180 Deg Slip/Strike Eq in SoCal???

Unless an"expert representative" from a known geological organisation comes to this site to give real explanation of the events, getting all worked up over the earthquakes and screamin the sky is falling is a waste of energy. I understand being concerned but let's not freak out. Remember a year ago when Yellowstone woke up a bit? All turned out ok and we are still here.

reply to post by Lil Drummerboy

ft.c om link

I know that this particular geologist has not come onto ATS to say this but you might find his 'views' interesting as to what to expect next.....or what is expected next from experts.




mod edit, attempt to fix link

[edit on 4-10-2009 by DontTreadOnMe]

Sorry if link is not working but what he is saying is that they are expecting a very big quake yet to come of possibly 7 + Scale but doesn't specify exactly where.

You could go to WWW.davidicke.com, go to recent headlines, scroll down to bigger Tremor to come, (in FT.com) and you'll be able to read what this geologist says yourself.

reply to post by Elliot


Thanks for the link but all I got was a 'Log in' page. Can you correct or quote?



Never mind. you beat me to it. Thanks

[edit on 4-10-2009 by geo1066]

www.quakeprediction.com... here is another source for you if you like. What I am gettin at here is gettin the panties in a bunch has proven to be nothing but uncomfortable.

Of course it never hurts to have a months worth of food and water stored at your home. jus sayin.....

From my understanding, simply from loving science and living in California most of my life, it seems this is totally normal. The slipping in opposite directions is simply the balancing of pressure energies and happens ALL the time.

Can one of you in-the-know people please explain why this is different than what we'd expect after a 5.x last week?

So, Im stupid and dont know anything about earthquakes but on the usgs world map it appears that most of the earthquakes lately are around the ring of fire. If Western and Eastern California are pulling away from each other or "tearing in two" and with the recent activity in the western Pacific, wouldnt that indicate that the Pacific plate is moving West?

en.wikipedia.org...

Megathrust earthquakes occur at subduction zones at destructive plate boundaries (convergent boundaries), where one tectonic plate is forced (or subducts) under another. Due to the shallow dip of the plate boundary, which causes large sections to get stuck, these earthquakes are among the world's largest, with moment magnitudes (Mw) that can exceed 9.0. During the rupture one side of the fault is pushed upwards relative to the other, and it is this type of movement that is known as thrust.[1]

The major subduction zone is associated with the Pacific and Indian Oceans and are responsible for the volcanic activity associated with the Pacific Ring of Fire. Since these earthquakes deform the ocean floor, they almost always generate a significant series of tsunami waves. They are known to produce intense shaking for long periods, such as several minutes.

Edit to Add:
Since 1900, all five earthquakes of magnitude 9.0 or greater have been megathrust earthquakes, in fact, no other type of known earthquake can produce earthquakes of this scale.



[edit on 4-10-2009 by liveandletlive]

After checking out the CI.CWC station carefully across all three channels, BHN, BHE and BHZ, my personal opinion for the moment is that those channels at that station are probably messed up.

There are several reasons I will give for this:

1) First order of business is always get confirmation from nearby stations if you observe any weirdness going on. And to that effect, a close by station is CI.MPM, and there is no such BHE or BHN 180 degree movement like that occurring. That's reason enough to suspect something is up with CI.CWC.

2) I have a considerable bit of experience monitoring stations in CA with GEE, and I can tell you that this phenomena is not at all uncommon. In fact, if I flipped every time I saw something like this in GEE, I'd be in a mental hospital by now, and possibly dragging a few of you with me.

3) Amplitude is critical. The ground is always moving to a very small degree everywhere. And the observed amplitude of these movements you are seeing is very very small. So small it is really insignificant, even if the BHE and BHN channels at CI.CWC WERE working properly.

So in summary we have no corroboration from nearby stations, the amplitude is insignificant, and it's nothing I haven't seen before in that area. So what does all this mean?

