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(USGS) NewsFlash Did anyboody else feel that, eh?   (earthquake.usgs.gov) divider line 307
    More: NewsFlash, Event ID, Travel Time Residual, QuakeML v1.2RC3, Azimuthal Gap, U.S. Geological Survey  
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29953 clicks; posted to Main » on 28 Oct 2012 at 12:05 AM (2 years ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»


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2012-10-28 01:04:29 AM  

Snarfangel: davidphogan: God-is-a-Taco: davidphogan: God-is-a-Taco: Hmmm yep, that faultline continues its activity as expected.
San Fransisco still unlikely to exist in 10 years.

Wrong fault. Way, way, way wrong fault.

You probably meant Seattle, Vancouver and Portland.

Oops, sorry. Yeah. I was thinking about the last earthquake thread, or was it a SF thread.
They're both overdue for earthquakes.
The SF one is just going to be far worse

Very unlikely. SF isn't capable of over a 7.5 or so. The CSD is capable of a 9.0, and most of the PNW is built on fill and seismically decades behind SF.

PDX didn't even know they could face a major quake until 1990, so they have a lot more buildings that are deathtraps than SF. Seattle's downtown is built on fill that will return to the Sound. The tsunami the rip 9 creates will kill thousands on the OR/WA coast as well.

CA quakes are nothing compared to The Big One the PNW is facing and overdue for.

If Cascadia goes, all of the news shows will say something like "The Pacific Northwest just fell into the ocean. And now let's turn to Brad, with more news on Hurricane Sandy."

/Oregonian.


Pretty much. They'd probably run some stock footage of the MAX and the Space Needle while saying so.
 
2012-10-28 01:05:03 AM  
The CBC is reporting some 'minor' damage in Sandspit. However, there are still ongoing relatively strong earthquakes. Could be a stronger one later.
 
2012-10-28 01:05:35 AM  

Babwa Wawa: eraser8: I've met rude Canadians.

Of course, they were French Canadians.

And by their own reckoning, they aren't Canadian.

True story: after dating my wife for a bit, we went to meet the parents. After about 30 words spoken to the future mother in law, she says, apropos of apparently nothing, "I've taught my daughters that they should leave anyone who beats them." I said something to the effect that I usually wait a few months before starting the beatings. Future father in law laughed. Next summer the FIL and I are going on a whiskey tour of Scotland.


While I can't speak for your wife, your FIL is definitely worth keeping.

I've been drinking too much to weigh in on Mrs. Wawa-in-law.
 
2012-10-28 01:05:47 AM  

Old Huntstein: Kamloops is OK. I repeat, Kamloops is OK.

\Used to live in Sandspit.
\\You have no farkin' idea where that is.


i am a kamloopsian as well, I'm getting drunk just to be safe though
 
2012-10-28 01:07:00 AM  

WhippingBoy: Uhhhh guys... I'm seeing a very large, lizard-like creature rising out of the ocean... what do you think it might be?


Gojira! Gojira!
 
2012-10-28 01:07:58 AM  

davidphogan: Very unlikely. SF isn't capable of over a 7.5 or so. The CSD is capable of a 9.0


Curious, how is this determined?

I get they can rate them for pressure, volatility and such, but to put a cap on capability for a major fault seems... oddly exact and confident.
 
2012-10-28 01:09:06 AM  

WhippingBoy: Uhhhh guys... I'm seeing a very large, lizard-like creature rising out of the ocean... what do you think it might be?


Do you live near Melancholy Cove?
 
2012-10-28 01:09:14 AM  
Something about Gene Masseth's friend?
 
2012-10-28 01:10:04 AM  

davidphogan: Please don't be a precursor to the Big One. Please don't be a precursor to the Big One. Please don't be a precursor to the big one...


These mediocre ones are good. We want more of them. It alleviates the pressure in the fault line, so nothing builds up and we run the risk of getting a Big One some years down the road.
 
2012-10-28 01:10:06 AM  
pubs.usgs.gov
 
2012-10-28 01:10:26 AM  
Italian seismologists in Canada. Go figgur.
 
2012-10-28 01:10:34 AM  

p4p3rm4t3: [pubs.usgs.gov image 580x476]


I see a giant snail.
 
2012-10-28 01:10:45 AM  
Well, it's kind of a big one, actually.

But, it's also the part of Canadia that's practically Alaska, so it's sort of to be expected.
 
2012-10-28 01:11:38 AM  
So your mom was caught having sex?
 
