Japan Geoscience Union Meeting 2016

Presentation information

International Session (Oral)

Symbol S (Solid Earth Sciences) » S-CG Complex & General

[S-CG21] Recent advances and future directions in slow earthquake science

Sun. May 22, 2016 1:45 PM - 3:15 PM A08 (APA HOTEL&RESORT TOKYO BAY MAKUHARI)

Convener:*Yoshihiro Ito(Disaster Prevention Research Institute, Kyoto University), Michael Brudzinski(Miami University), Ryosuke Ando(Graduate School of Science, University of Tokyo), Hitoshi Hirose(Research Center for Urban Safety and Security, Kobe University), Amanda Thomas(University of Oregon), Chair:Amanda Thomas(University of Oregon), Ryosuke Ando(Graduate School of Science, University of Tokyo)

2:30 PM - 2:45 PM

[SCG21-16] Earthquake swarms along the Oaxaca segment of the Mexico subduction zone and relationships to slow slip phenomena

★Invited papers

*Michael R Brudzinski1, Shannon Fasola1, Robert Skoumal1 (1.Miami University Oxford)

Earthquake swarms are thought to differ from traditional mainshock-aftershock sequences due to a separate driving processes such as slow slip or fluid flow. Several recent studies have suggested that tracking earthquake swarms may provide an indication of broader fault movement, which could eventually result in triggering of larger earthquakes. We utilize waveform correlation techniques to enhance the detection and characterization of earthquake swarms. We focus on the Oaxaca region of the Mexico subduction zone where a locally deployed joint seismic-GPS network has been maintained for 10 years. This network has previously been used to identify and locate many episodes of slow slip and nonvolcanic tremor across the study region. The improved temporal and spatial characterization of the earthquake swarms will be compared with the patterns of slow slip and nonvolcanic tremor to investigate the potential physical relationships between these different aspects of fault slip.