[E] Poster

S (Solid Earth Sciences ) » S-SS Seismology

[S-SS03] Seismological advances in the ocean

Mon. May 27, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

convener:Lina Yamaya(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), Tatsuya Kubota(National Research Institute for Earth Science and Disaster Resilience)

Advances in ocean-bottom seismic observations with seismometers, hydrophones, and pressure gauges have provided us with the opportunity to study seismicity, subsurface structures, earthquake and tsunami generation, and wave phenomena in offshore areas. Permanent (cabled) observatories enable long-term monitoring for these targets, and deployments of dense temporary arrays or fiber optic technologies produce higher-resolution researches. Also, such developments in ocean seismology have invoked the community to create data processing and analyzing techniques. The purpose of this session is to share recent advances in the ocean seismology, such as seismicity, seismic velocity structure conducted from active and passive approaches, progresses in the development of seafloor instrumentation, processing and analyzing techniques for offshore seismic datasets, findings of submarine earthquakes and tsunamis, observation of the seafloor strong motion, characterization of ambient noise and interpretation of its sources, propagation processes of various waves in the atmosphere, ocean, and solid Earth recorded by ocean instruments, and all relevant topics. This session welcomes observation or analysis of enigmatic phenomena such as the 2023 Torishima earthquake. We recommend presentations by early-career researchers and students who would like to try the presentation in an international session.

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5:15 PM - 6:45 PM

[SSS03-P01] Estimations for seismic energy and source duration of shallow tremors along the Nankai Trough incorporating the effects of thick sedimentary layer

*Shunsuke Takemura¹, Suguru Yabe², Koji Tamaribuchi³ (1.Earthquake Research Institute, the University of Tokyo, 2.National Institute of Advanced Industrial Science and Technology, 3.Meteorological Research Institute)

5:15 PM - 6:45 PM

[SSS03-P02] Monitoring of shallow tremors along the Nankai Trough and identification of false detections

*Koji Tamaribuchi¹ (1.Meteorological Research Institute)

5:15 PM - 6:45 PM

[SSS03-P03] Detection of slow slip event from seafloor pressure record using PCA: A case study in Hikurangi Subduction zone

*Hideto Otsuka^1,2, Yusaku Ohta¹, Ryota Hino¹ (1.Graduate School of Science, Tohoku University, 2.Seiko Gakuin High School)

5:15 PM - 6:45 PM

[SSS03-P04] Ocean infragravity waves at seafloor DONET stations

*Hou-Sheng Cheng¹, Emmy T. Y. CHANG¹, Takashi Tonegawa² (1.Institute of Oceanography, National Taiwan University, Taipei, Taiwan, 2.Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan)

5:15 PM - 6:45 PM

[SSS03-P05] Empirical Green's Function Retrieval of Infra-gravity Waves in the Pacific Ocean via Ambient Noise Interferometry

*Kun Chi Ho¹, Justin Yen-Ting Ko¹, Hou-Sheng Cheng¹, Shiann-Jong Lee², Hsin-Hua Huang² (1.Institute of Oceanography, National Taiwan University, Taipei, Taiwan, 2.Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan)

5:15 PM - 6:45 PM

[SSS03-P06] Infragravity wave generation and propagation in the Pacific Ocean revealed by ambient noise correlation

*Kai Xun Chen¹, Yuancheng Gung¹ (1.National Taiwan University)

5:15 PM - 6:45 PM

[SSS03-P07] Noise on Ocean Bottom Seismometers: Observations and New Directions

*Helen A Janiszewski¹, Joshua Russell², Charles Hoots¹, Elliona Maso¹ (1.University of Hawaii at Manoa, 2.Syracuse University)

5:15 PM - 6:45 PM

[SSS03-P08] Space-time monitoring of seafloor shear-wave velocity changes using seismic ambient noise

*Peng Guo¹, Erdinc Saygin¹, Brian L N Kennett² (1.The Commonwealth Scientific and Industrial Research Organisation (CSIRO), 2.Research School of Earth Sciences, The Australian National University)

