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Verification of abrupt climate change in hothouse climate state from lacustrine varve record

Research Project

Project/Area Number 19H04256
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 63010:Environmental dynamic analysis-related
Research InstitutionKochi University

Principal Investigator

Hasegawa Hitoshi  高知大学, 教育研究部自然科学系理工学部門, 講師 (80551605)

Co-Investigator(Kenkyū-buntansha) 石村 豊穂  京都大学, 人間・環境学研究科, 准教授 (80422012)
山本 正伸  北海道大学, 地球環境科学研究院, 教授 (60332475)
太田 亨  早稲田大学, 教育・総合科学学術院, 教授 (40409610)
勝田 長貴  岐阜大学, 教育学部, 准教授 (70377985)
村山 雅史  高知大学, 教育研究部総合科学系複合領域科学部門, 教授 (50261350)
山田 圭太郎  立命館大学, 立命館グローバル・イノベーション研究機構(BKC), 助教 (30815494)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2020: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Keywords白亜紀 / 温室期 / 年縞 / アジア内陸 / 蒸発/降水量変動 / 太陽活動 / 千年スケール / 気候安定性 / 急激な気候変化 / 湖成層 / 地球温暖化 / 陸域気候 / 気候変動
Outline of Research at the Start

本研究では,白亜紀「温室期」の気候変動を数年~数十年の時間スケールで詳細に復元し,極端な温暖化が進行した後の気候安定性を考察する。代表者らの研究により,現在よりもCO2濃度が高く,極域氷床の存在しない白亜紀「温室期」にも,「氷期」に類似した急激な気候変化が起こっていたことが明らかになった。そこで本研究では,モンゴルの年縞湖成層を対象に独自の超高時間分解能な解析を行い,白亜紀「温室期」にアジア中緯度域の気温と降水量がどのような振幅・移行期間・周期性で変動したのかを調べ,その変動要因を検証する。そして,氷床の存在しない「温室期」モードにおける急激な気候変化の実態や,発生メカニズムの解明を目指す。

Outline of Final Research Achievements

Understanding climate variability and stability under extremely warm ‘greenhouse’ conditions in the past is essential for future climate predictions. This study examined ultra-high-resolution (seasonal- to decadal-scale) climate variability from annually laminated lacustrine deposits formed during the mid-Cretaceous in southeastern Mongolia. Inter-annual changes in lake algal productivity and micro-scale stable isotope analysis reveal a pronounced solar influence on decadal- to centennial-scale climatic variations. Ca/Ti ratios (proxy for evaporation/precipitation changes) for a ~350-kyrs interval by using XRF core scanner further indicate millennial-scale extreme drought events in inner-continental areas of mid-latitude paleo-Asia. These findings point to a previously unidentified mode of millennial-scale abrupt climate oscillations occurring under warmer ‘greenhouse’ conditions, which were possibly linked to oscillations in the strength of deep-water formation.

Academic Significance and Societal Importance of the Research Achievements

近年の人為起源CO2の排出により,200年後には大気CO2濃度が1000 ppmに達する可能性があり,地球の気候は人類が未体験のモード「温室期(Hothouse)」に入りつつあることが危惧されている。大気CO2濃度が1000ppmを超えていたのは約1億年前の白亜紀のレベルに相当する。本研究では,白亜紀「温室期」の気候変動を,数年~数十年解像度の人間生活に関わる時間スケールで詳細に復元し,極端な温暖化が進行した後の気候安定性の解明を試みた。その結果,当時のアジア内陸域は約千年毎に干ばつイベントが発生するような,千年スケールで急激な気候変化が発生する「不安定」な気候モードだった可能性が示唆された。

Report

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

    (37 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (6 results) Journal Article (9 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 9 results,  Open Access: 4 results) Presentation (22 results) (of which Int'l Joint Research: 6 results,  Invited: 2 results)

