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Improving accuracy of prediction of non-supercell tornado genesis based on clarification of flow structure

Research Project

Project/Area Number 15H02994
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Natural disaster / Disaster prevention science
Research InstitutionKochi University

Principal Investigator

Koji Sassa  高知大学, 教育研究部自然科学系理工学部門, 教授 (50263968)

Co-Investigator(Kenkyū-buntansha) 本田 理恵  高知大学, 教育研究部自然科学系理学部門, 教授 (80253334)
宮城 弘守  宮崎大学, 工学部, 助教 (90219741)
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2015: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Keywords竜巻 / レーダー観測 / 漏斗雲 / 深層学習 / 発生環境 / レーダー / 突風災害 / 室内実験 / PIV / 画像解析 / 気象災害 / 減災
Outline of Final Research Achievements

Structures of parent clouds caused 10 tornadoes were investigated by using radar analysis. 2 parent clouds of them were supercell type. One of them was found to have peculiar structure that was intensified by rear inflow.
Automatic detection of funnel cloud from the picture observed by surveillance cameras was realized by using deep learning method. We also evaluated the intensity of tornadoes from the pictures.
We clarified the relevant condition for non-supercell tornado genesis with the laboratory experiments. The condition was the relationship among the environmental flow, cold outflow and updraft. We also confirmed that the tornado-like vortices had not only updraft region but also downdraft region.

Academic Significance and Societal Importance of the Research Achievements

レーダーにより捉えた竜巻親雲の渦の存在や監視カメラにより自動検出される漏斗雲の様子は、すぐにでも実装して竜巻注意情報の高精度化に寄与できる成果である。日中であれば、効果なレーダーの観測対象地域外であっても監視カメラと自動検出アルゴリズムの実装により、海上から接近する竜巻に対して十分な注意喚起を行うことができる。また、通常とは異なる配置のスーパーセルが発見されたことは気象学上の意義が大きく、その形成環境を明らかにするなど当該分野の発展が期待できる。室内実験の成果は竜巻発生予測に新たな環境指標を与える可能性を持つ知見として、今後活用が期待される。

Report

(4 results)
  • 2018 Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (51 results)

All 2018 2017 2016 2015

All Journal Article (9 results) (of which Peer Reviewed: 3 results,  Open Access: 6 results,  Acknowledgement Compliant: 7 results) Presentation (41 results) (of which Int'l Joint Research: 10 results,  Invited: 2 results) Funded Workshop (1 results)

  • [Journal Article] ネットワークカメラを用いた災害情報マイニングの試みー深層学習による竜巻とその前兆状態の検出ー2018

    • Author(s)
      藤井 祐貴,檜垣 啓汰,中山 慎也,本田 理恵,佐々 浩司
    • Journal Title

      DEIM Forum 2018

      Volume: - Pages: 1-8

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] Laboratory Experiment of Non-Supercell Tornado Genesis on Local Front2017

    • Author(s)
      Koji Sassa, Misa Komatsubara
    • Journal Title

      Proc. of APCWE9

      Volume: - Pages: 1-4

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 台風201616号に伴う高知の多重渦竜巻2017

    • Author(s)
      湯浅惣一郎、佐々浩司
    • Journal Title

      京都大学防災研究所台風研究会講演論文集

      Volume: 28K-05 Pages: 78-81

    • Related Report
      2016 Annual Research Report
    • Acknowledgement Compliant
  • [Journal Article] 台風201408号のアウターレインバンド内で発生した竜巻2016

    • Author(s)
      湯浅 惣一郎, 佐々 浩司
    • Journal Title

      第24回 風工学シンポジウム論文集

      Volume: 24 Pages: 109-114

    • NAID

      130005464400

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] マルチファン型風洞による竜巻発生環境の実験2016

    • Author(s)
      宮城 弘守, 佐々 浩司
    • Journal Title

      第24回 風工学シンポジウム論文集

      Volume: 24 Pages: 133-138

    • NAID

      130005464402

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Laboratory Experiment on the Environment for Non-supercell Tornadogenesis2016

    • Author(s)
      Koji Sassa, Hanaka Watanabe
    • Journal Title

      Proc. of the 11th ERCOFTAC Symposium on Engineering Turbulence Modelling and Mesurements

      Volume: 11

    • Related Report
      2016 Annual Research Report
    • Acknowledgement Compliant
  • [Journal Article] 2014年台風8号のアウターレインバンド内で発生した竜巻のレーダー解析2016