IMO, absolutely nothing. But of course, an earthquake can happen any time, anywhere, no telling. There is always that chance. Does this observation at CI.CWC increase that chance, or is there something to worry about? IMO, not at all. Not even a little bit any more than normal. Hope that helps, and it just my lowly opinion. I'm surprised some other GEE watchers around here haven't chimed in to this effect. Hmm.

Originally posted by skepticantiseptic
What about all the earthquakes in really strange locations?

Seems to be we are going through a period of earthquakes in many "diverse" locales.

Mentioned in the Bible as a sign of the impending end.

The earth quakes lately have not been in strange locations at all, infact they have been in the general area of the usual.

basically
cali is made from 3 seperate chains of islands that ran into the NA plate, the same thing is how japan is formed and eventually japan will collide with asia just as islands that formed cali did.
The giant block of granite that makes up the sierra nevada has prevented these island chain from fully subducting, hence the last island chain, the coast range, is essentially blocked from moving east so it moves north.
The great central valley of california is a filled in deep ocean trench, eventually the sea of cortez(gulf of baja) will close up and fill in in the same way.
so everything on the west side of the san andreas is moving north
stuff between the coast range and the east side of the sierra nevada is trying to go east but it cant.
The numerous other faults are the left over broken blocks of the colliding islands, that are moving in random directions.

Originally posted by Zosynspiracy
This is complete and utter fear mongering. Nothing is bad is going to happen to the wonderful people of California. Earthquakes are complete unpredictable and the big one is atleast 100 years off.

So if earthquakes are completely unpredictable.......how can you predict that the big one is at least 100 years away?

Oh, and:

The length of time this has been occurring on those channels is another dead giveaway to an experienced GEE watcher that something is wrong. I wanted to wait more time to confirm this, but I have seen enough now to know, beyond a shadow of a doubt, that station is messed up.

If that was occurring like that for a bit, then going on to another pattern, and then reoccurring similar but slightly different, then it would be apparent it is occurring naturally. But I promise you, that is not natural, and is occurring because again, something's wrong with the station. Sorry, but I'm done here, nothing more to see. I've got most of CA up in GEE right now though, so I'll keep a lookout for anything else.

reply to post by TrueAmerican
There is a chance that the readings are incorrect, but, I did see out of phase movement on 2 other stations last night as well...

They were not as large, due to the distance involved but appeared none the less...

My OP was not meant to instill panic or doom...I was just trying to rationalize this continued swarm and try to explain what IMHO I was seeing...

Probably nothing as noted...but a teaching moment none the less...

Also notice the Samoa ridge/subduction zone...how it ~appears~ to point right at SW US Coast...Wave Propagation/Direction???

map 1.2 2009/10/04 10:35:40 35.640N 120.937W 5.2 12 km ( 7 mi) SSW of Lake Nacimiento, CA
map 2.0 2009/10/04 10:17:47 36.396N 117.856W 3.3 10 km ( 6 mi) S of Keeler, CA
map 1.2 2009/10/04 10:12:18 35.640N 120.935W 5.4 12 km ( 7 mi) SSW of Lake Nacimiento, CA
map 1.3 2009/10/04 10:10:45 33.275N 116.776W 13.1 4 km ( 3 mi) NNW of Lake Henshaw, CA
map 2.7 2009/10/04 09:47:28 36.380N 117.852W 3.9 12 km ( 8 mi) S of Keeler, CA
map 1.6 2009/10/04 09:17:10 36.391N 117.865W 4.4 11 km ( 7 mi) S of Keeler, CA
map 2.3 2009/10/04 09:08:51 38.816N 122.812W 3.6 2 km ( 1 mi) NNW of The Geysers, CA
map 2.7 2009/10/04 08:56:42 35.642N 120.939W 5.2 12 km ( 7 mi) SSW of Lake Nacimiento, CA
map 1.8 2009/10/04 08:44:22 36.383N 117.882W 4.2 12 km ( 7 mi) S of Keeler, CA
map 1.4 2009/10/04 08:38:34 37.532N 118.830W 7.4 14 km ( 8 mi) WSW of Toms Place, CA
map 2.8 2009/10/04 08:35:23 39.397N 122.902W 8.0 5 km ( 3 mi) ESE of Lake Pillsbury, CA
map 1.6 2009/10/04 08:24:33 36.087N 117.910W 4.9 6 km ( 4 mi) NE of Coso Junction, CA
map 2.9 2009/10/04 08:03:52 36.100N 117.903W 3.5 7 km ( 5 mi) NNE of Coso Junction, CA
map 2.8 2009/10/04 07:54:51 36.406N 117.853W 5.7 9 km ( 6 mi) S of Keeler, CA
map 0.4 2009/10/04 07:44:45 38.842N 122.774W 2.3 5 km ( 3 mi) W of Cobb, CA
map 1.9 2009/10/04 07:40:03 36.457N 121.023W 4.4 14 km ( 8 mi) SE of Pinnacles, CA
map 1.8 2009/10/04 07:30:31 32.812N 115.850W 17.5 15 km ( 9 mi) W of Seeley, CA
MAP 3.0 2009/10/04 07:19:09 32.941N 115.731W 16.1 15 km ( 9 mi) SW of Westmorland, CA

