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Do turbidites provide a record of earthquakes and tsunamis? Examination by inverse analysis using deep learning neural network

Research Project

Project/Area Number 20H01985
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 17030:Human geosciences-related
Research InstitutionKyoto University

Principal Investigator

Naruse Hajime  京都大学, 理学研究科, 准教授 (40362438)

Co-Investigator(Kenkyū-buntansha) 新井 和乃  高知大学, 海洋コア総合研究センター, 特任助教 (40757754)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2022: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2021: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords巨大津波 / 巨大地震 / イベント堆積物 / 機械学習 / 堆積プロセス / 逆解析 / 堆積作用 / 混濁流 / 津波 / 海洋地質 / 深海地形 / 堆積学 / モーフォダイナミクス / 地形学 / ニューラルネットワーク / タービダイト / 海洋地質学 / 地質災害
Outline of Research at the Start

近年になり,巨大地震・津波イベントにより深海で混濁流が発生することが発見された.一方,混濁流は日常的な嵐や洪水でも発生することが観測から明らかになっている.タービダイトは,はたして巨大地震の指標となるのだろうか?この疑問を解決するため,本研究は地震性混濁流の流速や濃度を2011年東北沖津波起源のタービダイトから復元する.そして,得られた結果を現世で観測された嵐起源混濁流の水理条件と比較し,地震性混濁流が他の成因のものよりもはるかに大規模であるとする仮説を検証する.本研究の成果は,混濁流という現象の理解を通じて,巨大地震発生頻度の解明に貢献するだろう.

Outline of Final Research Achievements

This study aims to characterize the characteristics of turbidite currents induced by earthquakes and tsunamis by inverse analysis of turbidites using a deep learning neural network (DNN). First, we validated the method with 1-D and 2-D models by both flume and numerical experiments. Next, data were collected through field surveys in the Boso Peninsula and the Japan Trench, and inverse analyses were conducted. The results showed that past turbidity currents had overwhelmingly larger sediment discharge than those measured in present-day. Thus, the possibility that turbidites in geologic records are consequences resulting from large-scale events was increased, suggesting that turbidites in the Japan Trench may indicate past mega-earthquakes.

Academic Significance and Societal Importance of the Research Achievements

本研究は、悲惨な地質災害の防災・減災へ向けて、まったく新しい手段を創造した。例えば、タービダイトからその起源となった巨大津波の規模推定を行い,その解析結果を津波対策構造物の設計に役立てることも可能である.学術的な観点から見ると、本研究の手法が汎用性を持っていることが重要である。地質学は本質的には復元の科学であり、多くの場面で逆解析が必要となる.本研究がイベント堆積物の逆解析手法を確立したことにより、例えば層序断面から海水準変動を復元するシーケンス層序学など,さまざまな分野への波及効果が期待できる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (43 results)

All 2024 2023 2022 2021 2020

All Journal Article (24 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 24 results,  Open Access: 8 results) Presentation (18 results) (of which Int'l Joint Research: 11 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] Cretaceous to early Paleogene sediment provenance transition from continental to magmatic arc systems in the Northwestern Pacific Region2024

    • Author(s)
      Harisma Harisma、Niki Sota、Hirata Takafumi、Naruse Hajime
    • Journal Title

      Scientific Reports

      Volume: 14 Issue: 1 Pages: 7280-7280

    • DOI

      10.1038/s41598-024-55471-1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Understanding flow characteristics from tsunami deposits at Odaka, Joban Coast, using a deep neural network (DNN) inverse model2024

    • Author(s)
      Mitra Rimali、Naruse Hajime、Abe Tomoya
    • Journal Title

      Natural Hazards and Earth System Sciences

      Volume: 24 Issue: 2 Pages: 429-444

    • DOI

      10.5194/nhess-24-429-2024

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Abundance of trace fossil Phycosiphon incertum in core sections measured using a convolutional neural network2024

    • Author(s)
      Kikuchi Kazuki、Naruse Hajime
    • Journal Title

      Sedimentary Geology

      Volume: 461 Pages: 106570-106570

    • DOI

      10.1016/j.sedgeo.2023.106570

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Understanding sedimentation, erosion, and geomorphological development of alluvial rivers through model experiments2023