  • [Int'l Joint Research] モンゴル科学アカデミー古生物研究所(モンゴル)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] ハノーバー大学(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] モンゴル科学アカデミー古生物研究所(モンゴル)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] ハノーバー大学(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] モンゴル科学アカデミー古生物研究所(モンゴル)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ハノーファー大学(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Syngenetic rapid growth of ellipsoidal silica concretions with bitumen cores2021

    • Author(s)
      Yoshida Hidekazu、Kuma Ryusei、Hasegawa Hitoshi、Katsuta Nagayoshi、Sirono Sin-iti、Minami Masayo、Nishimoto Shoji、Takagi Natsuko、Kadowaki Seiji、Metcalfe Richard
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 4230-4230

    • DOI

      10.1038/s41598-021-83651-w

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Extraction method for fossil pollen grains using a cell sorter suitable for routine 14C dating2021

    • Author(s)
      Keitaro YAMADA, Takayuki OMORI, Ikuko KITABA, Tatsuo HORI, Takeshi NAKAGAWA
    • Journal Title

      Quaternary Science Reviews

      Volume: 272 Pages: 107236-107236

    • DOI

      10.1016/j.quascirev.2021.107236

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Relationship between tectonism and desertification inferred from provenance and lithofacies changes in the Cenozoic terrestrial sequence of the southwestern Tarim Basin2021

    • Author(s)
      Sakuma Aki、Tada Ryuji、Yoshida Tomohiro、Hasegawa Hitoshi、Sugiura Naomi、Karasuda Akinori、Wang Ke、Zheng Hongbo
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 8 Issue: 1 Pages: 1-21

    • DOI

      10.1186/s40645-021-00427-6

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Sedimentary rhythm of Mn-carbonate laminae induced by East Asian summer monsoon variability and human activity in Lake Ohnuma, southwest Hokkaido, northern Japan2020

    • Author(s)
      Katsuta Nagayoshi、Naito Sayuri、Ikeda Hisashi、Tanaka Kuniaki、Murakami Takuma、Ochiai Shinya、Miyata Yoshiki、Shimizu Mayuko、Hayano Asuka、Fukui Konami、Hasegawa Hitoshi、Nagao Seiya、Nakagawa Mayuko、Nagashima Kana、Niwa Masakazu、Murayama Masafumi、Kagawa Masako、Kawakami Shin-ichi
    • Journal Title

      Quaternary Science Reviews

      Volume: 248 Pages: 106576-106576

    • DOI

      10.1016/j.quascirev.2020.106576

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Inorganic and organic chemical characteristics and sources of suspended particulate matters in Ulaanbaatar, Mongolia2020

    • Author(s)
      Yamamoto Koshi、Suzuki Yuta、Oyunjargal Gochoobazar、Fukuda Hiroyuki、Oidov Munkhtsetseg、Hasegawa Hitoshi
    • Journal Title

      GEOCHEMICAL JOURNAL

      Volume: 54 Issue: 4 Pages: 267-276

    • DOI

      10.2343/geochemj.2.0579

    • NAID

      130007891332

    • ISSN
      0016-7002, 1880-5973
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Origin of aeolian dust emitted from the Tarim Basin based on the ESR signal intensity and crystallinity index of quartz: the recycling system of fine detrital material within the basin2020

    • Author(s)
      Yuko Isozaki, Ryuji Tada, Youbin Sun, Hongbo Zheng, Shin Toyoda, Naomi Sugiura, Akinori Karasuda and Hitoshi Hasegawa
    • Journal Title

      Geological Magazine

      Volume: 157 Issue: 5 Pages: 707-718

    • DOI

      10.1017/s0016756820000242

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 漸新統芦屋層群に見られるハンモック状斜交層理砂岩の堆積相・粒径・波長の関係と,白亜系銚子層群,中新統三崎層群との比較2020

    • Author(s)
      隈隆成,長谷川精,坂井卓
    • Journal Title

      名古屋大学博物館報告

      Volume: 35 Pages: 1-12

    • NAID

      120006824870

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Biogenically induced bedded chert formation in the alkaline palaeo-lake of the Green River Formation2019

