2-2-2-2-2-2-2-2-2-2-2-2-2 From: Kyle Anderson <kranderson@xxxxxxxx> Dear colleagues, We are excited to announce an AGU Chapman Conference on caldera-forming rift eruptions to be held next February in Hilo, Hawaii, USA. Our aim is to contrast observations from historical eruptions â?? including at Miyakejima, Piton de la Fournaise, Bárðarbunga, and Kilauea â?? establish our current understanding, identify outstanding questions, and motivate lasting new research efforts. *Caldera-forming eruptions at basaltic volcanoes: Insights and puzzles from KÄ«lauea and beyond* *When*: 10-14 February 2025 (plus optional post-conference field trip) *Where*: Grand Naniloa Hotel in Hilo, Hawaii, USA We will have four primary science sessions, each with a mix of oral presentations and posters: 1. Historical eruptions and open questions 2. Coupled magmatic-tectonic caldera-rift systems 3. Eruptive processes, hazards, and forecasting 4. The post-collapse period and the evolution of caldera-rift systems The small size of the conference will permit close interactions among participants, and we are planning an exciting agenda that includes small-group discussions, workshops and panels, early career events, and social activities. The conference will also include a field trip to KÄ«lauea's summit caldera and an optional post-conference field trip to visit sites from KÄ«lauea's 2018 lower East Rift Zone eruption. *For more information please see the conference website <https://urldefense.com/v3/__https://www.agu.org/chapman-basaltic-caldera-forming-eruptions__;!!IKRxdwAv5BmarQ!YaSJ8xu3ZmWdEd8MY_GtbyvfeAOTTTM9x8NpJP65iY8ZQeTadA21ir6gqWL_mESjva8d52TMAcqOk04yv5WGkuzcCw$> (still under development) or contact any of the conveners. Abstract submissions will be open in mid-August. Student and early career travel support may be available.* *Conference description:* Basaltic caldera-forming rift eruptions represent an underappreciated hazard for many global communities, but also an opportunity to better understand some of Earthâ??s most active volcanoes. A handful of these eruptions have been documented globally in the last half-century, including at Miyakejima (Japan), Piton de la Fournaise (La Réunion), Bárðarbunga (Iceland), and most recently at KÄ«lauea (Hawaiâ??i). KÄ«laueaâ??s 2018 eruption was documented in remarkable detail and was its most impactful in centuries, involving more than one cubic kilometer of basaltic lava flows, a magnitude ~7 flank earthquake, and a major summit collapse. Observations from KÄ«lauea and other global historical eruptions offer an unprecedented opportunity to understand calderas and associated rift systems and the dynamics of their interplay, but a community-driven synthesis has been lacking, and numerous fundamental scientific questions remain. This conference will bring together an interdisciplinary group of scientists to contrast observations from historical global caldera-rift eruptions, establish the state-of-the-art in understanding, identify outstanding questions, and motivate lasting new research efforts. We will address the causes of these eruptions, the dynamics of basaltic caldera collapses, the interaction of summit calderas and rift zones, the geometry and physical properties of subcaldera and rift zone magma storage zones, and challenges in forecasting these eruptions and their associated hazards. Resulting insights should prove valuable when the next large basaltic caldera collapse takes place somewhere on Earth. *Conveners:* Kyle Anderson, U.S. Geological Survey Kendra Lynn, U.S. Geological Survey Thomas Shea, University of Hawaiâ??i at MÄ?noa Aline Peltier, Institut de Physique du Globe de Paris Michael Poland, U.S. Geological Survey Ashton Flinders, U.S. Geological Survey 2-2-2-2-2-2-2-2-2-2-2-2-2 ------------------------------
