日本地球惑星科学連合2023年大会

講演情報

[E] 口頭発表

セッション記号 S (固体地球科学) » S-SS 地震学

[S-SS03] New trends in data acquisition, analysis and interpretation of seismicity

2023年5月23日(火) 09:00 〜 10:15 201A (幕張メッセ国際会議場)

コンビーナ:Enescu Bogdan(京都大学 大学院 理学研究科 地球惑星科学専攻 地球物理学教室)、Francesco Grigoli(University of Pisa)、青木 陽介(東京大学地震研究所)、座長:青木 陽介(東京大学地震研究所)、Enescu Bogdan(京都大学 大学院 理学研究科 地球惑星科学専攻 地球物理学教室)、庄 建倉(統計数理研究所)


10:00 〜 10:15

[SSS03-05] Detection of millimiter-scale slow slip events on continental faults in InSAR time series using deep learning

★Invited Papers

*Bertrand Rouet-Leduc1、Romain Jolivet2、Sylvain Michel2、Claudia Hulbert3 (1.DPRI, Kyoto University、2. Laboratoire de Geologie, Ecole Normale Superieure, France、3.Geolabe, USA)


キーワード:Slow earthquakes, Slow slip event, InSAR, Deep learning, Machine learning

Faults can accommodate stress in a variety of slip modes, from dynamic rupture to slow slip events and aseismic slip. Among these slip modes, slow slip events and often-accompanying tremor remain the most elusive and poorly understood.

Unraveling the interactions between slip modes is at stake: while laboratory experiments point to aseismic nucleation generally preceding dynamic rupture, observations in the field are far from systematic, and more the exception than the rule.

However, the difficulty in detecting transient slow slip events, either seismically or geodetically, points to a possible observational gap that may explain the rarity of slow deformation detected prior to dynamic earthquakes.

In this presentation, the use of machine learning to improve the detection of slow slip events will be explored, as a tool to fill this observational gap, both in seismic data and in geodetic data.