Quoted: “The state of knowledge of the subsurface is just at the beginning,” says University of Wisconsin-Madison geophysicist Harold Tobin, “Weâ??re at the point now where we need to move our experiments from the lab and see if what we think is happening is actually occurring on a larger-scale.” To that end, Tobin and his team have drilled 1-mile deep holes in a major fault zone off the coast of Japan and placed instruments inside fault lines to record subtle changes in activity.
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