High Speed Method of Detection of Vortex without Empirical Conditions<br>—Application to Risk-Assessment of Tropical Cyclone—

• SUGIMOTO Norihiko

  Department of Physics, Keio University

• PHAM Minh Tuan

  Graduate School of Engineering, Nagoya University

• TACHIBANA Kanta

  Graduate School of Engineering, Nagoya University

• YOSHIKAWA Tomohiro

  Graduate School of Engineering, Nagoya University

• FURUHASHI Takeshi

  Graduate School of Engineering, Nagoya University

抄録

We propose a method to evaluate intensities and influential ranges of detected vortex as an extension of high speed method to detect vortex using a streamline with enhanced curvature, which is useful to identify tropical cyclones in huge climatology data. In the proposed method, center of vortex is detected by iteration of streamline from some initial points automatically. This method has high accuracy and low computational cost, because it does not need to check empirical conditions at all grid points, as in the case of conventional method. This paper exemplifies the accuracy of the vortex risk-assessing method using observational climatology data. Results suggest that this method is available for risk-assessment of tropical cyclones under global warming predicted by high resolution models.

収録刊行物

• Theoretical and Applied Mechanics Japan

  Theoretical and Applied Mechanics Japan 57 (0), 297-307, 2009

  日本学術会議 「機械工学委員会・土木工学・建築学委員会合同IUTAM分科会」

詳細情報

• CRID: 1390001205209658368
• NII論文ID: 130004463692
• DOI: 10.11345/nctam.57.297
• ISSN: 13494244
• ISSN: 13480693
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可