Tomofumi Kozono

Profile Information

Affiliation: Chief Researcher (Deputy Director-General, Center for Integrated Volcano Research), Volcano Disaster Resilience Research Division, National Research Institute for Earth Science and Disaster Resilience
: Commissioned Associate Professor, Tohoku University

Degree: （理学）(Mar, 2007, The University of Tokyo)

J-GLOBAL ID: 201401081367534530
researchmap Member ID: 7000009989

Research Interests

Research Areas

Natural sciences / Solid earth science / Volcanology

Research History

Jun, 2023 - Present

Deputy Director-General, Center for Integrated Volcano Research, National Research Institute for Earth Science and Disaster Resilience
Apr, 2022 - Present

Chief Researcher, Volcano Disaster Resilience Research Division, National Research Institute for Earth Science and Disaster Resilience
Apr, 2022 - Present

Commissioned Associate Professor, Graduate School of Science, Tohoku University
Jan, 2017 - Mar, 2022

Associate Professor, Graduate School of Science, Tohoku University
Nov, 2013 - Jan, 2017

Assistant Professor, Graduate School of Science, Tohoku University
Jul, 2013 - Nov, 2013

Senior Researcher, National Research Institute for Earth Science and Disaster Prevention
Feb, 2011 - Jul, 2013

Researcher, National Research Institute for Earth Science and Disaster Prevention
Apr, 2009 - Feb, 2011

Research Fellow, National Research Institute for Earth Science and Disaster Prevention
Apr, 2008 - Mar, 2009

Project Researcher, Earthquake Research Institute, The University of Tokyo
Apr, 2007 - Mar, 2008

Project Researcher, Earthquake Research Institute, The University of Tokyo
Apr, 2004 - Mar, 2007

Research Fellow of the Japan Society for the Promotion of Science (DC1), The University of Tokyo

Education

Apr, 2002 - Mar, 2007

Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo
Apr, 1998 - Mar, 2002

Department of Earth and Planetary Science, Faculty of Science, Kyushu University

Committee Memberships

Awards

Papers

Volcanic tremor associated with successive gas emission activity at a boiling pool: Analyses of seismic array and visible image data recorded at Iwo-Yama in Kirishima Volcanic complex, Japan

Masato Hata, Takeshi Nishimura, Takeshi Matsushima, Tomofumi Kozono, Tsutomu Nagatsuma, Ken T. Murata, Kazutaka Kikuta, Dan Muramatsu, Hisashi Nakahara

Journal of Volcanology and Geothermal Research, 455 108212-108212, Nov, 2024 Peer-reviewed
Vulcanian eruptions at Sakurajima Volcano: geophysical data, numerical modelling, and petrological evidence

Takeshi Nishimura, Tomofumi Kozono, Akiko Matsumoto, Mitsuhiro Nakagawa, Masato Iguchi

Bulletin of Volcanology, 86(4) 27, Mar 4, 2024 Peer-reviewed
Constraints on magma storage conditions based on geodetic volume change and erupted magma volume and application to the 2011 and 2018 eruptions at Kirishima Shinmoe-dake volcano, Japan

Tomofumi Kozono, Takehiro Koyaguchi, Hideki Ueda, Taku Ozawa, Tadashi Yamasaki

Earth, Planets and Space, 75(1) 100, Jun 20, 2023 Peer-reviewedLead authorCorresponding author
Constraints on magma properties at fragmentation during the 2011 sub‐Plinian eruptions of Kirishima Shinmoe‐dake volcano, Japan

Tomofumi Kozono, Satoshi Okumura

Journal of Geophysical Research: Solid Earth, 127(12) e2022JB025183, Nov 22, 2022 Peer-reviewedLead authorCorresponding author
Conduit Flow Dynamics During the 1986 Sub-Plinian Eruption at Izu-Oshima Volcano

Tomofumi Kozono, Hidemi Ishibashi, Satoshi Okumura, Takahiro Miwa

Journal of Disaster Research, 17(5) 754-767, Aug 1, 2022 Peer-reviewedLead authorCorresponding author
Fundamentals of Conduit Flow Modeling

T. Kozono

66(3) 135-146, Sep, 2021 Peer-reviewedLead authorCorresponding author
The dynamics of dual-magma-chamber system during volcanic eruptions inferred from physical modeling

