Results 51 to 60 of about 1,425,422 (190)

Streamline and Isotherm Visual Analysis of Darcy–Forchheimer von Karman Spinning Flow of Maxwell Fluid Over a Stretching Disk With Quadratic Temperature‐Dependent Heat Source

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This research paper provides an extensive study of the effects of Darcy–Forchheimer von‐Karman spinning flow of Maxwell fluid across a stretching disk including the effect of heat generation based on a nonlinear function of temperature. The flow system is influenced by thermal radiations and Arrhenius activation energy.
Ebrahem A. Algehyne   +6 more
wiley   +1 more source

Endogenous magma degassing and storage at Mount Etna [PDF]

open access: yesGeophysical Research Letters, 1997
Combining SO2 plume emissions from Mt. Etna in 1975–1995 with the magma S content suggests that between 3.5 and 5.9 km³ of basalt were degassed for sulfur over two decades, only 10–20% of which actually extruded. Except during extensive lava outbreak (1992), the SO2 flux was mostly supplied by endogenous degassing of non‐erupted basalt, replaced at a ...
openaire   +2 more sources

Lava production at Soufriere Hills Volcano, Montserrat: 1995-2009 [PDF]

open access: yes, 2010
[1] We estimate that about 1 km3 of andesitic lava has been produced at Soufrière Hills Volcano, Montserrat from 1995 to 2009. There were three major episodes of extrusion, each lasting about 2 to 3.5 years and producing about 280 to 340 M m3 of lava ...
Calder, E. S.   +14 more
core   +1 more source

An analytical model for gas overpressure in slug-driven explosions : insights into Strombolian volcanic eruptions [PDF]

open access: yes, 2012
Strombolian eruptions, common at basaltic volcanoes, are mildly explosive events that are driven by a large bubble of magmatic gas (a slug) rising up the conduit and bursting at the surface.
Scarlato, Piergiorgio   +4 more
core   +5 more sources

Managing and visualising geochemical data for tephra correlation with the IntChron Integration Tool

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT There is now a wealth of glass‐shard geochemical data for volcanic ash (tephra) layers from a wide range of volcanoes and eruptions, providing invaluable datasets for tephrochronology. However, compilation of published data to assess tephra correlations leads to large files and requires careful management.
Victoria C. Smith   +5 more
wiley   +1 more source

Thermal Constraints on the Longevity, Depth, and Vertical Extent of Magmatic Systems

open access: yesGeochemistry, Geophysics, Geosystems, 2021
Magmatic regions are typically viewed as vertical systems, with magma coming in the bottom and either freezing in the crust to form plutons or erupting to form volcanic rocks.
Allen F. Glazner
doaj   +1 more source

Basalt Fiber Surface Modification for Improved Interaction With Polyamide‐6 for High‐Performance Automotive Applications

open access: yesPolymer Composites, EarlyView.
Amino‐silane treatment improves the basalt fiber–PA6 interface, enhancing composite performance. ABSTRACT Basalt fiber‐reinforced polymer (BFRP) composites have emerged as sustainable alternatives to glass fiber (GF) composites, but their performance is often controlled by the quality of the fiber–matrix adhesion.
Mohammad Mezbah Ul Hoque   +3 more
wiley   +1 more source

Exploring the links between volcano flank collapse and the magmatic evolution of an ocean island volcano: Fogo, Cape Verde

open access: yesScientific Reports, 2021
Mass-wasting of ocean island volcanoes is a well-documented phenomenon. Massive flank collapses may imply tens to hundreds of km3 and generate mega-tsunamis.
Mélodie-Neige Cornu   +8 more
doaj   +1 more source

Forensic Hydraulic Analysis of Floodplain Connectivity Driven by Historical Beaver Dams in Colorado Headwater Streams

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT As ecosystem engineers, beavers (Castor canadensis) modify river corridor form through dam building. When beavers are removed from a river corridor, their unmaintained dams wash out, altering the stream's hydrologic regime. The assumption that beaver dams increase floodplain connectivity is frequently presumed but has not been directly ...
Kayla Schultz   +4 more
wiley   +1 more source

Varying processes, similar results: How composition influences fragmentation and subsequent feeding of large pyroclastic density currents

open access: yesFrontiers in Earth Science, 2022
Unlike their silicic counterparts, mafic eruptions are known for being on the low-end of the explosivity spectrum with eruption styles commonly ranging from effusive to Hawaiian fire fountaining.
Olivier Bernard   +10 more
doaj   +1 more source

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