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Title
  • ja 地表付近における巨大海塩粒子存在量の変化について
Alternative
  • On the Variations of the Amount of Giant Sea-Salt Particles near the Ground
  • チヒョウ フキン ニオケル キョダイ カイエン リュウシ ソンザイリョウ ノ ヘンカ ニツイテ
Creator
Subject
  • NDC 660
Description
  • Other The number concentrations of giant sea-salt particles for each salt-mass class near the ground were observed in Kagoshima, in the period of Sept. 4, 1962 through Oct.1, 1963. The particle number concentration often increased during the approach and the passage of cyclones or fronts, and of typhoons. The low number concentrations of sea-salt particles occurred under the meteorological conditions of the comparatively long period of rainfall, such as Bai-u, and the partly cloudy condition due to anticyclones. It is found that there is a seasonal variation in the monthly mean particle number concentration, which has maxima in winter and summer and minima from late spring to early summer and autumn. The amount of the monthly mean particle number concentration may be related to both the monthly mean wind speed and precipitation. The salt-mass distributions of sea-salt particles in several characteristic meteorological conditions are presented. Aspects of the increase of particle number concentration caused by the approach and the passage of cyclones or fronts depend largely on the increase or the decrease of the distance from coast, as well as on the amount of precipitation, in comparison with those in the previous one or two days. The impaction-sedimentation ratio, γ, is estimated from the observations of particle number concentrations in different wind directions under the anticyclonic meteorological conditions. The value ofγ estimated is 2-5 for 2,3,4 m/sec, and 3-20 for 5,6,7 m/sec in wind speed, respectively.
Publisher 鹿児島大学
Date
    Created2016-10-31
Language
  • jpn
Resource Type departmental bulletin paper
Version Type VoR
Identifier URI http://hdl.handle.net/10232/13761
Relation
  • http://hdl.handle.net/10232/13757
Journal
    • NCID AN00040498
    • ISSN 0453-087X
      • 鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University
      • Volume Number20 Issue Number1 Page Start73 Page End89
File
Oaidate 2023-07-18