01966nas a2200241   4500008004100000022001400041245010500055210006900160300001000229520113200239653001701371653002301388653004201411100002001453700002301473700002301496700001901519700001901538700002501557700002001582700002601602856009601628       2017                        eng d  a0022-143000aAcquisition of a 3 min, two-dimensional glacier velocity field with terrestrial radar interferometry0 aAcquisition of a 3 min twodimensional glacier velocity field wit  a1–83 a{\textless}p{\textgreater}Outlet glaciers undergo rapid spatial and temporal changes in flow velocity during calving events. Observing such changes requires both high temporal and high spatial resolution methods, something now possible with terrestrial radar interferometry. While a single such radar provides line-of-sight velocity, two radars define both components of the horizontal flow field. To assess the feasibility of obtaining the two-dimensional (2-D) flow field, we deployed two terrestrial radar interferometers at Jakobshavn Isbrae, a major outlet glacier on Greenland's west coast, in the summer of 2012. Here, we develop and demonstrate a method to combine the line-of-sight velocity data from two synchronized radars to produce a 2-D velocity field from a single (3 min) interferogram. Results are compared with the more traditional feature-tracking data obtained from the same radar, averaged over a longer period. We demonstrate the potential and limitations of this new dual-radar approach for obtaining high spatial and temporal resolution 2-D velocity fields at outlet glaciers.{\textless}/p{\textgreater}10aglacier flow10aglacier geophysics10aglaciological instruments and methods1 aVoytenko, Denis1 aDixon, Timothy, H.1 aHolland, David, M.1 aCassotto, Ryan1 aHowat, Ian, M.1 aFahnestock, Mark, A.1 aTruffer, Martin1 aDe La Peña, Santiago  uhttps://www.cambridge.org/core/product/identifier/S0022143017000284/type/journal{\_}article