English
 
Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

Geoid displacement about Greenland resulting from past and present-day mass changes in the Greenland Ice Sheet

Authors
/persons/resource/kevin

Fleming,  Kevin
Deutsches GeoForschungsZentrum;
Publikationen aller GRACE-unterstützten Projekte, Deutsches GeoForschungsZentrum;

Martinec,  Z.
External Organizations;
Publikationen aller GRACE-unterstützten Projekte, Deutsches GeoForschungsZentrum;

/persons/resource/janh

Hagedoorn,  Jan
1.3 Earth System Modelling, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
Publikationen aller GRACE-unterstützten Projekte, Deutsches GeoForschungsZentrum;

, 

, 

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in GFZpublic
Supplementary Material (public)
There is no public supplementary material available
Citation

Fleming, K., Martinec, Z., Hagedoorn, J. (2004): Geoid displacement about Greenland resulting from past and present-day mass changes in the Greenland Ice Sheet. - Geophysical Research Letters, 31, 6, L06617.
https://doi.org/10.1029/2004GL019469


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_231153
Abstract
Abstract [1] Predictions are presented of secular changes in the geoid arising from glacial-isostatic adjustment (GIA) following the Last Glacial Maximum and from present-day mass changes in the Greenland Ice Sheet (GIS). Geoid displacement from ongoing GIA is dominated by ice-load changes outside of Greenland at lower spherical-harmonic degrees (<30), and modified at higher degrees by the recent (last few thousand years) GIS history. Ice-margin mass changes dominate the present-day GIS geoid response, although comparable signals are obtained when considering the uncertainty range in the higher-elevation changes (>2000 m). Spatial variability is noted when the present-day GIS response is expanded to degree and order 32. This is detectable by GRACE when assuming an optimistic accuracy, but is too small by a factor of ca. 3 for an alternate accuracy estimate. Present-day GIS geoid displacement rates are generally less than the equivalent response from ice-mass changes in Antarctica, Patagonia and Alaska.