| Summary: | Data were collected during June of 2011 on the west coast of Greenland. Antennas were mounted on aluminum poles drilled into the ice with a portable steam drill to a depth of 6 m. GPS data were logged every 15 seconds, and positions were determined by carrier-phase differential processing using TRACK software with base station KAGA (25 km to the south) as a reference and final International GNSS Service satellite orbits. Each 15-second GPS time series was re-sampled to a six-minute interval, and a 1-hr moving average was then applied to reduce the siderial noise. Data are provided as a matlab structure variable with the following fields: T=time [julian days for the year 2011] X , Y, Z = position [in m] Mn_interval and mn_window [Internal descriptor] Goodfraction [Internal descriptor] V24 [24 hours averaged speed] V24q [internal descriptor] V12 [12 hours averaged speed] V12q [internal descriptor] V6 [6 hours averaged speed] V6q [6 internal descriptor] V1 [1 hour averaged speed] V1q [internal descriptor]
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