    • Author(s)
      湯浅惣一郎
    • Journal Title

      台風研究会 複合系台風災害のメカニズムに関する研究集会論文集

      Volume: 27K-03 Pages: 33-36

    • Related Report
      2015 Annual Research Report
    • Acknowledgement Compliant
  • [Journal Article] Radar analysis of two tornadoes occurred in the outer rainband of Typhoon ’Neoguri’2015

    • Author(s)
      Soichiro Yuasa and Koji Sassa
    • Journal Title

      Extended abstract of The 8th European Conference on Severe Storms

      Volume: ECSS2015-172-2.pdf Pages: 1-3

    • Related Report
      2015 Annual Research Report
    • Open Access / Acknowledgement Compliant
  • [Journal Article] Heavy rainfall in Kochi accompanied by two typhoons2015

    • Author(s)
      Koji Sassa and Kotaro Yoshimura
    • Journal Title

      Extended abstract of The 8th European Conference on Severe Storms

      Volume: ECSS2015-178-2.pdf Pages: 1-3

    • Related Report
      2015 Annual Research Report
    • Open Access / Acknowledgement Compliant
  • [Presentation] ネットワークカメラを用いた災害情報マイニングの試みー深層学習による竜巻とその前兆状態の検出ー2018

    • Author(s)
      藤井 祐貴,檜垣 啓汰,中山 慎也,本田 理恵,佐々 浩司
    • Organizer
      DEIM Forum 2018
    • Related Report
      2017 Annual Research Report
  • [Presentation] 深層学習による漏斗雲の自動検知の試み2018

    • Author(s)
      本田理恵,佐々浩司,檜垣啓汰,藤井祐貴,中山慎也
    • Organizer
      日本気象学会2018年度春季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Radar observation of some supercell-like storms causing tornadoes in Kochi Plain2017

    • Author(s)
      Koji Sassa, Soichiro Yuasa
    • Organizer
      International Workshop on Gusty Wind, Thermal Environment, and Energy Saving
    • Place of Presentation
      厚木市
    • Year and Date
      2017-03-09
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 竜巻をもたらす局地前線における水平シアーの再現2017

    • Author(s)
      佐々浩司
    • Organizer
      日本流体力学会中四国九州支部第19回支部講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 冷気外出流に伴う竜巻発生環境の再現実験2017

    • Author(s)
      佐々浩司、小松原美沙
    • Organizer
      日本風工学会年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 2016年10月5日に高知で発生した竜巻親雲の構造2017

    • Author(s)
      湯浅惣一郎、佐々浩司
    • Organizer
      日本気象学会2017年度春季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 冷気外出流の局地前線で形成される竜巻状渦2017

    • Author(s)
      佐々浩司、西井章
    • Organizer
      日本流体力学会年会2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] ドップラーレーダーにより検出される渦の視線距離依存性2017

    • Author(s)
      佐々浩司、西藤大輝
    • Organizer
      日本流体力学会年会2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] レーダーネットワークを活用した統合防災システムの構築2017

    • Author(s)
      山中稔、佐々浩司、橋本学、中川一、川池健司、張浩、森牧人、村田文絵、寺尾徹
    • Organizer
      第54回自然災害科学総合シンポジウム
    • Related Report
      2017 Annual Research Report
  • [Presentation] Mini supercell accompanied by multiple vortex tornado in Kochi, Japan2017

    • Author(s)
      Koji Sassa, Soichiro Yuasa
    • Organizer
      ECSS2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Measurement of the three dimensional velocity field of tornado-like vortex by the experimental study2017

    • Author(s)
      Saki Tanimoto, Koji Sassa
    • Organizer
      ECSS2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 気象監視カメラのための自動特徴抽出アルゴリズムの検討 -1.雲領域自動抽出 -2017

    • Author(s)
      藤井祐貴、檜垣啓汰、本田理恵、佐々浩司
    • Organizer
      電気関係学会四国支部連合大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 気象監視カメラのための自動特徴抽出アルゴリズムの検討 -2.漏斗雲の抽出 -2017

    • Author(s)
      檜垣啓汰、藤井祐貴、本田理恵、佐々浩司
    • Organizer
      電気関係学会四国支部連合大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Photogrammetric detection of funnel clouds2017

    • Author(s)
      Koji Sassa, Rie Honda, Keita Higaki, Yuki Fujii
    • Organizer
      ISEC2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 定点カメラを用いた雲画像による気流計測と竜巻自動検出の試み2017

