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Title: Distributed Acoustic Sensing Using Dark Fiber for Near-Surface Characterization and Broadband Seismic Event Detection

Abstract

We present one of the first case studies demonstrating the use of distributed acoustic sensing deployed on regional unlit fiber-optic telecommunication infrastructure (dark fiber) for broadband seismic monitoring of both near-surface soil properties and earthquake seismology. We recorded 7 months of passive seismic data on a 27 km section of dark fiber stretching from West Sacramento, CA to Woodland, CA, densely sampled at 2 m spacing. This dataset was processed to extract surface wave velocity information using ambient noise interferometry techniques; the resulting VS profiles were used to map both shallow structural profiles and groundwater depth, thus demonstrating that basin-scale variations in hydrological state could be resolved using this technique. The same array was utilized for detection of regional and teleseismic earthquakes and evaluated for long period response using records from the M8.1 Chiapas, Mexico 2017, Sep 8th event. The combination of these two sets of observations conclusively demonstrates that regionally extensive fiber-optic networks can effectively be utilized for a host of geoscience observation tasks at a combination of scale and resolution previously inaccessible.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1546644
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES

Citation Formats

Ajo-Franklin, Jonathan B., Dou, Shan, Lindsey, Nathaniel J., Monga, Inder, Tracy, Chris, Robertson, Michelle, Tribaldos, Veronica Rodriguez, Ulrich, Craig, Freifeld, Barry, Daley, Thomas, and Li, Xiaoye. Distributed Acoustic Sensing Using Dark Fiber for Near-Surface Characterization and Broadband Seismic Event Detection. United States: N. p., 2019. Web. doi:10.1038/s41598-018-36675-8.
Ajo-Franklin, Jonathan B., Dou, Shan, Lindsey, Nathaniel J., Monga, Inder, Tracy, Chris, Robertson, Michelle, Tribaldos, Veronica Rodriguez, Ulrich, Craig, Freifeld, Barry, Daley, Thomas, & Li, Xiaoye. Distributed Acoustic Sensing Using Dark Fiber for Near-Surface Characterization and Broadband Seismic Event Detection. United States. https://doi.org/10.1038/s41598-018-36675-8
Ajo-Franklin, Jonathan B., Dou, Shan, Lindsey, Nathaniel J., Monga, Inder, Tracy, Chris, Robertson, Michelle, Tribaldos, Veronica Rodriguez, Ulrich, Craig, Freifeld, Barry, Daley, Thomas, and Li, Xiaoye. Mon . "Distributed Acoustic Sensing Using Dark Fiber for Near-Surface Characterization and Broadband Seismic Event Detection". United States. https://doi.org/10.1038/s41598-018-36675-8. https://www.osti.gov/servlets/purl/1546644.
@article{osti_1546644,
title = {Distributed Acoustic Sensing Using Dark Fiber for Near-Surface Characterization and Broadband Seismic Event Detection},
author = {Ajo-Franklin, Jonathan B. and Dou, Shan and Lindsey, Nathaniel J. and Monga, Inder and Tracy, Chris and Robertson, Michelle and Tribaldos, Veronica Rodriguez and Ulrich, Craig and Freifeld, Barry and Daley, Thomas and Li, Xiaoye},
abstractNote = {We present one of the first case studies demonstrating the use of distributed acoustic sensing deployed on regional unlit fiber-optic telecommunication infrastructure (dark fiber) for broadband seismic monitoring of both near-surface soil properties and earthquake seismology. We recorded 7 months of passive seismic data on a 27 km section of dark fiber stretching from West Sacramento, CA to Woodland, CA, densely sampled at 2 m spacing. This dataset was processed to extract surface wave velocity information using ambient noise interferometry techniques; the resulting VS profiles were used to map both shallow structural profiles and groundwater depth, thus demonstrating that basin-scale variations in hydrological state could be resolved using this technique. The same array was utilized for detection of regional and teleseismic earthquakes and evaluated for long period response using records from the M8.1 Chiapas, Mexico 2017, Sep 8th event. The combination of these two sets of observations conclusively demonstrates that regionally extensive fiber-optic networks can effectively be utilized for a host of geoscience observation tasks at a combination of scale and resolution previously inaccessible.},
doi = {10.1038/s41598-018-36675-8},
journal = {Scientific Reports},
number = 1,
volume = 9,
place = {United States},
year = {Mon Feb 04 00:00:00 EST 2019},
month = {Mon Feb 04 00:00:00 EST 2019}
}

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journal, August 2018

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Dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features
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Distributed Acoustic Sensing – a new tool for seismic applications
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Surface-wave method for near-surface characterization: a tutorial
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Works referencing / citing this record:

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