Recent dramatic thinning of largest West Antarctic ice stream triggered by oceans

Autor:	Duncan J. Wingham, Eric Rignot, Andrew Shepherd, Andreas Vieli, Antony J. Payne
Rok vydání:	2004
Předmět:	geography geography.geographical_feature_category Ice stream Antarctic ice sheet Antarctic sea ice Ice shelf Ice-sheet model Geophysics Oceanography Climatology Sea ice General Earth and Planetary Sciences Cryosphere sense organs Ice sheet skin and connective tissue diseases Geology
Zdroj:	2009, State of the Cryosphere: Glaciers and Ice Sheets
ISSN:	0094-8276
Popis:	A growing body of observational data suggests that Pine Island Glacier (PIG) is changing on decadal or shorter timescales. These changes may have far-reaching consequences for the future of the West Antarctic ice sheet (WAIS) and global sea levels because of PIG's role as the ice sheet's primary drainage portal. We test the hypothesis that these changes are triggered by the adjoining ocean. Specifically, we employ an advanced numerical ice-flow model to simulate the effects of perturbations at the grounding line on PIG's dynamics. The speed at which these changes are propagated upstream implies a tight coupling between ice-sheet interior and surrounding ocean.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::38f01b689f2b7738e1bbc53a7ea09e5b https://doi.org/10.1029/2004gl021284 Zobrazit plný text záznamu Plný text