Results 31 to 40 of about 683,227 (203)

Sea-level records from the U.S. mid-Atlantic constrain Laurentide Ice Sheet extent during Marine Isotope Stage 3

Nature Communications, 2017
Surprisingly high Pleistocene sea-level markers on the Virginia and North Carolina shoreline are inconsistent with models of Laurentide ice sheet volume during Marine Isotope Stage 3. Here, Picoet al.
T Pico, J. R. Creveling, J. X. Mitrovica
doaj   +1 more source

The glacial systems model (GSM) Version 25G [PDF]

Geoscientific Model Development
We document the glacial system model (GSM), which is designed for large ensemble ice sheet modelling in glacial cycle contexts. A distinguishing feature is the extent to which it addresses relevant forcing and process uncertainties. The GSM has evolved
L. Tarasov, B. S. Lecavalier, B. S. Lecavalier, K. Hank, D. Pollard, D. Pollard   +5 more
doaj   +1 more source

Modeling Viscoelastic Solid Earth Deformation Due To Ice Age and Contemporary Glacial Mass Changes in ASPECT

Geochemistry, Geophysics, Geosystems, 2023
The redistribution of past and present ice and ocean loading on Earth's surface causes solid Earth deformation and geoid changes, known as glacial isostatic adjustment.
Maaike F. M. Weerdesteijn, John B. Naliboff, Clinton P. Conrad, Jesse M. Reusen, Rebekka Steffen, Timo Heister, Jiaqi Zhang   +6 more
doaj   +1 more source

Evaluating Greenland glacial isostatic adjustment corrections using GRACE, altimetry and surface mass balance data

Environmental Research Letters, 2014
Glacial isostatic adjustment (GIA) represents a source of uncertainty for ice sheet mass balance estimates from the Gravity Recovery and Climate Experiment (GRACE) time-variable gravity measurements.
Tyler C Sutterley, Isabella Velicogna, Beata Csatho, Michiel van den Broeke, Soroush Rezvan-Behbahani, Greg Babonis   +5 more
doaj   +1 more source

Empirical estimation of present-day Antarctic glacial isostatic adjustment and ice mass change [PDF]

The Cryosphere, 2014
This study explores an approach that simultaneously estimates Antarctic mass balance and glacial isostatic adjustment (GIA) through the combination of satellite gravity and altimetry data sets. The results improve upon previous efforts by incorporating a
B. C. Gunter, O. Didova, R. E. M. Riva, S. R. M. Ligtenberg, J. T. M. Lenaerts, M. A. King, M. R. van den Broeke, T. Urban   +7 more
doaj   +1 more source

A dynamic continental runoff routing model applied to the last Northern Hemisphere deglaciation [PDF]

Geoscientific Model Development, 2012
We describe and evaluate a dynamical continental runoff routing model for the Northern Hemisphere that calculates the runoff pathways in response to topographic modifications due to changes in ice thickness and isostatic adjustment.
H. Goelzer, I. Janssens, J. Nemec, P. Huybrechts   +3 more
doaj   +1 more source

On the gravity and geoid effects of glacial isostatic adjustment in Fennoscandia - a short note

Journal of Geodetic Science, 2015
Many geoscientists argue that there is a gravity low of 10-30 mGal in Fennoscandia as a remaining fingerprint of the last ice age and load, both vanished about 10 kyr ago.
Sjöberg L. E.
doaj   +1 more source

ICESHEET 1.0: a program to produce paleo-ice sheet reconstructions with minimal assumptions [PDF]

Geoscientific Model Development, 2016
We describe a program that produces paleo-ice sheet reconstructions using an assumption of steady-state, perfectly plastic ice flow behaviour. It incorporates three input parameters: ice margin, basal shear stress and basal topography.
E. J. Gowan, P. Tregoning, A. Purcell, J. Lea, O. J. Fransner, R. Noormets, J. A. Dowdeswell   +6 more
doaj   +1 more source

Simulation of a fully coupled 3D glacial isostatic adjustment – ice sheet model for the Antarctic ice sheet over a glacial cycle [PDF]

Geoscientific Model Development, 2023
Glacial isostatic adjustment (GIA) has a stabilizing effect on the evolution of the Antarctic ice sheet by reducing the grounding line migration following ice melt. The timescale and strength of this feedback depends on the spatially varying viscosity of
C. J. van Calcar, C. J. van Calcar, R. S. W. van de Wal, R. S. W. van de Wal, B. Blank, B. de Boer, W. van der Wal, W. van der Wal   +7 more
doaj   +1 more source

Supplemental Material: Excess ice loads in the Indian Ocean sector of East Antarctica during the last glacial period

, 2021
Sea-level dataset and glacial isostatic adjustment modeling results.
Takeshige Ishiwa (7883555), et al. (281964)   +1 more
core   +1 more source