    • Author(s)
      Naruse Hajime
    • Journal Title

      The Journal of the Geological Society of Japan

      Volume: 129 Issue: 1 Pages: 441-452

    • DOI

      10.5575/geosoc.2023.0012

    • ISSN
      0016-7630, 1349-9963
    • Year and Date
      2023-08-09
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Flume experiments in the development of crevasse-splay deposits: transition from asymmetric to symmetric geometry2023

    • Author(s)
      Kato Taichi、Yamada Masaki、Naruse Hajime、Sakai Yuichi
    • Journal Title

      Journal of Sedimentary Research

      Volume: 93 Issue: 11 Pages: 825-839

    • DOI

      10.2110/jsr.2023.029

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Linear-stability analysis of plane beds under flows with suspended loads2023

    • Author(s)
      Ohata Koji、Naruse Hajime、Izumi Norihiro
    • Journal Title

      Earth Surface Dynamics

      Volume: 11 Issue: 5 Pages: 961-977

    • DOI

      10.5194/esurf-11-961-2023

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Features of crevasse splay deposits and sedimentary processes associated with levee breaching due to the October 2019 flood of the Chikuma River, Central Japan2023

    • Author(s)
      Yamada Masaki、Naruse Hajime、Kuroda Yugo、Kato Taichi、Matsuda Yuhei、Shinozaki Tetsuya、Tokiwa Tetsuya
    • Journal Title

      Natural Hazards

      Volume: 119 Issue: 1 Pages: 95-124

    • DOI

      10.1007/s11069-023-06122-7

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Conditions of submarine leveed channel inception: Examination by flume experiments2023

    • Author(s)
      Poppeschi Justine、Nakata Kazushi、Naruse Hajime
    • Journal Title

      Sedimentology

      Volume: 70 Issue: 7 Pages: 2175-2195

    • DOI

      10.1111/sed.13117

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Inadequacy of fluvial energetics for describing gravity current autosuspension2023

    • Author(s)
      Fukuda Sojiro、de Vet Marijke G. W.、Skevington Edward W. G.、Bastianon Elena、Fern?ndez Roberto、Wu Xuxu、McCaffrey William D.、Naruse Hajime、Parsons Daniel R.、Dorrell Robert M.
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1

    • DOI

      10.1038/s41467-023-37724-1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multiple scours and upward fining caused by hydraulic jumps: implications for the recognition of cyclic steps in the deepwater stratigraphic record2023

    • Author(s)
      Ono Kenya、Naruse Hajime、Yao Qifeng、Cai Zhirong、Fukuda Sojiro、Yokokawa Miwa
    • Journal Title

      Journal of Sedimentary Research

      Volume: 93 Issue: 4 Pages: 243-255

    • DOI

      10.2110/jsr.2021.142

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Application of mineralogy and geochemistry to identify the landward extent of paleo-tsunami deposits not visible to the naked eye in the coastal wetland of Erimo, Hokkaido, Japan2023

    • Author(s)
      Nakanishi Ryo、Ashi Juichiro、Aizawa Masataka、Naruse Hajime
    • Journal Title

      Sedimentary Geology

      Volume: 447 Pages: 106365-106365

    • DOI

      10.1016/j.sedgeo.2023.106365

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Density stratification controls the bedform phase diagram of saline‐gravity currents versus open‐channel flows2023

    • Author(s)
      Koji Ohata, Isabel de Cala, Robert M. Dorrell, Hajime Naruse, Stuart J. McLelland, Stephen M. Simmons, William D. McCaffrey
    • Journal Title

      Sedimentology

      Volume: - Issue: 4 Pages: 1-27

    • DOI

      10.1111/sed.13075

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Upper and lower plane bed definitions revised2022

    • Author(s)
      Koji Ohata, Hajime Naruse, Norihiro Izumi
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 9 Issue: 1 Pages: 23-35