[edit on 10/4/2009 by Hx3_1963]

I live in downtown Los Angeles. I try to follow what's happening in the earthquake world (seems like a reasonable precaution considering where I live) but I'm no expert. However, I haven't seen anything lately that makes me more concerned than normal.

As an earlier poster mentioned, it's always a good idea to have some food, water, batteries, medical supplies stashed just in case. California residents are frequently encouraged to have an earthquake-preparedness kit at home.

I've downloaded the GEE software and I'll check it out. For now, though, I'd say don't panic, just be prudently prepared.

Can anyone tell me if there has been an increase in earthquake activity on a global scale over the last 10yrs or so. And if there has been, has this increase accellerated in frequency and severity?

Or is there a web site I could find out this info?

Thanks. :-)

Also take note of increased activity in the Samoa/Sumatra areas again today...

Hey TA...anyway for you to calculate the propagation time from The Samoa Fault to SoCal...see if we can find a link?

[edit on 10/4/2009 by Hx3_1963]

Originally posted by Hx3_1963
Also take note of increased activity in the Samoa/Sumatra areas again today...

Hey TA...anyway for you to calculate the propagation time from The Samoa Fault to SoCal...see if we can find a link?

Sure, you can calculate it, but why bother. For most major quakes, the USGS lists these propagation times in the details via a propagation map. So simply go back to the last big one there, what, a couple days ago? ....and look up the time on the propagation map.

If you have trouble, I can do it for you. But more fun to do it yourself when you are trying to learn.

reply to post by TrueAmerican
Now that was a well thought reply!

Indeed...I speak of a learning experience and then almost miss out on one

So you didn't notice any out of phase displays on other close stations last night?

I wish I'd taken more screen shot to illustrate this better...

And here's a nice little page...

Live Internet Seismic Server
aslwww.cr.usgs.gov...

Originally posted by Hx3_1963
reply to post by TrueAmerican

 

Now that was a well thought reply!

Indeed...I speak of a learning experience and then almost miss out on one

So you didn't notice any out of phase displays on other close stations last night?

I wish I'd taken more screen shot to illustrate this better...

And here's a nice little page...

Live Internet Seismic Server
aslwww.cr.usgs.gov...

I wasn't monitoring CA last night, so no. And besides, right now I am more concerned with what's happening out in Samoa/Tonga/New Guinea/Fiji area. But you know mother earth, hehe, watch one place, and they always occur in another it seems.

But if you ever capture an nice size one, you can upload it to the GEE screenshots thread I got going somewhere around here. Hang on... here:

www.abovetopsecret.com...

You can see some of the ones I captured live on that thread. And I post most of them before the USGS or the Firefox plugin notifies us of the quake. Kinda fun, I suppose, trying to guess the magnitude and then see the USGS result.