West Coast USA: Pay Attention, Cascadia May Be Ready to Rupture

reply to post by Alchemst7


Ahem.. uh .. that was a interesting video, but I don't know if it was supposed to be a joke or not. And just to disprove on major ignorance in the video: Earliest records of Paltypus's are 100,000 years old. A relatively new species. No .. Earth is not growing, it would collapse in on its self (unless gravity is a conspiracy too!)

'Left-Coast'...Who cares about that Obama 'socialist sewer!'

Originally posted by Rockpuck
reply to post by TrueAmerican

 

I keep hearing about these earthquakes around the Portland area but I'm yet to feel one. They're pretty common though, personally I don't think it's something to worry about.

Dude, WHEN CSZ goes you might be changing your tune... Portland will most certainly be toast, I'm much farther inland (SE corner WA state) but I'm even expecting some repercussions... But you keep on not worrying...

Might be prudent to prepare though

lol. omfg.

z and oli are both saying that TA is not fearmongering enough, and the situation is actually much worse than even I envisioned.

Now THAT is pretty damn bad!

But seriously folks, I mean look at this:


I have placed arrows next to these three quakes which are concerning me even more, because they are right on the leading edge of the subduction line, which could indicate that portion is starting to come unglued. Again, none of these quakes anywhere in this are that rare. Look at the historical seismicity for that area, and you will see.

What is concerning me is the short time period in which they are occurring. I cannot stress that enough. The next days and weeks are crucial with this. We MUST stay on top of this. No, correction: those LIVING there MUST stay on top of this. I am just a bystander from afar, observing from beyond.

And just in (unrelated): mark- 11:24 PM, just heard a loud boom of some kind.

Originally posted by TrueAmerican

For the length of time thats a fair number of shakes for this neck of the woods. Even though we are primed and ready, little happens.

Those intermediate little EQs are what Im trying to identify and see if patterns emerge for prediction purposes. Ive got to go back over all of them and do a timeline. I call those transition zone EQs, and I have a suspicion that they are indeed a precursor to bigger quakes.

But here's the clincher for me. I was meditating on a bluff in Trinidad today around 4 to 5. When I get deep in meditating, and Im on the earth, I am exquisitely aware of every minute vibration. And she was rumbling today. Twice. It hasnt shown up on any maps, but I know what I felt, and Im pretty sure it was magma moving. I have never experienced that but know that magma movement is completely different than plates interacting. They are called volcanic/magmatic tremors. A peculiar motion, both up and down and side ways at the same time but not noticeable unless one is in an altered state as I was. And it can last a long time with peaks (called drumbeats) and valleys but always grumbling. And it sure felt like that today.

But this isn't anywhere near the volcano belt, and that belt, Mt Shasta and Lassen being the southern end, is moving southeast. Hmmmmmmmm?


ON EDIT: The feeling reminded me of something that happened at Mt St Helens. Called drumbeat EQs, the MSH ones were different than most. Two theories came forth. One was the widely accepted one of magma lurching as it proceeded down the channel. The other was one Id never heard before. One scientist theorized that the type of EQs at MSH were caused by pressure built up from steam caused by water and magma interacting. Picture the top of a kettle boiling and the top popping off steam every once in a while while whistling and vibrating away. And that is the best descriptor of what I felt today, an inner earth steam kettle.

reply to post by zworld


Totally off topic, zworld, but how is Trinidad? Moonstone, Agate Beach, Patrick's Point? Beautiful as ever?
Sigh...I miss home.

Originally posted by Olivine
reply to post by zworld

 

Totally off topic, zworld, but how is Trinidad? Moonstone, Agate Beach, Patrick's Point? Beautiful as ever?
Sigh...I miss home.

I see you know it well, Olivine. It has always been home for me, even when living thousands of miles away. There is something so special about that place, its sad to think that it could get totally rearranged when the big one hits.

Originally posted by zworld
It has always been home for me, even when living thousands of miles away. There is something so special about that place, its sad to think that it could get totally rearranged when the big one hits.

True for me as well; it will always be home. There is something about this area that forces me to be calm, awed, inspired and...most importantly -- humbled.

BTW, the small rumbles are still going on in your backyard. This was at 17:23 UTC (9:23 am Pacific time). Both seismos are in Petrolia.


ETA: I just wanted to emphasize that these "rumbles" are small -- too small to show on the USGS listings. Still shakin, though.

Originally posted by Olivine

Originally posted by zworld
It has always been home for me, even when living thousands of miles away. There is something so special about that place, its sad to think that it could get totally rearranged when the big one hits.

True for me as well; it will always be home. There is something about this area that forces me to be calm, awed, inspired and...most importantly -- humbled.

BTW, the small rumbles are still going on in your backyard. This was at 17:23 UTC (9:23 am Pacific time). Both seismos are in Petrolia.


ETA: I just wanted to emphasize that these "rumbles" are small -- too small to show on the USGS listings. Still shakin, though.

edit on 2/11/2012 by Olivine because: extra info

edit on 2/11/2012 by Olivine because: (no reason given)

Olivine, that wouldn't show up on the swarm map would it. Too far south, isnt it. I never thought about that. slow slip happening outside the swarm map. Where did the waveform graph come from. I think it might show magmatic tremors sometimes as that area southern Humboldt and Mendocino Co are over the slab gap where magma is closest to the surface anyplace in North America, and maybe that would explain the magmatic tremors I thougt I felt.

reply to post by zworld


Hi zworld.
I just posted a map showing tremor for the past 6 months in the "deep tremor" thread. It shows tremor out to sea, west of Ferndale. If the plate boundary lines are an indication of coverage area, it looks like it goes as far south as Redway and Covelo, so it should be able show tremor nearer to you--if it happens.

