An Instrument for Recording Ultra Low Frequency Ocean Waves

Publisher Website
Google Scholar
Abstract
An instrument has been designed to measure low amplitude waves whose frequencies fall between those of the wind‐generated ocean swell and those of the astronomic tides. Its maximum sensitivity is to waves whose period is 15 minutes, and its pass band extends approximately from 2‐minute periods to 2 hours. The suppression of the ocean swell and tides (whose amplitudes are much greater than those of the waves to be studied) is accomplished by means of capillaries and air chambers which give the instrument a response characteristic analogous to that of an electrical R—C circuit. Records obtained show the continual presence of waves in this previously unexplored portion of the spectrum of gravity waves in the sea.

This publication has 1 reference indexed in Scilit: