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Journal Article

Tidally modulated seismic velocity changes observed using submarine dark fiber and the virtual-source method

Michal Chamarczuk, Jonathan Ajo-Franklin, Valeriia Sobolevskaia, Jeremy Patterson
Journal: Geophysics
Published: 02 September 2024
Geophysics (2024) L33–L48.
DOI: https://doi.org/10.1190/geo2023-0641.1
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Journal Article

Distributed acoustic sensing microseismic reflection imaging for hydraulic fracture and fault lineament characterization

Yuanyuan Ma, Jonathan Ajo-Franklin, Avinash Nayak, Xiaoyu Zhu, Julia Correa, Erich Kerr
Journal: Geophysics
Published: 07 May 2024
Geophysics (2024) 89 (4): D183–D192.
DOI: https://doi.org/10.1190/geo2023-0582.1
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Seismic Magnitude Estimation Using Low‐Frequency Strain Amplitudes Recorded by DAS Arrays at Far‐Field Distances

Avinash Nayak, Julia Correa, Jonathan Ajo‐Franklin
Published: 25 April 2024
Bulletin of the Seismological Society of America (2024) 114 (4): 1818–1838.
DOI: https://doi.org/10.1785/0120230318
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Reliable Earthquake Source Parameters Using Distributed Acoustic Sensing Data Derived from Coda Envelopes

Rengin Gök, William R. Walter, Justin Barno, Carlos Downie, Robert J. Mellors, Kevin Mayeda, Jorge Roman‐Nieves, Dennise Templeton, Jonathan Ajo‐Franklin
Published: 25 March 2024
Seismological Research Letters (2024) 95 (4): 2208–2220.
DOI: https://doi.org/10.1785/0220230270
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Journal Article

Subsurface Imaging Using Interferometry of Distributed Acoustic Sensing Ambient Noise Measurement along a Dark Fiber Line: A Case Study in Downtown Reno, Nevada

Majid Mirzanejad, Elnaz Seylabi, Scott Tyler, Jonathan Ajo‐Franklin, Rachel Hatch‐Ibarra, Seth Saltiel
Published: 01 February 2024
Bulletin of the Seismological Society of America (2024) 114 (3): 1613–1625.
DOI: https://doi.org/10.1785/0120230136
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Detecting fractures and monitoring hydraulic fracturing processes at the first EGS Collab testbed using borehole DAS ambient noise

David Li, Lianjie Huang, Yingcai Zheng, Yingping Li, Martin Schoenball, Verónica Rodriguez-Tribaldos, Jonathan Ajo-Franklin, Chet Hopp, Tim Johnson, Hunter Knox, Doug Blankenship, Patrick Dobson, Tim Kneafsey, Michelle Robertson
Journal: Geophysics
Published: 30 January 2024
Geophysics (2024) 89 (2): D131–D138.
DOI: https://doi.org/10.1190/geo2023-0078.1
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The Global DAS Month of February 2023

Andreas Wuestefeld, Zack J. Spica, Kasey Aderhold, Hsin‐Hua Huang, Kuo‐Fong Ma, Voon Hui Lai, Meghan Miller, Lena Urmantseva, Daniel Zapf, Daniel C. Bowden, Pascal Edme, Tjeerd Kiers, Antonio P. Rinaldi, Katinka Tuinstra, Camille Jestin, Sergio Diaz‐Meza, Philippe Jousset, Christopher Wollin, Arantza Ugalde, Sandra Ruiz Barajas, Beatriz Gaite, Gilda Currenti, Michele Prestifilippo, Eiichiro Araki, Takashi Tonegawa, Sjoerd de Ridder, Andy Nowacki, Fabian Lindner, Martin Schoenball, Christoph Wetter, Hong‐Hu Zhu, Alan F. Baird, Robin A. Rørstadbotnen, Jonathan Ajo‐Franklin, Yuanyuan Ma, Robert E. Abbott, Kathleen M. Hodgkinson, Robert W. Porritt, Christian Stanciu, Agatha Podrasky, David Hill, Biondo Biondi, Siyuan Yuan, Bin Luo, Sergei Nikitin, Jan Petter Morten, Vlad‐Andrei Dumitru, Werner Lienhart, Erin Cunningham, Herbert Wang
Published: 27 November 2023
Seismological Research Letters (2024) 95 (3): 1569–1577.
DOI: https://doi.org/10.1785/0220230180
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Nodal and Broadband Seismometer Complement to the Imperial Valley Dark Fiber DAS Array

Avinash Nayak, Verónica Rodríguez Tribaldos, Jonathan Ajo‐Franklin, Brianna Miranda, Chih‐Chieh Chien, Robert Mellors, Michelle Robertson, Matthew Brandin, John Rekoske, Todd Wood, Patrick Dobson, Trenton Cladouhos, Nicholas Madera, Eitan Shmagin, Emily Duran, Suzie Duran, The Imperial Valley Dark Fiber Team
Published: 28 September 2023
Seismological Research Letters (2023) 94 (6): 2852–2867.
DOI: https://doi.org/10.1785/0220230081
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PubDAS: A PUBlic Distributed Acoustic Sensing Datasets Repository for Geosciences

