KUBOTA Tatsuya

Earth Science / Geophysics / Solid Earth / Tectonophysics / Seismology / Subduction zone / Earthquake / Tsunami

[Shunsuke Takemura（武村俊介）🌏 @takeshun1984]

Kubota, T., & Saito, T. (2026). Does three-dimensional structure affect tsunami excitation and stress drop estimates?—The case of the 2011 Tohoku earthquake. Geophysical Research Letters, 53, e2026GL122518. https://t.co/I32ESI8hRp

[KUBOTA Tatsuya @kbttats]

New paper is published in GRL!
Does Three-Dimensional Structure Affect Tsunami Excitation and Stress Drop Estimates?—The Case of the 2011 Tohoku Earthquake
https://t.co/h28dV3ltbD

[KUBOTA Tatsuya @kbttats]

JpGU-AGU2026お疲れさまでした．
わたしの発表，初日の日曜の朝イチだったにもかかわらず多くの方に聴きに来て頂きました．大変恐縮です．ありがとうございました．

コンビーナしている海底地震学セッションも，トラブルもなく無事に終える事ができて良かったです．

[KUBOTA Tatsuya @kbttats]

#JpGUAGU2026 #JpGU2026
今年のJpGUの海底地震学セッションは本日初日の午前です。皆様のご参加をお待ちしています．
Today we have the session S-SS06 “Seismological advances in the ocean” in the morning. I look forward seeing you.
https://t.co/ztz3lRYAxB

[KUBOTA Tatsuya @kbttats]

#JpGUAGU2026 #JpGU2026
Thank you for coming the today’s session S-CG63 “Uncovering stress accumulation and fault strengthening of megathrust earthquakes”
https://t.co/mlrdBsNEBC

[KUBOTA Tatsuya @kbttats]

#JpGUAGU2026 #JpGU2026
今年のJpGUの海底地震学セッションは本日初日の午前です。皆様のご参加をお待ちしています．
Today we have the session S-SS06 “Seismological advances in the ocean” in the morning. I look forward seeing you.
https://t.co/ztz3lRYAxB

[KUBOTA Tatsuya @kbttats]

Topics 2026年4月20日 三陸沖の地震
https://t.co/eqfu6NfS2X

[防災科学技術研究所（防災科研） @C2010NIED]

地震津波火山観測研究センターの久保久彦主任研究員が令和8年度 科学技術分野の文部科学大臣表彰を受けました🎖️
https://t.co/RBlGahrOmf

[KUBOTA Tatsuya @kbttats]

If you are interested in ocean-bottom seismology and related studies, please consider submitting to Session S-SS06 "Seismological advances in the ocean" in JpGU-AGU2026.
https://t.co/ztz3lRYAxB
Early-bird abstract submission deadline is approaching (23:59 JST on 5 Feb).

[AGU (American Geophysical Union) @theAGU]

🇯🇵Abstracts Now Open for the JpGU-AGU Joint Meeting taking place 24-29 May in Chiba, Japan!🇯🇵

The third JpGU–AGU Joint Meeting will bring together scientists from around the world to exchange data, methods, and insights across the Earth and space sciences—from earthquakes and tsunamis to weather extremes and climate change.

🗓️Abstract deadline: 17 February, 17:00 JST
➡️ https://t.co/q4R6xTD6PZ

#JpGU #Science #Conference

[KUBOTA Tatsuya @kbttats]

Our new paper is now published!
https://t.co/b6yIQEumZf

We modeled an M 7.1 earthquake in Hyuganada Sea, Japan, on 8 August 2024 by a joint inversion of offshore tsunami and onshore geodetic data, and we discussed the interplate seismic coupling in this region.

[Shunsuke Takemura（武村俊介）🌏 @takeshun1984]

Our research paper on T waves during the tsunami event from Sofu Seamount received an editor’s highlight in
@AGU_Eos

T-waves May Improve Tsunami Early Warning Systems https://t.co/oPMWeChfCr

[KUBOTA Tatsuya @kbttats]

2025年1月13日日向灘の地震
https://t.co/pLVxTEoDxA

[Jxiv (JST preprint server) @Jxiv_jst]

2024年日向灘の地震に伴う津波の波源分布 －N-netとDONETの水圧計記録の解析から－
https://t.co/OgKCFdqZ8g

[KUBOTA Tatsuya @kbttats]

I posted a preprint on the tsunami modeling study of the earthquake beneath the Hyuganada Sea on 8 August 2024, available at https://t.co/Xcf8MXorTS (the texts are in Japanese but the abstract and figure captions are in English).

[Shunsuke Takemura（武村俊介）🌏 @takeshun1984]

先日でた論文の和文解説を書きました。

海中音波T波を用いて2023年10月鳥島近海（孀婦海山）の津波に迫る – 東京大学地震研究所 https://t.co/V9NEgtOrw2

[Shunsuke Takemura（武村俊介）🌏 @takeshun1984]

Our new paper on JGR

We investigated T waves from successive tsunamigenic events near Sofu Seamount. Our main conclusion is that accompanying seismic events during tsunamigenic events should be at depths ≤0.5 km below the seafloor
https://t.co/NEJR8Nxb9z

[西田究 / Kiwamu Nishida @qnishida]

Our new paper has been published! “Ocean Surface Gravity Waves Excited by the 2022 Eruption of Hunga Tonga‐Hunga Ha’apai Volcano, Nishida, Ichihara, Kubota, and Tonegawa (2024) GRL 51 (19). https://t.co/H4olmZFCM4.

[西田究 / Kiwamu Nishida @qnishida]

新しい論文が出版されました。“Ocean Surface Gravity Waves Excited by the 2022 Eruption of Hunga Tonga‐Hunga Ha’apai Volcano, Nishida, Ichihara, Kubota, and Tonegawa (2024) GRL 51 (19). https://t.co/zCVk8cYvYI

[KUBOTA Tatsuya @kbttats]

And please see also the accompanying paper Sandanbata et al. (2024), who investigated the tsunami amplification mechanism due to the repetitive sources during this event.
https://t.co/0qIafpeVvG

[KUBOTA Tatsuya @kbttats]

Our new paper is now out in GRL. We estimated the source kinematics of a tsunami event around Japan in October 2023. Its tsunami source was identified as multiple seafloor uplifts within a few hours, related to the volcanic unrest of a submarine caldera. https://t.co/ol2yAs70RL