Steaming, gurgling mudpots in the active hydrothermal system of Yellowstone.
For those of you following <a href="http://powelltribune.com/index.php/content/view/3018/1/" target=" _blank">Yellowstone (I think there might be a few of you), I've plotted up the earthquakes since 1/27 (see below) - and sure enough, although there is a lot of scatter, they are getting shallower - however what this exactly means is unclear. You can see my plots from <a href="http://bigthink.com/ideas/23660" target=" _blank">1/22-28 here. As many of you have mentioned, a caldera like Yellowstone is a big interconnected system, so a solely tectonic source of this is still possible as the displacement migrates through the fractured caldera rocks.
UPDATED: Now with error bars! The line divides the well constrained (to left) from the poorly constrained (to right).
This all being said, YVO's current status statement still reads:
" At this time, YVO scientists and their collaborators have detected no anomalous ground deformation, strain, ...
