A5021415159- Groundwater flow and contamination studies
- Hydrology and Watershed Management Studies
- CO2 Sequestration and Geologic Interactions
- Corporate Governance and Law
- Groundwater and Isotope Geochemistry
- Rock Mechanics and Modeling
- Reservoir Engineering and Simulation Methods
- Geological Modeling and Analysis
- Seismic Imaging and Inversion Techniques
- Methane Hydrates and Related Phenomena
- Hydraulic Fracturing and Reservoir Analysis
- Landslides and related hazards
- Corporate Governance and Management
- Seismic Waves and Analysis
- Advanced Optical Network Technologies
- Geotechnical Engineering and Underground Structures
- Pediatric Pain Management Techniques
- Hydrocarbon exploration and reservoir analysis
- Geology and Paleoclimatology Research
- Scientific Computing and Data Management
- Infrastructure Maintenance and Monitoring
- Traffic and Road Safety
- Lattice Boltzmann Simulation Studies
- Cardiac, Anesthesia and Surgical Outcomes
- Credit Risk and Financial Regulations
Helmholtz Centre for Environmental Research
2013-2024
University of Wisconsin–Oshkosh
2002-2024
University of Bern
2012
Nokia (Australia)
2008
Siemens (Germany)
2007
Nokia (Germany)
2007
University of Göttingen
2004
Deutsche Bank (Germany)
2003
University of Münster
1999
Fischer (Germany)
1999
Abstract. Most large-scale hydrologic models fall short in reproducing groundwater head dynamics and simulating transport process due to their oversimplified representation of flow. In this study, we aim extend the applicability mesoscale Hydrologic Model (mHM v5.7) subsurface hydrology by coupling it with porous media simulator OpenGeoSys (OGS). The two are one-way coupled through model interfaces GIS2FEM RIV2FEM, which grid-based fluxes recharge river–groundwater exchange generated mHM...
We present a new coupling framework named FINAM (short for "FINAM Is Not A Model"). is designed to facilitate the of models that were developed as stand-alone tools in first place, and enable seamless model extensions by wrapping existing into components with well-specified interfaces. Although established solutions such YAC (Hanke et al., 2016), ESMF (Collins 2005), or OASIS (Craig 2017) focus on highly parallel workflows, complex data processing, regridding, prioritizes usability...
Abstract The present paper gives an overview of the GeomInt project “Geomechanical integrity host and barrier rocks—experiment, modelling analysis discontinuities” which has been conducted from 2017–2020 within framework “Geo:N Geosciences for Sustainability” program. research concept collaborative is briefly introduced followed by a summary most important outcomes. puts geological discontinuities into centre investigations—as these belong to interesting critical elements any subsurface...
Abstract Success of our ongoing energy transition largely depends on subsurface exploitation. The can act as a “battery” to store dense fluids such hydrogen, or “host” sequester unwanted substances carbon dioxide radioactive waste. On the other hand, these operations cause pressure and/or temperature change and induce various (or cyclical) loadings surrounding formations. Their operational safety crucially hinges upon integrity. most imminent risk is nucleation cracks that lead loss...
Abstract. We offer a versatile workflow to convert geological models built with the ParadigmTM GOCAD© (Geological Object Computer Aided Design) software into open-source VTU (Visualization Toolkit unstructured grid) format for usage in numerical simulation models. Tackling relevant scientific questions or engineering tasks often involves multidisciplinary approaches. Conversion workflows are needed as way of communication between diverse tools various disciplines. Our approach offers an...
Abstract In the framework of STIMTEC and STIMTEC-X hydraulic stimulation experiments at Reiche Zeche mine, Freiberg (Germany), we installed acoustic emission (AE) sensors for recording picoseismicity both conventionally using pneumatic coupling experimentally like a hydrophone, i.e. were placed in borehole without further system or cementing. We investigate performance measures hydrophone-like (HAE) such as frequency bandwidth, sensitivity, first motion polarity, placement quality to assess...
We propose a new benchmark for the simulation of thermal convection in 3D faulted system. Linear stability analysis is adopted to estimate critical viscous-dependent Rayleigh number. These results are used quantify reliability OpenGeoSys-5, Golem and FEFLOW simulators accounting onset conditions predicting long-term behavior convective flow patterns. By comparing analytical numerical results, we can conclude that proposed methodology expressions be applied as case any study involving coupled...
Abstract. We offer a versatile workflow to convert geological models built with the software Paradigm™ GOCAD© into open-source VTU format for usage in numerical simulation models. Tackling relevant scientific questions or engineering tasks often involves multidisciplinary approaches. Conversion workflows are needed as way of communication between diverse tools various disciplines. Our approach offers an open-source, platform independent, robust, and comprehensible method that is potentially...
This paper presents and discusses issues of multi-domain, end-to-end service provisioning in Ethernet core networks from the perspective 100GET-E3 project, a German subproject under umbrella CELTIC research initiative 100GET (ldquo100 Gigabit Technologiesrdquo). We propose several multi-domain scenarios IEEEpsilas Provider Backbone Bridging Traffic Engineering (PBB-TE) networks.
Abstract. Most of the current large scale hydrological models do not contain a physically-based groundwater flow component. The main difficulties in large-scale modeling include efficient representation unsaturated zone flow, characterization dynamic groundwater-surface water interaction and numerical stability while preserving complex physical processes high resolution. To address these problems, we propose highly-scalable coupled hydrologic model (mHM#OGS) based on integration two...
One important aspect of implementation deep underground radioactive waste repositories is the physical characterization backfill material which fills voids between containers and ambient host rock. The Mont Terri Rock Laboratory, located in NW Switzerland operated by swisstopo, an international subterranean research facility offers a perfect environment to carry out experimental test phases on such barrier systems. In this study, we report eight years ultrasonic monitoring bentonite...
Abstract Regional groundwater modelling can provide decision-makers and scientists with valuable information required for the sustainable use protection of resources in future. In order to assess manage impact climate change on regional aquifer systems, numerical models are which represent subsurface structures aquifers aquitards 3D at scale beyond most efficient way. A workflow clearly generate these structural representations from a variety data sources is introduced, applying open-source...