Modeling environmental bias and computing velocity field from data of Terra Nova Bay GPS network in Antarctica by means of a quasi-observation processing approach

Giuseppe Casula; Marco Dubbini; Angelo Galeandro

doi:10.3133/ofr20071047srp054

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Modeling environmental bias and computing velocity field from data of Terra Nova Bay GPS network in Antarctica by means of a quasi-observation processing approach

Giuseppe Casula·Marco Dubbini·Angelo Galeandro

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Abstract

A semi-permanent GPS network of about 30 vertices has been installed at Terra Nova Bay (TNB) near Ross Sea in Antarctica. A permanent GPS station TNB1 based on an Ashtech Z-XII dual frequency P-code GPS receiver with ASH700936D_M Choke Ring Antenna has been mounted on a reinforced concrete pillar built on bedrock since October 1998 and has recorded continuously up to the present. The semi-permanent network has been routinely surveyed every summer using high quality dual frequency GPS receivers with 24 hour sessions at 15 sec rate; data, metadata and solutions will be available to the scientific community at (http://www.geodant.unimore.it). We present the results of a distributed session approach applied to processing GPS data of the TNB GPS network, and based on Gamit/Globk 10.2-3 GPS analysis software. The results are in good agreement with other authors' computations and with many of the theoretical models.

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Source-reported bounding extent: -75.01° to -69.98° latitude; 160.76° to 171.32° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Giuseppe Casula, Marco Dubbini, Angelo Galeandro. 2007. Modeling environmental bias and computing velocity field from data of Terra Nova Bay GPS network in Antarctica by means of a quasi-observation processing approach. https://doi.org/10.3133/ofr20071047srp054

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