    • Author(s)
      Kuma Ryusei、Hasegawa Hitoshi、Yamamoto Koshi、Yoshida Hidekazu、Whiteside Jessica H.、Katsuta Nagayoshi、Ikeda Masayuki
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 16448-16448

    • DOI

      10.1038/s41598-019-52862-7

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Siberian Permafrost Thawing Accelerated at the B?lling/Aller?d and Preboreal Warm Periods During the Last Deglaciation2019

    • Author(s)
      Katsuta Nagayoshi、Matsumoto Genki I.、Hase Yoshitaka、Tayasu Ichiro、Haraguchi Takashi F.、Tani Eriko、Shichi Koji、Murakami Takuma、Naito Sayuri、Nakagawa Mayuko、Hasegawa Hitoshi、Kawakami Shin‐ichi
    • Journal Title

      Geophysical Research Letters

      Volume: 46 Issue: 23 Pages: 13961-13971

    • DOI

      10.1029/2019gl084726

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 年縞湖成層から探る白亜紀中期および始新世前期“温室期”の数年~数千年スケールの気候変動2022

    • Author(s)
      長谷川精,百瀬弘基,石川航輝,隈隆成,朝日博史
    • Organizer
      令和3年度高知大学海洋コア総合研究センター共同利用・共同研究成果発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 花粉組成変化に基づく過去4万年間のモンゴル~シベリア南部の時空間的植生変遷の復元2022

    • Author(s)
      今岡良介,長谷川精,志知幸治,勝田長貴,Ichinnorov N.,村山雅史,岩井雅夫
    • Organizer
      令和3年度高知大学海洋コア総合研究センター共同利用・共同研究成果発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] マンガンクラストの縞状構造に記録される氷期-間氷期サイクルに伴う地球環境変動2022

    • Author(s)
      高馬菜々子,長谷川精,臼井朗,小田啓邦,伊藤孝,西尾嘉朗,浦本豪一郎,松崎琢也
    • Organizer
      令和3年度高知大学海洋コア総合研究センター共同利用・共同研究成果発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Reconstruction of variations in South Pacific westerly jet path during the last glacial and calibration for the water content influence of ITRAX intensity2021

    • Author(s)
      Hitoshi Hasegawa, Fuyu Nagaya, Kana Nagashima, Nagayoshi Katsuta, Masafumi Murayama, Naomi Harada
    • Organizer
      JpGU2021
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 白亜紀湖成層コアに記録される千年周期成分の抽出:モンテカルロ法による年代不確定性の検討2021

    • Author(s)
      長谷川精,朝日博史
    • Organizer
      JpGU2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] モンゴル北部の湖底堆積物から復元する最終氷期以降の植生変遷2021

    • Author(s)
      今岡良介,志知幸治,長谷川精,Ichinnorov N.,勝田長貴,Davaadorj D.,村山雅史,岩井雅夫,出穂雅実
    • Organizer
      JpGU2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 米国グリーンリバー湖成層に記録される始新世前期~中期(52.7~43.8 Ma)の全球気候変動を反映した陸域環境変動2021

    • Author(s)
      隈隆成,長谷川精,山本鋼志,Whiteside J.,Elson A., 吉田英一,三村耕一
    • Organizer
      JpGU2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] マンガンクラストの縞状構造は氷期-間氷期サイクルに起因するのか?2021

    • Author(s)
      高馬菜々子,長谷川精,臼井朗,小田啓邦,伊藤孝
    • Organizer
      日本地質学会四国支部第21回講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Millennial-scale climate instability in “hothouse” state: implication from mid-Cretaceous and Quaternary lacustrine records in Mongolia2020

    • Author(s)
      Hitoshi Hasegawa
    • Organizer
      JpGU-AGU2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reconstruction of variations in South Pacific westerly jet path during the last glacial2020

    • Author(s)
      Hitoshi Hasegawa, Fuyu Nagaya, Kana Nagashima, Nagayoshi Katsuta, Masafumi Murayama, Naomi Harada
    • Organizer
      JpGU-AGU2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Paleovegetation and paleoenvironmental changes in the northern Mongolia since MIS3 (preliminary results)2020

