Measurement of the bubble population in coastal waters using combination frequencies of MHz order

Abstract

This paper describes the use of a combinatron frequency technique to measure the size distribution of oceanic bubbles. Written between two sea trials, the paper describes how the apparatus cart be adapted to design tests for specific environments and data requirements Parameters which can be changed are the sensing volume, the bubble radii for which data points are taken, and the degree of time resolutron in the bubble counts.