OKUWAKI Ryo

Affiliation

Institute of Life and Environmental Sciences

Official title

Associate Professor

ORCID

Email

Research fields


Solid earth and planetary physics

Research keywords


Geophysics
Seismology

Research projects


What rocks the Earth? Unearthing non-earthquake sources from noise	2024-04 -- 2028-03	Ryo OKUWAKI	Japan Society for the Promotion of Science/Grants-in-Aid for Scientific Research(B)	12,870,000Yen
Exploring slow-to-fast earthquake transition phenomena using a data-driven strategy	2024-04 -- 2026-03	Ryo OKUWAKI	Japan Society for the Promotion of Science/Grant-in-Aid for Transformative Research Areas(A)	4,030,000Yen
余効変動の把握と予測に向けた地殻変動データ解析と粘弾性データ同化システムの構築	2021-04 -- 2025-03	加納将行	Japan Society of for the Promotion of Science/Grant-in-Aid for Scientific Research(C)	4,160,000Yen
Unraveling unconventional seismic sources using dense seismic arrays	2020-04 -- 2024-03	Ryo OKUWAKI	Japan Society of for the Promotion of Science/Grant-in-Aid for Early-Career Scientists	3,770,000Yen
Rupture evolution during the mega and large earthquakes resolved by multi-scale source analyses	2019-04 -- 2022-03	Ryo OKUWAKI	Japan Society of for the Promotion of Science/Grant-in-Aid for JSPS Fellows	4,420,000Yen
Irregular rupture evolution during the large/great earthquakes: resolved by high-frequency radiation sources and co-seismic slip	2016-04 -- 2019-03	Ryo OKUWAKI	Japan Society of for the Promotion of Science/Grant-in-Aid for JSPS Fellows	2,500,000Yen

Career history


2025-08 -- (current)	University of TsukubaInstitute of Life and Environmental SciencesAssociate Professor
2019-06 -- 2025-07	University of TsukubaFaculty of Life and Environmental SciencesAssistant Professor
2022-11 -- 2022-12	Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, UC San Diego,Visiting Scholar
2020-03 -- 2022-03	University of Leeds,School of Earth and Environment,Visting Professor
2019-09 -- 2019-12	Florida State University,Department of Earth, Ocean & Atmospheric Science,Visting Scholar
2019-04 -- 2019-06	Japan Society for the Promotion of Science　National Institute of Advanced Industrial Science and Technology　Research Fellow PD
2016-04 -- 2019-03	Japan Society for the Promotion of Science　University of Tsukuba　Research Fellow DC1

Degree


2019-03-25	Doctor of Philosophy in Science	University of Tsukuba
2016-03-25	Master of Science	University of Tsukuba
2014-03-25	Bachelor of Science	University of Tsukuba

Honors & Awards


2023-05	Young Scientist Award of the Seismological Society of Japan
2022-11-08	2022 Young Faculty Award
2022-04-25	AGU 2021 Editors' Citation for Excellence in Refereeing - JGR-Solid Earth
2021-01-28	EPS Excellent Reviewers 2020
2019-03-25	President Prize
2018-05-25	JpGU Meeting 2018 Outstanding Student Presentation Award
2018-04-01	Outstanding Reviewer, Earth and Planetary Science Letters
2017-05-31	JpGU-AGU Joint Meeting 2017 Outstanding Student Presentation Award
2015-01-21	Outstanding Student Presentation Awards

