Understanding the Adjoint Method in Seismology: Theory and Implementation in the Time Domain

R Abreu - Surveys in Geophysics, 2024 - Springer
The adjoint method is a popular method used for seismic (full-waveform) inversion today.
The method is considered to give more realistic and detailed images of the interior of the …

Passive surface-wave waveform inversion for source-velocity joint imaging

C Zhou, J **a, F Cheng, J Pang, X Chen, H **ng… - Surveys in …, 2022 - Springer
Reliable dispersion measurement between two seismic stations is an essential basis of
surface wave imaging. Noise source directivity has become an inescapable obstacle and a …

Full‐waveform tomography of the African Plate using dynamic mini‐batches

DP van Herwaarden, S Thrastarson… - Journal of …, 2023 - Wiley Online Library
We present a seismic model of the Africa Plate, constructed with the technique of full‐
waveform inversion. The purpose of our model is to serve as a foundation for quantitative …

CC‐FJpy: A python package for extracting overtone surface‐wave dispersion from seismic ambient‐noise cross correlation

Z Li, J Zhou, G Wu, J Wang… - Seismological …, 2021 - pubs.geoscienceworld.org
In the past two decades, seismic ambient‐noise cross correlation (CC) has been one of the
most important technologies in seismology. Usually, only the fundamental‐mode surface …

Data-adaptive global full-waveform inversion

S Thrastarson, DP Van Herwaarden… - Geophysical Journal …, 2022 - academic.oup.com
We present a novel approach to global-scale full-waveform inversion (FWI) that can reduce
computational cost by over an order of magnitude, compared to previously published …

REVEAL: A global full‐waveform inversion model

S Thrastarson, DP van Herwaarden… - Bulletin of the …, 2024 - pubs.geoscienceworld.org
We present REVEAL, a global‐scale, transversely isotropic full‐waveform inversion model.
REVEAL builds upon the earlier construction of the long‐wavelength Earth (LOWE) model …

Connecting beamforming and kernel-based noise source inversion

DC Bowden, K Sager, A Fichtner… - Geophysical Journal …, 2021 - academic.oup.com
Beamforming and backprojection methods offer a data-driven approach to image noise
sources, but provide no opportunity to account for prior information or iterate through an …

Global P‐Wave and Joint S‐Wave Tomography in the North Pacific: Implications for Slab Geometry and Evolution

Y Fu, Z Wang, M Obayashi - Journal of Geophysical Research …, 2023 - Wiley Online Library
We presented two high‐resolution, three‐dimensional (3D) global P‐and joint S‐wave
velocity models of the whole mantle with a particular focus on the North Pacific realm using …

SeisNoise. jl: Ambient seismic noise cross correlation on the CPU and GPU in Julia

T Clements, MA Denolle - Seismological research letters, 2021 - pubs.geoscienceworld.org
We introduce SeisNoise. jl, a library for high‐performance ambient seismic noise cross
correlation, written entirely in the computing language Julia. Julia is a new language, with …

Adjoint tomography of ambient noise data and teleseismic P waves: Methodology and applications to central California

K Wang, Y Yang, C Jiang, Y Wang… - Journal of …, 2021 - Wiley Online Library
Adjoint tomography has been recently applied to ambient seismic noise and teleseismic P
waves separately to unveil fine‐scale lithospheric structures beyond the resolving ability of …