    • Author(s)
      佐々浩司、本田理恵、檜垣啓汰、藤井祐貴、中山慎也
    • Organizer
      日本流体力学会中四国九州支部第20回支部講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 2017年9月11日に高知県沿岸部で発生した複数の竜巻2017

    • Author(s)
      佐々浩司、西井章
    • Organizer
      日本気象学会関西支部第1回例会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 2016年10月5日に発生した高知竜巻親雲のレーダー解析2016

    • Author(s)
      湯浅惣一郎,佐々浩司
    • Organizer
      日本気象学会関西支部第2回例会
    • Place of Presentation
      高知市
    • Year and Date
      2016-12-09
    • Related Report
      2016 Annual Research Report
  • [Presentation] 台風201408号の アウターレインバンド内で発生した竜巻2016

    • Author(s)
      湯浅惣一郎,佐々浩司
    • Organizer
      第24回風工学シンポジウム
    • Place of Presentation
      東京都
    • Year and Date
      2016-12-05
    • Related Report
      2016 Annual Research Report
  • [Presentation] マルチファン型風洞による竜巻発生環境の実験2016

    • Author(s)
      宮城弘守,佐々浩司
    • Organizer
      第24回風工学シンポジウム
    • Place of Presentation
      東京都
    • Year and Date
      2016-12-05
    • Related Report
      2016 Annual Research Report
  • [Presentation] 台風201618号に伴う高知の多重渦竜巻2016

    • Author(s)
      湯浅惣一郎,佐々浩司
    • Organizer
      平成28年度京都大学防災研究所共同研究集会「台風研究会」
    • Place of Presentation
      宇治市
    • Year and Date
      2016-11-26
    • Related Report
      2016 Annual Research Report
  • [Presentation] Peculiar supercell tornadoes accompanied by Typhoon ‘Neogri’2016

    • Author(s)
      Soichiro Yuasa, Koji Sassa
    • Organizer
      The 28th AMS Conference on Severe Local Storms
    • Place of Presentation
      Portland, OR, 米国
    • Year and Date
      2016-11-07
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] アウターレインバンド内で発生した特異なミニスーパーセル2016

    • Author(s)
      湯浅惣一郎,佐々浩司
    • Organizer
      日本気象学会2016年度秋季大会
    • Place of Presentation
      名古屋市
    • Year and Date
      2016-10-26
    • Related Report
      2016 Annual Research Report
  • [Presentation] ドップラーレーダーによる自動渦検出の試み2016

    • Author(s)
      湯浅惣一郎,佐々浩司
    • Organizer
      日本流体力学会年会2016
    • Place of Presentation
      名古屋市
    • Year and Date
      2016-09-26
    • Related Report
      2016 Annual Research Report
  • [Presentation] 対向する気流中における竜巻発生実験2016

    • Author(s)
      佐々浩司、小松原美沙
    • Organizer
      日本流体力学会年会2016
    • Place of Presentation
      名古屋市
    • Year and Date
      2016-09-26
    • Related Report
      2016 Annual Research Report
  • [Presentation] マルチファン型風洞を用いた竜巻実験2016

    • Author(s)
      宮城弘守,佐々浩司
    • Organizer
      日本流体力学会年会2016
    • Place of Presentation
      名古屋市
    • Year and Date
      2016-09-26
    • Related Report
      2016 Annual Research Report
  • [Presentation] Laboratory Experiment on the Environment for Non-supercell Tornadogenesis2016

    • Author(s)
      Koji Sassa, Hanaka Watanabe
    • Organizer
      11th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements
    • Place of Presentation
      Parelmo, Italy
    • Year and Date
      2016-09-21
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ノンスーパーセル竜巻発生環境の再現実験2016

    • Author(s)
      佐々浩司,渡部葉奈可
    • Organizer
      日本流体力学会中四国・九州支部講演会
    • Place of Presentation
      高知市
    • Year and Date
      2016-06-25
    • Related Report
      2016 Annual Research Report
  • [Presentation] 台風201408号に伴う竜巻親雲の遷移過程2016

    • Author(s)
      湯浅惣一郎,佐々浩司
    • Organizer
      日本地球惑星科学連合 2016年大会
    • Place of Presentation
      千葉市
    • Year and Date
      2016-05-22
    • Related Report
      2016 Annual Research Report
  • [Presentation] The statistical features of vortices in various MCSs appeared around Tosa Bay, Japan2016