Articles

Fast Reports of the 2025 Mw 7.8 Mandalay, Myanmar Earthquake: unraveling the rupture characteristics
Thingbaijam K. K. S.; OKUWAKI Ryo; Hobbs T. E.
Seismica/4(2)/pp.1-2, 2025-10
Intraslab stress heterogeneity and continental mantle faulting revealed by the 2006 Pingtung offshore earthquake doublet
HU Wan-Lin; TAN Eh; OKUWAKI Ryo; YAGI Yuji
COMMUNICATIONS EARTH & ENVIRONMENT/6(1), 2025-08
A multiple asymmetric bilateral rupture sequence derived from the peculiar tele-seismic P-waves of the 2025 Mandalay, Myanmar earthquake
Inoue Naohiro; Ryo Yamaguchi; Yuji Yagi; Ryo Okuwaki; ...
Seismica/4(1), 2025-05
The complex rupture evolution of the long and slow, tsunamigenic 2021 South Sandwich Islands earthquake
Yamaguchi Ryo; Yagi Yuji; Okuwaki Ryo; Enescu Bogdan
Scientific Reports/15(1), 2025-05
A Multiplex Rupture Sequence Under Complex Fault Network Due To Preceding Earthquake Swarms During the 2024 Mw 7.5 Noto Peninsula, Japan, Earthquake
Okuwaki Ryo; Yagi Yuji; Murakami Asuka; Fukahata Yuki...
Geophysical Research Letters/51(11)/p.e2024GL109224, 2024-06
Barrier‐Induced Rupture Front Disturbances during the 2023 Morocco Earthquake
Yagi Yuji; Okuwaki Ryo; Hirano Shiro; Enescu Bogdan; ...
Seismological Research Letters/95(3)/pp.1591-1598, 2024-01
Complex rupture evolution of the 2007 Martinique earthquake: a non-double-couple event in the Caribbean Sea
Ohara Kenta; Yagi Yuji; Okuwaki Ryo
GEOPHYSICAL JOURNAL INTERNATIONAL/236(3)/pp.1743-1752, 2024-03
2023年トルコ・シリア双子地震の破壊過程
奥脇亮; 八木勇治
日本地震工学会誌/50/pp.2-6, 2023-11
Complex evolution of the 2016 Kaikoura earthquake revealed by teleseismic body waves
Ohara Kenta; Yagi Yuji; Yamashita Shinji; Okuwaki Ryo...
PROGRESS IN EARTH AND PLANETARY SCIENCE/10(35)/pp.1-12, 2023-07
Multi-scale rupture growth with alternating directions in a complex fault network during the 2023 south-eastern Türkiye and Syria earthquake doublet
Okuwaki Ryo; Yagi Yuji; Taymaz Tuncay; Hicks Stephen P.
GEOPHYSICAL RESEARCH LETTERS/50(12)/p.e2023GL103480, 2023-06
Irregular rupture process of the 2022 Taitung, Taiwan, earthquake sequence
Yagi Yuji; Okuwaki Ryo; Enescu Bogdan; Lu Junjie
SCIENTIFIC REPORTS/13(1), 2023-01
Earthquake cycle deformation associated with the 2021 Mw 7.4 Maduo (eastern Tibet) earthquake: An intrablock rupture event on a slow-slipping fault from Sentinel-1 InSAR and teleseismic data
Fang Jin; Ou Qi; Wright Tim J.; Okuwaki Ryo; Amey Ru...
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH/127(11), 2022-11
The launch of Seismica: a seismic shift in publishing
Christie Rowe; Matthew Agius; Jaime Convers; Gareth Funn...
Seismica/1(1), 2022-11
Chasing supershear earthquakes
Okuwaki Ryo
NATURE GEOSCIENCE/15(11)/pp.863-864, 2022-10
Complex rupture process on the conjugate fault system of the 2014 Mw 6.2 Thailand earthquake
Tadapansawut Tira; Yagi Yuji; Okuwaki Ryo; Yamashita Shi...
Progress in Earth and Planetary Science/9(1), 2022-05
Potency density tensor inversion of complex body waveforms with time-adaptive smoothing constraint
Yamashita Shinji; Yagi Yuji; Okuwaki Ryo; Shimizu Kousuk...
Geophysical Journal International/231(1)/pp.91-107, 2022-05
Irregular rupture propagation and geometric fault complexities during the 2010 Mw 7.2 El Mayor-Cucapah earthquake
Yamashita Shinji; Yagi Yuji; Okuwaki Ryo
Scientific Reports/12(1), 2022-03
Very low frequency earthquakes in between the seismogenic and tremor zones in Cascadia?
Fan Wenyuan; Barbour Andrew J.; McGuire Jeffrey J.; Huang...
AGU Advances/3(2), 2022-03
Fast rupture of the 2009 Mw 6.9 Canal de Ballenas earthquake in the Gulf of California dynamically triggers seismicity in California
Fan Wenyuan; Okuwaki Ryo; Barbour Andrew J.; Huang Yihe; ...
Geophysical Journal International/230(1)/pp.528-541, 2022-02
Oblique convergence causes both thrust and strike-slip ruptures during the 2021 M 7.2 Haiti earthquake
Okuwaki Ryo; Fan Wenyuan
Geophysical Research Letters/49(2), 2022-01
Illuminating a Contorted Slab With a Complex Intraslab Rupture Evolution During the 2021 Mw 7.3 East Cape, New Zealand Earthquake
Okuwaki Ryo; Hicks Stephen P.; Craig Timothy J.; Fan Wen...
Geophysical Research Letters/48(24), 2021-12
Back-propagating rupture evolution within a curved slab during the 2019 Mw 8.0 Peru intraslab earthquake
Hu Yaping; Yagi Yuji; Okuwaki Ryo; Shimizu Kousuke
Geophysical Journal International/227(3)/pp.1602-1611, 2021-08
Long Tsunami Oscillations Following the 30 October 2020 Mw 7.0 Aegean Sea Earthquake: Observations and Modelling
Heidarzadeh Mohammad; Pranantyo Ignatius Ryan; Okuwaki R...
Pure and Applied Geophysics/178/pp.1531-1548, 2021-05
Identifying landslides from continuous seismic surface waves: a case study of multiple small-scale landslides triggered by Typhoon Talas, 2011
Okuwaki Ryo; Fan Wenyuan; Yamada Masumi; Osawa Hikaru; Wr...
Geophysical Journal International/226(2)/pp.729-741, 2021-04
Consecutive ruptures on a complex conjugate fault system during the 2018 Gulf of Alaska earthquake
Yamashita Shinji; Yagi Yuji; Okuwaki Ryo; Shimizu Kousuk...
Scientific Reports/11, 2021-03
more...

