NOISY: Noise Observatory for Imaging the Subsurface beneath Yellowstone
The Stanford Broadband Siemsic Network is planning to delploy about 12 broadband seismometers around the Yellowstone National Park . Yellowstone National Park is an amazing location because of the impressive variety of natural wonders that can be found there, including wildlife, geysers, and hot springs. By placing many sensors around the park, seismologists can image the subsurface structure beneath the park. A new technique allows seismologists to make use of many small signals from small “noise” sources within the Earth (such as geysers and earthquakes that are too small to feel). By averaging months of recordings on many stations, seismologists can determine how seismograms vary between any pair of stations. From this, we can image the forces at work beneath the surface.
In the summer of 2009, Stanford students will install 12 seismometers around Yellowstone National Park. These 12 sensors will be complemented by sensors from the Volcano Observatory and USArray. The ~30 sensors around the park will provide an unprecedented view into the depths below Yellowstone. NOISY will provide an image of the hot volcanic plumbing beneath the Yellowstone Caldera. The image will illuminate Yellowstone's unique geothermal heat source.