Outputs (15)

Postseismic Deformation in the Northern Antarctic Peninsula Following the 2003 and 2013 Scotia Sea Earthquakes (2023)
Journal Article
Nield, G. A., King, M. A., Koulali, A., & Samrat, N. (2023). Postseismic Deformation in the Northern Antarctic Peninsula Following the 2003 and 2013 Scotia Sea Earthquakes. Journal of Geophysical Research: Solid Earth, 128(10), e2023JB026685. https://doi.org/10.1029/2023jb026685

Large earthquakes in the vicinity of Antarctica have the potential to cause postseismic viscoelastic deformation affecting measurements of displacement that are used to constrain models of glacial isostatic adjustment (GIA). In November 2013, a Mw 7.... Read More about Postseismic Deformation in the Northern Antarctic Peninsula Following the 2003 and 2013 Scotia Sea Earthquakes.

Glacial isostatic adjustment and postseismic deformation in Antarctica (2022)
Journal Article
van der Wal, W., Barletta, V., Nield, G., & van Calcar, C. (2023). Glacial isostatic adjustment and postseismic deformation in Antarctica. Memoirs, 56(1), https://doi.org/10.1144/m56-2022-13

This chapter reviews glacial isostatic adjustment (GIA) and post-seismic deformation in Antarctica. It discusses numerical models and their inputs, and observations and inferences that have been made from them. Both processes are controlled by mantle... Read More about Glacial isostatic adjustment and postseismic deformation in Antarctica.

A global, spherical finite-element model for post-seismic deformation using Abaqus (2022)
Journal Article
Nield, G. A., King, M. A., Steffen, R., & Blank, B. (2022). A global, spherical finite-element model for post-seismic deformation using Abaqus. Geoscientific Model Development, 15(6), 2489-2503. https://doi.org/10.5194/gmd-15-2489-2022

We present a finite-element model of post-seismic solid Earth deformation built in the software package Abaqus (version 2018). The model is global and spherical, includes self-gravitation and is built for the purpose of calculating post-seismic defor... Read More about A global, spherical finite-element model for post-seismic deformation using Abaqus.

GPS-observed elastic deformation due to surface mass balance variability in the Southern Antarctic Peninsula (2022)
Journal Article
Koulali, A., Whitehouse, P., Clarke, P., van den Broeke, M., Nield, G., King, M., …Wilson, T. (2022). GPS-observed elastic deformation due to surface mass balance variability in the Southern Antarctic Peninsula. Geophysical Research Letters, 49(4), Article e2021GL097109. https://doi.org/10.1029/2021gl097109

In Antarctica, Global Positioning System (GPS) vertical time series exhibit non-linear signals over a wide range of temporal scales. To explain these non-linearities, a number of hypotheses have been proposed, among them the short-term rapid solid Ea... Read More about GPS-observed elastic deformation due to surface mass balance variability in the Southern Antarctic Peninsula.

A new open-source viscoelastic solid earth deformation module implemented in Elmer (v8.4) (2020)
Journal Article
Zwinger, T., Nield, G. A., Ruokolainen, J., & King, M. A. (2020). A new open-source viscoelastic solid earth deformation module implemented in Elmer (v8.4). Geoscientific Model Development, 13(3), 1155-1164. https://doi.org/10.5194/gmd-13-1155-2020

We present a new, open-source viscoelastic solid earth deformation model, Elmer/Earth. Using the multi-physics finite-element package Elmer, a model to compute viscoelastic material deformation has been implemented into the existing linear elasticity... Read More about A new open-source viscoelastic solid earth deformation module implemented in Elmer (v8.4).

Mass balance of the Greenland Ice Sheet from 1992 to 2018 (2019)
Journal Article
Team, T. I., Nield, G., & Whitehouse, P. (2020). Mass balance of the Greenland Ice Sheet from 1992 to 2018. Nature Communications, 579, 233-239. https://doi.org/10.1038/s41586-019-1855-2

In recent decades, the Greenland Ice Sheet has been a major contributor to global sea-level rise1,2, and it is expected to be so in the future3. Although increases in glacier flow4–6 and surface melting7–9 have been driven by oceanic10–12 and atmosph... Read More about Mass balance of the Greenland Ice Sheet from 1992 to 2018.

Mapping crustal shear wave velocity structure and radial anisotropy beneath West Antarctica using seismic ambient noise (2019)
Journal Article
O'Donnell, J., Brisbourne, A., Stuart, G., Dunham, C., Yang, Y., Nield, G., …Winberry, J. (2019). Mapping crustal shear wave velocity structure and radial anisotropy beneath West Antarctica using seismic ambient noise. Geochemistry, Geophysics, Geosystems, 20(11), 5014-5037. https://doi.org/10.1029/2019gc008459

Using 8‐25s period Rayleigh and Love wave phase velocity dispersion data extracted from seismic ambient noise, we (i) model the 3D shear wave velocity structure of the West Antarctic crust and (ii) map variations in crustal radial anisotropy. Enhance... Read More about Mapping crustal shear wave velocity structure and radial anisotropy beneath West Antarctica using seismic ambient noise.

The uppermost mantle seismic velocity structure of West Antarctica from Rayleigh wave tomography: insights into tectonic structure and geothermal heat flow (2019)
Journal Article
O'Donnell, J., Stuart, G., Brisbourne, A., Selway, K., Yang, Y., Nield, G., …Winberry, J. (2019). The uppermost mantle seismic velocity structure of West Antarctica from Rayleigh wave tomography: insights into tectonic structure and geothermal heat flow. Earth and Planetary Science Letters, 522, 219-233. https://doi.org/10.1016/j.epsl.2019.06.024

We present a shear wave model of the West Antarctic upper mantle to ∼200 km depth with enhanced regional resolution from the 2016-2018 UK Antarctic Seismic Network. The model is constructed from the combination of fundamental mode Rayleigh wave phase... Read More about The uppermost mantle seismic velocity structure of West Antarctica from Rayleigh wave tomography: insights into tectonic structure and geothermal heat flow.

Late Holocene relative sea levels near Palmer Station, northern Antarctic Peninsula, strongly controlled by late Holocene ice-mass changes (2018)
Journal Article
Simms, A., Whitehouse, P., Simkins, L., Nield, G., DeWitt, R., & Bentley, M. (2018). Late Holocene relative sea levels near Palmer Station, northern Antarctic Peninsula, strongly controlled by late Holocene ice-mass changes. Quaternary Science Reviews, 199, 49-59. https://doi.org/10.1016/j.quascirev.2018.09.017

Many studies of Holocene relative sea-level (RSL) changes across Antarctica assume that their reconstructions record uplift from glacial isostatic adjustment caused by the demise of the Last Glacial Maximum (LGM) ice sheets. However, recent analysis... Read More about Late Holocene relative sea levels near Palmer Station, northern Antarctic Peninsula, strongly controlled by late Holocene ice-mass changes.

Mass balance of the Antarctic ice sheet from 1992 to 2017 (2018)
Journal Article
Shepherd, A., Ivins, E., Rignot, E., Smith, B., van den Broeke, M., Velicogna, I., …Wouters, B. (2018). Mass balance of the Antarctic ice sheet from 1992 to 2017. Nature, 558(7709), 219-222. https://doi.org/10.1038/s41586-018-0179-y

The Antarctic Ice Sheet is an important indicator of climate change and driver of sea-level rise. Here we combine satellite observations of its changing volume, flow and gravitational attraction with modelling of its surface mass balance to show that... Read More about Mass balance of the Antarctic ice sheet from 1992 to 2017.