ITRF coordinates and plate velocities from repeated GPS campaigns in Antarctica - an analysis based on different individual solutions

Dietrich, Reinhard; Dach, Rolf; Engelhardt, G.; Ihde, J.; Korth, Wilfried; Kutterer, Hansjörg; Lindner, K.; Mayer, Michael; Menge, Falko; Miller, Heinz; Müller, Carsten; Niemeier, Wolfgang; Perlt, J.; Pohl, M.; Salbach, H.; Schenke, Hans-Werner; Schöne, Tilo; Seeber, Günter; Veit, A.; Völksen, Christof

doi:10.1007/s001900000147

Cited by 83 publications

(55 citation statements)

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“…Until recently, many of the GPS sites have been co-located with Antarctic science stations around the ice sheet perimeter. Important additional observations are provided by the Scientific Committee for Antarctic Research (SCAR) GPS epoch campaign (e.g., Dietrich et al 2001) data collected starting in the early 1990 s, and from the mid-1990 s from the WAGN, TAMDEF, VLNDEF and other networks (e.g., Tregoning et al 2000;Zanutta et al 2008). Recent advances have included the array of POLENET sites installed under the US programme starting 2007-8 and further international deployments are also due in the next years.…”

Section: Antarcticamentioning

confidence: 99%

Improved Constraints on Models of Glacial Isostatic Adjustment: A Review of the Contribution of Ground-Based Geodetic Observations

et al. 2010

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The provision of accurate models of Glacial Isostatic Adjustment (GIA) is presently a priority need in climate studies, largely due to the potential of the Gravity Recovery and Climate Experiment (GRACE) data to be used to determine accurate and continent-wide assessments of ice mass change and hydrology. However, modelled GIA is 123Surv Geophys (2010) 31:465-507 DOI 10.1007/s10712-010-9100-4 uncertain due to insufficient constraints on our knowledge of past glacial changes and to large simplifications in the underlying Earth models. Consequently, we show differences between models that exceed several mm/year in terms of surface displacement for the two major ice sheets: Greenland and Antarctica. Geodetic measurements of surface displacement offer the potential for new constraints to be made on GIA models, especially when they are used to improve structural features of the Earth's interior as to allow for a more realistic reconstruction of the glaciation history. We present the distribution of presently available campaign and continuous geodetic measurements in Greenland and Antarctica and summarise surface velocities published to date, showing substantial disagreement between techniques and GIA models alike. We review the current state-of-the-art in ground-based geodesy (GPS, VLBI, DORIS, SLR) in determining accurate and precise surface velocities. In particular, we focus on known areas of need in GPS observation level models and the terrestrial reference frame in order to advance geodetic observation precision/accuracy toward 0.1 mm/year and therefore further constrain models of GIA and subsequent present-day ice mass change estimates.

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Section: Antarcticamentioning

confidence: 99%

Improved Constraints on Models of Glacial Isostatic Adjustment: A Review of the Contribution of Ground-Based Geodetic Observations

et al. 2010

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“…First, a geodetic project directed by the Scientific Committee on Antarctic Research (SCAR) has retrieved several years of regional epoch campaign data (Dietrich et al, 2001). Secondly, the geographic setting of the Peninsula renders it more vulnerable to fluctuations in climate and precipitation than elsewhere in Antarctica.…”

Section: Introductionmentioning

confidence: 99%

The influence of 5000 year-old and younger glacial mass variability on present-day crustal rebound in the Antarctic Peninsula

2014

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Assessment of Antarctic rebound is complicated by two issues: (1) The total ice volume at Last Glacial Maximum is contentious, with estimates ranging from just a few meters to several tens of meters of equivalent eustatic sea level rise. (2) The late-Holocene mass budget is also uncertain. Space-based geodesy may provide important data in the coming years for estimating the recent ice mass balance state of Antarctica. Toward this end, GPS has an important role for isolating the solid earth movements that are associated with postglacial rebound. Here we provide numerical examples of vertical motions that are predicted by coupling realistic glacial load histories to 20th century ice mass imbalance estimates for the Antarctic Peninsula. The main complexity revealed by these examples is the striking difference among predictions that have an oscillatory mass change during the last 5000 to 50 years, as opposed to those having a continuous (non-oscillatory) mass drawdown of the grounded ice sheet.

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“…The precision of the angular velocity determination is two orders less than the velocity values, and precision of stations velocities determination equals to about 1 mm/year. Figure 8 shows the positions of Euler poles, determined as average for the period (1996 -2014) in this paper, and other papers (Drewes, 1998(Drewes, , 2001(Drewes, , 2009Argus, 1991Argus, , 2011SOPAC, 2016;Altamimi, 2012;Dietrich, 2001Dietrich, , 2004Sella, 2002;Jiang WeiPing, 2009). …”

Section: Fig 2 Location Of Permanent Gnss Stations In Antarcticamentioning

confidence: 73%

Investigation of Changes of the Kinematic Parameters of Antarctic Tectonic Plate Using Data Observations of Permanent GNSS Stations

Tretyak

Forat

Holubinka

2017

Reports on Geodesy and Geoinformatics

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ITRF coordinates and plate velocities from repeated GPS campaigns in Antarctica - an analysis based on different individual solutions

Cited by 83 publications

References 0 publications

Improved Constraints on Models of Glacial Isostatic Adjustment: A Review of the Contribution of Ground-Based Geodetic Observations

Improved Constraints on Models of Glacial Isostatic Adjustment: A Review of the Contribution of Ground-Based Geodetic Observations

The influence of 5000 year-old and younger glacial mass variability on present-day crustal rebound in the Antarctic Peninsula

Investigation of Changes of the Kinematic Parameters of Antarctic Tectonic Plate Using Data Observations of Permanent GNSS Stations

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