    • Author(s)
      Ryosuke Imaoka, Koji Shichi, Hitoshi Hasegawa, Niiden Ichinnorov, Nagayoshi Katsuta, Davaasuren Davaadorj, Masafumi Murayama, Miho Sasaoka, Masao Iwai
    • Organizer
      JpGU-AGU2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Non-marine paleoclimatic response of Early-Middle Eocene “hothouse” interval evidence from a lacustrine record of the Green River Formation in Utah, USA2020

    • Author(s)
      Kuma, R., Hasegawa, H., Yamamoto, K., Ikeda, M., Yoshida, H., Katsuta, N., Whiteside, J. H.
    • Organizer
      JpGU-AGU2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] チリ沖コアから復元する最終氷期における南半球の偏西風経路変動2020

    • Author(s)
      長屋芙結,長谷川精,長島佳奈
    • Organizer
      日本地質学会四国支部2020年愛媛大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 米国グリーンリバー層に見られる湖成チャートの堆積リズムと湖生物生産との関係性2019

    • Author(s)
      隈隆成,長谷川精,山本鋼志,吉田英一,池田昌之,勝田長貴,Whiteside J.
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] モンゴル南西部オログ湖堆積物から復元される最終氷期~完新世の古環境変動とホモ・サピエンス定着との関係性2019

    • Author(s)
      長谷川精,野間七瀬,勝田長貴,村山雅史,田村亨,出穂雅実,イチノロフN.,ダワドルジD.,長谷部徳子,笹岡美穂,岩井雅夫
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Paleoenvironmental reconstruction of southwestern Mongolia during MIS 3: new evidence from lake sediment2019

    • Author(s)
      Hasegawa, H., Noma, N., Katsuta, N., Murayama, M., Tamura, T., Izuho, M., Ichinnorov, N., Davaadorj, D., Sasaoka, M., Hasebe, N., Iwai, M.
    • Organizer
      INQUA2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] アメリカ湖水環境における生物起源チャート層の成因と堆積リズム2019

    • Author(s)
      隈隆成,長谷川精,山本鋼志,吉田英一,池田昌之,勝田長貴,Whiteside J.
    • Organizer
      日本地球化学学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] モンゴルの年縞湖成層から読み解く白亜紀中期“超温室期”の十年~千年スケール気候変動と太陽活動の気候影響2019

    • Author(s)
      長谷川精,勝田長貴,村木綏,安藤寿男,Ichinnorov N., Heimhofer U., 山本鋼志, 村山雅史, 太田亨, 山本正伸, 池田昌之, 多田隆治
    • Organizer
      日本地質学会山口大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] モンゴル北西部の湖底堆積物から復元する過去2500年間の古環境変動と植生変遷2019

    • Author(s)
      今岡良介,志知幸治,長谷川精,勝田長貴,Ichinnorov N., 笹岡美穂,岩井雅夫
    • Organizer
      日本花粉学会高知大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Non-marine paleoclimatic response of Early-Middle Eocene “hothouse” interval evidence from a lacustrine record of the Green River Formation in Utah, USA2019

    • Author(s)
      Kuma, R., Hasegawa, H., Yamamoto, K., Ikeda, M., Yoshida, H., Katsuta, N., Whiteside, J. H.
    • Organizer
      American Geophysical Union
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] モンゴルの年縞湖成層から復元する白亜紀中期におけるアジア内陸のオービタル~千年スケールの気候変動2019

    • Author(s)
      石川航輝,長谷川精,Ichinnorov N.
    • Organizer
      日本地質学会四国支部香川大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] モンゴル北西部の湖底堆積物から復元する過去2500年間の古環境変動と植生変遷2019

    • Author(s)
      今岡良介,志知幸治,長谷川精,Ichinnorov N., G. Tsolmon, 勝田長貴,笹岡美穂,村山雅史,岩井雅夫
    • Organizer
      日本地質学会四国支部香川大会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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