1-1-1-1-1-1-1-1-1-1-1-1-1-1 From: Nicole Metrich <metrich@xxxxxxx> Call for contributions to a special issue of the Bulletin of Volcanology Open-vent volcanoes Open-vent volcanoes are special systems where the dynamics of sustained magmatic processes can be thoroughly investigated and where new monitoring tools can be tested and applied. Open-vent volcanoes however remain puzzling in various aspects and forecasting their behavior can be an important challenge. Such systems are also typically characterized by persistent degassing, Strombolian eruptions and lava lake activity, where masses degassed usually far exceed masses erupted; posing the well-known problem of excess degassing. We thus propose to focus on these systems in a special issue of the Bulletin of Volcanology. Papers dealing with the following (not exclusive) questions are encouraged: 1) What are the specific conditions leading to the existence or disappearance of open-vent volcanoes? 2) Why some of these are short-lived while others are long-lived? 3) Why do some open-vent systems produce lava lakes and others do not? 4) How can such systems remain continuously active over time periods spanning centuries to millenia? 5) What triggers changes in activity style and intensity over the short (hours-days), medium (weeks-months) and long (years-decades) time scales? 6) How can they develop in various tectonic settings and for different magma properties (composition, viscosity, amount of crystals...)? 7) Do they result from specific conditions in their magma feeding system (rate, geometry, depth)? 8) Which are the respective roles of the underlying crust and of the compressibility of the magma reservoir? 9) What can continuous monitoring of open-vent volcanoes teach us? 10) Which are the specific environmental and societal impacts of open-vent volcanic activity? All investigations aimed at a better understanding of open-vent volcanoes will be welcome. Topics can range from geophysical and geochemical measurements, petrological and volatile (gas) studies, process modelling and volcanic hazard simulations, ideally as combined as possible. The deadline for abstract is December 15, 2020 and the deadline for submitting papers is March 31, 2021. Contacts : Sylvie Vergniolle (vergniol@xxxxxxx) or Nicole Métrich (metrich@xxxxxxx) 1-1-1-1-1-1-1-1-1-1-1-1-1-1 ------------------------------