Zack J. Spica, Jonathan Ajo‐Franklin, Gregory C. Beroza, Biondo Biondi, Feng Cheng, Beatriz Gaite, Bin Luo, Eileen Martin, Junzhu Shen, Clifford Thurber, Loïc Viens, Herbert Wang, Andreas Wuestefeld, Han Xiao, Tieyuan Zhu
Published: 04 January 2023
Seismological Research Letters (2023) 94 (2A): 983–998.
DOI: https://doi.org/10.1785/0220220279
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Journal Article

Preface to the Focus Section on Big Data Problems in Seismology

Daniel T. Trugman, Lihua Fang, Jonathan Ajo‐Franklin, Avinash Nayak, Zefeng Li
Published: 28 July 2022
Seismological Research Letters (2022) 93 (5): 2423–2425.
DOI: https://doi.org/10.1785/0220220219
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The Imperial Valley Dark Fiber Project: Toward Seismic Studies Using DAS and Telecom Infrastructure for Geothermal Applications

Jonathan Ajo‐Franklin, Verónica Rodríguez Tribaldos, Avinash Nayak, Feng Cheng, Robert Mellors, Benxin Chi, Todd Wood, Michelle Robertson, Cody Rotermund, Eric Matzel, Dennise C. Templeton, Christina Morency, Kesheng Wu, Bin Dong, Patrick Dobson
Published: 10 June 2022
Seismological Research Letters (2022) 93 (5): 2906–2919.
DOI: https://doi.org/10.1785/0220220072
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Journal Article

Measurement of Surface‐Wave Phase‐Velocity Dispersion on Mixed Inertial Seismometer – Distributed Acoustic Sensing Seismic Noise Cross‐Correlations

Avinash Nayak, Jonathan Ajo‐Franklin, The Imperial Valley Dark Fiber Team
Published: 13 July 2021
Bulletin of the Seismological Society of America (2021) 111 (6): 3432–3450.
DOI: https://doi.org/10.1785/0120210028
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Journal Article

Distributed Acoustic Sensing Using Dark Fiber for Array Detection of Regional Earthquakes

Avinash Nayak, Jonathan Ajo‐Franklin, the Imperial Valley Dark Fiber Team
Published: 17 March 2021
Seismological Research Letters (2021) 92 (4): 2441–2452.
DOI: https://doi.org/10.1785/0220200416
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Testing of a permanent orbital surface source and distributed acoustic sensing for monitoring of unconventional reservoirs: Preliminary results from the Eagle Ford Shale

Feng Cheng, Julia Correa, Shan Dou, Barry Freifeld, Todd Wood, Kurt Nihei, Dante Guerra, Jens Birkholzer, Benxin Chi, Jonathan Ajo-Franklin
Journal: Geophysics
Published: 15 February 2021
Geophysics (2021) 86 (2): P1–P12.
DOI: https://doi.org/10.1190/geo2020-0403.1
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Introduction to this special section: Geophysical applications of fiber-optic distributed sensing

Mark Willis, Jonathan Ajo-Franklin, Baishali Roy
Journal: The Leading Edge
Published: 01 December 2017
The Leading Edge (2017) 36 (12): 973–974.
DOI: https://doi.org/10.1190/tle36120973.1
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An effective-medium model for P-wave velocities of saturated, unconsolidated saline permafrost

Shan Dou, Seiji Nakagawa, Douglas Dreger, Jonathan Ajo-Franklin
Journal: Geophysics
Published: 29 August 2017
Geophysics (2017) 82 (3): EN33–EN50.
DOI: https://doi.org/10.1190/geo2016-0474.1
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A rock-physics investigation of unconsolidated saline permafrost: P-wave properties from laboratory ultrasonic measurements

Shan Dou, Seiji Nakagawa, Douglas Dreger, Jonathan Ajo-Franklin
Journal: Geophysics
Published: 29 January 2016
Geophysics (2016) 81 (1): WA233–WA245.
DOI: https://doi.org/10.1190/geo2015-0176.1
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Field testing of fiber-optic distributed acoustic sensing (DAS) for subsurface seismic monitoring

Thomas M. Daley, Barry M. Freifeld, Jonathan Ajo-Franklin, Shan Dou, Roman Pevzner, Valeriya Shulakova, Sudhendu Kashikar, Douglas E. Miller, Julia Goetz, Jan Henninges, Stefan Lueth
Journal: The Leading Edge
Published: 01 June 2013
The Leading Edge (2013) 32 (6): 699–706.
DOI: https://doi.org/10.1190/tle32060699.1
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Redatuming through a salt canopy and target-oriented salt-flank imaging

Rongrong Lu, Mark Willis, Xander Campman, Jonathan Ajo-Franklin, M. Nafi Toksöz
Journal: Geophysics
Published: 31 March 2008
Geophysics (2008) 73 (3): S63–S71.
DOI: https://doi.org/10.1190/1.2890704
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