John Ragland

John Ragland

PhD student in Electrical Engineering at the University of Washington

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John Ragland PhD

Post-Doctoral Scholar, School of Oceanography, University of Washington </br> phone: (256)-678-2268, email: jhrag (at) uw (dot) edu, website: [ [John-Ragland.github.io] ](https://John-Ragland.github.io)

Education

University of Washington Ph.D. in the department of Electrical and Computer Engineering, 2020-2024</br> Adviser: Shima Abadi</br> Thesis: Using coherent ambient sound to probe the ocean</br> Emphasis: Ambient noise interferometry, Ocean basin tomography</br>

Auburn University M.S. in the department of Electrical and Computer Engineering, suma cum laude 2019-2020</br> Adviser: Thaddeus Roppel</br> Thesis: Digital Simulation and Recreation of a Vacuum Tube Guitar Amp [link] </br> Emphasis: Digital Signal Processing, Real-time Audio Processing, Physical Modeling

Auburn University B.S. in the department of Electrical and Computer Engineering, suma cum laude, 2015-2019</br> Honors College Scholar</br> </br>

Experience

  • Post-Doctoral Scholar, July 2024 - (present), University of Washington
  • Graduate Researcher, June 2020 - June 2024, The University of Washington
  • Summer Intern, June 2022 - September 2022, Applied Research in Acoustics
  • Graduate Teaching Assistant, May 2019 - May 2020, Auburn University

Journal Publications

(in preparation) **Ragland, John** and Durofchalk, Nicholas and Dall’Osto, David and Gemba, Kay and Abadi, Shima, (2024), Positive receptions of the Kauai Beacon with Ocean Observatories Initiatve Hydrophones, *The Journal of the Acoustical Society of America* </br>
  

  
**Ragland, John** and Abadi, Shima and Sabra, Karim, (2024), Using Ocean Ambient Sound to Measure Local Integrated Deep Ocean Temperature, *Geophysical Research Letters Vol. 51* </br>[ [link] ](https://doi.org/10.1029/2024GL108943) </br>
  

  
(submitted) Schönau, Martha and Hiron, Luna and **Ragland, John** and Raja, Keshav and Skitka, Joseph and Solano, Miguel and Xu, Xiaobiao and Arbic, Brian and Buijsman, Maarten and Chassignet, Eric and Coelho, Emanuel and Helber, Robert and Shriver, Jay and Summers, Jason and Verlinden, Kathryn and Wallcraft, Allan, (2024), An overview to modeling, characterizing, and predicting the effects of internal gravity waves on acoustic propagation at basin to global scales, *Oceanography Magazine* </br>
  

  
**Ragland, John** and Schwock, Felix and Munson, Matthew and Abadi, Shima, (2022), An overview of ambient sound using Ocean Observatories Initiative hydrophones, *The Journal of the Acoustical Society of America Vol. 151* </br>[ [link] ](https://doi.org/10.1121/10.0009836) </br>
  

  
**Ragland, John** and Abadi, Shima and Sabra, Karim, (2022), Long-term noise interferometry analysis in the northeast Pacific Ocean, *The Journal of the Acoustical Society of America Vol. 151* </br>[ [link] ](https://doi.org/10.1121/10.0009232) </br>
  

  
**Ragland, John** and Abadi, Shima, (2022), Exploring surface source contributions to ocean ambient noise interferometry with airgun shots, *The Journal of the Acoustical Society of America Vol. 152* </br>[ [link] ](https://doi.org/10.1121/10.0015231) </br>

Talks

Invited Talks

MG&G Group, University of Washington, Seattle WA - February, 2024</br></br> MG&G Group, University of Washington, Seattle WA - May, 2023</br></br> Navy Research Laboratory, Ocean Sciences Division, Stennis MS - March, 2023</br></br> Applied Research Laboratory - UW, Seattle WA - November, 2022</br></br>

Conference Presentations

**Ragland, John** and Durofchalk, Nicholas and Gemba, Kay and Dall’Osto, David and Abadi, Shima, (2024), Kauai Beacon receptions and analysis with open-access hydrophones in the North Pacific Ocean, 186th Meeting of the Acoustical Society of America, *Ottawa, CA* [ [link] ]()</br>
  



  
**Ragland, John** and Durofchalk, Nicholas and Abadi, Shima and Dall’Osto, David and Gemba, Kay, (2024), Towards acoustic observations of ocean basin temperatures using the Kauai beacon and Ocean Observatories Initiative Hydrophones, Ocean Sciences Meeting, *New Orleans, LA* [ [link] ]()</br>
  



  
**Ragland, John** and Abadi, Shima, (2023), Towards estimating water column properties using ambient noise interferometry in the deep ocean, Underwater Acoustics Conference and Exposition, *Kalamata, Greece* [ [link] ]()</br>
  



  
**Ragland, John** and Durofchalk, Nicholas and Gemba, Kay and Abadi, Shima, (2023), Detecting the Kauai source beacon with ocean observatories innitiative hydrophones, 185th Meeting of the Acoustical Society of America, *Sydney, Australia* [ [link] ]()</br>
  



