5-5-5-5-5-5-5-5-5-5-5-5-5-5 From: fabiodioguardi@xxxxxxxxx Dear all, I invite you to contribute to Session V04 "Integrated approaches to investigate pyroclastic density currents" at the next IUGG 2023 conference in Berlin (dates). Pyroclastic density currents (PDCs) are among the most hazardous phenomena generated during explosive volcanic eruptions. This, together with their high degree of complexity, justifies the effort that several researchers have made to quantitatively characterize and model these flows. In fact, PDCs display a very wide variety of regimes (from turbulent dilute flows to dense block and ash flows), and each of these, in turn, are characterized by various complex transport-deposition-sedimentation processes that are difficult to model. In this session, we welcome novel contributions on the topic of pyroclastic density currents, with a particular emphasis on integrated approaches that merge field study, laboratory experiments, and numerical modelling at different scales (from the particle to the flow scale). Any contribution on the topic of pyroclastic density current is welcome. See you in Berlin Fabio Dioguardi on behalf of the conveners. fabio.dioguardi@xxxxxxxx 5-5-5-5-5-5-5-5-5-5-5-5-5-5 ------------------------------