The Antarctic Regional GPS Network Densification: Status and Results

Matveev, Alexey J.; Milinevsky, Gennadi; Schenke, Hans-Werner; Shibuya, Kazuo; Sjöberg, Lars E.; Zakrajsek, Andrés F; Fritsche, Mathias; Rülke, Axel; Dietrich, Reinhard; Groh, Andreas; Knöfel, Christoph; Scheinert, Mirko; Capra, Alessandro; Cisak, Jan; Dongchen, E; Eiken, Trond; Fox, Adrian J.; Hothem, Larry D.; Johnston, Gary; Malaimani, E. C.

doi:10.1007/1345_2015_79

Cited by 4 publications

(1 citation statement)

References 24 publications

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“…On the other hand, GPS data collected from 1999 to 2001 at three stations located on Marie Byrd Land (MLB1-3) and another at McMurdo Station (MCM4) suggested that little spreading was currently occurring across the intervening Ross Embayment (Donnellan & Luyendyk, 2004). More recent GPS analysis also suggested western Antarctica plate motion is largely coherent with the rest of the plate and involves relative displacements of less than 1 mm/yr across the WARS (Matveev et al, 2015).…”

Section: Of 25mentioning

confidence: 99%

Satellite Gravity Constraints on the Antarctic Moho and Its Potential Isostatic Adjustments

Zhang

Frese

Shum

et al. 2020

Geochem Geophys Geosyst

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Section: Of 25mentioning

confidence: 99%

Satellite Gravity Constraints on the Antarctic Moho and Its Potential Isostatic Adjustments

Zhang

Frese

Shum

et al. 2020

Geochem Geophys Geosyst

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Reaction of a polar gravel‐spit system to atmospheric warming and glacier retreat as reflected by morphology and internal sediment geometries (South Shetland Islands, Antarctica)

Barión

Lindhorst

Schutter

et al. 2019

Earth Surf Processes Landf

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Sedimentary architecture and morphogenetic evolution of a polar bay‐mouth gravel‐spit system are revealed based on topographic mapping, sedimentological data, radiocarbon dating and ground‐penetrating radar investigations. Data document variable rates of spit progradation in reaction to atmospheric warming synchronous to the termination of the last glacial re‐advance (LGR, 0.45–0.25 ka BP), the southern hemisphere equivalent of the Little Ice Age cooling period. Results show an interruption of spit progradation that coincides with the proposed onset of accelerated isostatic rebound in reaction to glacier retreat. Spit growth resumed in the late 19th century after the rate of isostatic rebound decreased, and continues until today. The direction of modern spit progradation, however, is rotated northwards compared with the growth axis of the early post‐LGR spit. This is interpreted to reflect the shift and strengthening in the regional wind field during the last century. A new concept for the interplay of polar gravel‐spit progradation and glacio‐isostatic adjustment is presented, allowing for the prediction of future coastal evolution in comparable polar settings. © 2018 The Authors. Earth Surface Processes and Landforms published by John Wiley & Sons Ltd.

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Geodetic observations for constraining mantle processes in Antarctica

Scheinert

Engels

Schrama

et al. 2021

Memoirs

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Geodynamic processes in Antarctica such as glacial isostatic adjustment (GIA) and post-seismic deformation are measured by geodetic observations such as GNSS and satellite gravimetry. GNSS measurements have been comprising continuous measurements as well as episodic measurements since the mid-1990s. The estimated velocities typically reach an accuracy of 1 mm/a for horizontal and 2 mm/a for vertical velocities. However, the elastic deformation due to present-day ice-load change needs to be considered accordingly.Space gravimetry derives mass changes from small variations in the inter-satellite distance of a pair of satellites, starting with the GRACE satellite mission in 2002 and continuing with the GRACE-FO mission launched in 2018. The spatial resolution of the measurements is low (about 300 km) but the measurement error is homogeneous across Antarctica. The estimated trends contain signals from ice mass change, local and global GIA signal. To combine the strengths of the individual data sets statistical combinations of GNSS, GRACE and satellite altimetry data have been developed. These combinations rely on realistic error estimates and assumptions of snow density. Nevertheless, they capture signal that is missing from geodynamic forward models such as the large uplift in the Amundsen Sea sector due to low-viscous response to century-scale ice-mass changes.

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The Antarctic Regional GPS Network Densification: Status and Results

Cited by 4 publications

References 24 publications

Satellite Gravity Constraints on the Antarctic Moho and Its Potential Isostatic Adjustments

Satellite Gravity Constraints on the Antarctic Moho and Its Potential Isostatic Adjustments

Reaction of a polar gravel‐spit system to atmospheric warming and glacier retreat as reflected by morphology and internal sediment geometries (South Shetland Islands, Antarctica)

Geodetic observations for constraining mantle processes in Antarctica

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