5:15 PM - 6:45 PM

[SSS03-P09] Spatio-temporal seismic structural variations and its interpretation revealed from seismic interferometry using OBS records around the northern Japan Trench

Takehiro Sato¹, *Ryosuke Azuma¹, Ryota Takagi¹, Ryota Hino¹, Masanao Shinohara² (1.Recearch Center for Prediction of Earthquake and Volcanic Eruption, Graduate School of Science, Tohoku University, 2.Earthquake Research Institute, Univ. of the Tokyo)

5:15 PM - 6:45 PM

[SSS03-P10] Seafloor Rayleigh ellipticity, measured from unoriented data, and its significance for passive seismic imaging in the ocean

*Sanxi AI¹ (1.China University of Geosciences)

5:15 PM - 6:45 PM

[SSS03-P11] High-resolution Tomographic Imaging of the Indo-Australian Plate with Multimode Surface Waves

*Debasis D Mohanty^1,2,3, Kazunori Yoshizawa¹ (1.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, Sapporo, Japan, 2.North East Institute of Science and Technology, Council of Scientific and Industrial Reserach, Jorhat, Assam, India, 3.Academy of Scientific and Industrial Reserach (AcSIR), Delhi, India)

5:15 PM - 6:45 PM

[SSS03-P12] The Oldest-2 array observation: Second seafloor observation to study the lithosphere–asthenosphere system beneath the oldest Pacific Ocean

*Takehi Isse¹, Kiyoshi Baba¹, Ban-Yuan Kuo², PeiYing Patty Lin³, Wu-Cheng Chi², Chen-Hsiang Hung³, Ding-Jiun Lin⁴, Hogyum Kim⁵, Nozomu Takeuchi¹, Hitoshi Kawakatsu^1,2, Hajime Shiobara¹, Hisashi Utada¹, onboard scientists of 2022/2023 Oldest-2 cruises by R/V Legend - (1.Earthquake Research Institute University of Tokyo, 2.Institute of Earth Sciences, Academia Sinica, 3.National Taiwan Normal University, 4.National Central University, 5.Seoul National University)

5:15 PM - 6:45 PM

[SSS03-P13] Seismic and thermal structure imaging in NE Japan: New insights into slab melting and arc magmatism

*Zhi Wang¹ (1.Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China)

Session information

[S-SS03] Seismological advances in the ocean

[SSS03-P01] Estimations for seismic energy and source duration of shallow tremors along the Nankai Trough incorporating the effects of thick sedimentary layer

[SSS03-P02] Monitoring of shallow tremors along the Nankai Trough and identification of false detections

[SSS03-P03] Detection of slow slip event from seafloor pressure record using PCA: A case study in Hikurangi Subduction zone

[SSS03-P04] Ocean infragravity waves at seafloor DONET stations

[SSS03-P05] Empirical Green's Function Retrieval of Infra-gravity Waves in the Pacific Ocean via Ambient Noise Interferometry

[SSS03-P06] Infragravity wave generation and propagation in the Pacific Ocean revealed by ambient noise correlation

[SSS03-P07] Noise on Ocean Bottom Seismometers: Observations and New Directions

[SSS03-P08] Space-time monitoring of seafloor shear-wave velocity changes using seismic ambient noise

[SSS03-P09] Spatio-temporal seismic structural variations and its interpretation revealed from seismic interferometry using OBS records around the northern Japan Trench

[SSS03-P10] Seafloor Rayleigh ellipticity, measured from unoriented data, and its significance for passive seismic imaging in the ocean

[SSS03-P11] High-resolution Tomographic Imaging of the Indo-Australian Plate with Multimode Surface Waves

[SSS03-P12] The Oldest-2 array observation: Second seafloor observation to study the lithosphere–asthenosphere system beneath the oldest Pacific Ocean

[SSS03-P13] Seismic and thermal structure imaging in NE Japan: New insights into slab melting and arc magmatism

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