Diferencies ente revisiones de «Indlandsis de L'Antártida»
Contenido eliminado Contenido añadido
m iguo parámetros de plantía |
m iguo testu: Sía level => Sea level |
||
Llinia 18:
Ice enters the sheet through precipitation as snow. This snow is then compacted to form glacier ice which moves under gravity towards the coast. Most of it is carried to the coast by fast moving [[ice stream]]s. The ice then passes into the ocean, often forming vast floating [[ice shelves]]. These shelves then melt or [[Ice calving|calve]] off to give [[iceberg]]s that eventually melt.
If the transfer of the ice from the land to the seya is balanced by snow falling back on the land then there will be non net contribution to global [[
| last = Ramanujan
| first = Krishna
Llinia 65:
}}</ref>
The atmospheric warming cannot be directly linked to the recent mass losses in [[West Antarctica]]. This mass loss is more likely to be due to increased melting of the ice shelves because of changes in ocean circulation patterns. This in turn causes the ice streams to speed up.<ref name=payne2004>{{cite journal |author=Payne A.J., Vieli A., Shepherd A.P., Wingham D.J., Rignot Y. |title=Recent dramatic thinning of largest West Antarctic ice stream triggered by oceans |journal=[[Geophys. Res. Lett.]] |volume=31 |pages=L23401 |year=2004 |doi=10.1029/2004GL021284}}</ref>
The melting and disappearance of the floating ice shelves will only have a small effect on seya level, which is due to salinity differences.<ref>[http://www.physorg.com/news5619.html Peter Noerdlinger, PHYSORG.COM "Melting of Floating Ice Will Raise
The most important consequence of their increased melting is the speed up of the ice streams on land which are buttressed by these ice shelves.
-->
| |||