The above traces are from GEE--Global Earthquake Explorer (love it--TA has a thread somewhere on here, that gives instructions on usage--very helpful. Here it is ).
As far as picking up tremor of magmatic origin, I've never noticed anything close to an harmonic tremor trace on these seismos near Petrolia. Might be possible if you looked at stations a little farther south, near Clear Lake, The Geysers, Cobb Mtn and Lake Pillsbury.

Originally posted by Olivine

Might be possible if you looked at stations a little farther south, near Clear Lake, The Geysers, Cobb Mtn and Lake Pillsbury.

edit on 2/12/2012 by Olivine because: (no reason given)

edit on 2/12/2012 by Olivine because: (no reason given)

You mean like in this area

I know you were talking about magmatic tremors, but here an EQ right where you were talkin. smack dab. Hmmmm? precog?

ON EDIT; I posted this in quakewatch as well. Good call

reply to post by zworld


I think there is a swarm going on there, z.

On another note, I am seeing some things up in northern Washington State that I am not liking at all. I think there might be a quake coming soon, and maybe today. A key station is down at the moment, so I don't want to issue A2 until I can see it. But...just...umm...stay alert folks.

To be clear: I said a quake. Of some kind. Not necessarily the "Big One". Just testing some things.


And Oli, this has nothing to do even with what you sent me. It is based on some particular things I am relating to what I have mentioned earlier in the thread.

Originally posted by TrueAmerican
reply to post by zworld

 

I think there is a swarm going on there, z.

On another note, I am seeing some things up in northern Washington State that I am not liking at all. I think there might be a quake coming soon, and maybe today. A key station is down at the moment, so I don't want to issue A2 until I can see it. But...just...umm...stay alert folks.

To be clear: I said a quake. Of some kind. Not necessarily the "Big One". Just testing some things.

edit on Mon Feb 13th 2012 by TrueAmerican because: (no reason given)

And Oli, this has nothing to do even with what you sent me. It is based on some particular things I am relating to what I have mentioned earlier in the thread.

edit on Mon Feb 13th 2012 by TrueAmerican because: (no reason given)

You called it TA. Im going to look for specifics but at 1:08 Eureka CA took a fair rumbling. More sonn.

earthquake.usgs.gov...

They say it was a 5.3.

We sure did feel it! We are in Eureka..."on the edge".

(Now upgraded to a 5.5.)

Wow. Good call on that one.

I'd like to see some more calls, and see if they happen or not. If they do, then I would say TrueAmerican has developed a good prediction model.

reply to post by On the Edge

Yes, got upgraded to a 5.5, has now been notched up to a 5.6:

Magnitude 5.6 - NORTHERN CALIFORNIA
2012 February 13 21:07:02 UTC

Details
Maps
Scientific & Technical
Tsunami
Additional Info

Earthquake Details

This event has been reviewed by a seismologist.

Magnitude 5.6
Date-Time

Monday, February 13, 2012 at 21:07:02 UTC
Monday, February 13, 2012 at 01:07:02 PM at epicenter
Time of Earthquake in other Time Zones

Location 41.153°N, 123.817°W
Depth 32.9 km (20.4 miles)
Region NORTHERN CALIFORNIA
Distances

10 km (6 miles) WSW (247°) from Weitchpec, CA
28 km (17 miles) ENE (63°) from Westhaven-Moonstone, CA
29 km (18 miles) ENE (70°) from Trinidad, CA
50 km (31 miles) NE (36°) from Eureka, CA
352 km (218 miles) NW (326°) from Sacramento, CA

Location Uncertainty horizontal +/- 0.3 km (0.2 miles); depth +/- 0.8 km (0.5 miles)
Parameters Nph= 62, Dmin=17 km, Rmss=0.17 sec, Gp= 72°,
M-type=regional moment magnitude (Mw), Version=6
Source

California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR

Event ID nc71734741

Source: USGS Data Page

Hope you're safe and well there!

Namaste,

MIke

Originally posted by On the Edge

We sure did feel it! We are in Eureka..."on the edge".

Me too for this one. I think peeps in Trinidad felt it alot stronger. Some people almost got knocked off their chairs. It was a short and sweet sharp jolt.

reply to post by zworld

Zworld, I originally was thinking you meant Trinidad as in Trinidad and Tobago. Took me a while to figure out you meant California. Then it made a great deal of sense.

Speaking of sense, what are you sensing now, if anything?

And many thanks for your insights. Much appreciated.

Mike

WOW...

SO.... I too am thinking this is NOT GOOD! Not good at all. I live close to the New Madrid so as of now I am in no danger, however my thoughts and prayers for the people of Northern California. REALLY hope and pray this unsettling will settle and not cause it to fully rupture!

Originally posted by JustMike
reply to post by zworld

 

Zworld, I originally was thinking you meant Trinidad as in Trinidad and Tobago. Took me a while to figure out you meant California. Then it made a great deal of sense.

I was going to say the exact same thing.

Was thinking, how did they feel it all the way over there?....Ahhhh There's a Trinidad CA.