EARTHQUAKE SWARM, NORTHERN CALIFORNIA NOW!

So it begins.

oh look - the 20th cal thread.

Anything North of a 6.0 gets me excited anything else is boring.

Swarms are good. As long as it's swarming you know the pressure is being released. It's only when it abruptly stops (like the one up in Russia did earlier today) that you need to brace for impact.

Wasn't there a swarm in Russia also?

Look out here it comes.

100 Earthquakes of varying magnitude in only 6 hours. Question is, aftershocks or precursors?

There not very deep.

Now??? Been going all night!

Sorry. Total myth. More quakes does not necessarily mean more pressure released. In fact, USGS discusses why in detail:

[link to earthquake.usgs.gov]

From USGS: You can prevent large earthquakes by making lots of small ones, or by "lubricating" the fault with water.

FICTION: Seismologists have observed that for every magnitude 6 earthquake there are about 10 of magnitude 5, 100 of magnitude 4, 1,000 of magnitude 3, and so forth as the events get smaller and smaller. This sounds like a lot of small earthquakes, but there are never enough small ones to eliminate the occasional large event. It would take 32 magnitude 5's, 1000 magnitude 4's, OR 32,000 magnitude 3's to equal the energy of one magnitude 6 event. So, even though we always record many more small events than large ones, there are far too few to eliminate the need for the occasional large earthquake. As for "lubricating" faults with water or some other substance, if anything, this would have the opposite effect. Injecting high- pressure fluids deep into the ground is known to be able to trigger earthquakes—to cause them to occur sooner than would have been the case without the injection. This would be a dangerous pursuit in any populated area, as one might trigger a damaging earthquake.

this is all related to the 8.3 600KM!!!! deep quake in the subduction zone near russia

that subduction zone ust got "lighter"
a giant slab of subducted crust just went past the lithosphere and "fell off" into the plasticity of the asthenosphere

600km is asthenosphere which is basicly directly deeper than the crust.

i expect the western North america to see Volcano eruptions, and decent size earthquakes

do any of you know that MT lassen volcanic park is only like 20 miles from greenview ?

my question is whilst looking at that eq map…. is lake alanor a caldera ?

i know lake tahoe is ( mammoth mt) and they are also recieving clusters


i just want to let it be known i have never seen a 600 km deep (350miles) eq before

im just a hobby eq studier

Is it the full Moon factor or do you think that the asteroids that are nearby, or the solar activity that are creating greater pressure against the plates. Or is there some other factor?

And the swarm of Earthquakes continue, all night and into the next day;

3.2 12km WNW of Greenville, California 2013-05-24 11:58:14-07:00 0.0 km deep
3.2 13km WNW of Greenville, California 2013-05-24 11:48:31-07:00 0.1 km deep
2.8 7km WNW of Greenville, California 2013-05-24 11:43:19-07:00 0.0 km deep
2.9 10km WNW of Greenville, California 2013-05-24 11:22:06-07:00 0.0 km deep
2.6 9km WNW of Greenville, California 2013-05-24 11:16:58-07:00 0.0 km deep
5.1 Southern Mid-Atlantic Ridge 2013-05-24 10:52:29-07:00 10.0 km deep
2.8 8km WNW of Greenville, California 2013-05-24 10:36:46-07:00 0.0 km deep
2.5 7km NW of Greenville, California 2013-05-24 09:29:53-07:00 0.0 km deep
2.6 8km WNW of Greenville, California 2013-05-24 09:29:10-07:00 0.0 km deep
4.0 9km WNW of Greenville, California 2013-05-24 08:26:20-07:00

This is the same area that a sink hole developed in last week.
Is an Volcano coming to live near Sacramento, CA?

Well can still say what I said this moring, they are not very deep.

I live in Northern California near Chico and was able to feel the earthquake.

Previous thread asked if the nearby lake, Lake Almanor was an old Caldera. Lake Almanor is a lake due a dam at the south end of the lake. This is where the swarms occur. Before the dam, the area was a lush meadow known as 'Big Meadow' where summer cattle ranching was common.

[link to www.sierranevadageotourism.org]

From my office I can see Mt. Lassen and I'm pleased to say that I cannot see smoke or steam plumes from the Mt as were common when it was active in the 1910s.