Results 71 to 80 of about 7,682 (206)

Near‐Field Acoustic Imaging Using Fiber‐Optic Distributed Acoustic Sensing and Beamforming Techniques

Advanced Science, Volume 13, Issue 6, 30 January 2026.
This work introduces a beamforming‐based method to generate acoustic images from fiber‐optic distributed acoustic sensing (DAS) data. By performing 2D scanning around the sensing fiber, the approach enables near‐field imaging and localization of acoustic sources, even in regions distant from the fiber. A data‐driven DAS channel selection improves image
Marcelo A. Soto, Diego Badillo‐San‐Juan   +1 more
wiley   +1 more source

Application of microseismic monitoring in the optimization of control strategy for roofs composed of composite hard sandstone masses

Meitian dizhi yu kantan
Objective With a gradual increase in the coal mining depth in China, the movement of overlying thick and hard rock layers exerts increasingly complex impacts on the mine pressure. Methods In the Ordos area, the overburden of the mining face of most mines
Yin ZHANG, Jiajun LI, Qian ZHAO, Chenchen YANG, Jiaqi LIU, Yu ZHOU   +5 more
doaj   +1 more source

Research on microseismic signal denoising based on variational mode decomposition and wavelet energy entropy

矿业科学学报, 2019
Microseismic monitoring technology is widely used in such fields as mining engineering,petroleum and gas exploitation,and safety monitoring.In order to solve the problem of random noise in microseismic signals collected by microseismic monitoring,a ...
Sun Yuan, Yang Feng, Zheng Jing, Zhang Hao, Xu Maoxuan   +4 more
doaj   +1 more source

Full-waveform Based Microseismic Event Detection and Signal Enhancement: The Subspace Approach [PDF]

, 2013
Microseismic monitoring has proven to be an invaluable tool for optimizing hydraulic fracturing stimulations and monitoring reservoir changes. The signal to noise ratio (SNR) of the recorded microseismic data varies enormously from one dataset to another,
Kuleli, Huseyin Sadi, Song, Fuxian, Toksoz, M. Nafi, Warpinski, Norm R.   +3 more
core  

Urban Basin Structure Imaging in Northern Los Angeles From Ambient Noise Differential Adjoint Tomography

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract We employ differential adjoint tomography to suppress the effects of uneven noise sources and image the upper crust S wave velocity structure of San Gabriel Basin, Chino Basin and San Bernardino Basin in the northern Los Angeles. A Sequential Subdomain Inversion strategy is implemented to address regional imbalance of sensitivity kernel ...
Zhanwen Li, Xin Liu, Xi Wang, Lina Gao
wiley   +1 more source

What moved where?: The impact of velocity uncertainty on microseismic location and moment-tensor inversion [PDF]

, 2017
With the rise of unconventional resources, microseismic monitoring is becoming increasingly important because of its cost-effectiveness. This has led to significant research activity on how best to locate events and characterize their moment tensors ...
Fehler, Mike, Malcolm, Alison, Poliannikov, Oleg V.   +2 more
core   +1 more source

Induced Earthquakes Inhibited by Shear Thickening Fluid

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Induced seismicity is an inevitable consequence of subsurface resource development. Public concerns have been raised in cases where a surge in felt or damaging earthquakes has occurred because of industrial activity. The effective mitigation of induced earthquakes remains a major challenge despite the employment of several strategies. Here, we
Lu Wang, Yusuke Mukuhira, Yasuo Yabe, Sando Sawa, Jun Muto   +4 more
wiley   +1 more source

Full-waveform Based Complete Moment Tensor Inversion and Stress Estimation from Downhole Microseismic Data for Hydrofracture Monitoring [PDF]

, 2011
Downhole microseismics has gained increasing popularity in recent years as a way to characterize hydraulic fracturing and to estimate in-situ stress state.
Song, Fuxian, Toksoz, M. Nafi
core  

Seismic arrival enhancement through the use of noise whitening [PDF]

, 2017
A constant feature in seismic data, noise is particularly troublesome for passive seismic monitoring where noise commonly masks microseismic events. We propose a statistics-driven noise suppression technique that whitens the noise through the calculation
Belouchrani, Bensen, Birnie, Claire Birnie, Doug Angus, Forghani-Arani, Forghani-Arani, Gambino, Gutenberg, Hom, Kit Chambers, Maxwell, Maxwell, Oye, Roach, Roux, Scharf, Schorlemmer, Staněk, Wang   +19 more
core   +1 more source

Study on damage and failure characteristics of loaded gas‐bearing rock–coal–rock combination structures

Deep Underground Science and Engineering, Volume 4, Issue 4, Page 800-815, December 2025.
The influence of gas on the instability and failure of rock–coal–rock combinations is considered. The damage characteristics of gas‐bearing rock–coal–rock combinations under different confining pressures, axial loading rates, and gas are revealed. A constitutive model for gas‐bearing rock–coal–rock damage considering gas is established.
Feng Du, Kai Wang, Wanyu Yang, Jiazhi Sun, Xiyang Fang, Yiyang Zhang, Longyong Shu, Liang Wang, Jiaxu Zhou   +8 more
wiley   +1 more source