T. Kozono

Earth, Planets and Space, 73(1) 103, May, 2021 Peer-reviewedLead authorCorresponding author
Urgent Joint Seismic Observation Data of the 2016 Kumamoto Earthquakes

Azusa SHITO, Ayaho MITSUOKA, Satoshi MATSUMOTO, Takeshi MATSUSHIMA, Koki AIZAWA, Hiroshi SHIMIZU, Kazunari UCHIDA, Megumi KAMIZONO, Yoshiko TEGURI, Manami NAKAMOTO …

Zisin (Journal of the Seismological Society of Japan. 2nd ser.), 73 149-157, Oct 27, 2020 Peer-reviewed
Characteristics of tephra fall from eruptions at Sakurajima volcano, revealed by optical disdrometer measurements

T. Kozono, M. Iguchi, T. Miwa, M. Maki, T. Maesaka, D. Miki

Bulletin of Volcanology, 81(7) 41, Jul, 2019 Peer-reviewedLead authorCorresponding author
Numerical assessment of the potential for future limnic eruptions at lakes Nyos and Monoun, Cameroon, based on regular monitoring data

T. Kozono., M. Kusakabe, Y. Yoshida, R. Ntchantcho, T. Ohba, G. Tanyileke, J. V. Hell

Geological Society, London, Special Publication, 437(1) 163-175, Jul, 2017 Peer-reviewedLead authorCorresponding author
High-resolution modeling of atmospheric dispersion of dense gas using TWODEE-2.1: application to the 1986 Lake Nyos limnic eruption

A. Folch, J. Barcons, T. Kozono, A. Costa

Natural Hazards and Earth System Science, 17 861-879, Jun 13, 2017 Peer-reviewed
Silicic lava effusion controlled by the transition from viscous magma flow to friction controlled flow

S. Okumura, T. Kozono

Geophysical Research Letters, 44(8) 3608-3614, Apr, 2017 Peer-reviewed
From Magma Chamber to Eruption Cloud: Observations and Mathematical Model

Tomofumi KOZONO

Bulletin of the Volcanological Society of Japan, 61(2) 295-310, Sep 12, 2016 Peer-reviewedInvitedLead authorCorresponding author
Preliminary Results of Weather Radar Observations of Sakurajima Volcanic Smoke

M. Maki, M. Iguchi, T. Maesaka, T. Miwa, T. Tanada, T. Kozono, T. Momotani, A. Yamaji, I. Kakimoto

Journal of Disaster Research, 11(1) 15-30, Feb 1, 2016 Peer-reviewed
パーシベルを用いた桜島産火山噴出物の落下速度に関する実験的測定

三輪学央, 真木雅之, 小園誠史, 藤田英輔, 棚田俊收, 井口正人

京都大学防災研究所年報, 58B(58) 91-94, Jun, 2015
気象レーダによる桜島火山噴煙の観測

真木雅之, 井口正人, 藤田英輔, 三輪学央, 前坂剛, 出世ゆかり, 小園誠史, 桃谷哲也, 山路昭彦

京都大学防災研究所年報, 58B 76-85, Jun, 2015
桜島火山におけるパーシベルによる降下火山灰の観測

小園誠史, 三輪学央, 眞木雅之, 前坂剛, 味喜大介, 井口正人

京都大学防災研究所年報, 58B 86-90, Jun, 2015 Lead authorCorresponding author
Correlation between magma chamber deflation and eruption cloud height during the 2011 Shinmoe-dake eruptions

T. Kozono, H. Ueda, T. Shimbori, K. Fukui

Earth, Planets and Space, 66 139, Oct, 2014 Peer-reviewedLead authorCorresponding author
Long-term lava extrusion after the 2011 Shinmoe-dake eruption detected by DInSAR observations

Y. Miyagi, T. Ozawa, T. Kozono, M. Shimada

Geophysical Research Letters, 41(16) 5855-5860, Aug, 2014 Peer-reviewed
Quasi-static stress change around Mount Fuji region due to Tohoku mega-thrust earthquake

E. Fujita, T. Kozono, N. Toda, A. Kikuchi, Y. Ida

Journal of Disaster Research, 9(3) 365-372, Jun, 2014 Peer-reviewed

Presentations

149

Magma pressurization in conduit before Vulcanian eruptions at Sakurajima volcano inferred from conduit flow modeling

