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Experimental Deformation of Opalinus Clay at Elevated Temperature and Pressure Conditions: Mechanical Properties and the Influence of Rock Fabric
; ; ; ; ; (Rock Mechanics and Rock Engineering, 2021-05-11)
The mechanical behavior of the sandy facies of Opalinus Clay (OPA) was investigated in 42 triaxial tests performed on dry samples at unconsolidated, undrained conditions at confining pressures (pc) of 50–100 MPa, temperatures ... -
Experimental Evaluation of Airlift Performance for Vertical Pumping of Water in Underground Mines
; ; (Mine Water and the Environment, 2021-08-14)
This paper presents experimental studies on the optimization of air–water flow in an airlift pump. Airlift pumps use compressed gas to verticall transport liquids and slurries. Due to the lack of theoretical equations for ... -
Experimental Evaluation of Fluid Connectivity in Two‐Phase Flow in Porous Media During Drainage
; ; ; (Water Resources Research, 2022-11-04)
This study aims to experimentally investigate the possibility of combining two extended continuum theories for two‐phase flow. One of these theories considers interfacial area as a separate state variable, and the other ... -
Experimental Evidence for Shear‐Induced Melting and Generation of Stishovite in Granite at Low (<18 GPa) Shock Pressure
; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Planets, 2023-05-31)
Abstract Knowledge of the shock behavior of planetary materials is essential to interpret shock ...
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Experimental Investigation of Apollo 16 “Rusty Rock” Alteration by a Lunar Fumarolic Gas
; (Journal of Geophysical Research: Planets, 2021-02-18)
The Apollo 16 sample 66095, named “Rusty Rock”, is enriched in volatile and moderately volatile elements. The impact melt breccia is characterized by abundant Fe‐rich sulfide and chloride alteration phases, including FeS, ... -
Experimental Investigation on Static and Dynamic Bulk Moduli of Dry and Fluid-Saturated Porous Sandstones
; ; ; ; (Rock Mechanics and Rock Engineering, 2020-09-29)
Knowledge of pressure-dependent static and dynamic moduli of porous reservoir rocks is of key importance for evaluating geological setting of a reservoir in geo-energy applications. We examined experimentally the evolution ... -
Experimental Methods and Imaging for Enzymatically Induced Calcite Precipitation in a Microfluidic Cell
; ; ; ; ; (Water Resources Research, 2021-03-11)
Enzymatically induced calcite precipitation (EICP) in porous media can be used as an engineering option to achieve precipitation in the pore space, for example, aiming at a targeted sealing of existing flow paths. This is ... -
Experimental observations of aquifer storage and recovery in brackish aquifers using multiple partially penetrating wells
; ; ; (Hydrogeology Journal, 2021-04-25)
Aquifer storage and recovery systems using multiple partially penetrating wells (MPPW-ASR) can form a viable solution to the problem of freshwater buoyancy when using brackish aquifers for freshwater storage. This study ... -
Experimental study and numerical modeling of the thermo-hydro-mechanical processes in soil freezing with different frost penetration directions
; ;; ; (Acta Geotechnica, 2021-04-28)
This research work presents an experimental and numerical study of the coupled thermo-hydro-mechanical (THM) processes that occur during soil freezing. With focusing on the artificial ground freezing (AGF) technology, a ... -
Experimental study of the evolution of fault gouge in layered sand–clay sequences
Schmatz, Joyce; Vrolijk, Peter;; Giese, Steffen; Ziegler, Martin; Zee, Wouter van der (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)
This study focuses on clay smear processes during fault gouge evolution in sand-clay sequences at depths up to 2 km. A clay-rich fault gouge can dramatically lower the fault’s permeability, and prediction of this process ... -
Experimentally Induced Thermal Fatigue on Lunar and Eucrite Meteorites—Influence of the Mineralogy on Rock Breakdown
; (Journal of Geophysical Research: Planets, 2022-10-07)
Thermal fatigue has been proven to be of fundamental importance for the nature and evolution of surfaces of airless bodies in the solar system. It is a rock erosive process acting in conjunction with meteoroid bombardment. ... -
Experimente zur Produktivitätssteigerung in der Geothermie-Forschungsbohrung Groß Schönebeck 3/90
(Scientific Technical Report / Geoforschungszentrum Potsdam; 2004, 16)Der vorliegende Report fasst die wissenschaftlichen und technischen Arbeiten zur Steigerung der Produktivität von Thermalwasser in der Geothermie-Forschungsbohrung Groß Schönebeck 3/90 zusammen, die von 2002 bis 2004 ... -
Exploration of an ice-cliff grounding zone in Antarctica reveals frozen-on meltwater and high productivity
; (Communications Earth & Environment, 2021-05-25)
Ice fluxes across the grounding zone affect global ice-sheet mass loss and sea level rise. Although recent changes in ice fluxes are well constrained by remote sensing, future projections remain uncertain, because key ... -
Explorative approach to the dust evolution in binary star systems
(Univ. Berlin, 2009)This thesis discusses dust formation in binary systems, in particular for binary systems consisting of a Mira like star and a brown dwarf. A Mira-like star is an intermediate mass star in a late stage of their stellar ... -
Exploring planets and asteroids with 6DoF sensors: Utopia and realism
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; (Earth, Planets and Space, 2020-12-21)
A 6 degrees-of-freedom (6DoF) sensor, measuring three components of translational acceleration and three components of rotation rate, provides the full history of motion it is exposed to. In Earth sciences 6DoF sensors ... -
Exploring possible links between Quaternary aggradation in the Upper Rhine Graben and the glaciation history of northern Switzerland
; ; ; ; ; (International Journal of Earth Sciences, 2021-05-16)
The Quaternary filling of the Upper Rhine Graben is an excellent archive to reconstruct sediment dynamics in response to climate change, in particular related to past glaciations of the Swiss Alpine Foreland. Here, a ... -
Exploring the influence of operational parameters on the reactivity of elemental iron materials.
; Licha, T.; Scott, T. B.; Fall, M.; (Journal of hazardous materials, 2009-12-30)
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Exploring the Iron-Binding Potential of the Ocean Using a Combined pH and DOC Parameterization
; ; (Global Biogeochemical Cycles, 2020)
The major part of dissolved iron (DFe) in seawater is bound to organic matter, which prevents iron from adsorptive removal by sinking particles and essentially regulates the residence time of DFe and its availability for ...
