含气泡水层介质对蓝绿波段漫射光水下传输过程的影响研究

Study of Bubble Population Influence on the Diffused Blue-Green Light Transmission in the Upper Ocean Layer

风的作用使海浪发生破碎进而在海水上方形成稳定的水平均匀气泡层,并在海水与大气之间形成粗糙海面。本文采用Monte-Carlo法模拟蓝绿波段的漫射光在含气泡水层介质内的传播过程,在自然水体对光的吸收和散射基础上,分析浓度随风速变化、沿重力方向非均匀分布的气泡层以及粗糙海面对蓝绿光穿透特性影响。研究结果表明粗糙海面对透射能量的分布占主导地位,高风速下气泡层影响增强,不同波长漫射光的穿透特性受气泡层浓度变化的影响不同。

Under wind condition,horizontally homogeneous stable layer of bubble population is generated in the upper ocean because of wave breaking.Meanwhile,the air-sea interface is rough according to wind blowing.In this paper,Monte-Carlo method is employed to study the transmission process of diffused blue-green light in the upper ocean layer.On the basis of absorption and scattering by the natural water,the influence of bubble population which varies with wind speed and decreases with depth exponentially under the effect of gravity,and also the rough surface,are analyzed.The results show that the rough sea surface dominates the transmission process of diffused light.The influence of bubble population enhances at high wind speed.The transmission characteristics varies with wavelength.