Results 231 to 240 of about 77,948 (279)

Distributed acoustic sensing in seismology

Optical Fiber Sensors Conference 2020 Special Edition, 2021
We review our recent work on chirped-pulse distributed acoustic sensing and its use for the characterization of teleseismic and microseismic activity. We show that this tool may offer impressive new capabilities in the field of seismology, particularly in underwater scenarios.
Miguel Gonzalez-Herraez, Maria R. Fernandez-Ruiz, Regina Magalhaes, Luis Costa, Hugo F. Martins, Andrés Garcia-Ruiz, Sonia Martin-Lopez, Ethan Williams, Zhongwen Zhan, Roel Vantilho   +9 more
openaire   +1 more source

Monitoring industrial acoustics with distributed acoustic sensing

The Journal of the Acoustical Society of America, 2022
True-phase distributed acoustic sensing (DAS), a technique which uses low-power laser pulses to monitor along-fiber strain in optical cable, has proven useful in many geophysical research areas, including down-hole monitoring in oil/gas extraction, near-surface characterization, detecting and locating regional and global earthquakes, urban monitoring ...
Derrick Chambers, Peiyao Li, Harpreet Sethi, Jeffery Shragge   +3 more
openaire   +1 more source

Distributed Acoustic Sensing in Seismology

27th International Conference on Optical Fiber Sensors, 2022
We review the use of Distributed Acoustic Sensing for the characterization of tele-seismic and micro-seismic activity. We show that this tool may offer impressive new capabilities in the field of seismology, particularly in underwater scenarios.
Miguel Gonzalez-Herraez, Maria R. Fernandez-Ruiz, Regina Magalhaes, Luis Costa, Hugo F. Martins, Carlos Becerril, Sonia Martin-Lopez, Ethan Williams, Zhongwen Zhan, Roel Vantilho, Arantza Ugalde, Antonio Villaseñor, Cesar Ranero   +12 more
openaire   +1 more source

On the sensitivity of distributed acoustic sensing

Optics Letters, 2016
In distributed acoustic sensing (DAS) an optical fiber is transformed into an array of thousands of "virtual microphones." Most current DAS methodologies are based on coherent interference of Rayleigh backscattered light and thus are prone to signal fading. Hence, the sensitivities of the "microphones" fluctuate randomly along the fiber.
Haniel, Gabai, Avishay, Eyal
openaire   +2 more sources

The intelligent distributed acoustic sensing

SPIE Proceedings, 2014
Distributed Acoustic Sensing (DAS) technology has progressed rapidly from being capable of event detection only to faithfully capturing the full acoustic signal (amplitude, frequency and phase) at all points along the sensing fibre. In this paper we demonstrate the performance of one such sensor and describe how the unique nature of DAS data enables a ...
Tom R. Parker, Arran Gillies, Sergey V. Shatalin, Mahmoud Farhadiroushan   +3 more
openaire   +1 more source

Distributed acoustic sensing in geophysics — Introduction

Geophysics, 2023
In recent years, fiber-optic distributed acoustic sensing (DAS) has experienced a rapid surge in popularity within the geophysics community. When compared to traditional point sensors, DAS offers several significant advantages. First, DAS provides spatially and temporally continuous measurements at high resolution along distances of more than 100 km ...
Jin, G., Kazei, V., Lellouch, A., Li, W., Titov, A., Rodriguez Tribaldos, V.   +5 more
openaire   +3 more sources

Distributed acoustic sensing for 2D and 3D acoustic source localization

Optics Letters, 2019
Distributed acoustic sensing (DAS) technology based on Rayleigh backscattering is experiencing a rapid development and leading itself into wider applications because of the unique capability of measuring sound and vibrations at all points along the sensing fiber.
Liang Jiajing, Wang Zhaoyong, Lu Bin, Wang Xiao, Li Luchuan, Ye Qing, Qu Ronghui, Cai Haiwen   +7 more
openaire   +2 more sources

A self-calibrating distributed acoustic sensing platform

Proceedings of the 4th international conference on Embedded networked sensor systems, 2006
We will demonstrate the operation of the Acoustic Embedded Networked Sensing Box (ENSBox), a platform for prototyping rapid-deployable distributed acoustic sensing systems. The ENSBox is a Linux-based acoustic sensing system with and integrated, high precision self-calibration facility sets it apart from other platforms. This selfcalibration is precise
Lewis Girod, Martin Lukac, Vlad Trifa, Deborah Estrin   +3 more
openaire   +1 more source

An Object Storage for Distributed Acoustic Sensing

Seismological Research Letters, 2023
Abstract Large-scale processing and dissemination of distributed acoustic sensing (DAS) data are among the greatest computational challenges and opportunities of seismological research today. Current data formats and computing infrastructure are not well-adapted or user-friendly for large-scale processing. We propose an innovative, cloud-
Yiyu Ni, Marine A. Denolle, Rob Fatland, Naomi Alterman, Bradley P. Lipovsky, Friedrich Knuth   +5 more
openaire   +1 more source

Distributed Acoustic Sensing: State of the Art

SPE Digital Energy Conference, 2013
Abstract Distributed Acoustic Sensing (DAS) is a newly developed passive fiber optic sensing technology. It has the ability to detect acoustic signals anywhere along the length of the fiber with a high frequency response and a tight spatial resolution.
Robert Cannon, Fred Aminzadeh
openaire   +1 more source