56 citations · 247 across the 13 of their papers we have counts for
13 papers
An Extension to the Procedure for Developing Uncertainty-Consistent Shear Wave Velocity Profiles from Inversion of Experimental Surface Wave Dispersion Data
Joseph P. Vantassel, Brady R. Cox
Measurements of shear wave velocity (Vs) with uncertainty are critical for site-specific probabilistic seismic hazard studies. However, rigorously quantifying the uncertainty in Vs…
AutoHVSR: a machine-learning-supported algorithm for the fully-automated processing of horizontal-to-vertical spectral ratio measurements
Joseph P. Vantassel, Andrew C. Stolte, Liam M. Wotherspoon +1
This work proposes the AutoHVSR algorithm that allows for fully-automated processing of horizontal-to-vertical spectral ratio (HVSR) measurements, including those with zero, one, o…
Subsurface Imaging Dataset Acquired at the Garner Valley Downhole Array Site using a Dense Network of Three-Component Nodal Stations
Joseph P. Vantassel, Jodie A. Crocker, Brady R. Cox +1
There is a growing need to characterize the engineering material properties of the shallow subsurface in three-dimensions for advanced engineering analyses. However, imaging the ne…
GNS: A generalizable Graph Neural Network-based simulator for particulate and fluid modeling
Krishna Kumar, Joseph Vantassel
We develop a PyTorch-based Graph Network Simulator (GNS) that learns physics and predicts the flow behavior of particulate and fluid systems. GNS discretizes the domain with nodes…
DAS for 2D MASW Imaging: A Case Study on the Benefits of Flexible Sub-Array Processing
Michael B. S. Yust, Brady R. Cox, Joseph P. Vantassel +1
Distributed acoustic sensing (DAS) is a relatively new technology for recording stress wave propagation, with promising applications in both engineering and geophysics. DAS's abili…
Mapping Depth to Bedrock, Shear Stiffness, and Fundamental Site Period at CentrePort, Wellington using Surface Wave Methods: Implications for Local Seismic Site Amplification
Joseph P. Vantassel, Brady R. Cox, Liam Wotherspoon +1
Wellington's port (CentrePort) experienced significant damage from the 7.8 Kaikōura earthquake as a result of soil liquefaction, lateral spreading, and shaking-induced damage…
A Frequency-Velocity CNN for Developing Near-Surface 2D Vs Images from Linear-Array, Active-Source Wavefield Measurements
Aser Abbas, Joseph P. Vantassel, Brady R. Cox +2
This paper presents a frequency-velocity convolutional neural network (CNN) for rapid, non-invasive 2D shear wave velocity (Vs) imaging of near-surface geo-materials. Operating in…
Minority Report: A Graph Network Oracle for In Situ Visualization
Krishna Kumar, Paul Navrátil, Andrew Solis +1
In situ visualization techniques are hampered by a lack of foresight: crucial simulation phenomena can be missed due to a poor sampling rate or insufficient detail at critical time…
Extracting High-Resolution, Multi-Mode Surface Wave Dispersion Data from Distributed Acoustic Sensing Measurements using the Multichannel Analysis of Surface Waves
Joseph P. Vantassel, Brady R. Cox, Peter G. Hubbard +1
We rigorously assess the potential for extracting high-resolution, multi-mode surface wave dispersion data from distributed acoustic sensing (DAS) measurements using active-source…
HVSRweb: An Open-Source, Web-Based Application for Horizontal-to-Vertical Spectral Ratio Processing
Joseph P. Vantassel, Brady R. Cox, Dana M. Brannon
The horizontal-to-vertical spectral ratio (HVSR) method has become an increasingly popular tool for developing a quick and reliable estimate of a site's fundamental natural frequen…
Using Convolutional Neural Networks to Develop Starting Models for 2D Full Waveform Inversion
Joseph P. Vantassel, Krishna Kumar, Brady R. Cox
Non-invasive subsurface imaging using full waveform inversion (FWI) has the potential to fundamentally change engineering site characterization by enabling the recovery of high res…
A Procedure for Developing Uncertainty-Consistent Vs Profiles from Inversion of Surface Wave Dispersion Data
Joseph P. Vantassel, Brady R. Cox
Non-invasive surface wave methods have become a popular alternative to traditional invasive forms of site-characterization for inferring a site's subsurface shear wave velocity (Vs…
SWinvert: A workflow for performing rigorous surface wave inversions
Joseph P. Vantassel, Brady R. Cox
SWinvert is a workflow developed at The University of Texas at Austin for the inversion of surface wave dispersion data. SWinvert encourages analysts to investigate inversion uncer…