    • Author(s)
      Koji Sassa, Shin Watanabe
    • Organizer
      ICMCS-XI
    • Place of Presentation
      釜山、韓国
    • Year and Date
      2016-04-25
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 突風被害の実態2016

    • Author(s)
      佐々浩司,喜々津仁密
    • Organizer
      日本風工学会年次大会
    • Place of Presentation
      東京都
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 2014年台風8号に伴う竜巻親雲の構造2015

    • Author(s)
      湯浅惣一郎、佐々浩司
    • Organizer
      日本気象学会関西支部第2回例会
    • Place of Presentation
      高松市
    • Year and Date
      2015-12-18
    • Related Report
      2015 Annual Research Report
  • [Presentation] 室戸レーダーにより捕捉された降水システム内の渦の統計解析2015

    • Author(s)
      渡邉伸、佐々浩司
    • Organizer
      日本気象学会関西支部第2回例会
    • Place of Presentation
      高松市
    • Year and Date
      2015-12-18
    • Related Report
      2015 Annual Research Report
  • [Presentation] 2014年台風8号のアウターレインバンド内で発生した竜巻のレーダー解析2015

    • Author(s)
      湯浅惣一郎、佐々浩司
    • Organizer
      京都大学防災研究所台風研究会
    • Place of Presentation
      宇治市
    • Year and Date
      2015-10-31
    • Related Report
      2015 Annual Research Report
  • [Presentation] 高知周辺で発生する雲内の渦のレーダー解析2015

    • Author(s)
      渡邉伸、佐々浩司
    • Organizer
      日本気象学会2015年度秋季大会
    • Place of Presentation
      京都市
    • Year and Date
      2015-10-28
    • Related Report
      2015 Annual Research Report
  • [Presentation] 台風201408号に伴う竜巻の高知大MPレーダーによる解析2015

    • Author(s)
      湯浅惣一郎、佐々浩司、村田文絵
    • Organizer
      日本気象学会2015年度秋季大会
    • Place of Presentation
      京都市
    • Year and Date
      2015-10-28
    • Related Report
      2015 Annual Research Report
  • [Presentation] 2014年台風8号に伴い高知で発生した竜巻親雲のレーダー解析2015

    • Author(s)
      湯浅惣一郎、佐々浩司
    • Organizer
      日本流体力学会年会2015
    • Place of Presentation
      東京都
    • Year and Date
      2015-09-26
    • Related Report
      2015 Annual Research Report
  • [Presentation] 水平シアー場における竜巻生成過程の実験2015

    • Author(s)
      渡部葉奈可、佐々浩司
    • Organizer
      日本流体力学会年会2015
    • Place of Presentation
      東京都
    • Year and Date
      2015-09-26
    • Related Report
      2015 Annual Research Report
  • [Presentation] マルチファン型風洞による竜巻発生環境の検討2015

    • Author(s)
      宮城弘守、佐々浩司
    • Organizer
      日本流体力学会年会2015
    • Place of Presentation
      東京都
    • Year and Date
      2015-09-26
    • Related Report
      2015 Annual Research Report
  • [Presentation] Radar analysis of two tornadoes occurred in the outer rainband of Typhoon ’Neoguri’2015

    • Author(s)
      Soichiro Yuasa and Koji Sassa
    • Organizer
      The 8th European Conference on Severe Storms
    • Place of Presentation
      Wiener Neustadt (Austria)
    • Year and Date
      2015-09-14
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Heavy rainfall in Kochi accompanied by two typhoons2015

    • Author(s)
      Koji Sassa and Kotaro Yoshimura
    • Organizer
      The 8th European Conference on Severe Storms
    • Place of Presentation
      Wiener Neustadt (Austria)
    • Year and Date
      2015-09-14
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Characteristics of the supercell causing Saitama tornado on 2 September 20132015

    • Author(s)
      Koji Sassa, Yasuko Furuta and Akiko Miyajima
    • Organizer
      The 8th European Conference on Severe Storms
    • Place of Presentation
      Wiener Neustadt (Austria)
    • Year and Date
      2015-09-14
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Funded Workshop] International Workshop on Photogrammetric analysis of tornado structure2016

    • Place of Presentation
      Shinjuku, Tokyo
    • Year and Date
      2016-03-03
    • Related Report
      2015 Annual Research Report

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Published: 2015-04-16   Modified: 2020-03-30  

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