山东科学 ›› 2025, Vol. 38 ›› Issue (6): 1-9.doi: 10.3976/j.issn.1002-4026.2025054

• 海洋科技与装备 •    下一篇

双波长水体颗粒体散射函数测量仪研制与测量

陶邦一1(), 韩昶1,2, 厉运周3,*(), 潘耀瑞1,4, 李常鹏1,4, 毛志华1,2   

  1. 1.自然资源部第二海洋研究所 卫星海洋环境监测预警全国重点实验室, 浙江 杭州 310012
    2.上海交通大学 海洋学院, 上海 200030
    3.齐鲁工业大学(山东省科学院) 海洋仪器仪表研究所 海洋动力-物理环境与智能感知全国重点实验室, 山东 青岛 266061
    4.浙江大学 海洋学院, 浙江 舟山 316021
  • 收稿日期:2025-05-11 修回日期:2025-09-23 出版日期:2025-12-20 上线日期:2025-11-18
  • 通信作者: 厉运周 E-mail:taobangyi@sio.org.cn;lyz@qlu.edu.cn
  • 作者简介:陶邦一(1981—),博士,研究员,研究方向为体散射函数测量。E-mail:taobangyi@sio.org.cn
  • 基金资助:
    齐鲁工业大学(山东省科学院)科教产融合试点工程重大创新类项目(2025ZDYS01);山东省重点研发计划(2023ZLYS01);国家重点研发计划(2022YFC3104200);自然资源部第二海洋研究所科研基金项目(SZ2332)

Development of a dual-wavelength instrument for measuring the volume scattering function of aquatic particles

TAO Bangyi1(), HAN Chang1,2, LI Yunzhou3,*(), PAN Yaorui1,4, LI Changpeng1,4, MAO Zhihua1,2   

  1. 1. State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
    2. School of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, China
    3. State Key Laboratory of Physical Oceanography, Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao 266061, China
    4. Ocean College, Zhejiang University, Zhoushan 316021, China
  • Received:2025-05-11 Revised:2025-09-23 Published:2025-12-20 Online:2025-11-18
  • Contact: LI Yunzhou E-mail:taobangyi@sio.org.cn;lyz@qlu.edu.cn

摘要:

水体颗粒物的体散射函数(VSF)是水体最主要的固有光学特性之一,可用来表征水体颗粒物的含量、形状、粒径谱、组分等特性。目前国内尚缺乏覆盖多波长、广角度测量范围的VSF测量仪。本文基于双潜望镜式光路结构与旋转探测器相结合的探测方式,构建了一套双波长(488 nm 和 532 nm)水体颗粒体散射函数测量系统,实现了1.5°~178.5°范围内双波长水体颗粒体散射函数的测量。基于系统的光路结构以及辐射传输原理进行了对系统开展了基线矫正、角度及幅值标定等校准实验。测量3 μm直径聚苯乙烯标准颗粒结果与米散射理论计算值吻合程度较高,证明了系统测量VSF的准确性。基于此测量系统获取了我国东海及南海海域真实水体颗粒物双波长体散射函数测量数据,分析了不同波长之间体散射函数特性的差异,测量的VSF可以为辐射传输模型中VSF的参数化提供依据。同时,还基于实测数据计算了不对称因子,从体散射的角度分析了不同波长之间散射特征的差异。

关键词: 海洋光学, 体散射函数, 散射相函数, 不对称因子, 水体颗粒, 水体光学特性, 散射测量

Abstract:

The volume scattering function (VSF) of aquatic particles is one of the most important inherent optical properties of water. However, a VSF measurement instrument in China that can cover multiple wavelengths and a wide angular range remains to be investigated. Herein, we developed a dual-wavelength (488 nm and 532 nm) aquatic particle VSF measurement system that integrates dual-periscope optical configuration with a rotating detector. This system enables VSF measurements across a scattering angle range of 1.5°~178.5° for both wavelengths. According to the optical configuration and radiative transfer principles of the system, baseline correction, angular calibration, and amplitude calibration experiments were conducted on the system. The measurement results for 3 μm polystyrene standard particles agreed well with the Mie scattering theoretical values, demonstrating the VSF measurement accuracy of the system. The system was used to perform dual-wavelength VSF measurements of natural seawater particles from the East China Sea and South China Sea and to analyze the differences in VSF characteristics between the two wavelengths. The measured VSFs can provide a basis for VSF parameterization in the radiative transfer models. In addition, asymmetry factors were calculated from the measured data to analyze the differences in scattering characteristics between the two wavelengths from the volume scattering perspective.

Key words: ocean optics, volume scattering function, scattering phase function, asymmetry factor, aquatic particle, optical properties of water, scattering measurement

中图分类号: 

  • P714

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