Scientist Says Yellowstone Bulge Could Mean Explosion
Lisa Morgan, the geologist leading a US Geological Survey team studying a bulge beneath Yellowstone Lake says, “it could be the precursor to a hydrothermal explosion.” Hydrothermal explosions take place when water is superheated by lava and they can be extremely violent.
Geothermal activity and earth movements have been increasing in Yellowstone in recent months. In August, a magnitude 4.4 earthquake struck the area, and in July parts of a trail that passes the Norris Geyser Basin were shut because ground temperatures reached 200 degrees.
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