Dilatant till facilitates ice-stream flow in northeast Greenland

K. Christianson, L. E. Peters, R. B. Alley, S. Anandakrishnan, R. W. Jacobel, K. L. Riverman, A. Muto, and B. A. Keisling

Earth and Planetary Science Letters (1 September 2014)

DOI: 10.1016/j.epsl.2014.05.060

Abstract We present radio-echo sounding (RES), global positioning system (GPS), and active-source seismic data across the central portion of the Northeast Greenland Ice Stream (NEGIS). NEGIS widens downglacier from a small region of high geothermal flux near the ice divide. Our data reveal high-porosity (40+

keywords: Greenland; geophysics; glaciology; ice streams; active-source seismology; ice-penetrating radar

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