Crustal Scale Travel Time Prediction with the SALSA3D Framework and Machine Learning
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
The SALSA3D project aims to improve our models used in travel time prediction. The current version uses tomographic modeling for propagation through the Earth’s mantle because of the large number (order of millions) of observations of seismic phases which primarily traverse the Earth’s mantle and the ability to pose the travel time problem as a set of linear equations. However, all seismic rays traverse the crust to reach receivers at the surface and therefore models of propagation through the crust are required. Therefore, the primary motivation for this study is to explore how to increase the scope of the SALSA3D project to phases which travel primarily through the crust. In this report, we evaluate new, machine learning based and physics-based methods to model these travel times for integration into the SALSA3D framework. Our results suggest that using our existing physics-based travel time tomography method is a viable approach for the regional to global scale, but better predictive capabilities can be achieved through a neural network trained on the region of interest for near-regional offsets. We suggest future iterations of SALSA3D should incorporate machine learning tools such as Physics-Informed Neural Networks or Bayesian Neural Networks.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation
- DOE Contract Number:
- NA0003525
- OSTI ID:
- 2431496
- Report Number(s):
- SAND--2023-02288
- Country of Publication:
- United States
- Language:
- English
Similar Records
SALSA3D : a global 3D p-velocity model of the Earth's crust and mantle for improved event location.
A global 3D P-velocity model of the Earth's crust and mantle for improved event location : SALSA3D.
SALSA3D: A Tomographic Model of Compressional Wave Slowness in the Earth’s Mantle for Improved Travel-Time Prediction and Travel-Time Prediction Uncertainty
Conference
·
Tue Jun 01 00:00:00 EDT 2010
·
OSTI ID:1020482
A global 3D P-velocity model of the Earth's crust and mantle for improved event location : SALSA3D.
Conference
·
Thu Jul 01 00:00:00 EDT 2010
·
OSTI ID:1021120
SALSA3D: A Tomographic Model of Compressional Wave Slowness in the Earth’s Mantle for Improved Travel-Time Prediction and Travel-Time Prediction Uncertainty
Journal Article
·
Mon Oct 10 20:00:00 EDT 2016
· Bulletin of the Seismological Society of America
·
OSTI ID:1338342