Ž . Gabbroic sills intruding dunite in the crust–mantle transition zone MTZ of the Oman ophiolite have textures and compositions very similar to those in modally layered gabbros that form the lower part of the gabbro section in the ophiolite, and different from those in non-layered gabbros near the dike–gabbro transition. The presence of gabbroic sills in the MTZ indicates that modally layered ...

Magma is transported in brittle rock through dikes and sills. This movement may be accompanied by the release of seismic energy that can be tracked from the Earth’s surface. Locating dikes and deciphering their dynamics is therefore of prime importance in understanding and potentially forecasting volcanic eruptions. The Seismic Amplitude Ratio Analysis (SARA) method aims to track melt propagati...

Orientation of the eruption fissures and composition of the lavas of the Miyakejima volcano is indicative of the competitive processes of the regional tectonic stress and the local stress generated by the activity of a magma plumbing system beneath the volcano. We examined the distributions and magmatic compositions of 23 fissures that formed within the last 2800 years, based on a field survey ...

This paper presents a study of run-up/overtopping over smooth impermeable dike with promenade using 2D and 3D mesh-based mesh-free numerical models results from physical modelling for strong energetic incident waves. These waves induce plunging wave breaking complex water/air mixture turbulent flow before overtopped the dike, challenging configuration models. The analysis is structured in two p...

Abstract Spur dike is one of the various technologies utilized in river rehabilitation. provides many advantages, such as promoting aquatic habitat, improving channel for navigation, and protecting stream banks. This study serves to evaluate effect a spur on formation sand bars straight rectangular fed by suspended sediment. The performance inducing investigated under three different angles. A ...