Seismic tomography and the assessment of uncertainty

N Rawlinson, A Fichtner, M Sambridge… - Advances in …, 2014‏ - Elsevier
Seismic tomography is a powerful tool for illuminating Earth structure across a range of
scales, but the usefulness of any image that is generated by this method is dependent on …

[HTML][HTML] Tracking transient changes in the plumbing system at Campi Flegrei Caldera

G Giacomuzzi, C Chiarabba, F Bianco… - Earth and Planetary …, 2024‏ - Elsevier
Increase in seismicity, gas emission and ground uplift are symptoms of unrest in Quaternary
calderas. Since the raising of the alert level in 2012, their continuous increase in the Campi …

3-D Bayesian variational full waveform inversion

X Zhang, A Lomas, M Zhou, Y Zheng… - Geophysical Journal …, 2023‏ - academic.oup.com
Seismic full-waveform inversion (FWI) provides high resolution images of the subsurface by
exploiting information in the recorded seismic waveforms. This is achieved by solving a …

On the use of sensitivity tests in seismic tomography

N Rawlinson, W Spakman - Geophysical Journal International, 2016‏ - academic.oup.com
Sensitivity analysis with synthetic models is widely used in seismic tomography as a means
for assessing the spatial resolution of solutions produced by, in most cases, linear or …

Bayesian geophysical inversion using invertible neural networks

X Zhang, A Curtis - Journal of Geophysical Research: Solid …, 2021‏ - Wiley Online Library
Constraining geophysical models with observed data usually involves solving nonlinear and
nonunique inverse problems. Neural mixture density networks (MDNs) provide an efficient …

Seismic tomography using variational inference methods

X Zhang, A Curtis - Journal of Geophysical Research: Solid …, 2020‏ - Wiley Online Library
Seismic tomography is a methodology to image the interior of solid or fluid media and is
often used to map properties in the subsurface of the Earth. In order to better interpret the …

3-D Monte Carlo surface wave tomography

X Zhang, A Curtis, E Galetti… - Geophysical Journal …, 2018‏ - academic.oup.com
Seismic surface wave tomography is a tried and tested method to reveal the subsurface
structure of the Earth. However, the conventional 2-step scheme of inverting first for 2-D …

Bayesian joint inversion of controlled source electromagnetic and magnetotelluric data to image freshwater aquifer offshore New Jersey

D Blatter, K Key, A Ray, C Gustafson… - Geophysical Journal …, 2019‏ - academic.oup.com
Joint inversion of multiple electromagnetic data sets, such as controlled source
electromagnetic and magnetotelluric data, has the potential to significantly reduce …

Geophysical imaging using trans-dimensional trees

R Hawkins, M Sambridge - Geophysical Journal International, 2015‏ - academic.oup.com
In geophysical inversion, inferences of Earth's properties from sparse data involve a trade-off
between model complexity and the spatial resolving power. A recent Markov chain Monte …

Bayesian geophysical inversion with trans-dimensional Gaussian process machine learning

A Ray, D Myer - Geophysical Journal International, 2019‏ - academic.oup.com
SUMMARY A key aspect of geophysical inversion is the ability to model the earth with a low
dimensional representation. There exist various approaches to solve the inverse problem …