Acoustic properties of red tide causing microalgae Chattonella sp.: Density and sound speed contrasts and backscattering strengths

Abstract

Harmful algal bloom (HAB), so called ‘Red tide’ is a phonomenon which the sea surface becomes discolored red owing to the rapid growth and accumulation of microscopic algae. Chattonella sp. is a representative species causing the HABs in the coastal waters of Korea and Japan. This paper presents the results of the tank experiment for the acoustic backscatter measurements from single-species cultures of Chattonella sp. The result implies that an acoustic technique may be an useful tool for monitoring Chattonella sp. bloom, though further studies are still necessary.