Columbia ocean-bottom station


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The first permanent ocean-bottom geophysical station, installed by the Lamont Geological Observatory of Columbia University, has enabled scientists to obtain new data on earthquakes, sea storms, currents, and tides. The Lamont ocean-bottom station rests at a depth of nearly 2½ miles, 124 miles west of San Francisco. It is connected by a cable to a command station in Point Arena, California, 85 miles away. Its three spheres are each 22 inches in diameter and are filled with ultra-sensitive measuring instruments, including low-frequency and short-period seismometers, and devices to measure current velocities, tidal and acoustic pressures, and water temperature.