Research for the mechanisms of generation - diffusion - adhesion of sea-salt particles

海盐颗粒生成-扩散-粘附机理研究

• 批准号: 14580553
• 负责人: NONAKA Yoshimasa
• 金额: $ 2.05万
• 依托单位: University of Miyazaki
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14580553/
• 关键词: sea-salt particles; cascade impactor; size distribution; emission flux; surf zone; wave height and period; energy dissipation; inverse problem; 波浪計算(SWAN); エネルギー散逸率; 波浪の周期・波高; データ同化; 海塩粒子; SWAN; 波浪スペクトル; 生成率; 逆推定; 質量サイズ分布; 周期・波高; 平均波周期

The data set of sea-salt mass is statistically analyzed, focusing on correlation between the sea-salt mass and wave or meteorological conditions, which consists of the pairs of samples being simultaneously colleted at the same place in a coat region by two cascade impactors. It was proved that the sea-salt mass is positively correlated with wave height or wave period. The method of inferring size distributions of sea-salt particles from cumulative mass data and the improvement of size classification by the suck amount adjustment of the sampler were discussed. The features of the inferred size distributions are as follows : The size distributions inferred by the integration method from the data are roughly similar to size distributions measured in open sea, in the range of particle radius : 0.2 μm -10 μm. In addition, the relationships between wave parameters and sea-salt data are investigated. It was concluded as follows. (1)The emission flux of sea aerosols almost depends on rate of w … More ave energy dissipation. (2)The emission flux increases as wave period does. (3)The sea-salt mass ratio of the large particles to the small ones increases as rate of wave energy dissipation does, where aerosol particles are classified into the two categories with a critical radius 1.5 μm. Moreover, a method for inferring the spatial distribution of sea-salt emission flux in surf zone from the volume-size concentrations of sea-salt particles observed near at sea shore is discussed. This method applies the boundary integration method on the transport and diffusion equation for sea-salt particles. The estimation of the spatial distributions of sea-salt flux from the observed volume-size concentrations is generally a none well posed inverse problem, so that the following disposals are necessary ; (1)reducing the sensitivity of an estimation to data error by use of the multi reference data, (2)assimilating the reference data to those computed by the model equations within an allowable limitation. The locations of effective flux sources and a tendency of time variation of flux strength inferred from the reference volume-size concentrations approximately coincide with those estimated by the wave simulation (SWAN). Less

海盐质量的数据集经过统计分析，重点是海盐质量与波浪或气象条件之间的相关性，这是由两个级联撞击器在外套区域中简单地在同一位置夹在同一位置的样品组成的。事实证明，海盐质量与波高或波周期呈正相关。讨论了从累积质量数据中推断出海盐颗粒的尺寸分布的方法，并通过采样器的吸吮量调节来改善尺寸分类。推断尺寸分布的特征如下：从数据中的集成方法推断出的尺寸分布与在粒子半径的范围内测得的大小分布大致相似：0.2μm-10μm。另外，研究了波参数与海盐数据之间的关系。总结如下。 （1）海洋气溶胶的发射通量几乎取决于W的速率……更多的AVE能量耗散。 （2）发射通量随波周期的增加而增加。 （3）大颗粒与小颗粒的海盐质量比随着波能耗散的速率而增加，在这种情况下，气溶胶颗粒被分为两类，临界半径为1.5μm。此外，讨论了一种从海岸附近观察到的海盐浓度中推断出冲浪区中海盐发射通量空间分布的方法。该方法将边界积分方法应用于海盐颗粒的传输和扩散方程。从观察到的体积大小浓度中对海盐通量的空间分布的估计通常不是一个完善的反问题，因此需要以下处理。 （1）通过使用多参考数据来降低估计对数据误差的敏感性，（2）将参考数据吸收到在允许限制内由模型方程计算的数据。从参考体积大小的浓度推断出的有效通量来源的位置和磁通量的时间变化趋势与波浪模拟（天鹅）估计的浓度大致相吻合。较少的

项目成果

Estimation of the variation of the sea aerosol emission flux in surf zone

海浪区海洋气溶胶排放通量变化的估算

• 发表时间: 2004
• 期刊: Memoirs of the Faculty of Education and Culture, Natural Science 11
• 作者: Y.Nonaka;Y Ookouchi;T.Kawasaki
• 通讯作者: T.Kawasaki

Measurement and analysis of marine aerosol in coast region

沿海地区海洋气溶胶的测量与分析

• 发表时间: 2005
• 期刊: Memoirs of the Faculty of Education and Culture, Natural Science 13
• 作者: Y.Nonaka;T.Kawasaki
• 通讯作者: T.Kawasaki

野中善政, 大河内康正, 川崎拓哉: "海岸における海塩粒子サイズ分布の観測と解析(2)"2003年度日本気象学会講演要旨集. 25. 27-28 (2004)

野中芳正、大河内康正、川崎拓也：《海岸海盐粒径分布的观测与分析（2）》2003年日本气象学会讲座摘要（2004年）。

沿岸域における海塩粒子生成率の推定について

沿海地区海盐颗粒产生率估算

• 发表时间: 2005
• 期刊: 「2004年度日本気象学会九州支部発表会」講演要旨集 26
• 作者: 野中善政;大河内康正;川崎拓哉
• 通讯作者: 川崎拓哉

沿岸域における海塩粒子濃度の観測と解析

沿海地区海盐颗粒浓度观测分析

• 发表时间: 2005
• 期刊: 宮崎大学教育文化学部, 自然科学 13
• 作者: 野中善政;川崎拓哉
• 通讯作者: 川崎拓哉