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In situ observation of the percolation threshold in multiphase magma analogues
(
- Bulletin of Volcanology
, 2020-03-04)
Magmas vesiculate during ascent, producing complex interconnected pore networks, which can act as outgassing pathways and then deflate or compact to volcanic plugs. Similarly, in-conduit fragmentation events during ...
Rheological change and degassing during a trachytic Vulcanian eruption at Kilian Volcano, Chaîne des Puys, France
(
- Bulletin of Volcanology
, 2020-11-20)
Magma ascent during silicic dome-forming eruptions is characterized by significant changes in magma viscosity, permeability, and gas overpressure in the conduit. These changes depend on a set of parameters such as ascent ...
AVISA: anisotropic visco-ISA model and its performance at cyclic loading
(
- Acta Geotechnica
, 2020-02-19)
In this work, a constitutive model able to capture the strain rate dependency, small strain effects and the inherent anisotropy is proposed considering the influence of the overconsolidation ratio (OCR). Small strain effects ...
Implications of the principle of effective stress
(
- Acta Geotechnica
, 2020-11-24)
While Terzaghi justified his principle of effective stress for water-saturated soil empirically, it can be derived by means of the neutrality of the mineral with respect to changes of the pore water pressure p w. This ...
Cenozoic Exhumation and Deformation of the Intermontane Pastos Chicos Basin in the Southern Central Andes: Implications for the Tectonic Evolution of the Andean Plateau (Puna) and the Eastern Cordillera Between 23° and 24°S, NW Argentina
(
- Tectonics
, 2023-02-03)
The Andean Plateau of north‐western Argentina (Puna) at a mean elevation of ca. 4.2 km constitutes the southern continuation of the Altiplano; it is a compressional basin‐and‐range province comprising fault‐bounded, ...
Stratigraphic reconstruction of the Víti breccia at Krafla volcano (Iceland): insights into pre-eruptive conditions priming explosive eruptions in geothermal areas
(
- Bulletin of Volcanology
, 2021-11-02)
Krafla central volcano in Iceland has experienced numerous basaltic fissure eruptions through its history, the most recent examples being the Mývatn (1724‒1729) and Krafla Fires (1975–1984). The Mývatn Fires opened with a ...
Rhine flood stories: Spatio‐temporal analysis of historic and projected flood genesis in the Rhine River basin
(
- Hydrological Processes
, 2023-06-13)
<title xmlns:mml="http://www.w3.org/1998/Math/MathML">Abstract</title><p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en">The genesis of floods in large river basins often is complex. Streamflow originating ...
Paleo‐denudation rates suggest variations in runoff drove aggradation during last glacial cycle, Crete, Greece
(
- Earth Surface Processes and Landforms
, 2022-11-13)
Fluvial aggradation and incision are often linked to Quaternary climate cycles, but it usually remains unclear whether variations in runoff or sediment supply or both drive channel response to climate variability. Here we ...
Structural style and neotectonic activity along the Harz Boundary Fault, northern Germany: a multimethod approach integrating geophysics, outcrop data and numerical simulations
(
- International Journal of Earth Sciences
, 2020-05-30)
We present new evidence for neotectonic activity along the Harz Boundary Fault, a Cretaceous reverse fault that represents a key structure in northern Germany. For the fault analysis, we use a multimethod approach, integrating ...
The Role of Rock Matrix Permeability in Controlling Hydraulic Fracturing in Sandstones
(
- Rock Mechanics and Rock Engineering
, 2021-07-30)
A concomitant effect of a hydraulic fracturing experimenting is frequently fluid permeation into the rock matrix, with the injected fluid permeating through the porous rock matrix (leak-off) rather than contributing to the ...