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Do Asian Traditional Calendars Predict Extreme Weather Events?

Research Project

Project/Area Number 19K21663
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 4:Geography, cultural anthropology, folklore, and related fields
Research InstitutionKyoto University

Principal Investigator

Furusawa Takuro  京都大学, アジア・アフリカ地域研究研究科, 教授 (50422457)

Co-Investigator(Kenkyū-buntansha) 小谷 真吾  千葉大学, 大学院人文科学研究院, 教授 (90375600)
Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords異常気象 / 伝統文化 / 暦 / インドネシア / MODIS / 植生変化 / ゴカイ類 / 在来暦法 / 生業 / 気候変動 / 人類生態学
Outline of Research at the Start

伝統暦と気象との関係を明らかにするために、まず2000年から現在までのMODISデータを各地について収集し、植生指数によって経時的環境変化を抽出し、それに数理解析を加えることで季節変化とトレンド変化などを解明する。文献調査・現地調査により、伝統暦における年・月・日の違いを明らかにし、それを植生変化の各時点に一致させる。他に気象に関する各種データや、伝統暦に基づく儀礼情報を収集する。

Outline of Final Research Achievements

We examined whether the traditional calendar systems used for subsistence farming in various parts of Asia could predict abnormal weather events such as high or low rainfall and strong winds that differ from the normal year, using a combination of field and literature surveys and satellite image analysis over a period of 20 years. The Western Sumba calendar, a luni-solar calendar that incorporates a natural calendar, was considered suitable for predicting the weather conditions of the year and adapting livelihoods to natural conditions by observing natural conditions during specific seasons and comparing them with those of a normal year. The Balinese calendar, a highly structured luni-solar calendar, is thought to have moderated vegetation fluctuations regardless of weather conditions due to large-scale paddy rice cultivation with systematic water management system. However, some calendar systems are not suitable for global climate change and modern agriculture.

Academic Significance and Societal Importance of the Research Achievements

本研究は、伝統暦法を文化や歴史の観点だけではなく、各地で起こってきた異常気象の予知に役立ってきたメカニズムを解明したという点で、独創的であった。また、現在の地球規模気候変動に、伝統暦法が役立てられるかを探ったという点で、挑戦的であった。伝統暦法の中には、現代の暮らしや、気候にはなじまなくなり、その知恵が失われていくものもある。しかし、今後地球規模の気候変動が進む場合には、過去の自然状態を理解したうえで、新しい状態を予知していくことが必要になるため、伝統暦法のメカニズム解明は過去の自然状態=「平年値」を示すことができたという点で、社会に大きな貢献をした。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (9 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (1 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Book (3 results) Remarks (1 results)

  • [Int'l Joint Research] 北スマトラ大学(インドネシア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] 北スマトラ大学/インドネシア大学(インドネシア)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Indigenous Calendars in Western Sumba Island, Indonesia: Signals for “Bitterness” and “Sea Worms”2022

    • Author(s)
      Takuro Furusawa
    • Journal Title

      Research Papers of the Anthropological Institute

      Volume: 11

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Do Traditional Calendars Forecast Vegetation Changes in Western Sumba, Indonesia? Analyses of Indigenous Intercalation Methods and Satellite Time-Series Data2019

    • Author(s)
      Takuro Furusawa and Rikson Siburian
    • Journal Title

      People and Culture in Oceania

      Volume: 35 Pages: 1-30

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Indigenous Calendars in Western Sumba Island, Indonesia: Signals for "Bitterness" and "Sea Worms"2021

    • Author(s)
      Takuro Furusawa
    • Organizer
      Symposium on Calendars used in Asia (West-, South-, Southeast-, East-) and Oceania
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] ウェルビーイングを植える島2021

    • Author(s)
      古澤 拓郎
    • Total Pages
      302
    • Publisher
      京都大学学術出版会
    • ISBN
      9784814003402
    • Related Report
      2021 Annual Research Report
  • [Book] 「珍味・食わず嫌い」野林厚志(編集委員長)『世界の食文化百科事典』2021

    • Author(s)
      古澤拓郎
    • Publisher
      丸善出版
    • ISBN
      9784621305935
    • Related Report
      2020 Research-status Report
  • [Book] 「環境:オセアニアにおける植物利用の民族学」梅﨑昌裕・風間計博(編)『オセアニアで学ぶ人類学』2020

    • Author(s)
      古澤拓郎
    • Publisher
      昭和堂
    • ISBN
      9784812220054
    • Related Report
      2020 Research-status Report
  • [Remarks] ニャレ:東インドネシアの聖なる珍味

    • URL

      https://youtu.be/EXAOVrPoFcI

    • Related Report
      2021 Annual Research Report

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Published: 2019-07-04   Modified: 2023-01-30  

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