偏振海洋激光雷达探测黄海水母特性  

Characteristics of jellyfish in the Yellow Sea detected by polarized oceanic lidar

作　　者：王晓彬[1] 赵泓楷 周雨迪 张芳[2,3] 徐沛拓[1] 刘群 刘崇[1] 刘东[1] Wang Xiaobin;Zhao Hongkai;Zhou Yudi;Zhang Fang;Xu Peituo;Liu Qun;Liu Chong;Liu Dong(Ningbo Research Institute,College of Optical Science and Engineering,Zhejiang University,Hangzhou 310027,China;Key Laboratory of Marine Ecology and Environmental Sciences,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China)

机构地区：[1]浙江大学宁波研究院光电科学与工程学院,浙江杭州310027 [2]中国科学院海洋研究所海洋生态与环境科学重点实验室,山东青岛266071 [3]中国科学院海洋大科学研究中心,山东青岛266071

出　　处：《红外与激光工程》2021年第6期114-120,共7页Infrared and Laser Engineering

基　　金：国家重点研发计划(2016YFC1400900);国家自然科学基金(41775023);浙江省自然科学基金杰出青年项目(LR19D050001);中央高校基础科研项目(2019FZJD011);现代光学仪器国家重点实验室创新项目;浙江大学宁波校区人才引进启动基金项目(20201203Z0175);杭州市生态环境科学研究院项目(703204C20201117);中国博士后科学基金(2018M640554)。

摘　　要：近年的研究表明:全球的许多海湾和海区出现水母数量增加甚至暴发的现象,对海洋生态环境、海洋渔业、滨海旅游业、核电安全等产生了负面影响。2017年8月,自主研制的船载偏振海洋激光雷达在黄海海域开展了实验测量,观测到丰富的强散射个体信号,结合视频监控信息,判断信号来源于水母(沙海蛰),证明偏振海洋激光雷达能够实现水母个体的遥感探测。研究结果表明,同一水域水母的光学特性表现出聚类的特点;不同水域的水母信号对比度相近、退偏率不同,说明水母的光学特性与其生存水域环境密切相关。因此,偏振海洋激光雷达可以高效、经济、精确监测水母分布和数量变动状况,其未来的推广可以完善我国海域水母动态监测手段。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.

关 键 词：偏振海洋激光雷达 强散射个体 水母探测 

分 类 号：P715.7[天文地球—海洋科学]