Science
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Flow History of Sít' Tlein
I spent some time researching how Sít' Tlein flowed from the earliest records we could find (1800s) to nowadays (2024). Sít' Tlein surges at an irregular time interval. Its three tributaries (Agassiz, Seward, Marvine) all exhibit their own dynamics, but also similarities in the frequency of their events. What we understood is that Sít' Tlein displays a whole spectrum of ice dynamics, from stagnant areas to massive surges capable of displacing the glacier front by more than 10 kilometers! But also that the flow direction of the main tributary, the Seward Glacier, changes direction every year like a pendulum! Check out the preprint of the paper (currently in revision): https://doi.org/10.31223/X5QM85. The figure on the right comes from it!
Dataset interpolation and analysis
Analyzing datasets requires sometimes to modify them heavily. The first one I had to work with was a global glacier surface velocity dataset. Despite its inherent qualities and remarkable coverage, missing data is still a challenge to face. A colleague coded an interpolation method based on the Probabilistic Matrix Factorization, on which we iterated several times. This got me interested in data interpolation techniques, and analysis that ensues. Stochastic Matrix Factorization, Inversions, Gaussian Process Regressions, Empirical Orthogonal Functions, ...All these techniques, based on vast tool repositories like Bayesian statistics and linear algebra, open the door to an understanding of today's data like never before.
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Conference posters
