Whats going on at yellowstone?

reply to post by Hx3_1963


Yeah, I thought that was what you meant... Is that the crack that formed in 2004 as a result of the big earthquake that caused the Tsunami? I remember reading how that event actually altered the geoid somewhat... i.e. gravity readings on the planet began to change. Can't remember where I read that now, will go in search of it.

reply to post by Wrathier



oh well acording to the USGS and YVO . the quake swarm is the lagest they have seen within a short time, but as they put it .
no volcanic activity is immiant .

reply to post by questioningall


Did you happen to notice that there appears to be less snow around the geysers even though that arctic front is in place?

reply to post by Hx3_1963


Well, this is more or less what I mean.
There is nor reason for an earthquake there in Catalunya. Although it is a small one and very close to home, there is no real history of seismicity in the area.
So it is unusual, as it is unusual for an earthquake to occur in the Shetlands, or in Switzerland or Poland. Every occurrence in itself is nothing special, and neither are the latest two Yellowstone swarms but adding all up because all of it seems to occur at more or less the same time, that is what makes me wonder.

reply to post by Cedrica


Ah, found it. Great read for anyone interested:

Satellite data reveals gravity change from Sumatran Earthquake

Oh, and I see now the crack pointed out east of Australia is not where the 2004 earthquake originated.

reply to post by questioningall


I think it's hard to get any good feel for the frequency of geyser eruptions based on what we see on the webcam. Since someone has to operate that cam, and since they probably take breaks, have different people running it, etc., I'd expect that sometimes we get a "fresh" operator who is really knowledgeable or very observant, and who has the time on their hands to make it a point to aim the camera at the erupting geysers. Other times, the camera may be all but abandoned, with it left staring at a scene that just doesn't happen to be showing anything interesting.

So we're not able to really draw any conclusions about frequency of geyser eruptions from the webcam.

A good, attentive operator will follow the action better. A distracted, busy, or non-existent operator will miss a lot of the good stuff.

At least that's my guess.

It'd be nice to hear from those who are monitoring geyser eruptions and other behaviors of the various features in the park to find out if they're really seeing any altered activity.

I tend to feel that nothing obvious is happening, though, or else we'd hear about it from park visitors and officials. So if anything is going on along those lines, I suspect it's quite subtle.

Again, someone actually visiting the area and speaking with the rangers could answer this for us. But most of us don't have the time available away from work to actually make a trip to the park.

It'd be fun to get one of the local rangers to pop into this thread every so often to answer some of our day-to-day questions about this kind of thing.

reply to post by robystar


Hi,

Thought I would inform that we recently had a "first" time ever earthqueake in south Sweden so wild that it could be felt in Copenhagen and some of Jutland 400km from Copenhagen. (Copenhagen is the Danish Capital).

Here is a link I found to a list of #s of earthquakes per year. Also has an interesting chart on energy released from the quakes. I don't know much about this source, although data is supposed to be from USGS. (Keeping in mind USGS doesn't list Canadian or European earthquakes unless they are pretty large.)

www.johnstonsarchive.net...

It doesn't list 2009, naturally. Perhaps someone would like to go through and add 2009's numbers to the chart and see how we're trending?

Keep in mind the extreme number of deaths in 2008 were mostly due to the one horrible quake which happened to hit a highly populated part of China. There's a news release from the USGS about the anomolous #s of earthquake deaths in 2008:

www.usgs.gov...

reply to post by quakewatcher


so i don't see any increasing trend at a glance, at least ....

reply to post by robystar


To me, those are good questions.

Most of us on here are only following all of this right now because of the publicity that the earthquake swarm under Yellowstone created.

So now we look at all of this and wonder if what we're seeing is just typical activity all over the world, or if we're seeing an increase of some sort over what's normal.

I remember seeing active volcanoes all over one of the maps and wondering if it was normal. Then I read something talking about how at any given point in time, there were X volcanoes erupting someplace on earth and what I was seeing was actually a bit lower than usual.

