Continuous GPS (static) data from Ross Ice Shelf near its iceberg calving frontEntry ID: macayeal_cont_GPS_Ross_Ice_Shelf_0229546
Abstract: In November, 2005, three geodetic GPS receivers were deployed on the Ross Ice Shelf near its ice front to observe short-term fluctuations in ice-shelf velocity (associated with tidal forcing and other phenomena). Two stations were deployed on either side of a large rift that is expected to eventually create the next iceberg to calve from the Ross Ice Shelf (called "Nascent Iceberg"). One station ... was deployed at a location near station R13, occupied in 1979 during the RIGGS project (Thomas et al., 1984), to determine if the near-ice-front part of the Ross Ice Shelf has significantly changed its long-term flow since the late 1970's.
The GPS receivers were operated with a 15 second sampling rate for up to 21 days (time span was variable, but each receiver operated for greater than the spring tide to neap tide 14-day cycle). Data were Processed by Matt King of the University of Newcastle, U. K., using up to date point positioning algorithms. The results are position, vertical elevation time series that are useful for the study of ice-shelf kinematics near the calving front.
Trimble R7 model GPS receivers with standard (discus style) antennas were deployed on standard survey tripods buried in the snow (receiver was buried beneath the tripod) during November 2005. A solar panel was mounted on a post near by and was used to charge a single 12-v battery through a charge controller. Power was applied continuously. Data was given to Dr. Matt King of the University of Newcastle to process (see data header).
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Data Set Citation
Dataset Originator/Creator: Douglas R. MacAyeal
Dataset Title: Giant Icebergs of the Ross Sea, in situ drift and weather measurements
This data set description is a member of a collection. The collection is described in
Start Date: 2005-10-29Stop Date: 2005-11-21
Latitude Resolution: .05 m
Longitude Resolution: .05 m
Horizontal Resolution Range: < 1 meter
Vertical Resolution: .1 m
Vertical Resolution Range: < 1 meter
Temporal Resolution: 15-sec sample rate, standard geodetic GPS resolution
Temporal Resolution Range: 1 second - < 1 minute
ISO Topic Category
Access Constraints Data is free for anyone to use. No constraints.
Use Constraints Data is free for anyone to use. No constraints.
Data Set Progress
Distribution Size: 80 Mbytes
Email: drm7 at midway.uchicago.edu
Department of Geophysical Sciences University of Chicago 5734 S. Ellis Ave
Province or State: IL
Postal Code: 60637
Role: TECHNICAL CONTACT
Email: kmbrunt at gmail.com
University of California San Diego
City: La Jolla
Province or State: California
Postal Code: 92093
Role: TECHNICAL CONTACT
University of Newcastle
Brunt, K. M., 2008. Tidal Motion of the Ross Ice Shelf and its Interaction with the Siple Coast Ice Streams, Antarctica. (PhD dissertation, University of Chicago, Chicago, IL, USA, 202 pages).
Creation and Review Dates
DIF Creation Date: 2008-09-19
Last DIF Revision Date: 2009-01-08