Yellowstone Activity

[GCANE]

Over the past few weeks I have been noticing some tremors in Yellowstone.

http://www.isthisthingon.org/Yellowstone/daythumbs.php

Notably, a large one under Old Faithful about 2 weeks ago.

Also see smaller tremors under the Lake and Madison River from time to time.

Quake activity also seems to be taking a small step up.

A few moderate, shallow quakes occurred to just the west and south of the Park over the last month.

Something to keep an eye on.





http://www.seis.utah.edu/req2webdir/rec ... stone.html


http://earthquake.usgs.gov/earthquakes/ ... 131311.php

[GCANE]

Yellowstone volcanic plume much larger than previously thought


http://arstechnica.com/science/news/201 ... pected.ars





Past imaging efforts have used seismic waves to detect the border between molten and solid rock. These have indicated that the mantle plume originates somewhere deep under Idaho and slopes eastward as it rises to meet the surface under Wyoming.

The new picture roughly agrees with this, but suggests the area heated by the plume may be far more extensive than indicated by the seismic data. It relies on what is termed magneto-telluric (MT) readings, which register subtle changes in the Earth's conductivity and magnetic fields. These register differences in temperature and composition of the rock and fluids, as these change alter the conductivity of the crust.

[GCANE]

Sharp rise in soil temperature near Vixen Geyser


http://volcanoes.usgs.gov/yvo/activity/ ... /vixen.php

[brunota2003]

Pork Chop was up in the 70s C, but earlier this week the temps dropped:

http://volcanoes.usgs.gov/yvo/activity/ ... rkchop.php

[brunota2003]

Pork Chop was up in the 70s C, but earlier this week the temps dropped:

http://volcanoes.usgs.gov/yvo/activity/ ... rkchop.php

Looks like quake activity has slowed this week, too. Hopefully just Yellowstone turning over in her slumber.