Inference of the timescale‐dependent apparent viscosity structure in the upper mantle beneath Greenland

GJG Paxman, HCP Lau, J Austermann… - AGU …, 2023 - Wiley Online Library
Contemporary crustal uplift and relative sea level (RSL) change in Greenland is caused by
the response of the solid Earth to ongoing and historical ice mass change. Glacial isostatic …

Decadal to centennial timescale mantle viscosity inferred from modern crustal uplift rates in Greenland

S Adhikari, GA Milne, L Caron, SA Khan… - Geophysical …, 2021 - Wiley Online Library
The observed crustal uplift rates in Greenland are caused by the combined response of the
solid Earth to both ongoing and past surface mass changes. Existing elastic Earth models …

Frequency dependent mantle viscoelasticity via the complex viscosity: Cases from Antarctica

HCP Lau, J Austermann, BK Holtzman… - Journal of …, 2021 - Wiley Online Library
Studies of glacial isostatic adjustment (GIA) often use paleoshorelines and present‐day
deformation to constrain the viscosity of the mantle and the thickness of the elastic …

Inference of thermodynamic state in the asthenosphere from anelastic properties, with applications to North American upper mantle

C Havlin, BK Holtzman, E Hopper - Physics of the Earth and Planetary …, 2021 - Elsevier
Inference of thermodynamic state and full-spectrum mechanical behavior of the lithosphere
and asthenosphere is a central problem in geophysics, implicating our understanding of the …

Mayotte 2018 eruption likely sourced from a magmatic mush

T Mittal, JS Jordan, L Retailleau, F Beauducel… - Earth and Planetary …, 2022 - Elsevier
Despite significant advancements in understanding crustal melt transport, determining the
shallow magmatic architecture at any given volcanic system remains a significant challenge …

The effect of lateral variations in Earth structure on Last Interglacial sea level

J Austermann, MJ Hoggard, K Latychev… - Geophysical Journal …, 2021 - academic.oup.com
It is generally agreed that the Last Interglacial (LIG;∼ 130–115 ka) was a time when global
average temperatures and global mean sea level were higher than they are today. However …

Notes on a compressible extended Burgers model of rheology

ER Ivins, L Caron, S Adhikari… - Geophysical Journal …, 2022 - academic.oup.com
Constitutive theory for viscoelasticity has broad application to solid mantle or ice
deformations driven by tides, surface mass variations, and post-seismic flow. Geophysical …

Effect of lateral and stress‐dependent viscosity variations on GIA induced uplift rates in the Amundsen Sea Embayment

B Blank, V Barletta, H Hu, F Pappa… - Geochemistry …, 2021 - Wiley Online Library
Accurate glacial isostatic adjustment (GIA) models are required for correcting measurements
of mass change in Antarctica and for improving knowledge of the sub‐surface, especially in …

Transient rheology in sea level change: implications for meltwater pulse 1A

HCP Lau - Earth and Planetary Science Letters, 2023 - Elsevier
Ice mass and sea-level changes occur at many timescales inducing glacial isostatic
adjustment (GIA). Typically, the solid Earth is treated as a Maxwell viscoelastic solid when …

Identifying geographical patterns of transient deformation in the geological sea level record

KM Simon, REM Riva, T Broerse - Journal of Geophysical …, 2022 - Wiley Online Library
In this study, we examine the effect of transient mantle creep on the prediction of glacial
isostatic adjustment (GIA) signals. Specifically, we compare predictions of relative sea level …