Modeling Earth's post-glacial rebound

Glacial Crustal Rebound, Sea Levels and Shorelines

Gas hydrates, solid composites of biogenically derived gasses (mainly methane) combined with water ice, may be present in marine sediments, especially at continental margins, under the correct pressure and temperature conditions. Gas hydrates are detected by direct sampling, and inferred from seismic reSection data when a strong bottom-simulating reSector (BSR) is produced by the seismic veloci...

Numerical solution methods for glacial rebound models

We consider the finite element discretization of the system of partial differential equations describing the stress field and the displacements in a (visco)elastic inhomogeneous layered media in response to a surface load. The underlying physical phenomenon, which is modelled, is glacial advance and recession, and the resulting crustal stress state. We analyse the elastic case in more detail an...

Are post-glacial rebound model predictions consistent with the global space-geodetic secular velocity field?

On global scales the present-day secular velocity field of the Earth’s surface is dominated by two processes, namely plate tectonics and post-glacial isostatic rebound. Over the last 15 years, various empirical plate motion models have been derived and constrained by modern space-geodetic observations. Most of these models describe the global horizontal motions for a set of rigid plates distrib...

Theories and Modeling of Glacial–Interglacial Cycles and Glacial Inception

Bacteria in post-glacial freshwater sediments.

Prokaryote communities in post-glacial profundal freshwater sediments of Windermere, representing 10-12,000 years of deposition, were examined for culturability, viability and community structure. The potential for active geochemical cycles was inferred from the presence of specific groups of bacteria. Direct count procedures revealed 10(12) cells (g dry wt sediment)-1 in the surface sediments,...