@techreport{oai:jaxa.repo.nii.ac.jp:00043594,
 author = {長田, 泰－ and 井山, 和人 and 小尾, 晋之介 and 益田, 重明 and Nagata, T. and Iyama, K. and Obi, S. and Masuda, S.},
 month = {Jun},
 note = {As a laboratory model of downburst, statistics of turbulent velocity field of a vertical gravitational flow is investigated. By mechanically breaking a thin film placed at the bottom of a cylindrical container, a finite mass of a high-density liquid begins to fall into a stationary low-density liquid, forming a vertical thermal, impinging onto a horizontal ground and diverging radial outward. By employing PIV, the ensemble-averaged maps of velocity vectors, azimuthal vorticity and turbulent stresses in a meridian plane are obtained. The statistical characteristics in the downdraft stage, impinging stage and diverging stage are examined., 資料番号: NALSP0059022, レポート番号: NAL SP-59},
 title = {地面に衝突する鉛直重力流の統計的性質},
 year = {2003}
}