Sentences with phrase «[glacial isostatic adjustment»

One is the natural sinking of land called glacio - isostatic adjustment.

Konfal, S. A., Wilson, T. J., Bevis, M. G., Kendrick, E. C., Dalziel, I. W., Smalley, R., Willis, M. J., Heeszel, D. S., Wiens, D. A., (2013), GPS observations of glacial isostatic adjustment into the Antarctic Interior, Abstract G43B - 0981 presented at 2013 Fall Meeting, AGU, San Francisco, Calif., 9 - 13 Dec..

«Palaeoshoreline records of glacial isostatic adjustment in the Dry Valleys region, Antarctica.»

Understanding glacial isostatic adjustment and ice mass change in Antarctica using integrated GPS and seismology observations.

Kemp and colleagues used salt marshes in North Carolina, where the land has steadily sunk by about two meters in the past two millennia due to glacial isostatic adjustment.

«Data from GPS measurements and carbon dating of marsh sediments indicate that regional land subsidence in response to glacial isostatic adjustment in the southern Chesapeake Bay region may have a current rate of about 1 mm / yr (Engelhart and others, 2009; Engelhart and Horton, 2012).

But as you have just pointed out, the signal of glacial isostatic adjustment is now smaller than the signal derived from GRACE.

Thicker ice sheets can be more resistant to melting by having colder surfaces (but also depress the crust more, so that when melting occurs, it may leave ocean instead of land (isostatic adjustment being a slow process — from memory, a timescale of ~ 15,000 years?)

Our physical patterns are based on the physics of glacier / ice sheet melt (static equioibrium fingerprints), glacial isostatic adjustment models, and an ensemble of GCMs to inform the ocean dynamic contribution.

This update also reversed the isostatic adjustment that they put in earlier this year.

Vertical land movements such as resulting from glacial isostatic adjustment (GIA), tectonics, subsidence and sedimentation influence local sea level measurements but do not alter ocean water volume; nonetheless, they affect global mean sea level through their alteration of the shape and hence the volume of the ocean basins containing the water.

I covered the isostatic adjustment here and the previous update here.

Isostatic adjustment will continue in North America as estimates based on depth of ice indicate total depression at 400 m (1300 feet).

You really need to look at multi-decadal time periods to determine trends, as in Church and White 2011 who found «1900 to 2009 is 1.7 ± 0.2 mm / year and since 1961 is 1.9 ± 0.4 mm / year» and «For 1993 — 2009 and after correcting for glacial isostatic adjustment, the estimated rate of rise is 3.2 ± 0.4 mm / year from the satellite data and 2.8 ± 0.8 mm / year from the in situ data».

Hi Chris - yes the uncertainties are large, much of which is down to the fact that isostatic adjustment may have affected raised shorelines in either direction.

Gravity measurements of the ice - mass loss in Greenland and Antarctica are complicated by glacial isostatic adjustment.

Some groups have tried to develop models of the rebounding land, so that sea level researchers can apply «Glacial Isostatic Adjustments» (GIA) to their data to correct for the effects.

Furthermore due to glacial isostatic adjustments, 3 to 4 inches of that relative sea level rise is due to land subsidence on the eastern seaboard.

Finally, they believe that an adjustment of +0.3 mm / yr is necessary to account for Peltier's Glacial Isostatic Adjustments (see Section 4).

Additionally, unadjusted GRACE gravity data has suggested no lost ice mass and all estimates of ice gains or loss depend on which Glacial Isostatic Adjustments modelers choose to use.

Both are as a result of glacial isostatic adjustment, the ongoing movement of land once burdened by ice - age glaciers.

In fact, so slowly has sea level been rising that environmental - extremist scientists have tampered with the raw data by adding an imagined (and imaginary) «global isostatic adjustment», torturing the data until they show a rate of sea - level rise that has not in reality occurred.

These highstands imply an ongoing and moderate, sub - mm / yr, sea - level fall in the far field of the Late Pleistocene ice cover that has long been linked to the process of glacial isostatic adjustment (GIA; Clark et al., 1978).

Some land movements occur because of isostatic adjustment of the mantle to the melting of ice sheets at the end of the last ice age.

This is referred to as glacial isostatic adjustment (GIA).

So now there only remains for you to factor in the time lagged responses of isostatic adjustments, albedo feedback, ice melt and ocean heat accumulation to rapid forcing changes.

B. Martín - Español et al 2016 - Spatial and temporal Antarctic Ice Sheet mass trends, glacio - isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data

Box also seems not to be aware of glacial isostatic adjustment and the illusion of ice loss in Greenland and the Antarctic.

GIA, or glacial isostatic adjustment is just starting to get a run in respect of the alleged glacier declines; there are lots or papers out there if one cares to google GIA.

They also point out that the choice of glacial isostatic adjustment datasets make a difference in the estimates and that better estimates are needed, especially in the Arctic and Antarctic.

The only obvious match is what is expected: Glacial isostatic adjustment.

We suggest that the resolution of this issue is consistent with our estimate of the approximately +7 m Holsteinian global sea level, and is provided by Raymo & Mitrovica [58], who pointed out the need to make a glacial isostatic adjustment (GIA) correction for post-glacial crustal subsidence at the places where Hearty and others deduced local sea - level change.

«We have to account for the fact that the ocean basins are actually getting slightly bigger... water volume is expanding,» he said, a phenomenon they call glacial isostatic adjustment (GIA).

As can be seen isostatic adjustment makes a considerable difference to actual sea levels experienced at the time, so it is worth looking at the many other studies of the region and period which gives some additional data.

I'm at a loss to understand you you missed that glacial isostatic adjustments, groundwater removal, silt deposition, and seismic events could influence your tidal gauge graphs and that you needed to rule out those land effects before you could draw the kind of conclusions you are.

Statistically significant trends obtained from records longer than 40 years yielded sea - level - rise estimates between 1.06 — 1.75 mm / yrear - 1, with a regional average of 1.29 mm yr - 1, when corrected for global isostatic adjustment (GIA) using model data, with a regional average of 1.29 mm - 1..

Glacial isostatic adjustment, why we have glacial and interglacial periods, how we can reconstruct climate history, and how the Earth is responding to the retreat of the continental glaciers.

The data has been adjusted for glacial isostatic adjustment.

Observation of glacial isostatic adjustment in «stable» North America with GPS.

Ivins, E. R. & Wolf, D. Glacial isostatic adjustment: New developments from advanced observing systems and modeling.

A deglacial model for Antarctica: geological constraints and glaciological modelling as a basis for a new model of Antarctic glacial isostatic adjustment.

Our comparison of the GPS data to models for glacial isostatic adjustment suggests that some parts of western coastal Greenland were experiencing accelerated melting of coastal ice by the late 1990s.

Not exact matches

I see a parallel with the isostatic (hope I got the term right) adjustments to sea level.

To assess these implications, we translate global into local SLR projections using a model of spatial variation in sea - level contributions caused by isostatic deformation and changes in gravity as the Greenland and Antarctic ice sheets lose mass (36 ⇓ — 38), represented as two global 0.5 ° matrices of scalar adjustment factors to the ice sheets» respective median global contributions to SLR and (squared) to their variances.