Call for Registration
Arctic Research Seminar Series
Arctic Research Consortium of the U.S. (ARCUS)
Online via Zoom
Date/Time: Thursday, 5 December 2024, 9:00-10:00 a.m. AKST
Speaker: Jessica Mejia (Syracuse University)
Presentation Title: Cracks in the Ice: Using observations and models of crevasse growth to understand the transport of water to the base of glaciers and ice sheets
To register for the event, go to:
https://www.arcus.org/research-seminar-series/registration
The Arctic Research Consortium of the U.S. (ARCUS) invites registration for the next Arctic Research Seminar featuring Jessica Mejia (Syracuse University). The presentation, titled Cracks in the Ice: Using observations and models of crevasse growth to understand the transport of water to the base of glaciers and ice sheets, will be held via Zoom on Thursday, 5 December 2024, 9:00-10:00 a.m. AKST.
Seminar Abstract:
The Greenland Ice Sheet is a major contributor to global sea level rise, driven by both increased melting and dynamic ice discharge into the ocean. While often treated separately, these processes are interconnected because when surface meltwater flows into crevasses—cracks on the ice sheet surface—they can hydrofracture through the entire ice sheet and reach the bed. Once surface meltwater reaches the ice-bedrock interface it can modulate subglacial water pressures, the structure of the subglacial drainage system, and influence ice dynamics.
In this talk, Jessica will focus on recent work understanding these hydraulic connections. First, she will discuss how far inland these hydraulic connections can extend into the ice sheet’s interior using coupled observational, remote sensing, and modeling applied to the firn aquifer on Helheim Glacier in southeast Greenland. Next, Jessica will discuss in situ observations of crevasse opening and what it means for firn aquifer drainage. Finally, she will discuss some modeling work applied to rapid hydraulically driven fracture propagation from the fast drainage of supraglacial lakes on the Greenland Ice Sheet.
Registration is required for this event. Instructions for accessing the webinar will be sent to registrants prior to the event.
To register for the event, go to:
https://www.arcus.org/research-seminar-series/registration
For questions, contact:
Stacey Stoudt
Email: stacey [at] arcus.org