Aaron J Girard - Research Page

PUBLICATIONS

Journal Articles

• Pandey, A., J. Shragge, A.J. Girard, (2025) "First-order control factors for ocean-bottom ambient seismology interferometric observations," Accepted in Geophysical Journal International.

• Pandey, A., S. de Ridder, J. Shragge, A.J. Girard, (2025) "Ocean-bottom seismic interferometry in coupled acoustic-elastic media," Geophysical Journal International, Volume 242, Issue 3, September 2025, ggaf271.

• *Girard, A.J., J. Shragge, M. Danilouchkine, C. Udengaard, S. Gerritsen, (2024) "Observations from the Seafloor: Ultra-low-frequency Ambient Ocean-Bottom Nodal Seismology at the Amendment Field," Geophysical Journal International, Volume 239, Issue 1, October 2024, Pages 17–36.  https://eartharxiv.org/repository/view/6769/

• Shragge, J., A.J. Girard, C. Oren, R. Krahenbuhl (2024) "Elastic Time-Reverse Imaging of Backscattered Surface-Wave Data," GEOPHYSICS 89: KS119-KS128.

• Nakata, R., N. Nakata, A.J. Girard, D. Lumley, M. Ichikawa, A. Kato, Z. Xue, (2024) "Time-lapse velocity change estimation by anisotropic elastic full waveform inversion for CO2 sequestration at the Nagaoka CCS site," International Journal of Greenhouse Gas Control 136,  104176.

• Chambers, D., G. Jin, A. Tourei , A.H. Saeed Issah, A. Lellouch, E. Martin, D. Zhu, A. Girard, S. Yuan, T. Cullison, T. Snyder, S. Kim, N. Danes, N. Punithan, M.S. Boltz, and M.M. Mendoza, (2024) "DASCore: a Python Library for Distributed Fiber Optic Sensing," Seismica 3(2).

• Yang, J., J. Shragge, A.J. Girard, E. Gonzalez, J. Ticona, A. Minaya and R. Krahenbuhl, (2023) "Seismic Characterization of a Recent Majes Landslide Complex," Sustainability, 15, no. 18: 13574.

• Pandey, A., J. Shragge, D. Chambers, and A. Girard, (2023) "Developing a Distributed Acoustic Sensing Seismic Land Streamer: Concept and Validation", GEOPHYSICS, 88: WC59-WC67.

• *Girard, A.J., Shragge, J. and Olofsson, B., (2023), "Low-frequency ambient ocean-bottom node surface-wave seismology: A Gulf of Mexico case history," GEOPHYSICS 88: B21-B32. (kudos)

• *Girard, A.J. and Shragge, J. (2020), Automated processing strategies for ambient seismic data. Geophysical Prospecting, 68: 293-312.

• *Girard, A.J. and Shragge, J. (2020), Direct migration of ambient seismic data. Geophysical Prospecting, 68: 270-292.

• *Girard, A.J. (2019). Automated processing and direct migration of ambient seismic data. University of Western Australia, PhD Thesis.

Conference Abstracts

• Pandey, A., J. C. Shragge and A.J. Girard (2025), "First-order Control Factors for Ocean-bottom Ambient Seismology Interferometric Observations." IMAGE, SEG Annual Meeting, Houston, Texas.

• Davis, D., J. C. Shragge, A.J. Girard and S. de Ridder (2025), "Ambient seismic frequency-domain gradiometry." IMAGE, SEG Annual Meeting, Houston, Texas.

• Pels, M., J. C. Shragge and A.J. Girard (2025)., "3-D elastic time-reverse imaging of a void anomaly: A case history." IMAGE, SEG Annual Meeting, Houston, Texas.

• *Girard, A.J., D. O’Connell, J. Shragge, and M.M. Haney. "Active-source tomography velocity modelling of the Kīlauea summit and surrounding area." Abstract presented at 2024 Fall Meeting, AGU, 2024.

• Tourei, A., D.J.A. Chambers, G. Jin, A.H. Issah, A. Lellouch, E. Martin, A.J. Girard, D. Zhu, S. Yuan, N. Punithan, T. Snyder, N. Danes, S. Boltz, and M. Mendoza. "DASCore: An open-source Python library for distributed acoustic sensing." Abstract presented at 2024 Fall Meeting, AGU, 2024.

• Nakata, R., N. Nakata, A.J. Girard, D.E. Lumley, M. Ichikawa, A. Kato, and Z. Xue. "Time-lapse velocity change monitoring by anisotropic elastic full waveform inversion for CO22 sequestration at the Nagaoka CCS site." Abstract presented at 2024 Fall Meeting, AGU, 2024.