    • DOI

      10.1186/s40645-022-00481-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Origin of the Paleo-Kuril Arc, NE Japan: Sediment Provenance Change and Its Implications for Plate Configuration in the NW Pacific Region Since the Late Cretaceous2022

    • Author(s)
      H. Harisma, H. Naruse, H. Asanuma, T. Hirata
    • Journal Title

      Tectonics

      Volume: 41 Issue: 12

    • DOI

      10.1029/2022tc007299

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Morphological Function of Trace Fossil Paleodictyon: an Approach from Fluid Simulation2022

    • Author(s)
      Kikuchi Kazuki、Naruse Hajime
    • Journal Title

      Paleontological Research

      Volume: 26 Issue: 4 Pages: 378-389

    • DOI

      10.2517/pr210001

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-resolution upper Maastrichtian carbon isotope stratigraphy of terrestrial organic matter from northern Japan2022

    • Author(s)
      Nifuku, K., Naruse, H., & Ikehara, M.
    • Journal Title

      Newsletters on Stratigraphy

      Volume: 55 Issue: 2 Pages: 137-157

    • DOI

      10.1127/nos/2021/0652

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Inverse modeling of turbidity currents using an artificial neural network approach: verification for field application.2021

    • Author(s)
      Naruse, H., & Nakao, K.
    • Journal Title

      Earth Surface Dynamics

      Volume: 9 Issue: 5 Pages: 1091-1109

    • DOI

      10.5194/esurf-9-1091-2021

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inverse analysis of experimental scale turbidity currents using deep learning neural networks2021

    • Author(s)
      Cai, Z., & Naruse, H.
    • Journal Title

      Journal of Geophysical Research: Earth Surface

      Volume: 126 Issue: 8

    • DOI

      10.1029/2021jf006276

    • NAID

      120007192874

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reconstruction of flow conditions from 2004 Indian Ocean tsunami deposits at the Phra Thong island using a deep neural network inverse model2021

    • Author(s)
      Mitra Rimali、Naruse Hajime、Fujino Shigehiro
    • Journal Title

      Natural Hazards and Earth System Sciences

      Volume: 21 Issue: 5 Pages: 1667-1683

    • DOI

      10.5194/nhess-21-1667-2021

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reconstruction of flow conditions from 2004 Indian Ocean tsunamideposits at the Phra Thong island using a deep neural networkinverse model2021

    • Author(s)
      Mitra Rimali、Naruse Hajime、Fujino Shigehiro
    • Journal Title

      Natural Hazards and Earth System Sciences

      Volume: 0 Pages: 1-23

    • DOI

      10.5194/nhess-2020-373

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Shape difference of mud clasts depending on depositional facies: application of newly modified elliptic Fourier analysis to hybrid event beds2020

    • Author(s)
      Fukuda Sojiro、Naruse Hajime
    • Journal Title

      Journal of Sedimentary Research

      Volume: 90 Issue: 10 Pages: 1410-1435

    • DOI

      10.2110/jsr.2020.67

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Relating the Flow Processes and Bedforms of Steady-State and Waning Density Currents2020

    • Author(s)
      de Cala Isabel、Ohata Koji、Dorrell Robert、Naruse Hajime、Patacci Marco、Amy Lawrence A.、Simmons Steve、McLelland Stuart J.、McCaffrey William D.
    • Journal Title

      Frontiers in Earth Science

      Volume: 8 Pages: 535743-535743

    • DOI

      10.3389/feart.2020.535743

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Estimation of Tsunami Characteristics from Deposits: Inverse Modeling Using a Deep‐Learning Neural Network2020

    • Author(s)
      Mitra Rimali、Naruse Hajime、Abe Tomoya
    • Journal Title

      Journal of Geophysical Research: Earth Surface

      Volume: 125 Issue: 9

    • DOI

      10.1029/2020jf005583

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Bed-thickness frequency distributions and recurrence intervals of sediment-gravity-flow deposits intercalated in lacustrine varved diatomite: examples from the middle Pleistocene Hiruzenbara Formation, southwest Japan2020

    • Author(s)
      Sasaki Hana、Sasaki Yasunori、Saito-Kato Megumi、Naruse Hajime、Ishihara Yoshiro
    • Journal Title

