Accession Number : AD0603412

Title :   PRACTICAL ASPECTS OF BOTTOM PRESSURE STUDIES,

Descriptive Note : Acoustical rept.,

Corporate Author : TEXAS UNIV AUSTIN DEFENSE RESEARCH LAB

Personal Author(s) : Ellis,G. E. ; Collins,J. L.

Report Date : 29 JUN 1964

Pagination or Media Count : 135

Abstract : This report discusses a technique for studying pressure fluctuations at the ocean bottom and relating this information to surface wave motion. The study will be adapted to cover the wave spectrum from wind waves to long waves with periods in the kilosecond range. Tidal effects, however, will not be included in the study. A treatment of the instrumentation for sensing and recording the bottom pressure fluctuations is given. The sensing element or pressure head is the solion infrasonic pressure hydrophone. The spectral analysis techniques which utilize statistical methods and sampled data procedures is described. The analysis of both single and multiple (simultaneously recorded) data records is discussed. A resume of the study or program, including a discussion of the presentation of the various measured wave parameters is presented. The use of bottom pressure data to determine the relation between the pressure fluctuations at the surface and bottom of the ocean is discussed. A detailed description of the use and calibration of the entire bottom pressure measuring system and a glossary of some of the more common terms used in spectral analysis are also given.

Descriptors :   (*HYDROSTATIC PRESSURE, OCEAN BOTTOM), OSCILLATION, OCEAN WAVES, MARINE GEOPHYSICS, HYDROPHONES, MEASUREMENT, OCEANOGRAPHIC DATA, DATA PROCESSING, STATISTICAL ANALYSIS, OCEANOGRAPHY

Distribution Statement : APPROVED FOR PUBLIC RELEASE