Sentences with phrase «ocean mass redistribution»

In this study we examine the impact of SAL effects on ocean mass redistribution under different surface loads (land hydrology, atmospheric pressure, ocean dynamics), using a number of geophysical models and GRACE observations.

Not exact matches

In one study published in Geophysical Research Letters in 2007, scientists at the Max Planck Institute for Meteorology in Hamburg, Germany, estimated the mass redistribution resulting from ocean warming would shorten the day by 120 microseconds, or nearly one tenth of a millisecond, over the next two centuries.

But when it comes to the gravitational redistribution of ocean mass, it is the ice masses furthest away to which you should pay the most attention.

The latter is almost linearly related to changes in ice sheet volume; the former, however, is influenced by a range of factors, including atmosphere / ocean dynamics and changes in Earth's gravitational field, rotation, and crustal and the mantle deformation associated with the redistribution of mass between land ice and the ocean.

Regional variations arise because the Earth's gravity field is affected in multiple ways by the melt of ice, due to the direct effect of surface mass changes (the gravity field is determined by the distribution of mass), the consequent deformation of the Solid Earth (removing a load causes the Earth's surface to rebound, which in turn changes the distribution of the Earth's mass), the consequent redistribution of ocean water (the ocean surface is shaped by the gravity filed) and perturbations of the Earth's rotation axis (because of mass redistribution).

We do not blame glacial eustasy for those oscillations, rather ocean dynamic factors like drastic changes in evaporation / precipitation or redistributions of the water masses.

The GRACE observations over Antarctica suggest a near - zero change due to combined ice and solid earth mass redistribution; the magnitude of our GIA correction is substantially smaller than previous models have suggested and hence we produce a systematically lower estimate of ice mass change from GRACE data: we estimate that Antarctica has lost 69 ± 18 Gigatonnes per year (Gt / yr) into the oceans over 2002 - 2010 — equivalent to +0.19 mm / yr globally - averaged sea level change, or about 6 % of the sea - level change during that period.

For while a steady rise is expected, it is likely to vary greatly in particular locations, as a result of factors ranging from the circulation of the oceans to the redistribution of mass on the planet.

-- The third, being the observed destabilization of the geosphere due to both the pace of terrestrial ice loss and relatively sudden and uneven climatic redistribution of the oceans» mass, with a consequent rise in seismic events and in volcanoes» cooling sulphate emissions, which have (according to Prof. McGuire, adviser to Munich Re on vulcanism risks) accelerated slowly on a 1.25 % / yr trend over the last 30 years.

We use realistic estimates of mass redistribution from ice mass loss and land water storage to quantify the resulting ocean bottom deformation and its effect on global and regional ocean volume change estimates.

Present - day mass redistribution increases the total ocean mass and, on average, causes the ocean bottom to subside elastically.

Changes in Earth's rotation from the redistribution of mass as the ice melts and ocean responds also contribute slightly to local deviations from the global average.