Accession Number : AD0489756

Title :   LABORATORY STUDY OF THE EFFECT OF AN UNDERWATER ACOUSTIC FIELD ON AN ATMOSPHERIC ELECTRIC FIELD.

Descriptive Note : Final technical rept.,

Corporate Author : CHESAPEAKE INSTRUMENT CORP SHADY SIDE MD

Personal Author(s) : Simmons, Bernard ; Zedaker, William L., Jr

Report Date : MAY 1966

Pagination or Media Count : 41

Abstract : A laboratory model was set up to study the effect of an underwater acoustic field on an atmospheric electric field. Measurable results, in satisfactory agreement with calculations, were obtained using a static field of 1,000 volts/meter, approximately 10 times that of the earth's field, and acoustic pressures in the range 100 to 1,000 dynes/square cm, at frequencies near 10KHz. In spite of the favorable laboratory conditions it was necessary to utilize a correlation technique to measure the low signals, which were in the range from 2 to 20 microvolts/meter. The electric field probe was essentially an antenna -- 2 cm in length. From the standpoint of instrumentation, the probe and associated detection equipment represent the development of an extremely sensitive electric field meter for low frequencies. (Author)

Descriptors :   *ELECTRIC FIELDS), (*UNDERWATER SOUND, MECHANICAL WAVES, VIBRATION, STATIC ELECTRICITY, DETECTION, MEASURING INSTRUMENTS, DETECTORS, SENSITIVITY, RADIOFREQUENCY, OSCILLATORS, CAPACITORS, AMPLIFIERS, HYDROPHONES, TANKS(CONTAINERS), ALUMINUM, SEA WATER, SURFACES, OCEANS, LABORATORIES, BIBLIOGRAPHIES.

Subject Categories : Acoustics
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE