Flow of the Ross ice Shelf, Antarctica, is modulated by the ocean tide
The ice streams feeding the Ross Ice Shelf, Antarctica, have large tidally modulated (sinusoidal and stick-slip) flow, but the interaction with the ice shelf is poorly understood. We show that the flow of the Ross Ice Shelf front, up to 650 km from the ice streams, exhibits smooth, sinusoidal motion...
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ftunivtasecite:oai:ecite.utas.edu.au:82143 2023-05-15T14:02:31+02:00 Flow of the Ross ice Shelf, Antarctica, is modulated by the ocean tide Brunt, KM King, MA Fricker, HA Macayeal, DR 2010 https://doi.org/10.3189/002214310791190875 http://ecite.utas.edu.au/82143 en eng x http://dx.doi.org/10.3189/002214310791190875 Brunt, KM and King, MA and Fricker, HA and Macayeal, DR, Flow of the Ross ice Shelf, Antarctica, is modulated by the ocean tide, Journal of Glaciology, 56, (195) pp. 157-161. ISSN 0022-1430 (2010) [Refereed Article] http://ecite.utas.edu.au/82143 Earth Sciences Physical Geography and Environmental Geoscience Physical Geography and Environmental Geoscience not elsewhere classified Refereed Article PeerReviewed 2010 ftunivtasecite https://doi.org/10.3189/002214310791190875 2019-12-13T21:47:03Z The ice streams feeding the Ross Ice Shelf, Antarctica, have large tidally modulated (sinusoidal and stick-slip) flow, but the interaction with the ice shelf is poorly understood. We show that the flow of the Ross Ice Shelf front, up to 650 km from the ice streams, exhibits smooth, sinusoidal motions corresponding to tidal modulation. These observations suggest a possible linking of the ice shelf with the ice streams to form a unified system that responds to small perturbations in stresses associated with ocean tides. If this is the case, the presence of the sinusoidal motion but the absence of stickCslip motion suggests there is damping of very high-frequency signals. The dissimilar signatures of the motions observed in the ice streams and at the front of the ice shelf present challenges to model development aimed at understanding the dynamics of coupled ice-stream/ice-shelf flow and the movement of ice across grounding lines. Article in Journal/Newspaper Antarc* Antarctica Ice Shelf Journal of Glaciology Ross Ice Shelf eCite UTAS (University of Tasmania) Ross Ice Shelf Journal of Glaciology 56 195 157 161 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Physical Geography and Environmental Geoscience Physical Geography and Environmental Geoscience not elsewhere classified |
spellingShingle |
Earth Sciences Physical Geography and Environmental Geoscience Physical Geography and Environmental Geoscience not elsewhere classified Brunt, KM King, MA Fricker, HA Macayeal, DR Flow of the Ross ice Shelf, Antarctica, is modulated by the ocean tide |
topic_facet |
Earth Sciences Physical Geography and Environmental Geoscience Physical Geography and Environmental Geoscience not elsewhere classified |
description |
The ice streams feeding the Ross Ice Shelf, Antarctica, have large tidally modulated (sinusoidal and stick-slip) flow, but the interaction with the ice shelf is poorly understood. We show that the flow of the Ross Ice Shelf front, up to 650 km from the ice streams, exhibits smooth, sinusoidal motions corresponding to tidal modulation. These observations suggest a possible linking of the ice shelf with the ice streams to form a unified system that responds to small perturbations in stresses associated with ocean tides. If this is the case, the presence of the sinusoidal motion but the absence of stickCslip motion suggests there is damping of very high-frequency signals. The dissimilar signatures of the motions observed in the ice streams and at the front of the ice shelf present challenges to model development aimed at understanding the dynamics of coupled ice-stream/ice-shelf flow and the movement of ice across grounding lines. |
format |
Article in Journal/Newspaper |
author |
Brunt, KM King, MA Fricker, HA Macayeal, DR |
author_facet |
Brunt, KM King, MA Fricker, HA Macayeal, DR |
author_sort |
Brunt, KM |
title |
Flow of the Ross ice Shelf, Antarctica, is modulated by the ocean tide |
title_short |
Flow of the Ross ice Shelf, Antarctica, is modulated by the ocean tide |
title_full |
Flow of the Ross ice Shelf, Antarctica, is modulated by the ocean tide |
title_fullStr |
Flow of the Ross ice Shelf, Antarctica, is modulated by the ocean tide |
title_full_unstemmed |
Flow of the Ross ice Shelf, Antarctica, is modulated by the ocean tide |
title_sort |
flow of the ross ice shelf, antarctica, is modulated by the ocean tide |
publisher |
x |
publishDate |
2010 |
url |
https://doi.org/10.3189/002214310791190875 http://ecite.utas.edu.au/82143 |
geographic |
Ross Ice Shelf |
geographic_facet |
Ross Ice Shelf |
genre |
Antarc* Antarctica Ice Shelf Journal of Glaciology Ross Ice Shelf |
genre_facet |
Antarc* Antarctica Ice Shelf Journal of Glaciology Ross Ice Shelf |
op_relation |
http://dx.doi.org/10.3189/002214310791190875 Brunt, KM and King, MA and Fricker, HA and Macayeal, DR, Flow of the Ross ice Shelf, Antarctica, is modulated by the ocean tide, Journal of Glaciology, 56, (195) pp. 157-161. ISSN 0022-1430 (2010) [Refereed Article] http://ecite.utas.edu.au/82143 |
op_doi |
https://doi.org/10.3189/002214310791190875 |
container_title |
Journal of Glaciology |
container_volume |
56 |
container_issue |
195 |
container_start_page |
157 |
op_container_end_page |
161 |
_version_ |
1766272817408507904 |