56 citations · 244 across the 13 of their papers we have counts for
13 papers
An Open-Access Database of Active-source and Passive-wavefield DAS and Nodal Station Measurements at the Newberry Florida Site
Aser Abbas, Brady R. Cox, Khiem T. Tran +2
This paper documents a comprehensive subsurface imaging experiment using stress waves in Newberry, Florida, at a site known for significant spatial variability, karstic voids, and…
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…
Using explainability to design physics-aware CNNs for solving subsurface inverse problems
Jodie Crocker, Krishna Kumar, Brady R. Cox
We present a novel method of using explainability techniques to design physics-aware neural networks. We demonstrate our approach by developing a convolutional neural network (CNN)…
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…
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…
Site characterization at Treasure Island and Delaney Park downhole arrays by heterogeneous data assimilation
Elnaz Seylabi, Mohamad M. Hallal, Brady R. Cox
This article extends a recently proposed heterogeneous data assimilation technique for site characterization to estimate compression and shear wave velocity (Vp and Vs, respectivel…
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…