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Contemporary 'broadband' seismographs like this one are able to record movements over an impressive range of frequencies and amplitudes -- from big shakes lasting minutes to tiny twinges lasting just fractions of a second. Seismologists at MU have positioned similar machines in some of the world's most quake-prone regions including, most recently, the high Tibetan Plateau. You can hear seismologist Eric Sandvol discuss the Tibet project, and see photos from the field, by clicking the play button at top left. |