Thu. May 29, 2025 9:00 AM - 10:30 AM 201A (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-SS Seismology

[S-SS04] Seismological advances in the ocean

convener:Ayumu Mizutani(International Research Institute of Disaster Science, Tohoku University), Takashi Tonegawa(Research and Development center for Earthquake and Tsunami, Japan Agency for Marine-Earth Science and Technology), Tatsuya Kubota(National Research Institute for Earth Science and Disaster Resilience), Chairperson:Tatsuya Kubota(National Research Institute for Earth Science and Disaster Resilience), Ayumu Mizutani(International Research Institute of Disaster Science, Tohoku University)

Thu. May 29, 2025 10:45 AM - 12:15 PM 201A (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-SS Seismology

[S-SS04] Seismological advances in the ocean

convener:Ayumu Mizutani(International Research Institute of Disaster Science, Tohoku University), Takashi Tonegawa(Research and Development center for Earthquake and Tsunami, Japan Agency for Marine-Earth Science and Technology), Tatsuya Kubota(National Research Institute for Earth Science and Disaster Resilience), Chairperson:Tatsuya Kubota(National Research Institute for Earth Science and Disaster Resilience), Takashi Tonegawa(Research and Development center for Earthquake and Tsunami, Japan Agency for Marine-Earth Science and Technology)

Thu. May 29, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[E] Poster
| S (Solid Earth Sciences )
| S-SS Seismology

[S-SS04] Seismological advances in the ocean

convener:Ayumu Mizutani(International Research Institute of Disaster Science, Tohoku University), Takashi Tonegawa(Research and Development center for Earthquake and Tsunami, Japan Agency for Marine-Earth Science and Technology), Tatsuya Kubota(National Research Institute for Earth Science and Disaster Resilience)

Wed. May 28, 2025 10:45 AM - 12:15 PM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG45] Science of slow-to-fast earthquakes

convener:Aitaro Kato(Earthquake Research Institute, the University of Tokyo), Asuka Yamaguchi(Atomosphere and Ocean Research Institute, The University of Tokyo), Ryoko Nakata(Graduate School of Science, The University of Tokyo), Kurama Okubo(National Research Institute for Earth Science and Disaster Resilience), Chairperson:Akiko Takeo(Earthquake Research Institutute, the University of Tokyo), Takashi Tonegawa(Research and Development center for Earthquake and Tsunami, Japan Agency for Marine-Earth Science and Technology)

Thu. May 29, 2025 9:00 AM - 10:30 AM 201A (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-SS Seismology

[S-SS04] Seismological advances in the ocean

9:45 AM - 10:00 AM

[SSS04-04] Seismic imaging with teleseismic waves and ambient noises observed by a submarine cable in the Nankai subduction zone with distributed acoustic sensing

*Takashi Tonegawa¹, Eiichiro Araki¹ (1.Japan Agency for Marine-Earth Science and Technology)

Thu. May 29, 2025 10:45 AM - 12:15 PM 201A (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-SS Seismology

[S-SS04] Seismological advances in the ocean

10:45 AM - 11:00 AM

[SSS04-07] Low-frequency ocean gravity waves triggered by tropical cyclones via seafloor distributed acoustic sensing

*Hou-Sheng Cheng^1,2, Takashi Tonegawa², Emmy T. Y. CHANG¹, Eiichiro Araki² (1.Institute of Oceanography, National Taiwan University, Taiwan, 2.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Japan)

Thu. May 29, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[E] Poster
| S (Solid Earth Sciences )
| S-SS Seismology

[S-SS04] Seismological advances in the ocean

5:15 PM - 7:15 PM

[SSS04-P02] Spatio-temporal variation of seismic velocity changes in the Nankai accretionary prism using body wave of ambient noise autocorrelation

*Yusuke Kakiuchi¹, Takeshi Tsuji¹, Takashi Tonegawa² (1.School of Engineering, The University of Tokyo, 2.Japan Agency for Marine-Earth Science and Technology )

5:15 PM - 7:15 PM

[SSS04-P06] Seismic activity by long-term seafloor observation in the Hyuga-nada and spatiotemporal relation of fast and slow earthquakes

*ChingYu Hu^1,2, Masanao Shinohara², Yusuke Yamashita³, Takashi Tonegawa⁴, Tomoaki Yamada², Takeshi Akuhara², Kimihiro Mochizuki² (1.Graduate School of Science, The University of Tokyo, 2.Earthquake Research Institute,The University of Tokyo, 3.Disaster Prevention Research Institute, Kyoto University, 4.Japan Agency for Marine-Earth Science and Technology)

Wed. May 28, 2025 9:00 AM - 10:30 AM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG45] Science of slow-to-fast earthquakes

9:15 AM - 9:30 AM

[SCG45-38] Observational Efforts toward Understanding the Slow Slip to the Trench in the Subduction Zone of Megathrust Earthquake Source Regions

*Eiichiro Araki¹, Kohtaro Ujiie², Hiroko Sugioka⁴, Masanao Shinohara³, Hajime Shiobara³, Takeshi Akuhara³, Keisuke Ariyoshi¹, Takashi Tonegawa¹, Aki Ito¹, shuhei nishida¹, takashi yokobiki¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Tsukuba University, 3.ERI, the University of Tokyo, 4.Kobe University)

Wed. May 28, 2025 10:45 AM - 12:15 PM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG45] Science of slow-to-fast earthquakes

11:15 AM - 11:30 AM

[SCG45-45] Temporal variation in seismic velocity at the Nankai accretionary prism: Implication to fluids, stress field and plate coupling

*Takashi Tonegawa¹ (1.Japan Agency for Marine-Earth Science and Technology)

Takashi Tonegawa

Convener, Chairperson

[S-SS04] Seismological advances in the ocean

[S-SS04] Seismological advances in the ocean

[S-SS04] Seismological advances in the ocean

[S-CG45] Science of slow-to-fast earthquakes

Speaker, Author, Co-Author

[S-SS04] Seismological advances in the ocean

[SSS04-04] Seismic imaging with teleseismic waves and ambient noises observed by a submarine cable in the Nankai subduction zone with distributed acoustic sensing

[S-SS04] Seismological advances in the ocean

[SSS04-07] Low-frequency ocean gravity waves triggered by tropical cyclones via seafloor distributed acoustic sensing

[S-SS04] Seismological advances in the ocean

[SSS04-P02] Spatio-temporal variation of seismic velocity changes in the Nankai accretionary prism using body wave of ambient noise autocorrelation

[SSS04-P06] Seismic activity by long-term seafloor observation in the Hyuga-nada and spatiotemporal relation of fast and slow earthquakes

[S-CG45] Science of slow-to-fast earthquakes

[SCG45-38] Observational Efforts toward Understanding the Slow Slip to the Trench in the Subduction Zone of Megathrust Earthquake Source Regions

[S-CG45] Science of slow-to-fast earthquakes

[SCG45-45] Temporal variation in seismic velocity at the Nankai accretionary prism: Implication to fluids, stress field and plate coupling