2016 Resolution analysis by random probing
04 Feb 2021 | Contributor(s): Andreas Fichtner, Tristan van Leeuwen
We present a new method for resolution analysis in tomography, based on stochastic probing of the Hessian or resolution operators. Key properties of the method are (i) low algorithmic complexity and easy implementation, (ii) applicability to any tomographic technique, including full-waveform...
2016 Statistical and computational challenges of constraining greenhouse gas budgets
04 Feb 2021 | Contributor(s): Anna M. Michalak
Predicting future changes to the global carbon cycle (and therefore climate) and quantifying anthropogenic emissions of greenhouse gases (GHGs) both require an understanding of net GHGs emissions and uptake across a variety of spatial and temporal scales. This talk will explore some of the...
2016 Uncertainty Quantification in Computational Models of Physical Systems
04 Feb 2021 | Contributor(s): Habib Najm
Models of physical systems typically involve inputs/parameters that are determined from empirical measurements, and therefore exhibit a certain degree of uncertainty. Estimating the propagation of this uncertainty into computational model output predictions is crucial for purposes...
2016 Verification, Validation, and Predictive Capability: What's What?
04 Feb 2021 | Contributor(s): William Oberkampf
Engineering and geosciences organizations must increasingly rely on computational simulation for the design, predicted response, and performance of manmade and natural systems. Computational analysts, decision makers, and regulatory authorities who rely on simulation should have practical...
2015 ASPECT: From Benchmarking to 3D Subduction Applications
04 Feb 2021 | Contributor(s): Cedric Thieulot, Anne Glerum, Menno Fraters, Wim Spakman
ASPECT, the Advanced Solver for Problems in Earth's Convection, is an extensible open source, community supported code. The code is being applied to a broad range of problems in geodynamics. This talk will explore the community's efforts in benchmarking, implementation of...
2015 An introduction to Virtual Quake
04 Feb 2021 | Contributor(s): Kasey Schultz, John Wilson
This webinar will introduce Virtual Quake, a boundary element code that performs simulations of fault systems based on stress interactions between fault elements to understand long term statistical behavior. The webinar will cover:Downloading, installing and running Virtual...
2015 Simulating seismic wave propagation with SW4
04 Feb 2021 | Contributor(s): Anders Petersson
This webinar describes how to use the SW4 code to simulate ground motion due to earthquakes. After a brief overview of the numerical method, we describe how to set up a simulation in terms of seismic sources, the material model, visco-elastic attenuation, and topography. We also present some of...
2015 An introduction to BurnMan - a mineral physics toolkit
03 Feb 2021 | Contributor(s): Sanne Cottar, Timo Heister, Bob Myhill, Ian Rose, Cayman Unterborn
In this webinar we will introduce the extensible, open source mineral physics toolkit BurnMan. This software allows the user to calculate the elastic and thermodynamic properties of rocks, minerals, fluids and melts based on the properties of end-member phases. BurnMan is bundled with...