2012-10-28 01:12:23 AM  
i1197.photobucket.com
 
2012-10-28 01:12:32 AM  

God-is-a-Taco: davidphogan:
Very unlikely. SF isn't capable of over a 7.5 or so. The CSD is capable of a 9.0, and most of the PNW is built on fill and seismically decades behind SF.

PDX didn't even know they could face a major quake until 1990, so they have a lot more buildings that are deathtraps than SF. Seattle's downtown is built on fill that will return to the Sound. The tsunami the rip 9 creates will kill thousands on the OR/WA coast as well.

CA quakes are nothing compared to The Big One the PNW is facing and overdue for.


Dang it. Did the internet lie to me again?
I've been reading for years about "the big one" and SF's extreme vulnerability due to building on unstable soil (from previous earthquake(s) ).
The SF area getting hit by earthquakes roughly every 100 years, and so on.


Countercyclical between Los Angeles and San Francisco every 125 years. Los Angeles has 19 years still until the big one.
 
2012-10-28 01:13:20 AM  

Nogami: Yup, felt it very nicely!


That's what she said.
 
2012-10-28 01:13:47 AM  

God-is-a-Taco: davidphogan:
Very unlikely. SF isn't capable of over a 7.5 or so. The CSD is capable of a 9.0, and most of the PNW is built on fill and seismically decades behind SF.

PDX didn't even know they could face a major quake until 1990, so they have a lot more buildings that are deathtraps than SF. Seattle's downtown is built on fill that will return to the Sound. The tsunami the rip 9 creates will kill thousands on the OR/WA coast as well.

CA quakes are nothing compared to The Big One the PNW is facing and overdue for.


Dang it. Did the internet lie to me again?
I've been reading for years about "the big one" and SF's extreme vulnerability due to building on unstable soil (from previous earthquake(s) ).
The SF area getting hit by earthquakes roughly every 100 years, and so on.


SF and most of Cali have more frequent but less violent quakes due to their faults being slip-strike faults. They go off more often but with less power due to the nature of the fault.

Subduction zone quakes happen less often but with a lot more power because of the motion of the quake. Subduction zone quakes also are more likely to create tsunamis due to the action of the plates and that they're typically underwater.

SF also had an 80-something year head start on knowing they were at risk of earthquakes, which will greatly impact the death toll for SF's favor.
 
2012-10-28 01:15:13 AM  

Kevin72: indylaw: God-is-a-Taco: Hmmm yep, that faultline continues its activity as expected.
San Fransisco still unlikely to exist in 10 years.

ROFL wut?

It means turn on your sarcastometer? Although 7.7 is nothing to sneeze at, this quake is terribly remote. And certainly not connected to the San Andreas or Hayward faults.


Poe's Law. People believe all sorts of crazy shiat.
 
2012-10-28 01:15:31 AM  

Babwa Wawa: shower_in_my_socks: [img708.imageshack.us image 450x336]

That's not syrup.


Of course it is. It's corn syrup.
 
2012-10-28 01:15:31 AM  

Burke Turkey: 5.1 just hit. That's 4 in the past 1.5 hours.


Get used to it. There'll be a few dozen hundred more significant aftershocks over the next few years.
 
2012-10-28 01:17:21 AM  

MurphyMurphy: davidphogan: Very unlikely. SF isn't capable of over a 7.5 or so. The CSD is capable of a 9.0

Curious, how is this determined?

I get they can rate them for pressure, volatility and such, but to put a cap on capability for a major fault seems... oddly exact and confident.


It basically comes down to slip-stike vs subduction zone. Slip-strikes can't build up nearly as much energy as plates sitting on top of each other.
 
2012-10-28 01:17:44 AM  
Haida Gwaii? What a funny wai to spell Hawaii.
 
2012-10-28 01:18:12 AM  
I live in Ketchikan, Alaska. There is not expected to be any damage from the Tsunami, its hitting between low and high tide.
 
2012-10-28 01:21:51 AM  

common sense is an oxymoron: Burke Turkey: 5.1 just hit. That's 4 in the past 1.5 hours.

Get used to it. There'll be a few dozen hundred more significant aftershocks over the next few years.


I'm aware, but they are still fairly large EQ's. The 5.8 aftershock would've made news on its own.
 
2012-10-28 01:24:53 AM  
It's California, is it really necessary to have a news flash for every one of these earthquakes?

Maybe we should have a newsflash every time it rains in Seattle.
 
2012-10-28 01:25:13 AM  

MurphyMurphy: davidphogan: Very unlikely. SF isn't capable of over a 7.5 or so. The CSD is capable of a 9.0

Curious, how is this determined?

