Earthquake focal mechanisms with distributed acoustic sensing

J Li, W Zhu, E Biondi, Z Zhan - Nature Communications, 2023 - nature.com
Earthquake focal mechanisms provide critical in-situ insights about the subsurface faulting
geometry and stress state. For frequent small earthquakes (magnitude< 3.5), their focal …

An upper-crust lid over the Long Valley magma chamber

E Biondi, W Zhu, J Li, EF Williams, Z Zhan - Science Advances, 2023 - science.org
Geophysical characterization of calderas is fundamental in assessing their potential for
future catastrophic volcanic eruptions. The mechanism behind the unrest of Long Valley …

Earthquake magnitude with DAS: A transferable data‐based scaling relation

J Yin, W Zhu, J Li, E Biondi, Y Miao… - Geophysical …, 2023 - Wiley Online Library
Abstract Distributed Acoustic Sensing (DAS) is a promising technique to improve the rapid
detection and characterization of earthquakes. Previous DAS studies mainly focus on the …

Thousand‐kilometer DAS array reveals an uncatalogued magnitude‐5 dynamically triggered event after the 2023 Turkey earthquake

Q Zhai, Z Zhan, JA Chavarria - Journal of Geophysical …, 2024 - Wiley Online Library
Large earthquakes can trigger smaller seismic events, even at significant distances. The
process of earthquake triggering offers valuable insights into the evolution of local stress …

Locating clustered seismicity using Distance Geometry Solvers: applications for sparse and single-borehole DAS networks

K Tuinstra, F Grigoli, F Lanza, AP Rinaldi… - Geophysical Journal …, 2024 - academic.oup.com
The determination of seismic event locations with sparse networks or single-borehole
systems remains a significant challenge in observational seismology. Leveraging the …

Real‐Data Testing of Distributed Acoustic Sensing for Offshore Earthquake Early Warning

J Yin, MA Soto, J Ramírez, V Kamalov… - The Seismic …, 2023 - pubs.geoscienceworld.org
We present a real‐data test for offshore earthquake early warning (EEW) with distributed
acoustic sensing (DAS) by transforming submarine fiber‐optic cable into a dense seismic …

PPMGS: An Efficient and Effective Solution for Distributed Privacy-Preserving Semi-Supervised Learning

Z Li, C Li, Z Li, J Weng, F Huang, Z Zhou - Information Sciences, 2024 - Elsevier
Recently, distributed semi-supervised learning has attracted increasing research attention
due to its tremendous practical value. A promising distributed semi-supervised learning …

Performance enhancement of deep neural network using fusional data assimilation and divide-and-conquer approach; case study: earthquake magnitude calculation

R Esmaeili, R Kimiaefar, A Hajian… - Neural Computing and …, 2024 - Springer
The presence of" ill-posed samples" specifically in low-volume datasets leads to accuracy
decrement in the learning procedure and the generalization of neural networks. Such …

HD‐TMA: A New Fast Template Matching Algorithm Implementation for Linear DAS Array Data and Its Optimization Strategies

H Lv, X Zeng, G Zhang, Z Song - Seismological …, 2024 - pubs.geoscienceworld.org
Distributed acoustic sensing (DAS) technology, combined with existing telecom fiber‐optic
cable, has shown great potential in earthquake monitoring. The template matching algorithm …

A semblance-based microseismic event detector for DAS data

J Porras, D Pecci, GM Bocchini… - Geophysical Journal …, 2024 - academic.oup.com
Distributed acoustic sensing (DAS) is becoming increasingly popular in microseismic
monitoring operations. This data acquisition technology converts fibre-optic cables into …