Prosperetti, AndreaCrum, Lawrence A.Pumphrey, H.C.2020-03-102020-03-103/15/1989Copyright 1989 Journal of Geophysical Research: Oceans. Recommended citation: Prosperetti, A., L. A. Crum, and H. C. Pumphrey. "The underwater noise of rain." Journal of Geophysical Research: Oceans 94, no. C3 (1989): 3255-3259. DOI: 10.1029/JC094iC03p03255 URL: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/JC094iC03p03255 Reproduced in accordance with the original publisher’s licensing terms and with permission from the author(s).https://hdl.handle.net/10657/6075Numerous data on the spectra of underwater noise due to natural as well as artificial rain show a prominent and characteristic peak at a frequency around 14 kHz. It is argued that this acoustic emission is due to bubbles entrained in the liquid by the impact of raindrops. The mechanics of the entrainment is such that only drops in a narrowly defined size range have a high probability of entraining bubbles. The narrowness of this size range may explain why the 14?kHz peak is so ubiquitous and well defined.en-USN/Aarticle