# Ice velocity data for Vega Island, Antarctica
#
# Source:  P. Skvarca and H. De Angelis, Instituto Antártico Argentino (IAA)
#
# Contribution to VELMAP Project made by Glaciology Division, Instituto Antártico
# Argentino (IAA), Cerrito 1248, 1010 Buenos Aires, Argentina.
# Contact:  Ing.  Pedro. Skvarca and Lic. Hernán. De Angelis, Instituto Antártico
# Argentino (IAA)
#
# Description of data:
#
# These data are a result of field surveys carried out by IAA
# Glaciology Division. They include "Glaciar Bahía del Diablo", a small
# outlet glacier located on Vega Island, Antarctic Peninsula.
#
# Measurement techniques:
#
# All data were obtained by means of static differential GPS measurements. In
# each area the positions were corrected differentially to previously
# established reference points in Devil's Bay, Vega Island.  Stake positions
# are referred to the top of each stake and care has been taken to correct for
# tilting, if any.  Furthermore, in all cases the GPS measurements were
# pre-planned in order to ensure good satellite constellation distribution
# during the survey.
#
# Error sources and error estimates:
#
# During the GPS surveys the main error source depends on baseline length
# (distance between the rover and base receiver), error which increases with
# distance. Errors reported for ice velocities were derived from innacuracies
# in positions obtained in the field, given by the Trimble postprocessing
# software.
#
# References:
#
# Rott, H., W. Rack, T. Nagler and P. Skvarca. 1998. Climatically induced
# retreat and collapse of northern Larsen Ice Shelf, Antarctic Peninsula.
# Annals of Glaciology 27, 86-92.
#
# Skvarca, P., W. Rack and H. Rott. 1999. 34 year satellite time series to
# monitor characteristics, extent and dynamics of Larsen B Ice Shelf,
# Antarctic Peninsula. Annals of Glaciology, Vol. 29, 255-260.
#
#LATITUDE   LONGITUDE   VELOCITY Azimuth  ErrSp ErrBr  Date1   Date2       STATION  Notes
-63.828080  -57.351029  2.4   62.338  0.27  0.036  1999-12-02  2000-01-02  iaa_gbd_1
-63.829719  -57.348532  2.1   70.172  0.26  0.029  1998-19-02  2000-01-02  iaa_gbd_4
-63.826630  -57.353325  2.8   60.695  0.27  0.027  1999-12-02  2000-22-02  iaa_gbd_5
-63.830632  -57.347200  1.0   74.750  0.25  0.141  1999-12-02  2000-22-02  iaa_gbd_6
-63.825809  -57.354736  1.3   57.056  0.28  0.048  1999-12-02  2000-01-02  iaa_gbd_7
-63.830103  -57.359597  3.4   61.738  0.27  0.024  1999-12-02  2000-01-02  iaa_gbd_II
-63.832044  -57.361290  3.5   67.820  0.26  0.016  1998-20-02  2000-01-02  iaa_gbd_V
-63.826967  -57.363785  1.4   68.570  0.26  0.086  1999-17-02  2000-01-02  iaa_gbd_VI
-63.829377  -57.398070  7.8   98.029  0.17  0.015  1998-19-02  2000-01-02  iaa_gbd_C
-63.830866  -57.371203  5.2   84.666  0.22  0.018  1998-19-02  2000-01-02  iaa_gbd_D
-63.824470  -57.428308  14.7 109.120  0.12  0.018  1999-21-02  2000-07-02  iaa_gbd_F
-63.826450  -57.446829  7.6   63.917  0.27  0.013  1999-21-02  2000-07-02  iaa_gbd_G
-63.826914  -57.347299  1.6   54.927  0.28  0.030  1999-12-02  2000-22-02  iaa_gbd_W
-63.828080  -57.354484  3.4   63.624  0.27  0.014  1998-19-02  2000-01-02  iaa_gbd_Y