AN EVALUATION OF THE VIBROTRON PRESSURE TRANSDUCER AS A MID-OCEAN TSUNAMI GAGE

摘要

Upon the suggestion of Mr. Frank E. Snodgrass of the Institute of Geophysics and Planetary Physics at La Jolla, California, evaluation tests of the vibrotron absolute pressure transducer for detecting small pressure changes under a high ambient pressure were begun two years ago at the Hawaii Institute of Geophysics. This work has demonstrated the feasibility of using this instrument as a sensing element for a tsunami gage system which is bottom-mounted in oceanic depths. The methods of testing and the results are presented together with two possible instrument systems. A successful test in situ at a depth of 1500 meters is described.