2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2 From: "Lube, Gert" <G.Lube@xxxxxxxxxxxx> 2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2 Dear pyroclastic current modelers and experimentalists, As our understanding of pyroclastic currents (a.k.a. PDCs, pyroclastic flows, pyroclastic surges) has advanced and become increasingly quantitative, the need to develop benchmarking and validation (B&V) methods for flow models has grown. In the past, individual model developers and users have pursued different approaches and differing levels of rigor for B&V. Community efforts have also begun to emerge, such as a 2013 workshop on flow model validation that was held in conjunction with the IAVCEI meeting in Kagoshima, and a 2019 workshop hosted by Massey University (New Zealand). Simultaneously experimental datasets that can be used to validate models have been growing. Because of the importance of modeling for advancing our fundamental understanding of pyroclastic currents and - critically - for hazards and risk applications, now is an opportune time to bring a community-wide focus to B&V. *Terminology:* *Validation* - comparison of a specific model with field or experimental data in order to test the accuracy of the physics embodied by the model. *Benchmark* - comparison of results of multiple models with each other and with datasets. This is aimed not at determining which model is "better," but at understanding their differences and the situations to which they can best be applied. We are soliciting papers for a Topical Collection to be published in *Bulletin of Volcanology* under the general heading of "Pyroclastic current benchmarking and validation." Papers can include: (1) descriptions of specific experiments and resulting data that can be used for B&V; (2) B&V results for specific models; (3) Field datasets (from active flows or deposits) that are sufficiently constrained for use as B&V cases. Papers published in the Topical Collection will be published as "normal" BV papers, as they are accepted, and will also placed under the Topical Collection side of the BV website. The Collection will remain open until the effort has sufficiently matured. If you would like to contribute, please submit a tentative title and timeline for your submission to Greg Valentine (gav4@xxxxxxxxxxx), who will serve as editor for the Topical Collection. Thanks much -Tomaso Esposti Ongaro, Sylvain Charbonnier, Gert Lube, Greg Valentine ============================================================== Volcano Listserv is a collaborative venture among Arizona State University (ASU), Portland State University (PSU), the Global Volcanism Program (GVP) of the Smithsonian Institution's National Museum of Natural History, and the International Association for Volcanology and Chemistry of the Earth's Interior (IAVCEI). ASU - http://www.asu.edu/ PSU - http://pdx.edu/ GVP - http://www.volcano.si.edu/ IAVCEI - http://www.iavcei.org/ To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxx. To contribute to the volcano list, send your message to: volcano@xxxxxxx. Please do not send attachments. ============================================================== ------------------------------
