Results 131 to 140 of about 27,395 (224)

Robust seismic velocity change estimation using ambient noise recordings

, 2016
We consider the problem of seismic velocity change estimation using ambient noise recordings. Motivated by [23] we study how the velocity change estimation is affected by seasonal fluctuations in the noise sources. More precisely, we consider a numerical
Daskalakis, E., Evangelidis, C. P., Garnier, J., Melis, N. S., Papanicolaou, G., Tsogka, C.   +5 more
core   +1 more source

A Penalty Function Promoting Sparsity Within and Across Groups

, 2016
We introduce a new weakly-convex penalty function for signals with a group behavior. The penalty promotes signals with a few number of active groups, where within each group, only a few high magnitude coefficients are active.
Bayram, İlker, Bulek, Savaşkan
core   +1 more source

Monitoring seismic velocity changes in the Dongtan Coal Mine using ambient noise correlationKey points

Earthquake Science
This study analyzed ambient seismic noise using the MSNoise package to monitor temporal changes in the underground seismic wave velocity in Mining Area 6 of the Dongtan Coal Mine in China.
Chao Kong, Kai Zhan, Xiaotao Wen, Ping Song, Lianhai Zhang, Hanying Ding   +5 more
doaj   +1 more source

Distributed Acoustic Sensing of Urban Telecommunication Cables for Subsurface Tomography

Applied Sciences
With the continuous development of cities and the increasing utilization of underground space, ambient noise seismic imaging has become an essential approach for exploring and monitoring the urban subsurface.
Yanzhe Zhang, Cai Liu, Jing Li, Qi Lu
doaj   +1 more source

High-performance CPU-GPU heterogeneous computing method for 9-component ambient noise cross-correlation

Earthquake Research Advances
Ambient noise tomography is an established technique in seismology, where calculating single- or nine-component noise cross-correlation functions (NCFs) is a fundamental first step.
Jingxi Wang, Weitao Wang, Chao Wu, Lei Jiang, Hanwen Zou, Huajian Yao, Ling Chen   +6 more
doaj   +1 more source

Ambient seismic noise Rayleigh wave tomography for the Pannonian basin [PDF]

, 2013
Gráczer, Zoltán, Győri, Erzsébet, Szanyi, Gyöngyvér   +2 more
core   +1 more source

Nondestructive testing of railway embankments by measuring multi-modal dispersion of surface waves induced by high-speed trains with linear geophone arrays

Seismica
To effectively address engineering challenges and risks, it is crucial to characterize mechanical properties of near-surface environments. The Multichannel Analysis of Surface Waves (MASW) has proven to be a valuable active seismic imaging technique by ...
José Cunha Teixeira, Ludovic Bodet, Marine Dangeard, Alexandrine Gesret, Amélie Hallier, Agnès Rivière, Audrey Burzawa, Julio José Cárdenas Chapellín, Marie Fonda, Ramon Sanchez Gonzalez, Amine Dhemaied, Joséphine Boisson Gaboriau   +11 more
doaj   +1 more source

A scalable algorithm for cross-correlations of compressed ambient seismic noise

SEG Technical Program Expanded Abstracts 2019, 2019
Companies and academic geophysicists are increasingly collecting continuous seismic data on denser arrays, and are looking to a variety of lossy compression methods to store and quickly access this data. Some researchers turn to ambient noise interferometry for low-cost near-surface imaging to avoid to cost and permitting required for active source ...
openaire   +3 more sources

Numerical modeling of ambient noise seismic interferometry

SEG Technical Program Expanded Abstracts 2016, 2020
Simisola Arogundade, Wayne Pennington, Roger Turpening, Roohollah Askari   +3 more
openaire   +3 more sources

Monitoring southwest Greenland's ice sheet melt with ambient seismic noise. [PDF]

Sci Adv, 2016
Mordret A, Mikesell TD, Harig C, Lipovsky BP, Prieto GA.   +4 more
europepmc   +1 more source