Whats going on at yellowstone?

reply to post by JustMike


The resurrection of TSG? It would be good if Shirawaka could get his graphs going again to track this.

reply to post by PuterMan


That's what I was thinging last nite...weren't we talkin' about TSG & The Mush Pot's...might be related?

Originally posted by JustMike
reply to post by startx.jeff
I'd buy the argument that the "pulses" at LKWY were just from a compressor if they showed pretty much the same strength all the time, but they didn't.

Oh geez, not the compressor bit again! Look folks those sensors and air quality units have been up there for years. Now find this compressor pattern in past graphs and then match those verified readings of compressors or road noise or fleas farting in the wind to the recent graphs, then there would be definative evidece of compressor or other noise on the newer graphs!

Has anyone done that yet to settle this compressor nonsense once and for all?

And I thought NASA had some pretty far out explanations.



Cheers!!!!

Crazy sideways motion at Lakeway and another little spike at 22:29.

It's just very unsettled looking on GEE. It's weird how all that sideways stuff looks like nothing once it's plotted on the helicorder.

This is a screen print of that satellite photo that was freaking me out. All the subsequent links to satellite images posted by other people after me did not take me to the same website or images. The highlighted shot is dated 12/12/08. All of the other shots around it are from different dates and have the "pink" I saw referenced in a couple posts.

reply to post by Penster


Yeah but that image is the one from summer of that year, when you click on the goto button on the side there, it will paint the yellow square over a cloud occluded picture on the left. I could wish we could get a view as good as that summers now.

M.

reply to post by Moshpet


I pulled up the metadata and the Landsat date aquired for that specific image is the date in December that I posted - nowhere am I finding an earlier date for the acquisition of that image.

reply to post by RFBurns


Something to Compare increasing intensity...



[edit on 1/13/2009 by Hx3_1963]

Here's a Canadian Seismo from just north of montana
WATERTON LAKE, AB.

earthquakescanada.nrcan.gc.ca... LA#SECTION_1

reply to post by Hx3_1963


if U back up further in the path, u can turn on or off filtering ,autoscaling, and display the constellation of canadian stations if U want to ... U can also choose to display one station for a full day with your choice of filtering on or off, autoscaling on or off ...

it goes with out saying that U can choose other days, other stations, other display options if U choose to ...

RFBurns, I'm going to u2u you, with some EE questions, if thats okay ???



[edit on 13/1/09 by geogeek]

RFBurns, I'm going to u2u you, with some EE questions, if thats okay ???

Share 'em. You've got a few other electronics designers on here, too ;-)

Originally posted by VX-7R

RFBurns, I'm going to u2u you, with some EE questions, if thats okay ???

Share 'em. You've got a few other electronics designers on here, too ;-)

Okay , i'm displaying my EE ignorance to the world ... in seismic (oil & gas) exploration geophones , i'm sure they have an autoscaling AGC built in (they have to) .. is there any reason not to believe the same here in these passive monitoring instruments ...

I believe the scale on the right hand side is the gain applied in DB?? so by what formula ?; 20log(Vin/Vout) ? , or what ? ... so what scalar would -7 represent by whatever the correct formula is (please specify, if U can ...) ??

do U think -7 would be the average for the 15 minutes .. or would that whole 15 minutes be explicitly scaled by what ever scalar -7 represents , I suspect the answer is we don't know ?? what would the EE convention be on this ??

Thanks




[edit on 13/1/09 by geogeek]

Another pop at LKWY 00:00:59 UTC.

Shows up strong at YLA, too.

Nice spike at LKWY @ 00:01:00 GMT -8 to +12 and afters...

Oh Boy do I feel dumb

But I see nuttin' recent enough to link it to

[edit on 1/13/2009 by Hx3_1963]

What happened to Sageturkey? Hasn't posted in a few days and he's right there.

Originally posted by Penster

This is a screen print of that satellite photo that was freaking me out. All the subsequent links to satellite images posted by other people after me did not take me to the same website or images. The highlighted shot is dated 12/12/08. All of the other shots around it are from different dates and have the "pink" I saw referenced in a couple posts.

