CAJ | 학술논문

　　衰减系数和浊度是描述水体光学性质的2个重要参量，研究两者间的关系不仅有助于对水中光传输衰减特性的了解，也是当前水下光电成像技术研究和应用的需要。本文选用了6种不同粒径的CaCO3微粒和1种SiO2微粒作为悬浮质，定量分析了加入悬浮液的水体衰减系数与浊度的关系，讨论了微粒粒径和折射率对上述关系的影响。实验结果表明：衰减系数与浊度间存在很好的线性关系；对于同种悬浮质来说，其线性拟合斜率与粒径的对数有较好线性关系，而其拟合截距也与粒径有线性关系；对于不同种悬浮质来说，微粒折射率会对拟合斜率产生较大影响。因此，目前尚难以直接得到由浊度仪测量值换算出衰减系数的普适关系式。
　　쇠감계수화탁도시묘술수체광학성질적2개중요삼량，연구량자간적관계불부유조우대수중광전수쇠감특성적료해，야시당전수하광전성상기술연구화응용적수요。본문선용료6충불동립경적CaCO3미립화1충SiO2미립작위현부질，정량분석료가입현부액적수체쇠감계수여탁도적관계，토론료미립립경화절사솔대상술관계적영향。실험결과표명：쇠감계수여탁도간존재흔호적선성관계；대우동충현부질래설，기선성의합사솔여립경적대수유교호선성관계，이기의합절거야여립경유선성관계；대우불동충현부질래설，미립절사솔회대의합사솔산생교대영향。인차，목전상난이직접득도유탁도의측량치환산출쇠감계수적보괄관계식。
Attenuation coefficient and turbidity are two important parameters to describe the optical properties of water. Researching the relationship between them is not only beneficial for the understanding of the attenuation characteristics of underwater light transmission, but also the research and application needs of the underwater photoelectronic imaging technology. In this paper, six different diameters of CaCO3 particles and one kind of SiO2 particles are selected as the suspended solids;the relationship between the attenuation coefficient of the water mixed with suspension and the turbidity is analyzed quantitatively;the impact of the particle diameter and the refractive index on this relationship is also discussed. The experimental results show that there is a good linear relationship between attenuation coefficient and turbidity. For the same kind of suspended solid, the slope of the linear fit and the logarithm of the particle diameter have a good linear relationship, as well as the fitting intercept and the particle diameter. For different kinds of suspended solids, the refractive index has a great impact on the fitting slope, which leads to difficulty to obtain the universal equation of attenuation coefficient directly calculated from the measurements of the turbidity.