Updated on 2024/09/06

写真a

 
KIKUCHI Kazuki
 
Organization
Faculty of Science and Engineering Research Associate
Contact information
The inquiry by e-mail is 《here
External link

Degree

  • 博士(理学) ( 千葉大学 )

  • 修士(理学) ( 千葉大学 )

Education

  • 2016.3
     

    Chiba University   doctor course   completed

  • 2013.3
     

    Chiba University   master course   completed

  • 2011.3
     

    Chiba University   others   graduated

Research History

  • 2023.4 - Now

    Chuo University   Faculty of Science and Engineering Department of Civil and Environmental Engineering   Assistant Professor

  • 2020.4 - 2023.3

    Kyoto University   Graduate School of Science Division of Earth and Planetary Science

  • 2016.4 - 2020.3

    Kyoto University   Graduate School of Science Division of Earth and Planetary Science

Professional Memberships

  • 2019.4 - Now

    The Sedimentological Society of Japan

  • 2016.6 - Now

    Paleontological Society of Japan

  • 2016.5 - Now

    Japan Geoscience Union

  • 2012.9 - Now

    The Geological Society of Japan

Research Interests

  • Ichnology

  • Sedimentology

Research Areas

  • Natural Science / Biogeosciences

Papers

  • Exceptionally well-preserved radiolarian fossils within Miocene trace fossils from the Amatsu Formation, Chiba, Japan Reviewed International journal

    Akihide Kikukawa, Yasuhide Nakamura, Kazuki Kikuchi, Noboru Furukawa, Yoshiaki Aita

    Lethaia   57 ( 3 )   1 - 20   2024.9

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Scandinavian University Press / Universitetsforlaget AS  

    DOI: 10.18261/let.57.3.3

    researchmap

  • Automatic facies classification using convolutional neural network for 3D outcrop data: Application to the outcrop of the mass-transport deposit Reviewed International journal

    Ryusei Sato, Kazuki Kikuchi, Hajime Naruse

    AAPG Bulletin   2024.6

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    researchmap

  • Two types of textures observed in parallel lamination of turbidite sandstones: microtextural analysis using CNN image segmentation technique Reviewed

    Akane Okuda, Kazuki Kikuchi, Sayo Ishii, Hajime Naruse

    Journal of the Sedimentological Society of Japan   82 ( 1-2 )   3 - 26   2024.2

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Sedimentological Society of Japan  

    DOI: 10.4096/jssj.82.3

    researchmap

  • Abundance of trace fossil Phycosiphon incertum in core sections measured using a convolutional neural network Reviewed International journal

    Kazuki Kikuchi, Hajime Naruse

    Sedimentary Geology   106570 - 106570   2024.1

     More details

    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.sedgeo.2023.106570

    researchmap

  • Morphological Function of Trace Fossil Paleodictyon: an Approach from Fluid Simulation Reviewed International journal

    Kazuki Kikuchi, Hajime Naruse

    Paleontological Research   26 ( 4 )   2022.8

     More details

    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:The Paleontological Society of Japan  

    DOI: 10.2517/pr210001

    researchmap

  • The occurrence of Paleodictyon in shallow-marine deposits of the Upper Cretaceous Mikasa Formation, Hokkaido Island, northern Japan: Implications for spatiotemporal variation of the Nereites ichnofacies Reviewed International journal

    Kazuki Kikuchi

    Palaeogeography, Palaeoclimatology, Palaeoecology   503   81 - 89   2018.8

     More details

    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.palaeo.2018.04.016

    researchmap

  • EVALUATION OF ICHNODIVERSITY BY IMAGE-RESAMPLING METHOD TO CORRECT OUTCROP EXPOSURE BIAS Reviewed International journal

    KAZUKI KIKUCHI, HAJIME NARUSE, NOBUHIRO KOTAKE

    PALAIOS   33 ( 5 )   204 - 217   2018.5

     More details

    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Society for Sedimentary Geology  

    DOI: 10.2110/palo.2017.090

    researchmap

  • First clear evidence that Archaeozostera is not an ancestor of Zosteracean sea-grass but a trace fossil Reviewed International journal

    Nobuhiro Kotake, Kazuki Kikuchi, Ken Ishiwata, Yasuyuki Tsujino, Ken-ichi Nakao, Noboru Furukawa

