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Room: Ballroom B

Date: 4/17/2026

Session Time: 2:00 PM to 3:15 PM (local time)

SSJ-SSOC-SSA Joint Session: Lessons from Recent Major Earthquake Sequences Around the World

Over the past few years, the global seismic community has observed a number of major earthquakes, including the 2023 M7.8/M7.6 Turkey doublet, the 2024 M7.5 Noto, Japan, the 2025 M7.1 Dingri, China, the 2025 M7.7 Mandalay, Myanmar, and most recently the M8.8 sequence off the coast of the Kamchatka Peninsula, Russia. Some events produced significant damage and casualties while others occurred in more remote regions with limited societal impact. Regardless of their consequences, each event presents a valuable opportunity to deepen our understanding of earthquake physics — shedding light on detailed rupture processes, foreshocks and precursory signals, aftershock triggering mechanisms and their connections to long-term tectonic loading and deep Earth structure.

This session invites contributions that explore new findings and emerging questions arising from these major earthquakes. We welcome studies utilizing seismic, geodetic, geologic, or remote sensing data to better understand the behaviors before, during and after the mainshocks. Given the diversity of tectonic settings — from continental normal and thrust faulting, strike-slip systems to subduction megathrusts — this session aims to foster cross-regional comparisons and synthesis. We are especially interested in contributions that highlight unexpected rupture behaviors, near-field and remote interactions or cascading hazard behaviors. By bringing together researchers who have studied these significant earthquakes around the world, we hope to identify common themes, highlight unique features and improve our overall understanding of major earthquake behaviors. The session aims to promote dialogue across disciplines and regions, and to support the SSA community’s shared goal of advancing earthquake science for the benefit of society.

This session is jointly organized by the Seismological Society of Japan, Seismological Society of China and Seismological Society of America.

Conveners

Dara E. Goldberg, U.S. Geological Survey (degoldberg@usgs.gov)
Ryo Okuwaki, University of Tsukuba (rokuwaki@geol.tsukuba.ac.jp)
Zhigang Peng, Georgia Institute of Technology (zpeng@gatech.edu)
Dun Wang, China University of Geosciences (wangdun@cug.edu.cn)

Oral Presentations