Conference, etc.

Considering a Proxy of source process complexities based on temporal change of focal mechanisms
INOUE Naohiro; YAGI Yuji; OKUWAKI Ryo; YAMAGUCHI Ryo
International Joint Workshop on Slow-to-Fast Earthquakes 2025/2025-09-24--2025-09-26
The slow rupture process during the 2021 Mw 8.5 South Sandwich Islands earthquake
YAMAGUCHI Ryo; YAGI Yuji; OKUWAKI Ryo; ENESCU Bogdan
International Joint Workshop on Slow-to-Fast Earthquakes 2025/2025-09-24--2025-09-26
Finding rupture hesitation in a complex rupture process
OKUWAKI Ryo; YAGI Yuji
International Joint Workshop on Slow-to-Fast Earthquakes 2025/2025-09-24--2025-09-26
滑り・グリーン関数・断層形状の同時推定の定式化と解の解析的表現
佐藤大祐; 八木勇治; 奥脇亮; 深畑幸俊
日本地球惑星科学連合2025年大会/2025-05-30
震源メカニズムの時間変化に着目した震源過程の複雑性を評価するプロキシの検討
井上尚滉; 八木勇治; 奥脇亮; 山口諒
日本地球惑星科学連合2025年大会/2025-05-29
The complex rupture process of the 2021 MW 8.5 South Sandwich Islands earthquake
山口諒; 八木勇治; 奥脇亮; Bogdan Enescu
日本地球惑星科学連合2025年大会/2025-05-29
平成5年北海道南西沖地震と令和6年能登半島地震の震源過程の階層クラスタリング
原嶋幸生; 八木勇治; 奥脇亮
日本地球惑星科学連合2025年大会/2025-05-28
AELUMA法を用いた2023年10月孀婦岩周辺で発生した震源の探索
青木泰智; 奥脇亮
日本地球惑星科学連合2025年大会/2025-05-25
複数の断層が連動した海洋プレート内横ずれ大地震の震源過程の特徴
井上尚滉; 八木勇治; 奥脇亮; 山口諒
日本地震学会秋季大会/2024-10-21--2024-10-23
破壊継続時間が長い地震における震源インバージョン手法の検討
山口諒; 八木勇治; 奥脇亮
日本地震学会秋季大会/2024-10-21--2024-10-23
2023年ロイヤリティ諸島南東部地震（MW 7.7）で発生した複雑な破壊過程
村上明叶; 八木勇治; 奥脇亮
日本地震学会秋季大会/2024-10-21--2024-10-23
Rupture Dynamics and Fault Characteristics of the Maidan Fault during the 2024 Mw 7.1 Wushi Earthquake in Xinjiang, China
高航宇; 八木勇治; 奥脇亮
日本地震学会秋季大会/2024-10-21--2024-10-23
フンガ・トンガ＝フンガ・ハアパイ火山における2022年噴火前・中・後のイベント検出と大規模噴火の運動学的モデリング
奥脇亮; Fan Wenyuan
日本地震学会2023年度秋季大会/2023-11-01
稠密な三つ組サブアレーを用いた超低周波地震の検出
奥脇亮; Fan Wenyuan; 松澤孝紀; 武村俊介
日本地震学会2023年度秋季大会/2023-11-01
2021年サウスサンドウィッチ諸島地震における複雑な震源過程
山口諒; 八木勇治; 奥脇亮
日本地震学会2023年度秋季大会/2023-11-01
高自由度な震源過程モデルによって明らかになった階層的な破壊成長
八木勇治; 奥脇亮
日本地震学会2023年度秋季大会/2023-11-01
2023年ロイヤリティ諸島南東部地震で発生した逆破壊伝播
村上明叶; 八木勇治; 奥脇亮
日本地震学会2023年度秋季大会/2023-10-31
高自由度な震源過程イメージングによる破壊成長の複雑性と断層形状の関係の究明
奥脇亮
日本地震学会2023年度秋季大会/2023-10-31
Accounting Epistemic Uncertainty in Earthquake Source Inversion: Investigating Complex Rupture Processes
Okuwaki Ryo
Envisioning the Future of Geophysics: A Celebration of the Centennial of the Seismological Laboratory, California Institute of Technology/2022-11-10--2022-11-11
Accounting Epistemic Uncertainty in Finite-fault Inversion; Illuminating Complex Earthquake Rupture Processes
Okuwaki Ryo
IGPP Seminar Series 2022/2022-11-15--2022-11-15
データ駆動型の震源過程解析手法：ポテンシー密度テンソルインバージョン
八木勇治; 清水宏亮; 山下真司; 奥脇亮; 縣亮一郎; 深畑幸俊; 縣亮一郎
日本地球惑星科学連合2022年大会/2022-05-22

