• Infrared and Laser Engineering
  • Vol. 50, Issue 6, 20211038 (2021)
Xiaobin Wang1, Hongkai Zhao1, Yudi Zhou1, Fang Zhang2、3, Peituo Xu1, Qun Liu1, Chong Liu1, and Dong Liu1
Author Affiliations
  • 1Ningbo Research Institute, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
  • 2Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
  • 3Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
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    DOI: 10.3788/IRLA20211038 Cite this Article
    Xiaobin Wang, Hongkai Zhao, Yudi Zhou, Fang Zhang, Peituo Xu, Qun Liu, Chong Liu, Dong Liu. Characteristics of jellyfish in the Yellow Sea detected by polarized oceanic lidar[J]. Infrared and Laser Engineering, 2021, 50(6): 20211038 Copy Citation Text show less

    Abstract

    Recent studies have shown an increase or even outbreaks of jellyfish in many bays and seas around the world, which has a negative impact on the marine ecological environment, marine fisheries, coastal tourism, nuclear safety and so on. In August 2017, the self-developed shipborne polarized oceanic lidar carried out experimental measurements in the Yellow Sea. Rich strongly scattered individual signals were observed. Combined with the video monitor information, the signals were determined to come from the jellyfish (Nemopilema nomurai), demonstrating the polarized oceanic lidar is available to realize the remote sensing detection of jellyfish. The results show that the optical properties of jellyfish in the same waters show clustering. The signal contrast distribution of jellyfish in different waters was similar, and the distribution of depolarization rate was different, indicating that the optical properties of jellyfish were closely related to the water environment where they lived. As a result, the polarized oceanic lidar can monitor the distribution and population changes of jellyfish efficiently, economically and accurately and its future promotion can improve the dynamic monitoring methods of jellyfish in Chinese waters.
    Xiaobin Wang, Hongkai Zhao, Yudi Zhou, Fang Zhang, Peituo Xu, Qun Liu, Chong Liu, Dong Liu. Characteristics of jellyfish in the Yellow Sea detected by polarized oceanic lidar[J]. Infrared and Laser Engineering, 2021, 50(6): 20211038
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