Ambient noise differential adjoint tomography reveals fluid-bearing rocks near active faults in Los Angeles

X Liu, GC Beroza, H Li - Nature Communications, 2023 - nature.com
Water scarcity is a pressing issue in California. We develop ambient noise differential adjoint
tomography that improves the sensitivity to fluid-bearing rocks by canceling bias caused by …

Control of slab tears and slab flat wedging on volcanism in the Alaska subduction zone

Y Hu, C Liu, Z Wang, F Zhao - Scientific Reports, 2024 - nature.com
Multistage plate subduction plays a crucial role in magmatism; however, the mechanisms by
which deep geodynamic processes govern volcanism in the Alaska subduction zone remain …

Seismic anisotropy and deep crustal deformation across Alaska

C Liu, MH Ritzwoller - Journal of Geophysical Research: Solid …, 2024 - Wiley Online Library
Based on a new seismic surface wave data set, we present a model of Alaskan crustal
seismic anisotropy that provides new insight into Alaska's geographically diverse …

Linear array double difference adjoint ambient noise tomography of the central Tanlu fault zone, eastern China

M Yan, H Yao, T Lei, S Luo… - Journal of Geophysical …, 2024 - Wiley Online Library
In response to the need for high‐resolution imaging of shallow crustal structure, we present
a linear array double‐difference (DD) adjoint tomography method, using DD Rayleigh wave …

Multi‐scale seismic imaging of the Ridgecrest, CA, region with waveform inversion of regional and dense array data

G Li, Y Ben‐Zion - Journal of Geophysical Research: Solid …, 2024 - Wiley Online Library
We develop an inversion procedure for deriving multi‐scale velocity models with waveform
inversions of earthquake and ambient noise data at multi‐frequency bands recorded by …

Constructing a 3‐D Radially Anisotropic Crustal Velocity Model for Oklahoma Using Full Waveform Inversion

S Zhang, H Zhu - Journal of Geophysical Research: Solid Earth, 2023 - Wiley Online Library
Over the past decade, the seismicity rate in the state of Oklahoma has increased
significantly, which has been linked to industrial operations, such as saltwater injection and …

Improving signal-to-noise ratios of ambient noise cross-correlation functions using local attributes

B He, H Zhu, D Lumley - Geophysical Journal International, 2024 - academic.oup.com
For seismographic stations with short acquisition duration, the signal-to-noise ratios (SNRs)
of ambient noise cross-correlation functions (CCFs) are typically low, preventing us from …

TomoATT: An open-source package for Eikonal equation-based adjoint-state traveltime tomography for seismic velocity and azimuthal anisotropy

J Chen, M Nagaso, M Xu, P Tong - arXiv preprint arXiv:2412.00031, 2024 - arxiv.org
TomoATT is an open-source software package, aiming at determining seismic velocity and
azimuthal anisotropy based on adjoint-state traveltime tomography methods. Key features of …

The 2018 Kaktovik, Alaska Earthquakes and Their Context: Insights From Seismotectonics, InSAR Geodesy, and Static Stress Changes

C Rollins, JT Freymueller, X Xue… - … and Seismicity of …, 2024 - Wiley Online Library
Summary The August 2018 M w= 6.4 and M w= 6.0 Kaktovik earthquakes were by far the
largest earthquakes ever recorded in Arctic Alaska. They struck in a geologic fold‐and‐thrust …

Control of slab tears and slab flat wedging on volcanism in the Alaska subduction zone

ZHI WANG, Y Hu, C Liu, F Zhao - 2024 - researchsquare.com
Multistage plate subduction plays a crucial role in magmatism; however, the mechanisms by
which deep geodynamic processes govern volcanism in the Alaska subduction zone remain …