flow backwards on itself.

http://www.showme.net/~fkeller/quake/mi ... ckward.htm

The new Madrid earthquake did NOT do that. I spilled my plate of grub during the earthquake, got pissed and I made the Mississippi River flow backwards.

littleflower · Post by **littleflower** » Wed Jan 28, 2009 1:59 pm

the new madrid quake did ring bells in boston, i believe.... yikes!

Thecatman · Post by **Thecatman** » Thu Mar 19, 2009 8:34 pm

There was a minor, crybaby, 2.8 quake today. It centered about 18 miles south of Gerlach on the Fox Range Fault zone

gyre · Post by **gyre** » Sat Mar 05, 2011 12:37 pm

Two geo-fracking wells in arkansas have been temporarily stopped to examine suspicion of a connection to earthquakes in the area.
There have been 850 in that vicinity in the last year, of the thousands in this area in that period.
The fault discovered connected has been found to be larger than once thought.

They now think a 6.0 is a possibility.
I think we recently had a 4.7 in that fault area.

Thecatman · Post by **Thecatman** » Sat Mar 05, 2011 4:11 pm

How far is that area from where the several major New Madrid earthquakes that occured in the 1800s. One of them changed the course of the Mississippi River.

Around 9am yesterday morning there was a 2.7 quake near Warrior Point, on the Pyramid Lake fault zone, which runs along highway 95A north, through Fernley, up to and along the west shore of Pyramid Lake.

Isotopia · Post by **Isotopia** » Sat Mar 05, 2011 5:09 pm

That makes sense seeing as spreading block fault basins such as the Great Basin are second only to subduction zones for quake numbers.

dr.placebo · Post by **dr.placebo** » Sat Mar 05, 2011 6:02 pm

Something very interesting is happening on the Big Island at P'u O'o, the main vent for Kilauea. There's a lot of small quakes, and it looks like the floor of P'u O'o has collapsed. For reference:

http://volcanoes.usgs.gov/hvo/cams/POcam/ P'u O'o webcam

http://volcanoes.usgs.gov/hvo/cams/HMcam/ Halema'uma'u vent cam

http://tux.wr.usgs.gov/Maps/155.25-19.5.html Kilauea quakes

http://volcanoes.usgs.gov/hvo/activity/ ... status.php Kilauea status page (daily)

TomServo · Post by **TomServo** » Sat Mar 05, 2011 6:21 pm

ygmir wrote:cool story.
I've seen the 'ground wave', too, in the 72? Oroville quake.......I was working at a gas station,and, laying under a car at the pumps checking something, the car starts bouncing, I yell not to move it because I'm under there, thinking someone was getting in.......

I turn my head sideways, so, am looking right at ground level, and, see "waves" coming down the road towards me.............wow, that was something..........

It really made the high, Union 76 station sign across the street rock. It's about 80' high and I bet it was moving 6' during the sway.........

My girfriend was in Napa, during the 89 quake, here in the bay area. She said the earth looked like a disturbed water bed. I was on a hill in Walnut Creek, and it felt like standing in a row boat. Thank dog for the world series! would have been alot more fatalities on 880.

gyre · Post by **gyre** » Sat Mar 05, 2011 6:55 pm

http://www.ceri.memphis.edu/awareness/nmsz.html
http://en.wikipedia.org/wiki/New_Madrid_Seismic_Zone
http://www.commercialappeal.com/news/20 ... ahoo_feeds
http://www.startribune.com/nation/117408768.html

I think the blue central squares in arkansas are the locations discussed.
http://www.ceri.memphis.edu/seismic/rec ... index.html

It's worth noting that the new zealand earthquake that did so much damage was an aftershock.

http://earthquake.usgs.gov/earthquakes/ ... n=Arkansas

http://www.foxnews.com/scitech/2011/03/ ... ing-wells/#