Wed. May 27, 2026 5:15 PM - 7:00 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

This session is to discuss widespread submarine geohazards across the globe. Submarine geohazards range from volcano eruption to earthquakes, tsunamis, seabed liquefaction, seabed creep, submarine slides, turbidity currents, shallow gas eruptions, mud volcanoes, and sediment instability such as migrating bedforms and scour and erosion around marine and offshore structures. Submarine landslide tsunamis are now seen from all geological environments; passive, convergent and transform margins, as well as volcanoes. We target the full spectrum of such geohazards that impact people lives and critical infrastructures. Offshore renewable energy systems are rapidly advancing to meet global requirements for sustainable development. Underwater fiber optic cables, underwater power cables, and underwater pipelines have been laid over many parts of the seafloor, and their importance, either strategic and economic, increased dramatically in recent years. However, these marine and offshore infrastructures are at risk from multiple cascading multi-geohazards that include landslides, tsunamis, earthquakes, and volcanic eruptions. Due to their widespread occurrence across the globe, submarine geohazards are a globally relevant and critical issue to be better addressed in the face of global climate change.