Topic V - Geo-hazard > V-1-Advances in lacustrine paleo-earthquake research

Conveners

1. Renaldo Gastineau (Edytem, CNRS, Univ. Savoie Mont Blanc, France)
2. Katrina Kremer (Univ. Bern, Switzerland)
3. Katleen Wils (Ghent University, Belgium)
4. Chris DuRoss (U.S. Geological Survey, Geologic Hazards Science Center, Golden Colorado, USA)
5. Sylvia Nicovich (U.S. Geological Survey, Geologic Hazards Science Center, Golden Colorado, USA)
6. Lesleigh Anderson (U.S. Geological Survey, Geoscience and Environmental Change Science Center, Denver Colorado, USA)
7. Yin Lu (Tongji University, China)

Ruptures on plate boundaries, intraslab, and crustal faults generate ground motions and surface deformation that can significantly impact lake sediments. These events can also trigger secondary effects, such as mass movements and subsequent tsunamis, leaving distinct sedimentary imprints. The response of lake systems to seismic shaking is influenced by seismic wave properties (frequency, amplitude, duration) and the geomechanical characteristics of the substrate (grain size, composition, shear strength). Despite the increasing availability of lake sediment records for documenting past earthquakes, significant challenges remain in identifying and interpreting these signals.

This session aims to advance lacustrine paleoseismology by exploring innovative methodologies and interdisciplinary approaches—including sediment analysis, seismology, and numerical modeling—to refine our understanding of past earthquakes. Topics of interest include, but are not limited to: (1) advances in detecting and interpreting seismic deposits, (2) insights from intraplate and low-relief basin settings, (3) the integration of terrestrial (e.g., fault trenching) and historical earthquake data to improve interpretations from lake records, and (4) the role of lake sediment data in probabilistic seismic hazard assessments. By bridging disciplines, we seek to enhance the reliability of paleoseismic reconstructions and improve our ability to assess seismic hazards from lacustrine archives.