This experiment deployed a temporary seismic array across Newberry Volcano to record reflection off of the geophysical identified magma body underlying the volcano. Newberry is a large recently active volcano that is most likely underlain by a shallow magma chamber; characterizing the size, depth, and percentage of melt in a magma rich volume is critical for assessing the hazard posed by a volcano. But imaging magma systems with seismic techniques is difficult because they are anisotropic, highly attenuating and seismic waves tend to refract around them. Theorectical waveform modeling and seismological surveys, however, show that low incidence angle reflections from explosive sources produce energetic P and S wave signals from contacts with large impedance contrasts, such as the top of a magma rich body. This experiment take advantage of previously planned explosions near Newbery Volcano in central Oregon to investigate this promising technique.
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