Ok First up I checked the date and you are right it is Dec 2008, however I think what you are seeing is solar heating of the region. I say this because 90% of the hot red is on the side of the mountains in the region.


If you look at this and the next few pictures you can pick out the mountains.


And you can match the roads to the area as well.


(Image is of the closer resolution >500M vs 1000)

Since the bulk of the red regions are mountainous, for it to be anything but solar heating, the entire mountain would be red as well, not just one side. Also I think that the fuzzier section (N/NW) of the lake is caused by solar heating of clouds, as if you look at your image it says 20+% clouded.

Now if we could get a resolution that would let us see the thermal features of the park it would be 'cool'.

Neat shots of the region, I could wish we could see the latest ones.
M.

[edit on 13-1-2009 by Moshpet]

Originally posted by geogeek


Okay , i'm displaying my EE ignorance to the world ... in seismic (oil & gas) exploration geophones , i'm sure they have an autscaling AGC built in (they have to) .. is there any reason not to believe the same here in these passive monitoring instruments ...

I believe the scale on the right hand side is the gain applied in DB?? so by what formula ?; 20log(Vin/Vout) ? , or what ? ... so what scalar would -7 represent by whatever the correct formula is (please specify, if U can ...) ??

Thanks

I don't believe that what we're seeing along the right edge of those webicorder charts is related to gain. I think that what we see for gain is universal over the entire day's chart as specified in the fine print at the lower left.

Because the right hand legend is marked "DC" I think that might be an offset that's been applied to that particular "row" to keep it centered for a pretty display. But that's just a guess.

If you use any kind of gain switching or adjustment on an ongoing basis, then you must specify what that gain is for every instant or else you cannot get useful amplitude information from the data stream.

And of course, that's what you're suggesting that the numbers along the right hand edge could be. Gain or scaling for that particular row.

I can see how an auto scale-switching system might be nice to have, as long as you DO have the gain values for every point so you can recreate the true amplitudes everywhere.

But for these webicorder displays, I'm not sure that's what we're seeing. They'd be limited to switching the gain only at the beginning of each displayed row. Of course, they *could* do that, I suppose. That might be a function of the software that they use to create these web displays.

One of the things I see mentioned in sites talking about building your own seismograph is that a huge dynamic range is necessary. And to that end, it's not unusual to need 16 bit (or greater) resolution in the digitizing system to accommodate a reasonable dynamic range.

Using a programmable gain amp ahead of the A/D would allow you to swap gain "on the fly" but you'd need to be careful to have a secondary data "track" that holds the instant-by-instant gain setting for the data so that you can later reconstruct the true amplitudes.

I've been doing some minor research on the web with the idea of building a small seismograph to play with. I've got some old three-axis accelerometer ICs from Analog Devices that I got as samples a few years ago. I'm not sure if they'd be suitable at all, but with proper signal conditioning, maybe they'd have some promise.

The things I see shown for home-brew seismo projects all use what seems to be far more ancient technology. But there may still be good reasons for doing things the way they show (capacitive position sensing and a large mechanical rig that's dynamically dampened).

In the oil exploration systems, do they actually swap gains during any given "shot" or do they leave the gains set at one value for that event?

reply to post by Moshpet


Last question. Where's the snow and ice?

reply to post by Penster


Depending on the spectrum used to capture any given image, and on the false-colors used in the final output, you could end up not seeing snow displayed as anything we'd recognize as snow.

It'd be good to have more information for each frame to be better able to analyze what we're seeing. But the main thing is that what we see isn't always obvious in these satellite images.

reply to post by Moshpet


One quick question; I have been reading all this from December. Someone must live close enough to Yellowstone to just go over and see all this in person and report the conditions. I seem to remember from many pages ago someone did. So, go look again and report. Is there a sulphur smell? Are conditions ok? It all probably looks normal, but it is still good to keep an eye on things. I will be quiet now, and just read . Thank you.