I get they can rate them for pressure, volatility and such, but to put a cap on capability for a major fault seems... oddly exact and confident.


If you know the extent of the fault rupture and the amount of accumulated displacement, you can estimate a projected quake's magnitude fairly accurately. The modern magnitude scale (moment magnitude) basically takes the area of slip and the amount of slip, calculates the energy needed to move that much rock that far, then scales it to match the old Richter scale (which was originally intended only for small to medium-sized quakes in Southern California).
 
2012-10-28 01:26:19 AM  

Torion!: [upload.wikimedia.org image 275x184]

"Aw! You farted!" 

/hot


Aw, take off, eh.

/hoser
 
2012-10-28 01:26:36 AM  

Blue_Blazer: It's California, is it really necessary to have a news flash for every one of these earthquakes?

Maybe we should have a newsflash every time it rains in Seattle.


Wow. That's a whole lot of didn't read TFA/thread there.
 
2012-10-28 01:27:51 AM  

Blue_Blazer: It's California, is it really necessary to have a news flash for every one of these earthquakes?

Maybe we should have a newsflash every time it rains in Seattle.


Points and laughs
 
2012-10-28 01:29:01 AM  

Burke Turkey: common sense is an oxymoron: Burke Turkey: 5.1 just hit. That's 4 in the past 1.5 hours.

Get used to it. There'll be a few dozen hundred more significant aftershocks over the next few years.

I'm aware, but they are still fairly large EQ's. The 5.8 aftershock would've made news on its own.


I was in Northridge in 1994. If you're close enough to feel the aftershocks, you'll soon be able to estimate both magnitude and distance with some accuracy from the P and S waves alone, seconds before the shaking really starts. And with a 7.7 main shock, expect at least one mid-6 aftershock, possibly days or even weeks from now.
 
2012-10-28 01:31:04 AM  

indylaw:
Poe's Law. People believe all sorts of crazy shiat.


Yeah, SF would never be hit be a strong earthquake.
 
2012-10-28 01:31:30 AM  

brantgoose: Haida Gwaii? What a funny wai to spell Hawaii.


Keyboard was still shaking.
 
2012-10-28 01:40:12 AM  
I've felt a couple of earthquakes--one rattled my parents house. Outside on the patio my parents and neighbours said it sounded like a train going by on the other side of the river. The second was in Ottawa and I was on the top floor of the building in the bathroom where effects of earthquakes would be more noticeable because of the building sway--I thought "what the Hell did they just do to the elevator?" because the elevators are near the washrooms and they were working on them, but another guy said "that was an earthquake". We got to go home while they checked the building for damage but the only real damage in town was a few fallen bricks from the odd chimney or wall. Both of these earthquakes were in the 4.5 range or so--really small. I missed another nearby earthquake of similar size.

Some people are more sensitive to earthquakes than others but there can be a great deal of variability even in the same area because of building types and differences in geology. Much of Ottawa's soil would be liquified if a really strong earthquake hit according to recent reports. On the other hand, the place where I live and the place where I work are rooted in solid rock. This might make them safer during a quake although I worry about my bookshelves falling on me or windows breaking.
 
2012-10-28 01:41:17 AM  

God-is-a-Taco: indylaw:
Poe's Law. People believe all sorts of crazy shiat.

Yeah, SF would never be hit be a strong earthquake.


Sure it will, but not from the Cascadia subduction zone. The worst-case quake for San Francisco itself would be a full northern-segment San Andreas rupture centered just offshore...in other words, a repeat of the 1906 quake, which was destructive but not catastrophic (most of the damage was due to the post-quake fires). As badly as some might wish otherwise, SF just isn't going to be obliterated by an earthquake.
 
2012-10-28 01:43:44 AM  
Victoria has a tsunami warning up now. Woah.
 
2012-10-28 01:45:23 AM  
Hawaii was a warning up now too.
 
2012-10-28 01:45:34 AM  
So what's the over/under on this being a foreshock to the main Cascadia show?

/Walked right into the HAARP control shack once, so I'm really getting a kick out of these replies
 
2012-10-28 01:47:10 AM  
It looks pretty big on IRIS.

http://www.iris.edu/dms/seismon.htm
 
2012-10-28 01:47:30 AM  
The only tsunami warning up right now is for Hawaii.

Link to the Pacific Tsunami Warning Center
 
2012-10-28 01:49:06 AM  

Captain Steroid: Dear GOD! The moose have launched a counterattack! O_O




W..W
U
/ \
 
2012-10-28 01:51:08 AM  
North America is apparently taking it in both ends.
 
