Experimental results on the pressure dependence of the minnaert resonance frequency for nitrogen gas bubbles in water

The dependence of pressure on the natural oscillation frequency of millimeter sized nitrogen gas bubbles in water has been examined through systematic experiments. A theoretical expression exists for the frequency with respect to several physical parameters to the bubble; most of them have been tested. In this work the dependence upon surrounding pressure (sea surface to ~4000 kPa) has been measured and compared to the theoretical frequency given by the work of Marcel Minnaert in 1933. The results show a good agreement between the theoretical “Minnaert formula” and measured data.