(Table 2) Horizontal ice flow velocities, azimuths (relative to true north), and vertical ice-particle velocities in the vicinity of Vostok Station, Antarctica ...

• Main Authors: Wendt, Jens, Dietrich, Reinhard, Fritsche, Mathias, Wendt, Anja, Yuskevich, A V, Kokhanov, Andrey, Senatorov, Anton, Lukin, Valeriy V, Shibuya, Kazuo, Doi, Koichiro
• Format: Dataset
• Language: English
• Published: PANGAEA 2006
• Subjects: Event label; Latitude of event; Longitude of event; Elevation of event; Time coverage; Velocity magnitude; Velocity, standard deviation; Azimuth; Azimuth, standard deviation; Calculated from GPS; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarctic; Arctic; Austral; Fritsche; Lake Vostok; Vostok Station; Antarc*; Antarctica; ice core; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.855433; https://doi.pangaea.de/10.1594/PANGAEA.855433

In the austral summer seasons 2001/02 and 2002/03, Global Positioning System (GPS) data were collected in the vicinity of Vostok Station to determine ice flow velocities over Lake Vostok. Ten GPS sites are located within a radius of 30 km around Vostok Station on floating ice as well as on grounded ice to the east and to the west of the lake. Additionally, a local deformation network around the ice core drilling site 5G-1 was installed. The derived ice flow velocity for Vostok Station is 2.00 m/a ± 0.01 m/a. Along the flowline of Vostok Station an extension rate of about 10**-5/a (equivalent to 1 cm/km/a) was determined. This significant velocity gradient results in a new estimate of 28700 years for the transit time of an ice particle along the Vostok flowline from the bedrock ridge in the southwest of the lake to the eastern shoreline. With these lower velocities compared to earlier studies and, hence, larger transit times the basal accretion rate is estimated to be 4 mm/a along a portion of the Vostok ... : Supplement to: Wendt, Jens; Dietrich, Reinhard; Fritsche, Mathias; Wendt, Anja; Yuskevich, A V; Kokhanov, Andrey; Senatorov, Anton; Lukin, Valeriy V; Shibuya, Kazuo; Doi, Koichiro (2006): Geodetic observations of ice flow velocities over the southern part of subglacial Lake Vostok, Antarctica, and their glaciological implications. Geophysical Journal International, 166(3), 991-998 ...