Discussion on the sensitivity of optical cables based on distributed acoustic sensing
Sign Up to like & getrecommendations! Published in 2019 at "Optical Review"
DOI: 10.1007/s10043-019-00547-x
Abstract: Distributed acoustic sensing (DAS) technology plays an increasingly important role in the field of underwater acoustic detection because of its own advantages. To measure acoustic pressure sensitivity of seven kinds of optical cables in the… read more here.
Keywords: optical cables; pressure sensitivity; acoustic pressure; sensitivity ... See more keywords
Novel cable coupling technique for improved shallow distributed acoustic sensor VSPs
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Geophysics"
DOI: 10.1016/j.jappgeo.2017.01.007
Abstract: Abstract Vertical seismic profiles (VSPs) collected using fiber optic distributed acoustic sensors (DAS) are becoming increasingly common; yet, ensuring good cable coupling with the borehole wall remains a persistent challenge. Traditional cable deployment techniques used… read more here.
Keywords: novel cable; cable; coupling technique; distributed acoustic ... See more keywords
Characterising sediment thickness beneath a Greenlandic outlet glacier using distributed acoustic sensing: preliminary observations and progress towards an efficient machine learning approach
Sign Up to like & getrecommendations! Published in 2023 at "Annals of Glaciology"
DOI: 10.1017/aog.2023.15
Abstract: Distributed Acoustic Sensing (DAS) is increasingly recognised as a valuable tool for glaciological seismic applications, although analysing the large data volumes generated in acquisitions poses computational challenges. We show the potential of active-source DAS to… read more here.
Keywords: beneath; outlet glacier; acoustic sensing; machine learning ... See more keywords
Characterizing Thunder‐Induced Ground Motions Using Fiber‐Optic Distributed Acoustic Sensing Array
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Geophysical Research"
DOI: 10.1029/2019jd031453
Abstract: We report for the first time on a distributed acoustic sensing (DAS) array using preexisting underground fiber optics beneath the Penn State campus for detecting and characterizing thunder‐induced ground motions. During a half‐hour interval from… read more here.
Keywords: thunder; array; ground; fiber optic ... See more keywords
Distributed Acoustic Sensing of Seismic Properties in a Borehole Drilled on a Fast‐Flowing Greenlandic Outlet Glacier
Sign Up to like & getrecommendations! Published in 2020 at "Geophysical Research Letters"
DOI: 10.1029/2020gl088148
Abstract: Distributed Acoustic Sensing (DAS) is a new technology in which seismic energy is detected, at high spatial and temporal resolution, using the propagation of laser pulses in a fiber‐optic cable. We show analyses from the… read more here.
Keywords: fast flowing; distributed acoustic; outlet; acoustic sensing ... See more keywords
Long-term Ambient seismic interferometry for constraining seasonal subsurface velocity variations in urban settings: A distributed acoustic sensing (DAS) case study
Sign Up to like & getrecommendations! Published in 2023 at "Geophysical Journal International"
DOI: 10.1093/gji/ggad181
Abstract: Ambient seismic interferometry of distributed acoustic sensing (DAS) data acquired on optical fiber arrays is an increasingly common approach for subsurface investigation. The fixed infrastructure and low maintenance costs of commodity telecommunications fiber also supports… read more here.
Keywords: subsurface; time; velocity; seismic interferometry ... See more keywords
Vibration Detection in Distributed Acoustic Sensor With Threshold-Based Technique: A Statistical View and Analysis
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2020.3036450
Abstract: Detecting vibrations with high probability and low false alarm probability is crucial for prompting distributed acoustic sensors (DASs) to real applications. It is known that detection performance mainly depends on signal-to-noise ratio (SNR) and many… read more here.
Keywords: vibration detection; distributed acoustic; threshold based; noise ... See more keywords
Horse Gait Identification Using Distributed Acoustic Sensing
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2020.3027922
Abstract: In this paper field measurements are carried out using a distributed acoustic sensing system (DAS) for the identification of horse gait. The DAS system has a spatial resolution of 1 m, frequency range of 1–5… read more here.
Keywords: distributed acoustic; gait; identification; horse gait ... See more keywords
Distributed Acoustic Sensing With Sensitivity-Enhanced Optical Cable
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2020.3035002
Abstract: Fiber-optic distributed acoustic sensing (DAS) technology has many outstanding advantages, such as long sensing range, high detection efficiency, wide frequency response, low operation cost, long working lifetime, et al. It can be anticipated that DAS… read more here.
Keywords: distributed acoustic; sensitivity; acoustic sensing; optical cable ... See more keywords
Coupled Noise Reduction in Distributed Acoustic Sensing Seismic Data Based on Convolutional Neural Network
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2022.3144421
Abstract: Distributed acoustic sensing (DAS) is widely recognized as a new technology to replace conventional geophones for the acquisition of seismic data. However, the collected data often contain a lot of coupled noise due to cable… read more here.
Keywords: distributed acoustic; noise reduction; seismic data; coupled noise ... See more keywords
Vertical seismic profiling using distributed acoustic sensing with scatter‐enhanced fibre‐optic cable at the Cu–Au New Afton porphyry deposit, British Columbia, Canada
Sign Up to like & getrecommendations! Published in 2019 at "Geophysical Prospecting"
DOI: 10.1111/1365-2478.12828
Abstract: ABSTRACT Wireline logs and vertical seismic profile data were acquired in two boreholes intersecting the main mineralized zone at the Cu–Au New Afton porphyry deposit, Canada, with the objectives of imaging lithological contacts, fault zones… read more here.
Keywords: fibre optic; new afton; optic cable; vertical seismic ... See more keywords