2012-10-28 01:51:19 AM  

fredbox: So what's the over/under on this being a foreshock to the main Cascadia show?

/Walked right into the HAARP control shack once, so I'm really getting a kick out of these replies


I doubt anyone knows. The only written history of the 1700 big one is from the tsunami that hit Japan. There's not much else to go on.
 
2012-10-28 01:53:47 AM  

Kevin72: Something about Gene Masseth's friend?


What? No, I'm fine.
 
2012-10-28 01:54:17 AM  

Burke Turkey: Victoria has a tsunami warning up now. Woah.


It's only an advisory for Victoria.

"A Tsunami Advisory means that that a low-level tsunami is expected. Potentially strong currents could be dangerous for low-lying coastal areas in these zones. Please stay away from beaches and shorelines until further notice."
 
2012-10-28 01:56:29 AM  

Brick-House: FastJeff: Brick-House: well there's your problem...

[media.tumblr.com image 250x141]

Hey asshole, this is serious! Stop making me laugh!

?


Ew, what the hell is that thing?
 
2012-10-28 01:57:52 AM  
Damage costing dozens of Canadian quarters.
 
2012-10-28 01:59:03 AM  
2.bp.blogspot.com
 
2012-10-28 01:59:19 AM  
I was in the Loma Prieta one in 89. The Giants were in the World Series that year

..........wait a minute.............
 
2012-10-28 01:59:54 AM  

common sense is an oxymoron: The only tsunami warning up right now is for Hawaii.

Link to the Pacific Tsunami Warning Center


No word yet on the size of the tsunami expected for Hawaii. There are some readings provided in the warning text below, but they're deep water readings, and I don't know their relative magnitude (e.g., whether they're impressively high or not).

The most relevant part of the warning text:
BULLETIN
TSUNAMI MESSAGE NUMBER 3
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
709 PM HST SAT OCT 27 2012

TO - CIVIL DEFENSE IN THE STATE OF HAWAII

SUBJECT - TSUNAMI WARNING

A TSUNAMI WARNING IS ISSUED FOR THE STATE OF HAWAII EFFECTIVE AT
0709 PM HST. THIS UPGRADE IS DUE TO THE SEA LEVEL READINGS
RECEIVED AND THE RESULTING CHANGE IN THE HAWAII TSUNAMI
FORECAST.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME - 0504 PM HST 27 OCT 2012
COORDINATES - 52.8 NORTH 131.8 WEST
LOCATION - QUEEN CHARLOTTE ISLANDS REGION
MAGNITUDE - 7.7 MOMENT

...

EVALUATION

A TSUNAMI HAS BEEN GENERATED THAT COULD CAUSE DAMAGE ALONG
COASTLINES OF ALL ISLANDS IN THE STATE OF HAWAII. URGENT ACTION
SHOULD BE TAKEN TO PROTECT LIVES AND PROPERTY.

A TSUNAMI IS A SERIES OF LONG OCEAN WAVES. EACH INDIVIDUAL WAVE
CREST CAN LAST 5 TO 15 MINUTES OR MORE AND EXTENSIVELY FLOOD
COASTAL AREAS. THE DANGER CAN CONTINUE FOR MANY HOURS AFTER THE
INITIAL WAVE AS SUBSEQUENT WAVES ARRIVE. TSUNAMI WAVE HEIGHTS
CANNOT BE PREDICTED AND THE FIRST WAVE MAY NOT BE THE LARGEST.
TSUNAMI WAVES EFFICIENTLY WRAP AROUND ISLANDS. ALL SHORES ARE AT
RISK NO MATTER WHICH DIRECTION THEY FACE. THE TROUGH OF A TSUNAMI
WAVE MAY TEMPORARILY EXPOSE THE SEAFLOOR BUT THE AREA WILL
QUICKLY FLOOD AGAIN. EXTREMELY STRONG AND UNUSUAL NEARSHORE
CURRENTS CAN ACCOMPANY A TSUNAMI. DEBRIS PICKED UP AND CARRIED
BY A TSUNAMI AMPLIFIES ITS DESTRUCTIVE POWER. SIMULTANEOUS HIGH
TIDES OR HIGH SURF CAN SIGNIFICANTLY INCREASE THE TSUNAMI HAZARD.

THE ESTIMATED ARRIVAL TIME IN HAWAII OF THE FIRST TSUNAMI WAVE IS

1028 PM HST SAT 27 OCT 2012

MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS WARRANT.

$$
 
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