A new seismological station, which is expected to provide one of the world's most sensitive combinations of instruments for measuring earthquakes and tidal forces, is being built by the California Institute of Technology near Isabella Dam in the southern part of California's Sierra Nevada. The installation, made possible by an allocation of $172 540 from the Air Force Office of Scientific Research, will be equipped with Benioff extensometers, which are named after Hugo Benioff, professor of seismology at Caltech, and are described as being capable of measuring “a squeeze or a stretch of only one‐sixteenth of an inch in the earth's crust between Pasadena and New York”.
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