    Palaeogeography, Palaeoclimatology, Palaeoecology   454   12 - 19   2016.7

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.palaeo.2016.03.021

    researchmap

  • Mechanism and process of construction of tubes of the trace fossil Schaubcylindrichnus coronus Frey and Howard, 1981 Reviewed International journal

    Kazuki Kikuchi, Nobuhiro Kotake, Noboru Furukawa

    Palaeogeography, Palaeoclimatology, Palaeoecology   443   1 - 9   2016.2

     More details

    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.palaeo.2015.11.013

    researchmap

  • Geology and depositional environments of the Archaeozostera-bearing interval in the Bandodani Formation of the Upper Cretaceous Izumi Group of the Shimada-jima Island, northern part of Tokushima, southwest Japan. Reviewed

    Kazuki Kikuchi, Nobuhiro Kotake

    The Journal of the Geological Society of Japan   119 ( 9 )   613 - 629   2013.9

     More details

    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Geological Society of Japan  

    DOI: 10.5575/geosoc.2013.0023

    researchmap

▼display all

Awards

  • PSJ Best Article Award: for remarkable article(s) of the fiscal year published in the Paleontological Research

    2024   Palaeontological Society of Japan   Morphological function of trace fossil Paleodictyon: an approach from fluid simulation. Paleontological Research, vol. 26, pp. 378-389.

    Kazuki Kikuchi, Hajime Naruse

  • SSJ 2021 Best Presentation Award

    2021.11   The Sedimentological Society of Japan   Extraction of trace fossils from core images by semantic segmentation

    Kazuki Kikuchi, Hajime Naruse

  • SSJ 2019 Best Poster Award

    2019.4   The Sedimentological Society of Japan   Effect of outcrop exposure bias on bioturbation intensity

    Kazuki Kikuchi, Hajime Naruse

Research Projects

  • 白亜紀/古第三紀境界の大量絶滅に伴う深海底生動物群集の行動様式の進化過程の解明

    Grant number:20J01599  2020.4 - 2023.3

    日本学術振興会  科学研究費助成事業 特別研究員奨励費  特別研究員奨励費  京都大学

    菊地 一輝

      More details

    Authorship:Principal investigator 

    Grant amount: \4030000 ( Direct Cost: \3100000 、 Indirect Cost: \930000 )

    本年度は,始新統音無川層群の生痕化石群集の記載,および露頭画像から生痕化石の領域を自動抽出し,生物撹拌強度を推定する手法の構築,の2つのテーマに取り組んだ.昨年度の研究によって,白亜紀の海底扇状地堆積物の生痕化石群集は,分類群組成や生物撹拌強度の点で一般的な生痕化石相モデルと異なることが判明した.そこで,本年度は新生代の生痕化石群集の例として,紀伊半島南西部に分布する始新統音無川層群を対象とし,堆積環境を復元して生痕化石群集を記載した.調査地域には,音無川層群瓜谷層の最上部と羽六層の下部が露出する.堆積相の特徴から,瓜谷層は堆積盆底堆積物,羽六層は海底扇状地のフロンタルスプレイ下流部から分流チャネルを伴う上流部の堆積物と解釈された.瓜谷層からは体幅1 cm程度の堆積物食者による摂食痕が産出した.一方,羽六層の最下部からは体幅数mm程度の底生動物による多様な形態の摂食痕,居住痕からなる生痕化石群集が産出した.また,調査層準上部からは甲殻類の巣穴化石が多産し,生物撹拌強度も非常に高かった.この生痕化石相の違いは,堆積環境変化に伴う物理的撹乱の頻度の変化に対する底生動物群集の応答を反映した可能性がある.
    また,露頭画像からの生痕化石の自動抽出モデルを畳み込みニューラルネットワークを用いて構築し,生物撹拌強度の推定に援用する方法を提案した.教師および検証データには国際深海科学掘削計画により公開されているインド洋の中新世の海底扇状地堆積物のコア画像を用いた.自動抽出モデルとして畳み込み層を8層もつU-Netを作成した.このモデルにコア画像と手動で生痕化石を抽出した画像との関係を学習させたところ,未知のデータに対して約88%の精度で生痕化石を分類するモデルが生成された.今後,このモデルにより大量の生物撹拌強度のデータを収集可能になり,生物撹拌強度変動の一般的傾向の解明が期待される.

    researchmap