Jessica Mejía

jzmejia@buffalo.edu
http://jessicamejia.xyz

Hi, I’m Jess!

woman in a navy parka and tan snow pants standing on a a flat snow-covered surface (Greenland Ice Sheet) Blue sky with clouds in the distance

I’m a glacial hydrologist 💧❄️🧊 and post-doc in the glacier modeling lab as of Fall 2021.

I’m interested in understanding the coupling between meltwater and ice dynamics on glaciers and ice sheets.

Person standing on bare ice with a moulin in the foreground.

I finished my Ph.D. in May 2021 at the University of South Florida. My work there focused on the role of moulins in the hydraulic system of the western Greenland Ice Sheet. To learn more about the role of moulins in the glacial hydraulic cycle, we instrumented moulins with piezometers on Sermeq Avannarleq, an outlet glacier just north of Ilulissat. We also measured meltwater production and delivery to moulins, surface routing variability, surface ice motion, and glaciohydraulic tremor within the ablation area.

By collecting robust datasets I spent a lot of time on data analysis and developing open-source tools in python.

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These data gave us insights into the structure and function of the subglacial drainage system. Check out my new paper Isolated Cavities Dominate Greenland Ice Sheet Dynamic Response to Lake Drainage.

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& now

I’m following the water

I came to Buffalo to join the Follow the Water project, focused on understanding the hydrology of Helheim, an outlet glacier in southeast Greenland. We will be installing GPS stations in a strain diamond around crevasses being fed by a firn aquifer. We hope to capture the crevasse slowly fracture to the bed. These measurements of surface strain will inform a crevasse propagation model that tells us about how water reaches the bed at the most inland areas of the Greenland Ice Sheet.

& other projects I’m working on

CryoCommunity is the product of the MARS pod’s (Midwest And Random Stragglers glaciology) participation in URGEGeosciences in Spring 2021. Members of our URGE pod represent many different institutions and we seek to involve the broader cryospheric community in positive change. We started this website to generate, collate, and distribute best practices across a suite of academic processes and institution types.

The purpose of CryoCommunity is to build and foster a more just, equitable, diverse, and inclusive community and culture within the cryospheric sciences. We recognize that systematic racism and sexism are harmful barriers inherent in academic institutions. CryoCommunity aims to share resources and best practices across the community and to advocate for the changes needed to create an equitable and inclusive culture.