T. Kozono, T. Nishimura, A. Matsumoto, M. Nakagawa, M. Iguchi, T. Miwa

Cities on Volcanoes 12, Feb 15, 2024
Magma plumbing system of Ioto volcano, Ogasawara, Japan: A petrological constraint

T. Miwa, M. Nagai, H. Ueda, T. Kozono, S. Nakada, A. Yasuda

Cities on Volcanoes 12, Feb 13, 2024
Relationship between lava length and lava volume

T. Maruishi, T. Kozono, E. Fujita

Cities on Volcanoes 12, Feb 12, 2024
Small seismic array analysis of gas emission activity at Kirishima Iwo-Yama volcano

M. Hata, T. Nishimura, T. Matsushima, D. Muramatsu, T. Nagatsuma, K. T. Murata, T. Kozono, H. Tanabe

VSJ Fall Meeting 2023, Oct 20, 2023
Constraints on magma dynamics during the 1914 Sakurajima Plinian eruption based on volcanic plume and conduit flow modeling

T. Tsuchiya, T. Kozono, S. Okumura

VSJ Fall Meeting 2023, Oct 19, 2023
Correlation between lava volume and lava length

T. Maruishi, T. Kozono, E. Fujita

VSJ Fall Meeting 2023, Oct 19, 2023
P-T condition of magma from the 2022 eruption at Ioto volcano, Ogasawara, Japan

T. Miwa, M. Nagai, H. Ueda, T. Kozono, S. Nakada, A. Yasuda

VSJ Fall Meeting 2023, Oct 18, 2023
Analyses of volcanic explosion earthquakes at Sakurajima using DAS and a small seismic array

T. Nishimuta, K. Taguchi, H. Nakahara, M. Hata, H. Nakamichi, R. Takahashi, K. Emoto, S. Hamanaka, T. Kozono, T. Nagatsuma, K. T. Murata, K, Kikuta

VSJ Fall Meeting 2023, Oct 18, 2023
Estimation of temporal changes in seismic velocities using double-beamforming of seismic ambient noise cross-correlation functions: Application to the NIED Sakurajima array

T. Hirose, E. Fujita, H. Ueda, T. Kozono

VSJ Fall Meeting 2023, Oct 18, 2023
Magma pressurization in conduit prior to Vulcanian eruptions at Sakurajima volcano inferred from conduit flow modeling

T. Kozono, T. Nishimura, A. Matsumoto, M. Nakagawa, M. Iguchi, T. Miwa

VSJ Fall Meeting 2023, Oct 18, 2023
Total mass estimation of tephra based on disdrometer observations

K. Takishita, T. Kozono, T. Miwa, M. Iguchi

VSJ Fall Meeting 2023, Oct 18, 2023
Activity of Asian Consortium of Volcanology (ACV)

E. FUJITA, B. TAISNE, S. JENKINS, C. WIDIWIJAYANTI, Ma. A. BORNAS, H. GUNAWAN, O. PRAMBADA, J. XU, C-H. LIN, Y-C. LAI, W. LI, S-H. YUN, C. CHANG, T. KOZONO, T. MIWA, M. IGUCHI

AOGS2023, Aug 4, 2023
Constraints on Magma Storage Conditions Based on Geodetic Volume Change and Erupted Magma Volume and Application to the 2011 and 2018 Eruptions at Kirishima Shinmoe-dake Volcano, Japan

T. Kozono, T. Koyaguchi, H. Ueda, T. Ozawa, T. Yamasaki

AOGS2023, Aug 4, 2023
Eruption activities from 2012 to 2022 on Ioto (Iwojima) Volcano, Izu-Bonin arc

M. Nagai, T. Miwa, H. Ueda, S. Nakada, T. Kobayashi, T. Ozawa, T. Tanada, T. Hirose, T. Kozono

JpGU2023, May 24, 2023
Water content in phreatic jet at Ioto volcano: Integration of geological and geophysical approaches

T. Miwa, A. K. Kurokawa, M. Nagai, T. Kozono, H. Ueda, T. Tanada

JpGU2023, May 24, 2023
Small seismic array and continuous video observation of gas emission activity at Iwo-yama Volcano, Kirishimayama