  
**Ragland, John** and Abadi, Shima, (2023), Using ocean ambient sound to sense arrival time fluctuations due to temperature, 185th Meeting of the Acoustical Society of America, *Sydney, Australia* [ [link] ]()</br>
  



  
Douglass, Alexander S. and **Ragland, John** and Abadi, Shima, (2023), Overview of distributed acoustic sensing technology and recently acquired data sets, 184th Meeting of the Acoustical Society of America, *Chicago, IL* [ [link] ](https://doi.org/10.1121/10.0018174)</br>
  



  
Abadi, Shima and Douglass, Alexander S. and **Ragland, John**, (2023), Comparing distributed acoustic sensing data with hydrophone recordings, 184th Meeting of the Acoustical Society of America, *Chicago, IL* [ [link] ](https://doi.org/10.1121/10.0018175)</br>
  



  
**Ragland, John** and Douglass, Alexander S. and Abadi, Shima, (2023), Using distributed acoustic sensing for ocean ambient sound analysis, 184th Meeting of the Acoustical Society of America, *Chicago, IL* [ [link] ](https://doi.org/10.1121/10.0018176)</br>
  



  
**Ragland, John** and Abadi, Shima, (2022), Long-term ambient noise interferometry in the NE Pacific deep ocean, Ocean Sciences Meeting, *Online Meeting* [ [link] ](https://web.archive.org/web/20230711201338/https://osm2022.secure-platform.com/a/gallery/rounds/3/details/3104)</br>
  



  
**Ragland, John** and Abadi, Shima, (2022), Exploring surface source distributions for ocean ambient noise interferometry with airgun shots, 182th Meeting of the Acoustical Society of America, *Denver, CO* [ [link] ](https://doi.org/10.1121/10.0011063)</br>
  



  
**Ragland, John** and Schwock, Felix and Liu, Zhaoyu and Abadi, Shima, (2022), Overview of ambient noise research and outreach with OOI hydrophones, AGU Fall Meeting, *Chicago, IL* [ [link] ](https://ui.adsabs.harvard.edu/abs/2022AGUFMOS25E0961R)</br>
  



  
**Ragland, John** and Abadi, Shima, (2022), Overview of ocean ambient noise interferometry – Theory and simulation, 183th Meeting of the Acoustical Society of America, *Nashville, TN* [ [link] ](https://doi.org/10.1121/10.0016311)</br>
  



  
Alvaro, Alejandro and Schwock, Felix and **Ragland, John** and Abadi, Shima, (2021), Ship detection from passive underwater acoustic recordings using machine learning, 180th Meeting of the Acoustical Society of America, *Seattle, WA* [ [link] ](https://doi.org/10.1121/10.0007848)</br>
  



  
Schwock, Felix and **Ragland, John** and Abadi, Shima, (2021), OOIPy: A Python toolbox for accessing and analyzing sata from the Ocean Observatories Initiative, 180th Meeting of the Acoustical Society of America, *Seattle, WA* [ [link] ](https://asa.scitation.org/doi/abs/10.1121/10.0007845)</br>
  



  
**Ragland, John** and Abadi, Shima, (2021), Estimating ocean variables using ambient noise interferometry, 180th Meeting of the Acoustical Society of America, *Seattle, WA* [ [link] ](https://doi.org/10.1121/10.0007697)</br>
  



  
**Ragland, John** and Abadi, Shima, (2021), Long-term noise interferometry analysis in the northeast Pacific Ocean, 179th Meeting of the Acoustical Society of America, *Online Meeting* [ [link] ](https://doi.org/10.1121/10.0004609)</br>
  



  
**Ragland, John** and Schwock, Felix and Munson, Matthew and Abadi, Shima, (2021), An overview of ambient sound using OOI hydrophone network, 180th Meeting of the Acoustical Society of America, *Seattle, WA* [ [link] ](https://doi.org/10.1121/10.0007594)</br>

Awards

  • eScience postdoctoral fellowship - Fellowship awarded to interdisciplinary researchers who are actively involved in developing and/or utilizing advanced data science tools and techniques in their research at the UW, September 2024
  • ASA best student paper award - second place at the ASA Nashville in underwater acoustics technical committee, December 2022
  • The Daoma and Murray Strasberg Memorial Scholarship - for Graduate Students in Ocean Acoustics, May 2023

Open Source Code Contributions

  • OOIPy - a python package for accessing broadband and low frequency hydrophone data that is part of the Ocean Observatories Innitiative [github] [pypi]
  • xrsignal (in development)- a python package that ports functionality from scipy.signal to xarray and is compatible with distributed computing [github]

Cruise Experience

  • RC0090 2022, 2 days - deployed mooring with two hydrophones that was successfully recovered one week later. The goal of this deployment was to acoustically measure methane seeps in the Puget Sound.
  • RR2411 2024, 21 days - joint operation to measure deep scattering layer, and low-frequency acoustic propagation around seamounts in the North Atlantic.

Media Coverage

  • UW ECE spotlights, [*Listening to the ocean to measure the impact of climate changeUW Department of Electrical & Computer Engineering*](https://web.archive.org/web/20230731211310/https://www.ece.uw.edu/spotlight/listening-to-the-ocean-climate-change/)
  • OOI Science Highlights, An Overview of Ambient Sound Using OOI Hydrophones