snow & ice pod
Lauren Andrews [https://science.gsfc.nasa.gov/sci/bio/lauren.c.andrews] and I caught up in January 2024 when she visited Dartmouth to give an ice+climate seminar [https://sites.google.com/dartmouth.edu/ice-climate] as well as work on an ICESat-2 collaborative project. Much of conversation focused around subglacial hydrology, the flow of water under glaciers and ice sheets. In particular, we discuss the field campaign that she worked on as a graduate student. The result of this fieldwork was published in her 2014 Nature paper [https://doi.org/10.1038/nature13796]. A few names of folks that appear numerous times throughout the show are * Bob Hawley [https://faculty-directory.dartmouth.edu/robert-l-hawley], Dartmouth College * Martin (Tinu) Lüthi [https://www.geo.uzh.ch/~mluethi/], University of Zurich * Matt Hoffman [https://www.lanl.gov/search-capabilities/profiles/matthew-hoffman.shtml], Los Alamos National Laboratory I also mention the borehole catalog that I am compiling. In this project, I am collecting borehole observations of subglacial effective pressure (the difference between ice overburden and water pressure). The goal is to understand the distribution of effective pressure below glaciers (figures 1 and 2) and to constrain subglacial hydrology models. The data catalog is stored as a google sheet [https://docs.google.com/spreadsheets/d/1S-USi6L5FRTbCofL0S2lyNDCO-vAV7kJ0tTB_jJ-fTM/edit?usp=sharing]: please be in touch if you have data to add to the catalog! Figure 1: borehole observations of subglacial effective pressure from around the world. Figure 2: map showing the locations where boreholes have been drilled and instrumented to determine the subglacial effective pressure.
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