The scaling of experiments on volcanic systems

Frontiers in Digital Humanities

Merle, Olivier¹ 

[1]Laboratoire Magmas et Volcans, Université Blaise Pascal - Centre National de la Recherche Scientifique - IRD, Clermont Ferrand, France

关键词: volcanology;    Scaling;    experiments;    scaled-models;    Scale factors;    Pi Theorem;    Similarity;   

DOI  :  10.3389/feart.2015.00026

学科分类：社会科学、人文和艺术（综合）

来源: Frontiers

【 摘 要 】

In this article, the basic principles of the scaling procedure are first reviewed by a presentation of scale factors. Then, taking an idealized example of a brittle volcanic cone intruded by a viscous magma, the way to choose appropriate analogue materials for both the brittle and ductile parts of the cone is explained by the use of model ratios. Lines of similarity are described to show that an experiment simulates a range of physical processes instead of a unique natural case. The pi theorem is presented as an alternative scaling procedure and discussed through the same idealized example to make the comparison with the model ratio procedure. The appropriateness of the use of gelatin as analogue material for simulating dyke formation is investigated. Finally, the scaling of some particular experiments such as pyroclastic flows or volcanic explosions is briefly presented to show the diversity of scaling procedures in volcanology.

【 授权许可】

CC BY