Barisal Guns refer to a series of loud sonic booms heard near the Barisal region of East Bengal (currently in Bangladesh) in the 19th century. There are various theories about the origin of the sound. One common explanation is that it was caused by the sound of waves, broken up by local topography, but geological origins have also been proposed. The sound is an example of a skyquake – an unexplained sudden loud sound without corresponding earthquake activity. Similar sounds have been reported in many waterfront communities around the world such as the Ganges Delta and Brahmaputra River delta in India, the East Coast and inland Finger Lakes of the United States, as well as areas of the North Sea, Japan and Italy; and sometimes away from water.
- T.D. LaTouche, "On the Sounds Known as Barisal Guns", Report (1890-8) of the annual meeting By British Association for the Advancement of Science , Issue 60, pp. 800.
- K., Krehl, Peter O. (2008). History of shock waves, explosions and impact a chronological and biographical reference. Springer. p. 350. ISBN 9783540304210. OCLC 932632748.
- Lucifer. Theosophical Publishing Company. 1890. pp. 289–291.