第96回統計地震学セミナー / The 96th Statistical Seismology Seminar

【Date＆Time】
5 August, 2024 15:00-16:00
Admission Free, No Booking Necessary
【Place】
online (with zoom) and on-site (ISM 4th floor lounge)
Zoom meeting:
https://us06web.zoom.us/j/83641271480?pwd=eZqRVaErabbyMaM289A82tBmaabBln.1
Meeting ID: 836 4127 1480
Passcode: 446637
【Speaker】
Dr. Xinglin Lei (雷 興林)
(Senior Researcher at the National Institute of Advanced Industrial Science and Technology, AIST (産業技術総合研究所))
【Title】
Can the extent of fluid involvement be quantified by statistics for fluid-involved or fluid-driven seismicity?
【Abstract】
The complexity of seismic activity originates from the complexity of the fault system itself and the interactions between faults during earthquakes. When overpressured fluids are involved underground, the interaction between fluid diffusion and faulting makes seismicity even more complex. Whether there is a specific correlation between the extent of fluid involvement and the statistical characteristics of seismicity is an interesting and worth exploring topic. This report presents systematic analysis results of several seismic sequences with significantly different levels of fluid involvement (including long-term low-pressure water injection and short-term multiple high-pressure water injection-induced seismicity, as well as natural earthquake swarms involving fluids of different extents). It summarizes some basic understandings and highlights several future research directions.