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  1. 掲載誌一覧
  2. 鹿児島大学水産学部紀要
  3. vol.22-2
  1. 水産学部
  2. 水産学部・紀要論文

海面における海塩粒子の生成に関する研究

http://hdl.handle.net/10232/13740
http://hdl.handle.net/10232/13740
a200c535-aafe-4825-b602-9249b5820c67
名前 / ファイル ライセンス アクション
AN00040498_v22-2_p49-107.pdf AN00040498_v22-2_p49-107.pdf (6.4 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2012-05-10
タイトル
タイトル Studies on the Production of Sea-Salt Particles on the Sea Surface
タイトル言語 en
タイトル
タイトル 海面における海塩粒子の生成に関する研究
タイトル言語 ja
著者 茶円, 正明

× 茶円, 正明

WEKO 122348

en CHAEN, Masaaki

ja 茶円, 正明

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言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ departmental bulletin paper
要約
内容記述タイプ Other
内容記述 Systematic observations of sea-salt particles in the lowest atmospheric layer over the oceans are carried out on board ships at sea. The salt-mass distributions of sea-salt particles, ranging from 10^{-11} gm to 10^{-7} gm are obtained by combined use of hand-operated impactors and rod samplers. The vertical distribution of sea-salt particles in the lowest several meters above the sea surface can be expressed by a modified form of Toba's equilibrium theory of sea-salt particles, by introducing the effective relative humidity. The feature of the mean salt-mass distribution of the number concentration of sea-salt particles, θ, at a height of 6 m for each wind force, for the salt-mass class of log m ≦ 2. 25 (m : the salt mass in 10^{-12} gm unit), is close to a straight-line segment on a logarithmic diagram, and it is expressed, as the first approximation, by Junge's form concerning the size distribution of aerosols in the atmosphere. It is found that the number concentration of sea-salt particles, θ, increases linearly on a logarithmic diagram with a dimensionless variable, u_*L/ν, which represents the overall degree of the breaking of wind waves, where u_*is the friction velocity, L the significant wave length and ν the kinematic viscosity of air. The reference level of the production of sea-salt particles, z_1-surface, is newly introduced, and the number concentration of sea-salt particles at the z_1-surface, θ_1 is discussed. The character of the salt-mass distribution of θ_1 is always almost same, even though the wind speed and the state of sea surface may change, and the absolute value of θ_1 is proportional to u_*L/ν. The production rate of sea-salt particles, F_1, at the z_1-surface can be obtained from the value of θ_1 by F_1 = w_sθ_1, where w_s represents the terminal velocity of sea-water droplet. The value of F_1 has the minimum at near log m = 3. The character of the salt-mass distribution of F_1 is also always almost same as in the case of θ_1, and the absolute value changes with wind and sea states, in proportion to u_*L/ν. In conclusion, the values of θ_1 and F_1 are presented for each class of salt mass as a function of u_*L/ν. Also, they are presented approximately as a function of wind speed alone, assuming the representative sea state as a function of wind speed.
内容記述言語 en
収録雑誌名 ja : 鹿児島大学水産学部紀要
en : Memoirs of Faculty of Fisheries Kagoshima University

巻 22, 号 2, p. 49-107, 発行日 1974-02-20
作成日
日付 1974-02-20
日付タイプ Issued
ISSN
収録物識別子タイプ PISSN
ISSN 0453087X
NII書誌ID(雑誌)
収録物識別子タイプ NCID
NC ID AN00040498
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
NDC
主題Scheme NDC
主題 660
公開者・出版者
出版者 鹿児島大学
出版者言語 ja
公開者・出版者
出版者 Kagoshima University
出版者言語 en
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