Ph.D, Geophysics, University of Washington – 2015
Earth’s ice sheets, especially the Greenland Ice Sheet, as well as Antarctica and past ice sheets (e.g., the Laurentide). Ice dynamics and interactions between ice flow and liquid water. How, when, and where does surface melt water get to the ice-sheet bed, and how does this affect ice dynamics? Her primary tool is process-scale ice-sheet models, and she incorporates remote sensing data into developing these models.
K. Poinar, C. F. Dow, and L. C. Andrews (2019). “Long-term support of an active subglacial hydrologic system in Southeast Greenland by firn aquifers.” Geophysical Research Letters, doi:10.1029/2019GL082786.
C. Dow, W. Lee, J. Greenbaum, C. Greene, D. Blankenship, K. Poinar, A. Forrest, D. Young, and C. Zappa (2018). “Basal channels drive active surface hydrology and transverse ice-shelf fracture.” Science Advances 4(6), doi:10.1126/sciadv.aao7212.
K. Poinar, I. Joughin, D. Lilien, L. Brucker, L. Kehrl, and S. Nowicki, 2017. “Drainage of Southeast
Greenland Firn-Aquifer Water through Crevasses to the Bed.” Frontiers in Earth Science special issue “Melt Water Retention Processes in Snow and Firn on Ice Sheets and Glaciers: Observations and Modeling” 5, 8–15. doi:10.3389/feart.2017.00005.
K. Poinar, I. Joughin, J. T. M. Lenaerts, and M. R. van den Broeke, 2016. “Englacial Latent-Heat Transfer Has Limited Influence on Seaward Ice Flux in Western Greenland.” Journal of Glaciology 62(235), 1–16. doi:10.1017/jog2016.103.
D. Shapero, I. Joughin, K. Poinar, M. Morlighem, F. Gillet-Chaulet, 2016. “Basal Resistance for Three of the Largest Greenland Outlet Glaciers.” Journal of Geophysical Research 121, 1–13. doi:10.1002/2015JF003643.
K. Poinar, I. Joughin, S. B. Das, M. D. Behn, J. T. M. Lenaerts, and M. R. van den Broeke, 2015. “Limits to Future Expansion of Surface-Melt-Enhanced Ice Flow into the Interior of Western Greenland.” Geophysical Research Letters
42(6), 1800–1807. doi:10.1002/2015GL063192.