So it's a matter of most of us having no real perspective because we have not been following this for a long enough period of time.

Some long-term statistics, and some analysis of it all is certainly required because I've got absolutely no "feel" for any of this, myself.

I rest my case! Thanks.
Oops, have to add something as one liners are not welcome.
Ahhmm, Sweden is the last place on earth I 'd expect an earthquake report from unless Scania is in trouble?

I think what we are learning daily on here is that our earth is a VERY active place and earthquakes and volcanoes are an important part of it.

The other thing we have learned is that most of the quakes we are seeing are from the RING OF FIRE which circles the Pacific Ocean, from south of New Zealand through Indonesia and up the Asian/Russian coast across to Alaska and then down the backbone of North, Central and South America. Quakes go off here daily and every once in a while a big one goes off, like the 9.2 quake that created the tsunami in the Indian Ocean on December 26, 2004 that caused unimaginable harm. It killed 225,000 people in 11 countries.

Here is a good picture of the Ring of Fire and recent quake activity. Click on a circle and you get the details about the quake.

www.iris.edu...



[edit on 15-1-2009 by manotick]

Yellowstone Earthquake Text Message Notification

Sorry if this has already been posted, not sure if it works but might be of interest to some.

www.5redboxes.com...

reply to post by robystar


As said it was pretty wild and unusual. It was like 06:31AM and some people got some furnitures and pictureframes broken because it tilted. I am 28 years old and I never heard about such a thing in south Sweden/Denmark before. The only casulty was a frog - It was all over the news. Rofl.

reply to post by Wrathier


don't forget about glacial rebound in Scandinavia (its significant), as a possible cause of earthquakes ...

Actually it looks like that chart only shows the first half of 2008, but the USGS says earthquake activity was lower in '08 than in '07, which was a particularly bad year.

Perhaps 08 was an anomaly and we are trending up?

reply to post by questioningall


It will be interesting to see if Yellowstone lake water discharge will increase in the following days. What we've seen lately could be due to weather.

reply to post by robystar


hard to figure out what Ur talking about without a "reply to" on your message, but that's just me , i guess ....

I mentioned it before (maybe around pg100 or so) and I am going to repeat it. The global activity - whether increased or not - does seem to be holding to a pattern. I will have to go through the data to see if I can prove it, but to me it seems Yellowstone will have activity for several days, then it will taper off. When Yellowstone goes quiet, Indonesia and East of Australia go bonkers. Then activity picks up again in So Cal, Baja, and a few days later Yellowstone starts chattering again. Then the cycle repeats.

Not sure if there is anything to it... but it does seem to be a pattern of some sort. I'd say overall the worldwide rumbling does seem to be losing intensity. I hope. Anybody else have this same impression?

reply to post by geogeek


It's hard to recommend just one book. There are a lot of great ones out there.

It depends on what the end goal is, actually.

For general electronics with a bias towards RF and radio work, the current ARRL Radio Amateur's Handbooks are kind of nice because of the fact that they do not assume that the reader is already at some high level of knowledge. But they *are* intended for people who primarily have an interest in radio.

Some of the Navy (navpers) books are excellent, too, and cover a wide range of general electrical and electronic theory. A college teacher I had one time used some of those, and they still stand out in my mind because of the clear, concise writing and amazing hand-drawn illustrations that just seem to "work".

It's been too long since I actually took any classes in this for me to have anything new just jump to mind.

For IC information, it's actually kind of hard to beat the databooks that National used to put out. They kind of started the whole business of creating semiconductor databooks in which they provided copious design examples (featuring *their* chips, of course).

But now, most of the larger semiconductor houses provide excellent databooks, data sheets, and so-called "application notes". You'd be surprised how much you can learn from browsing those sources because you get to see actual complete designs with good explanations for the rationales behind those applications.

I'll look around a bit, but I gotta run for now. Sorry for the quick "hit and run".