(Table 2) Horizontal ice flow velocities, azimuths (relative to true north), and vertical ice-particle velocities in the vicinity of Vostok Station, Antarctica
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...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.855433 2024-09-15T17:44:06+00:00 (Table 2) Horizontal ice flow velocities, azimuths (relative to true north), and vertical ice-particle velocities in the vicinity of Vostok Station, Antarctica Wendt, Jens Dietrich, Reinhard Fritsche, Mathias Wendt, Anja Yuskevich, A V Kokhanov, Andrey Senatorov, Anton Lukin, Valeriy V Shibuya, Kazuo Doi, Koichiro MEDIAN LATITUDE: -78.438000 * MEDIAN LONGITUDE: 106.772000 * SOUTH-BOUND LATITUDE: -78.530000 * WEST-BOUND LONGITUDE: 106.320000 * NORTH-BOUND LATITUDE: -78.230000 * EAST-BOUND LONGITUDE: 107.250000 * MINIMUM ELEVATION: 3463.0 m * MAXIMUM ELEVATION: 3491.0 m 2006 text/tab-separated-values, 64 data points https://doi.pangaea.de/10.1594/PANGAEA.855433 https://doi.org/10.1594/PANGAEA.855433 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.855433 https://doi.org/10.1594/PANGAEA.855433 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess 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, https://doi.org/10.1111/j.1365-246X.2006.03061.x Azimuth standard deviation Calculated from GPS Elevation of event Event label GPS_CNTR GPS_EAST GPS_G100 GPS_G200 GPS_IS12 GPS_VC10 GPS_VC20 GPS_VOST GPS_VW06 GPS_WEST Latitude of event Longitude of event Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Time coverage Velocity Velocity magnitude dataset 2006 ftpangaea https://doi.org/10.1594/PANGAEA.85543310.1111/j.1365-246X.2006.03061.x 2024-07-24T02:31:33Z 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 flowline. An assessment of the local accretion rate at Vostok Station using the observed geodetic quantities yields an accretion rate in the same order of magnitude. Furthermore, the comparison of our geodetic observations with results inferred from ice-penetrating radar data indicates that the ice flow may not have changed significantly for several thousand years. Dataset Antarc* Antarctic Antarctica ice core Sea ice PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(106.320000,107.250000,-78.230000,-78.530000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Azimuth standard deviation Calculated from GPS Elevation of event Event label GPS_CNTR GPS_EAST GPS_G100 GPS_G200 GPS_IS12 GPS_VC10 GPS_VC20 GPS_VOST GPS_VW06 GPS_WEST Latitude of event Longitude of event Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Time coverage Velocity Velocity magnitude |
spellingShingle |
Azimuth standard deviation Calculated from GPS Elevation of event Event label GPS_CNTR GPS_EAST GPS_G100 GPS_G200 GPS_IS12 GPS_VC10 GPS_VC20 GPS_VOST GPS_VW06 GPS_WEST Latitude of event Longitude of event Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Time coverage Velocity Velocity magnitude Wendt, Jens Dietrich, Reinhard Fritsche, Mathias Wendt, Anja Yuskevich, A V Kokhanov, Andrey Senatorov, Anton Lukin, Valeriy V Shibuya, Kazuo Doi, Koichiro (Table 2) Horizontal ice flow velocities, azimuths (relative to true north), and vertical ice-particle velocities in the vicinity of Vostok Station, Antarctica |
topic_facet |
Azimuth standard deviation Calculated from GPS Elevation of event Event label GPS_CNTR GPS_EAST GPS_G100 GPS_G200 GPS_IS12 GPS_VC10 GPS_VC20 GPS_VOST GPS_VW06 GPS_WEST Latitude of event Longitude of event Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Time coverage Velocity Velocity magnitude |
description |
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 flowline. An assessment of the local accretion rate at Vostok Station using the observed geodetic quantities yields an accretion rate in the same order of magnitude. Furthermore, the comparison of our geodetic observations with results inferred from ice-penetrating radar data indicates that the ice flow may not have changed significantly for several thousand years. |
format |
Dataset |
author |
Wendt, Jens Dietrich, Reinhard Fritsche, Mathias Wendt, Anja Yuskevich, A V Kokhanov, Andrey Senatorov, Anton Lukin, Valeriy V Shibuya, Kazuo Doi, Koichiro |
author_facet |
Wendt, Jens Dietrich, Reinhard Fritsche, Mathias Wendt, Anja Yuskevich, A V Kokhanov, Andrey Senatorov, Anton Lukin, Valeriy V Shibuya, Kazuo Doi, Koichiro |
author_sort |
Wendt, Jens |
title |
(Table 2) Horizontal ice flow velocities, azimuths (relative to true north), and vertical ice-particle velocities in the vicinity of Vostok Station, Antarctica |
title_short |
(Table 2) Horizontal ice flow velocities, azimuths (relative to true north), and vertical ice-particle velocities in the vicinity of Vostok Station, Antarctica |
title_full |
(Table 2) Horizontal ice flow velocities, azimuths (relative to true north), and vertical ice-particle velocities in the vicinity of Vostok Station, Antarctica |
title_fullStr |
(Table 2) Horizontal ice flow velocities, azimuths (relative to true north), and vertical ice-particle velocities in the vicinity of Vostok Station, Antarctica |
title_full_unstemmed |
(Table 2) Horizontal ice flow velocities, azimuths (relative to true north), and vertical ice-particle velocities in the vicinity of Vostok Station, Antarctica |
title_sort |
(table 2) horizontal ice flow velocities, azimuths (relative to true north), and vertical ice-particle velocities in the vicinity of vostok station, antarctica |
publisher |
PANGAEA |
publishDate |
2006 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.855433 https://doi.org/10.1594/PANGAEA.855433 |
op_coverage |
MEDIAN LATITUDE: -78.438000 * MEDIAN LONGITUDE: 106.772000 * SOUTH-BOUND LATITUDE: -78.530000 * WEST-BOUND LONGITUDE: 106.320000 * NORTH-BOUND LATITUDE: -78.230000 * EAST-BOUND LONGITUDE: 107.250000 * MINIMUM ELEVATION: 3463.0 m * MAXIMUM ELEVATION: 3491.0 m |
long_lat |
ENVELOPE(106.320000,107.250000,-78.230000,-78.530000) |
genre |
Antarc* Antarctic Antarctica ice core Sea ice |
genre_facet |
Antarc* Antarctic Antarctica ice core Sea ice |
op_source |
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, https://doi.org/10.1111/j.1365-246X.2006.03061.x |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.855433 https://doi.org/10.1594/PANGAEA.855433 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.85543310.1111/j.1365-246X.2006.03061.x |
_version_ |
1810491436677726208 |