M. Hata, T. Nishimura, T. Matsushima, D. Muramatsu, T. Nagatsuma, K. T. Murata, T. Kozono, H. Tanabe

JpGU2023, May 23, 2023
Constraints on magma chamber-volcanic conduit system during the 1986 lava flow eruption of Izu-Oshima volcano

T. Kozono

JpGU2023, May 23, 2023
Towards the final results: Integrated Program for Next Generation Volcano Research and Human Resource Development (INeVRH)

E. Fujita, T. Kozono, H. Ueda, S. Nakada

JpGU2023, May 23, 2023
火山研究成果の火山防災対策への活用についてー海外事例の紹介ー

小園誠史

次世代火山研究・人材育成総合フォーラム, Feb 17, 2023 Invited
Lava flow drill map: Spatial resolution and the application to volcanic hazard mitigation

E. Fujita, H.A.Shimizu, T.Kozono, H. Nakamichi

IAVCEI Scientific Assembly 2023, Jan 30, 2023

Teaching Experience

Professional Memberships

Research Projects

爆発的火山噴火を引き起こすマグマの破壊現象の解明：変形するマグマの時分割構造解析

科学研究費助成事業基盤研究(A), 基盤研究(A), 日本学術振興会, Apr, 2022 - Mar, 2026

奥村聡, 坂巻竜也, 小園誠史, 上杉健太朗
超高密度多点地震観測と高精度映像分析による爆発的噴火ダイナミクスの解明

科学研究費助成事業基盤研究(B), 基盤研究(B), 日本学術振興会, Apr, 2022 - Mar, 2025

西村太志, 中原恒, 田口貴美子, 中道治久, 村田健史, 長妻努, 小園誠史, 江本賢太郎
A numerical study of conduit flow: Origin of diverse eruption styles by island-arc basaltic magma

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, Apr, 2019 - Mar, 2023
Magma fragmentation mechanism inducing explosive volcanic eruptions and a predicition model for volcanic eruptions

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2018 - Mar, 2022

Okumura Satoshi
Development of near-real time volcanology based on in-situ observation experiments of shallow magmatic processes

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (S), Grant-in-Aid for Scientific Research (S), Japan Society for the Promotion of Science, May, 2016 - Mar, 2021
Initiation and eruption style of silicic volcanism: Roles of outgassing and rheology of crystal- and bubble-bearing magmas

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2015 - Mar, 2018

Okumura Satoshi
A numerical modeling of conduit flow and crustal deformation during transition from effusive to explosive eruptions

Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Japan Society for the Promotion of Science, Apr, 2015 - Mar, 2018

Kozono Tomofumi
高温変形実験による浅所貫入マグマ物性の研究

科学研究費助成事業基盤研究(A), 基盤研究(A), 日本学術振興会, Apr, 2016 - Mar, 2017

中村美千彦, 奥村聡, 三宅亮, 下司信夫, 小園誠史
Development of a tephra-dispersal model using 3-dimensional eruption column model and radar observations

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Japan Society for the Promotion of Science, Apr, 2012 - Mar, 2017

Koyaguchi Takehiro
カメルーン火口湖ガス災害防止の総合対策と人材育成

国際的な科学技術共同研究などの推進 SATREPS, 科学技術振興機構, 2010 - 2015

大場武
A database construction of volcanic eruption parameters combined with a numerical modeling of conduit flow dynamics

Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), Japan Society for the Promotion of Science, 2009 - 2011

KOZONO Tomofumi
Modeling of volcanic eruption to simulate satellite data of eruption clouds and petrological data of ejecta

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, 2006 - 2008

KOYAGUCHI Takehiro, KOZONO Tomofumi, SUZUKI Yujiro, NAKANISHI Muga
噴火タイプの多様性に関する火道流の数値的研究

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, 日本学術振興会, 2004 - 2006

小園誠史

Social Activities

ぶらりがく for ハイスクール

Lecturer

東北大学理学研究科, Aug 11, 2019 - Aug 11, 2019
火山学勉強会における講演

Other

Aug 31, 2016

Other

次世代火山研究・人材育成総合プロジェクト

「火山研究人材育成コンソーシアム構築事業」「火山噴火の予測技術の開発」

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