| Title | Fortnightly variations in the flow velocity of Rutford ice stream, West Antarctica |
| Author | Gudmundsson, G.H. |
| Author Affil | Gudmundsson, G.H., British Antarctic Survey, Cambridge, United Kingdom |
| Source | Nature (London), 444(7122), p.1063- 1064. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028- 0836 |
| Publication Date | Dec. 21, 2006 |
| Notes | In English. 15 refs. GeoRef Acc. No: 299697. CRREL Acc. No: 64004434 |
| Index Terms | glacial geology; radar; synthetic aperture radar; tides; variations; velocity; Antarctica--West Antarctic ice sheet; Antarctica--West Antarctica; Antarctic ice sheet; Antarctica; flows; Global Positioning System; ice streams; InSAR; ocean circulation; radar methods; Rutford ice stream; SAR; sea-level changes; West Antarctic ice sheet; West Antarctica |
| Abstract | Field measurements over seven-week period in 2003-04 season show that surface velocities on major West Antarctic ice stream vary periodically by about 20% every two weeks as result of tidal forcing. Tidally induced motion on ice streams has previously been thought to be limited to diurnal or even shorter-term variation. Results indicate potential pitfalls of using repeated velocity measurements over intervals of days to infer long-term change and for estimating potential contribution of Antarctic ice sheet to global sea-level change (mod. journ. abst.) |
| URL | http://hdl.handle.net/10.1038/nature05430 |
| Publication Type | journal article |
| Record ID | 88343 |