Abstract
Using the 200-liter resonator, measurements of Pacific Ocean water (S=33.5%) taken from the Scripps Pier indicate agreement with Thorp that sound absorption below 1 kHz is about ten times greater than predicted considering only MgSO4 absorption. The low-frequency absorption which is primarily due to a multistate dissociation of boric acid is affected by interaction with the carbonate system. An effort to explain variations in absorption values from long-range propagation measurements in terms of the carbonate ion concentration is discussed. [This work was supported by the Office of Naval Research.]
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