Serpentine: Finite Difference Methods for Wave Propagation in Second Order Formulation

Petersson, N. Anders; Sjögreen, Björn

doi:10.2172/1046802

Cited by 2 publications

(2 citation statements)

References 26 publications

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“…On the scale of California we used the LLNL-developed WPP finite difference code (Petersson and Sjogreen, 2011) to compute the ground motions covering the entire SF1906 rupture. WPP is an open-source computer program for simulating seismic wave propagation in Cartesian geometries based on a second-order node-centered scheme (Petersson, 2012). This calculation used the USGS geologic/seismic (version 8.3.0, detailed + extended) model to account for known 3D structure (Aagaard et al, 2008), including viscoelastic modeling of anelastic attenuation.…”

Section: Wpp Simulations Of the 1906 San Francisco Earthquakementioning

confidence: 99%

LLNL-Generated Content for the California Academy of Sciences, Morrison Planetarium Full-Dome Show: Earthquake

Rodgers¹,

Petersson²,

Morency³

et al. 2012

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Section: Wpp Simulations Of the 1906 San Francisco Earthquakementioning

confidence: 99%

LLNL-Generated Content for the California Academy of Sciences, Morrison Planetarium Full-Dome Show: Earthquake

Rodgers¹,

Petersson²,

Morency³

et al. 2012

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“…WPP is an open source computer program. The source code, user reference guide and associated files can be obtained for free from the project website (Petersson, 2010).…”

Section: The Wpp Anelastic Wave Propagation Codementioning

confidence: 99%

Pre-Shot Simulations of Far-Field Ground Motions for the Source Physics Experiment (SPE) Explosions at the Climax Stock, Nevada National Security Site

Rodgers¹,

Wagoner²,

Petersson³

et al. 2010

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The Source Physics Experiment (SPE) will involve a series of explosions in various geologic and emplacement conditions to validate numerical simulation methods to predict behavior of seismic wave excitation and propagation for nuclear test monitoring. The first SPE's currently underway involve explosions in the Climax Stock (granitic geology) at the Nevada National Security Site (NNSS). Detailed geologic data and published material properties for the major lithologic units of the NNSS and surrounding region were used to build three-dimensional models for seismic wave propagation simulations.The geologic structure near the SPE shot point is quite varied including granitic, carbonate, tuff and alluvium lithologies. We performed preliminary ground motion simulations for a near-source domain covering 8 km x 8 km at the surface centered on the shot point to investigate various source and propagation effects using WPP, LLNL's anelastic seismic wave finite difference code. Simulations indicate that variations in wave propagation properties of the sub-surface will generate strongly path-dependent response once the energy has left the relatively small granitic geology of the near-surface Climax Stock near the SPE shot point. Rough topography to the north and west of SPE shot point causes additional complexity in the signals including energy on the transverse components. Waves propagate much faster through the granitic and carbonate formations and slower through the tuff and alluvium. Synthetic seismograms for a pure explosion

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Serpentine: Finite Difference Methods for Wave Propagation in Second Order Formulation

Cited by 2 publications

References 26 publications

LLNL-Generated Content for the California Academy of Sciences, Morrison Planetarium Full-Dome Show: Earthquake

LLNL-Generated Content for the California Academy of Sciences, Morrison Planetarium Full-Dome Show: Earthquake

Pre-Shot Simulations of Far-Field Ground Motions for the Source Physics Experiment (SPE) Explosions at the Climax Stock, Nevada National Security Site

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