Results 51 to 60 of about 2,884 (212)

Estimation and uncertainty quantification of magma interaction times using statistical emulation

open access: yesVolcanica
The evolution of volcanic plumbing systems, which controls the style and size of eruptions, is largely determined by processes at depths that are not observable.
Luca Insolia   +4 more
doaj   +1 more source

Porosity Preservation in Deeply Buried (8500 m) Jurassic Calcareous Mudstones of the Vienna Basin (Austria)

open access: yesTerra Nova, EarlyView.
ABSTRACT Significant porosity of more than 5% was found at depths of more than 8500 m in poorly sorted, calcareous mudstones of the Malmian Mikulov Formation. These overpressured rocks are the main hydrocarbon source rock in the Vienna Basin. Core samples from present‐day depths of 8150 m to 8550 m were analysed using X‐ray diffraction and scanning ...
Susanne Gier   +3 more
wiley   +1 more source

Fault‐Controlled Permeability: A Key Parameter in Geothermal Electricity Production Assessment

open access: yesTerra Nova, EarlyView.
ABSTRACT Geothermal energy is central to the global green energy transition, but its development has long focused on regions with positive thermal anomalies. Through a semi‐quantitative global‐scale review and spatial analysis of 361 geothermal sites, we show that 56.2% of global geothermal electricity production occurs in regions with thermal ...
Vincent Roche, Gaétan Milesi
wiley   +1 more source

DensityX: A program for calculating the densities of magmatic liquids up to 1,627 °C and 30 kbar

open access: yesVolcanica, 2019
Here we present a standalone program, DensityX, to calculate the densities of hydrous silicate melts (1,000s of samples in a single model run) given pressures, temperatures, and major oxide compositions in wt% in the 10-component system SiO2-TiO2-Al2O3 ...
Kayla Iacovino, Christy B Till
doaj   +1 more source

Affiner la description des termes dans les dictionnaires généraux : l’apport d’un corpus de vulgarisation

open access: yesLexis: Journal in English Lexicology, 2010
The aim of the paper is to show how useful a popular-science corpus can be to improve the inventory and description of terminological units in general-purpose dictionaries.
Amélie Josselin-Leray
doaj   +1 more source

Introduction to the Volcanology

open access: yes, 2022
The main volcanological concept is shown and expressed so that any volcano can be understood easily. Volcanic products are listed and explained in plain language from lava flow to various pyroclastic products. The volcanic products have been explained schematically and their textural, field relationships characteristics are highlighted.
Angelo Paone, Sung-Hyo Yun
openaire   +1 more source

Role of mechanical erosion in controlling the effusion rate of basaltic eruptions

open access: yesGeophysical Research Letters, 2016
In many basaltic eruptions, observations show that the effusion rate of magma has a typical dependence on time: the effusion rate curves show first a period of increasing and later a decreasing phase by a maximum value. We present a model to explain this
Antonello Piombo   +2 more
doaj   +1 more source

Introducing Geoscience Students to Numerical Modeling of Volcanic Hazards: The example of Tephra2 on VHub.org

open access: yesNumeracy, 2012
The Tephra2 numerical model for tephra fallout from explosive volcanic eruptions is specifically designed to enable students to probe ideas in model literacy, including code validation and verification, the role of simplifying assumptions, and the ...
Leah M. Courtland   +3 more
doaj   +1 more source

Disclosing the temperature of columnar jointing in lavas

open access: yesNature Communications, 2018
Columnar joints in lavas form during cooling, but the temperature this occurs at is unclear. Here, the authors perform thermo-mechanical experiments on basaltic rocks to examine the temperature of columnar joints in lavas and find that failure occurs at ...
Anthony Lamur   +6 more
doaj   +1 more source

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