      Journal of Sedimentary Research

      Volume: 90 Issue: 6 Pages: 561-572

    • DOI

      10.2110/jsr.2020.28

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] Reconstruction of paleohydraulic conditions of turbidity currents from geologic records considering uncertainties: inverse analysis of turbidites using Bayesian neurual network2023

    • Author(s)
      Hajime Naruse
    • Organizer
      AGU Fall Meeting 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 古第三紀における古千島弧での砕屑物供給源変化と海嶺沈み込み:砕屑性ジルコン年代分布のBayesian population correlation 解析2023

    • Author(s)
      成瀬 元,Buburanda Harisma,平田 岳史,仁木 創太
    • Organizer
      日本地質学会第130年学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 河川と混濁流のつくるクレバススプレイ堆積物の違い:数値実験による検討2023

    • Author(s)
      成瀬 元,山田 昌樹,酒井 祐一
    • Organizer
      日本地質学会第130年学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 機械学習の堆積学への応用:露頭とモデルをつなぐ2023

    • Author(s)
      成瀬 元
    • Organizer
      石油技術協会春季講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] クレバススプレイ地形の発達過程の実験的検討2023

    • Author(s)
      成瀬 元,山田 昌樹,加藤 汰一
    • Organizer
      日本地球惑星科学連合2023年大会
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 海底の土砂動態:浮遊砂輸送モデリングの課題2023

    • Author(s)
      成瀬 元
    • Organizer
      日本地球惑星科学連合2023年大会
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 生物攪拌が地質記録に与える影響の除去:格子オートマトン-逆畳み込み法2023

    • Author(s)
      成瀬 元
    • Organizer
      日本堆積学会2023年大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Filtering effect to the scale of turbidity currents in submarine canyons2022

    • Author(s)
      Hajime Naruse
    • Organizer
      AGU Fall meeting 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Uncertainty estimation of the flow conditions of particulate gravity currents reconstructed by deep neural network2022

    • Author(s)
      Hajime Naruse
    • Organizer
      Particulate Gravity Currents 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 重力流堆積物逆解析の不確実性の評価2022

    • Author(s)
      成瀬 元
    • Organizer
      日本地球惑星科学連合2022年大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 石垣島カラダギ洞窟に流入した先島津波の規模:3次元数値実験による検討2022

    • Author(s)
      成瀬 元・石原与四郎
    • Organizer
      日本堆積学会2022年大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Reconstruction of crustal uplift history in island arcs by inversion of river longitudinal profile: consideration of basement rock strength and sea-level change2021

    • Author(s)
      Hajime Naruse
    • Organizer
      AGU Fall Meeting 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 岩盤河川縦断形状に基づく日本列島隆起速度のベイズ推定2021

    • Author(s)
      成瀬 元
    • Organizer
      日本地質学会2021年大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 復元の科学としての堆積学2021

    • Author(s)
      成瀬 元
    • Organizer
      日本地球惑星科学連合2021年大会
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Grain size segregation on cyclic steps formed by turbidity currents2021

    • Author(s)
      Hajime Naruse
    • Organizer
      日本地球惑星科学連合2021年大会
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cyclic steps inside submarine canyon and in canyon-fan transition zone: Numerical experiments by 2D shallow-water model of turbidity currents2020

    • Author(s)
      Hajime Naruse
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Inverse Analysis of Experimental Scale Turbidity Currents by Deep Learning Neural Network2020

    • Author(s)
      Cai Zhirong and Hajime Naruse
    • Organizer
      JpGU-AGU Joint Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Morphological diversity of cyclic steps at submarine canyon-fan transition zone: A two dimensional numerical modeling approach2020

    • Author(s)
      Hajime Naruse
    • Organizer
      American Geophysical Union 2020 Fall Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Book] フィールドマニュアル 図説 堆積構造の世界2022

    • Author(s)
      日本堆積学会、伊藤 慎
    • Total Pages
      210
    • Publisher
      朝倉書店
    • ISBN
      9784254162790
    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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