Tephra layers in marine sediment cores from scientific ocean drilling largely record high-magnitude silicic explosive eruptions in the Japan arc for up to the last 20 million years. Analysis of the thickness variation with distance of 180 tephra layers from a global data set suggests that the majority of the visible tephra layers used in this study are the products of caldera-forming eruptions ...

Fluid-explosive rocks of the dike complex are identified in Middle Timan. The have convergent properties due to a combination explosive and metasomatic processes. study petrographic features revealed their nature. Further chemical composition rock-forming minerals established source mantle material paragenetic relationship with carbonatite magmatism. fluid-explosive dyke long-term multistage fo...

Abstract The theoretical analysis and numerical simulation are combined to explore the generation mechanism propagation characteristics of shock wave in WEIF process. results show that with increase linear density deposition energy, distance same time is longer; as increases, velocity on front gradually decreases. In early stage electric explosion metal wire, shape generated expansion evolution...

Abstract In this paper, copper azide of 2mm in diameter was exerted as the burster, and study object micro initiation train Cl20-based explosive that generated by flyer plate impacting medium accelerating chamber. Results shows that: thickness critical burst increased with plate.Simulation calculation experimental verification were conducted to parameter influence chamber on medium. which could...

In this paper we present a model for the growth of a maar-diatreme complex in a shallow marine environment. The Miocene-age Costa Giardini diatreme near Sortino, in the region of the Iblei Mountains of southern Sicily, has an outer tuff ring formed by the accumulation of debris flows and surge deposits during hydromagmatic eruptions. Vesicular lava clasts, accretionary lapilli and bombs in the ...

Genetic Algorithm (GA) is deployed for optimal design of configuration involved in GMDH-type neural networks which is used for modelling of centre deflection, hoop strain and thickness strain of explosive forming process. In this way, a new encoding scheme is presented to genetically design the generalized GMDH-type neural networks in which the connectivity configuration in such networks is not...