Real-time detection of the red tide dinoflagellate Akashiwo sanguinea using a newly developed ultrasonic acoustic technique

Title
Real-time detection of the red tide dinoflagellate Akashiwo sanguinea using a newly developed ultrasonic acoustic technique
Author(s)
김한수; 김현정; 강준수; 김병권; 정승원; 강돈혁; 김미라
KIOST Author(s)
Kim, Hansoo(김한수)Kim, Hyun Jung(김현정)null강준수Jung, Seung Won(정승원)Kang, Don Hyug(강돈혁)Kim, Mira(김미라)
Alternative Author(s)
김한수; 김현정; 강준수; 정승원; 강돈혁; 김미라
Publication Year
2017-09-26
Abstract
Red tide, known as harmful algal bloom, is caused by the proliferation of a toxic or nuisance algae species and has been the focus of worldwide research communities for several decades. Until recently, the techniques available for red tide detection were mainly microscopic and molecular techniques. However, these techniques are unable to detect in real time. Here, we have developed a technique for real-time detection of harmful algal blooms (HABs), focusing on ultrasonic acoustic backscattering properties. The developed detection system is mainly composed of a pulser-receiver board, signal processor board, control board, network board, power board, ultrasonic sensors (3.5 MHz), and environmental sensors. To evaluate the performance of the system, trails were performed in laboratory and field experiments. In the laboratory, the acoustic signal agreed with various levels of Akashiwo sanguinea (one of the HABs) densities. In field experiments (in Jangmok-Bay, South Korea), acoustic signals were not detected before blooms of A. sanguinea appeared. However, when A. sanguinea blooms appeared at density of over 3,000 cells mL-1, the acoustic signals varied with red tide occurrence density and there was a good correlation between the acoustic signal and A. sanguinea densities. Therefore, the developed ultrasonic acoustic detection system for early detection of HABs was shown to be an effective system to monitor the occurrencdetection were mainly microscopic and molecular techniques. However, these techniques are unable to detect in real time. Here, we have developed a technique for real-time detection of harmful algal blooms (HABs), focusing on ultrasonic acoustic backscattering properties. The developed detection system is mainly composed of a pulser-receiver board, signal processor board, control board, network board, power board, ultrasonic sensors (3.5 MHz), and environmental sensors. To evaluate the performance of the system, trails were performed in laboratory and field experiments. In the laboratory, the acoustic signal agreed with various levels of Akashiwo sanguinea (one of the HABs) densities. In field experiments (in Jangmok-Bay, South Korea), acoustic signals were not detected before blooms of A. sanguinea appeared. However, when A. sanguinea blooms appeared at density of over 3,000 cells mL-1, the acoustic signals varied with red tide occurrence density and there was a good correlation between the acoustic signal and A. sanguinea densities. Therefore, the developed ultrasonic acoustic detection system for early detection of HABs was shown to be an effective system to monitor the occurrenc
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23818
Bibliographic Citation
North Pacific Marine Science Organization, pp.138, 2017
Publisher
PICES
Type
Conference
Language
English
Publisher
PICES
Related Researcher
Research Interests

Marine security,Underwater Acoustics,해양방위,수중음향

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