• *Girard, A.J., J. Shragge, M. Danilouchkine, C. Udengaard, S. Gerritsen (2024), "(Ultra-)low frequency interferometric surface-wave scattering in ambient OBN seismic data," IMAGE, SEG Annual Meeting, Houston, Texas.

• Pandey, A., J. Shragge, and A. J. Girard (2024), "Ambient crosscorrelation modeling for dense ocean-bottom node arrays: a Gulf of Mexico example." IMAGE, SEG Annual Meeting, Houston, Texas.

• J. Shragge and A. Girard. "Observations From the Seafloor: Ultra-Low-Frequency Ambient Ocean-Bottom Nodal Seismology From the Gulf of Mexico." In Seismological Society of America 2024 Annual Meeting. 2024.

• D. Chambers, G. Jin, A. Tourei, A.H.S. Issah, A. Lellouch, E. Martin, D. Zhu, A. Girard, S. Yuan, T. Cullison, T. Snyder, S. Kim, N. Danes, N. Punithan, S. Boltz, and M.M. Mendoza. "DASCore: A python library for distributed acoustic sensing." In Seismological Society of America 2024 Annual Meeting. 2024.

• Nakata, R., N. Nakata, A. Girard, M. Ichikawa, A. Kato, D. Lumley and Z. Xue (2022), "Time-lapse crosswell seismic monitoring of CO2 injection at the Nagaoka CCS site using elastic full waveform inversion," SEG Technical Program Expanded Abstracts: 802-806.

• *Girard, A. J., J. Shragge, and B. Olofsson (2021), "Identifying salt flanks using low-frequency ambient OBN surface-wave seismology," SEG Technical Program Expanded Abstracts: 1991-1995.     (Received Honorable Mention for best submission in 2021)

• *Girard, A.J. and J. Shragge, (2017), "Automated Processing Workflow for Ambient Seismic Recordings", Fall Meeting, AGU, New Orleans, LA.

• *Girard, A.J. and Shragge, J., (2016), "Extracting body waves from ambient seismic recordings," SEG Technical Program Expanded Abstracts : 2715-2719.

• *Girard, A.J. and J. Shragge, (2015), "The utility of extended images in ambient seismic wavefield migration", Fall Meeting, AGU, San Francisco, Calif.

• Elapavuluri, P.K., and Girard, A.J., (2014), "Estimating Seismic Uncertainity in Model Space", 76th EAGE Conference and Exhibition 2014, p.1 - 5

• *Girard, A., and Vasconcelos, I., (2010), "Image‐domain time‐lapse inversion with extended images," SEG Technical Program Expanded Abstracts : 4200-4204.

• *Girard, A., Jie-A-Looi, M., Bakker, J., and Momot, F. (2010), "Searching for a Roman Villa and Prehistoric Flint Mines in Kanton Zürich", 1st Annual International Geoscience Student Conference, Bucharest, Romania.

Government Reports

• Shragge, J., A. Girard, H. Flamme, B. Artman, R. Krahenbuhl, J. Bradford, A. Kumar, P. Reppert, R. Hammack, and D. Glaser, (2023) NETL Plastic Pipes Project – Final Report; DOE/NETL-2023/4327; NETL Technical Report Series; U.S. Department of Energy, National Energy Technology Laboratory: Pittsburgh, PA.

• Shragge, J., A. Girard, H. Flamme, B. Artman, R. Krahenbuhl, J. Bradford, Y. Li, P. Reppert, R. Hammack, and  D. Glaser. (2023) NETL Plastic Pipes Project - June 2022 Progress Report. United States: N. p., 2022. Web. doi:10.2172/1924455.

Non-technical

• Ore, T., E. R. Martin, I. Rubio-Cisneros, A. Girard, J. Ma, S. Kanakiya, O. Sanuade, A. Titov, and R. de Souza, (2023), "Research Committee Update: Hot topics in geophysics: Progress, trends, and perspectives," The Leading Edge 42: 360–363.

• Titov, A., Girard, A. and Martin, E., (2021), "Research Committee Update: Working with - and for - early-career researchers," The Leading Edge 40: 464.

• *Girard, A., (2020), "Student Zone: Students encouraged to build new regional Challenge Bowls," The Leading Edge 39: 600.

• *Girard, A., (2010), "Geophysics: Oh, the places a student can go! one student's journey," The Leading Edge 29: 604-605.