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See the release notes for details.Ģ4 June 2020 | Article published on modeling earthquake cycles on heterogeneous faults using the CNS microphysical model: Parallelized for distributed memory systems (MPI)Ģ2 July 2020 | QDYN version 2.3 has arrived! In this release we improved the output modules, making them more consistent across simulation features and paving the way for HDF5 support. Parallelized for shared memory systems (OpenMP) MATLAB and Python wrappers, and graphic output display utilities Non-planar faults (currently limited to variable dip, rectangular elements) Slow and fast, aseismic and seismic slip transientsĭynamic weakening (thermal pressurization) Microphysically based frictional model ( Chen-Niemeijer-Spiers model) Rate-and-state friction, with velocity cut-offs, aging and slip laws To get started with QDYN, see the documentation. It is equipped with user-friendly MATLAB and Python interfaces and graphical output utilities.
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QDYN implements adaptive time stepping, shared-memory parallelization, and can deal with multi-scale earthquake cycle simulations with fine details in both time and space. The medium surrounding the fault is linear, isotropic and elastic, and may be uniform or (in 2D) contain a damaged layer. In 3D it handles free surface effects in a half-space, including normal stress coupling. Loading is controlled by remote displacement, steady creep or oscillatory load. QDYN includes various forms of rate-and-state friction and state evolution laws, and handles non-planar fault geometry in 3D and 2D media, as well as spring-block simulations.
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QDYN is a boundary element software to simulate earthquake cycles (seismic and aseismic slip on tectonic faults) under the quasi-dynamic approximation (quasi-static elasticity combined with radiation damping) on faults governed by rate-and-state friction and embedded in elastic media.
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Whether you are exploring the geo sciences, or you just want to find out if you felt that last quake, this app will keep you up to date with the latest Earthquake information.QDYN A Quasi-DYNamic earthquake simulator This latest edition brings new features and updates to this modern classic. Started in 2003 as a desktop application, it has become a widely adopted standard for video presentations and visualizations of Earthquake information. This edition of Earthquake 3D represents a third generation of this very popular computer program. This database (updated periodically) is built-in to Earthquake 3D and is available even when you are off-line. The Atlas database shows over 4000 years of Historic Earthquake information. In addition to providing several live sources of current Earthquake information, an Atlas database is also included. Filter Earthquakes by magnitude and age with slider controls. Uses "point and drag" to position and spin the Earth. Can import up to four external Earth images that are supplied by the user. Earthquake details include Local Maps, Local News, and Advanced Seismic Information. Tap on individual indicator flags to show details for each Earthquake. Individual quake indicator flags that show magnitude or depth. Current worldwide Volcano activity display. Data from USGS, European EMSC, British Geological Survey, and New Zealand Geonet. Includes 4000+ years of Historic Earthquake information. Control Speed, Decay, and Sound of Earthquake sequencer loops. A Sequencer that shows Earthquakes as they occurred using animation loops. Solid and wire frame 3D views with transparent Earth ability. Eight different Earth display types that include population and tectonic plate maps. Go where no seismogram has gone before with a fascinating and mesmerizing look at the worlds Earthquakes. Earthquake 3D uses animated graphics to show you the "big picture" and visualize large amounts of Earthquake data quickly and easily. Zoom and spin your way around the world with this fully immersive 3D Earthquake display app. Current version: 3.97, last update: 2 years ago