Teaching


2025-09 -- 2025-09	Basic Field Works on Geology II	University of Tsukuba.
2025-04 -- 2025-07	Geodynamics, Experiment	University of Tsukuba.
2025-10 -- 2025-12	Advanced Studies in Geodynamics II	University of Tsukuba.
2025-04 -- 2025-07	Advanced Studies in Geodynamics I	University of Tsukuba.
2025-04 -- 2025-07	Geodynamics, Seminar	University of Tsukuba.
2025-04 -- 2025-06	Origin, Evolution, Dynamics and Resources of the Earth B	University of Tsukuba.
2025-10 -- 2026-02	Special Study in Earth Evolution Sciences IIb	University of Tsukuba.
2025-04 -- 2025-08	Special Study in Earth Evolution Sciences IIa	University of Tsukuba.
2025-10 -- 2026-02	Special Study in Earth Evolution Sciences Ib	University of Tsukuba.
2025-04 -- 2025-08	Special Study in Earth Evolution Sciences Ia	University of Tsukuba.
more...

Professional activities


2025-07 -- (current)	Japan Geoscience Union	固体地球科学セクションプログラム委員
2025-04 -- (current)	SEISMOLOGICAL SOCIETY OF JAPAN	査読付き学会誌「地震」編集委員
2023-04 -- 2024-03	SEISMOLOGICAL SOCIETY OF JAPAN	地震学夏の学校2023実行臨時委員会
2022-07 -- (current)	Seismica	Editorial Board member

University Management


2021-04 -- (current)	山岳科学センター運営委員会	委員
2022-04 -- (current)	MSC Annual Report Meeting Organizing Committee	Chair
2020-04 -- (current)	山岳科学センター広報委員会	委員長

Other activities


2022-07 -- (current)	Seismica - Editorial Board member

(Last updated: 2025-10-15)