Sara Pierson

Tell us about your work/research. What kinds of things do you do?

My PhD topic is "wireless acoustic data transfer through ice" -- quite a mouthful! I model and test a new method for wireless data transfer using pressure waves instead of electromagnetic waves. These "acoustic" waves are in the frequency range of ~1-50kHz. Due to their physical nature and lower frequency (compared to electromagnetic waves) this data transfer method, while not intended for high-volume transfer of data, is promising for its ability to propagate through media where electromagnetic waves can not--such as ice and water mixtures. The secondary benefit of "acoustic" data transfer is its inherent capability for environmental characterization! Thus, wireless acoustic data transfer methods are a rapidly growing field of interest for enabling minimally invasive and long-term monitoring of Earth's polar regions; the goal is that small, wireless devices could be placed on ice shelves to help localize under-ice ROVs/AUVs while providing passive monitoring of the ice shelf. My work consists of making blocks of ice in a -40 degree freezer (!) and sending acoustic signals through these blocks -- testing modulation and characterization methods. In the future, I plan to do in-situ testing in Greenland or at Earth's polar regions with my lab--ideally Antarctica!

What sparked your initial interest in your career?

As an undergraduate student I studied Aerospace Engineering, and learned that many of the principles used for enabling space missions are applied to deep-sea exploration missions as well! After learning that humans have barely explored the depths of our own ocean I became absorbed by the idea that our next frontier is the big blue expanse that covers the majority of our Earth! I began research in a lab with an under-ice ROV, tasked with underwater communications efforts. One thing lead to another and I started studying all things acoustics-related! From sonar to seismics, my love of all things acoustics led me to the thesis topic I have today!

Who influenced you or encouraged you the most?

Sheer force of will was my greatest encouragement through the friends I have made while in my graduate program have always been my greatest support system. I have been so fortunate to find them!

What element of your work/study do you think is the most fascinating?

My work in acoustic through-ice data transfer has seen interest not only for polar regions on Earth--but for future missions to ocean worlds like Europa! Getting to participate in NASA research and/or conferences due to the cutting-edge nature of my research has been very, very cool!

What other jobs led you to your current career?

I don't currently have a career, but I am enjoying my life as a PhD thoroughly as I work towards one!

What are your degrees and certifications?

Bachelor of Science in Aerospace Engineering -- Georgia Institute of Technology 2020; 
Masters of Science in Mechanical Engineering -- Georgia Institute of Technology 2023; 
Currently a Ph.D. Candidate at Cornell University

What are your hobbies?

I love dancing (I dance Salsa, Bachata, and Zouk!), sketching, painting, rock climbing, and riding my bike around town. When I am lucky enough to be on the ocean, I love to scuba dive or snorkel.