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Ethan F. Williams
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Journal Article

Variability in the Natural Frequencies of a Nine‐Story Concrete Building from Seconds to Decades

Ethan F. Williams, Thomas H. Heaton, Zhongwen Zhan, Valere R. Lambert
Published: 08 November 2022
The Seismic Record (2022) 2 (4): 237–247.
DOI: https://doi.org/10.1785/0320220032
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Directional Sensitivity of DAS and Its Effect on Rayleigh‐Wave Tomography: A Case Study in Oxnard, California

Jiaqi Fang, Yan Yang, Zhichao Shen, Ettore Biondi, Xin Wang, Ethan F. Williams, Matthew W. Becker, Dominic Eslamian, Zhongwen Zhan
Published: 02 November 2022
Seismological Research Letters (2023) 94 (2A): 887–897.
DOI: https://doi.org/10.1785/0220220235
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Geolocalization of Large‐Scale DAS Channels Using a GPS‐Tracked Moving Vehicle

Ettore Biondi, Xin Wang, Ethan F. Williams, Zhongwen Zhan
Published: 15 September 2022
Seismological Research Letters (2023) 94 (1): 318–330.
DOI: https://doi.org/10.1785/0220220169
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Scholte wave inversion and passive source imaging with ocean-bottom DAS

Ethan F. Williams, María R. Fernández-Ruiz, Regina Magalhaes, Roel Vanthillo, Zhongwen Zhan, Miguel González-Herráez, Hugo F. Martins
Journal: The Leading Edge
Published: 01 August 2021
The Leading Edge (2021) 40 (8): 576–583.
DOI: https://doi.org/10.1190/tle40080576.1
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Rose Parade Seismology: Signatures of Floats and Bands on Optical Fiber

Xin Wang, Ethan F. Williams, Martin Karrenbach, Miguel González Herráez, Hugo Fidalgo Martins, Zhongwen Zhan
Published: 06 May 2020
Seismological Research Letters (2020) 91 (4): 2395–2398.
DOI: https://doi.org/10.1785/0220200091
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