Solid Earth Sciences (S)
Session Sub-category Seismology (SS)
Session ID S-SS04
Title Seismological advances in the ocean
Short Title Seismological advances in the ocean
Main Convener Name Ayumu Mizutani
Affiliation International Research Institute of Disaster Science, Tohoku University
Co-Convener 1 Name Takashi Tonegawa
Affiliation Research and Development center for Earthquake and Tsunami, Japan Agency for Marine-Earth Science and Technology
Co-Convener 2 Name Tatsuya Kubota
Affiliation National Research Institute for Earth Science and Disaster Resilience
Session Language
E
Scope
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, volcanic activities, and relevant 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 offshore observations or analyses related to recent offshore major earthquakes, e.g., the Noto and Hyuga-nada in Japan and the Hualien in Taiwan. We recommend presentations by early-career researchers and students who would like to try the presentation in an international session.
Presentation Format Oral and Poster presentation
Invited Authors Meichen Liu (California Institute of Technology)
Helen A Janiszewski (University of Hawaii at Manoa)
Yuko Kondo (Kobe University)
Ritsuya Shibata (National Research Institute for Earth Science and Disaster Resilience)
Time Presentation No Title Presenter
Oral Presentation May 29 AM1
9:00 - 9:15 SSS04-01 Trans-Oceanic Distributed Sensing of Tides over Telecommunication Cable Between Portugal and Brazil Meichen Liu
9:15 - 9:30 SSS04-02 Noise on Seafloor Seismic Instrumentation: Observations and New Directions Helen A Janiszewski
9:30 - 9:45 SSS04-03 Noise Reduction for Ocean Bottom Seismometer Waveforms by Generative Models Jun Su
9:45 - 10:00 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 Tonegawa
10:00 - 10:15 SSS04-05 3-D velocity structure beneath Japan derived from local and teleseismic data recorded by S-net and Hi-net Motoya Suzuki
10:15 - 10:30 SSS04-06 Shear wave velocity structure in deep Ontong Java Plateau region by a joint finite-frequency inversion of body and surface wave data Yuko Kondo
Oral Presentation May 29 AM2
10:45 - 11:00 SSS04-07 Low-frequency ocean gravity waves triggered by tropical cyclones via seafloor distributed acoustic sensing Hou-Sheng Cheng
11:00 - 11:15 SSS04-08 Linking Ocean Storms and Earth's Hum Excitation: Seasonal Infragravity Wave Observations in the Pacific Ocean Kai Xun Chen
11:15 - 11:30 SSS04-09 Seismicity and Repeating Events of the Blanco Transform Fault System in the Northeast Pacific from Machine Learning Dietrich Lange
11:30 - 11:45 SSS04-10 Microseismic Activity and Fault Structure in the Eastern Marmara Sea: High-Resolution Observations from Ocean Bottom Seismometers (OBS) Nurcan Meral Ozel
11:45 - 12:00 SSS04-11 Quantifying interplate seismic coupling from fault modeling of the 2024 Hyuganada earthquake using tsunami and GNSS data Tatsuya Kubota
12:00 - 12:15 SSS04-12 Kinematic earthquake source modeling with ocean bottom seismometer data and empirical Green’s function approach Ritsuya Shibata
Presentation No Title Presenter
Poster Presentation May 29 PM3
SSS04-P01 Locating ocean microseism sources using seismic observations in the Caribbean region Viana Poveda Brossard
SSS04-P02 Spatio-temporal variation of seismic velocity changes in the Nankai accretionary prism using body wave of ambient noise autocorrelation Yusuke Kakiuchi
SSS04-P03 Along-Slope Currents Driving Gas Bubble Emissions in the Northern South China Sea emmy TY CHANG
SSS04-P04 Upper Mantle P-wave Velocity Structure Beneath the Oldest Pacific Seafloor Revealed From Finite-Frequency Travel-Time Tomography Using Oldest-1 and Oldest-2 OBS Data Jun-Jie Ke
SSS04-P05 Earthquake activity in Manila subduction zone off the western Luzon Island : Experience and preliminary results with the Ocean Bottom Seismometer Shiou-Ya Wang
SSS04-P06 Seismic activity by long-term seafloor observation in the Hyuga-nada and spatiotemporal relation of fast and slow earthquakes ChingYu Hu
SSS04-P07 The image of ocean volcanic activities revealed by the simultaneous epicenter and depth estimation method in ocean seismicity Tetsuya Aoyama