Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations
Satellite imagery reveals flowstripes on Foundation Ice Stream parallel to ice flow, and meandering features on the ice-shelf that cross-cut ice flow and are thought to be formed by water exiting a well-organised subglacial system. Here, ice-penetrating radar data show flow-parallel hard-bed landfor...
Published in: | Nature Communications |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://hdl.handle.net/1983/125adfe9-dfaf-4bc6-aa34-8eb9819e217a https://research-information.bris.ac.uk/en/publications/125adfe9-dfaf-4bc6-aa34-8eb9819e217a https://doi.org/10.1038/s41467-018-06679-z https://research-information.bris.ac.uk/ws/files/177977521/Full_text_PDF_final_published_version_.pdf |
id |
ftubristolcris:oai:research-information.bris.ac.uk:publications/125adfe9-dfaf-4bc6-aa34-8eb9819e217a |
---|---|
record_format |
openpolar |
spelling |
ftubristolcris:oai:research-information.bris.ac.uk:publications/125adfe9-dfaf-4bc6-aa34-8eb9819e217a 2024-01-28T10:05:47+01:00 Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations Jeofry, Hafeez Ross, Neil Le Brocq, Anne Graham, Alastair Li, Jilu Gogineni, Prasad Morlighem, Mathieu Jordan, Tom Siegert, Martin 2018-11-01 application/pdf https://hdl.handle.net/1983/125adfe9-dfaf-4bc6-aa34-8eb9819e217a https://research-information.bris.ac.uk/en/publications/125adfe9-dfaf-4bc6-aa34-8eb9819e217a https://doi.org/10.1038/s41467-018-06679-z https://research-information.bris.ac.uk/ws/files/177977521/Full_text_PDF_final_published_version_.pdf eng eng info:eu-repo/semantics/openAccess Jeofry , H , Ross , N , Le Brocq , A , Graham , A , Li , J , Gogineni , P , Morlighem , M , Jordan , T & Siegert , M 2018 , ' Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations ' , Nature Communications , vol. 9 , 4576 . https://doi.org/10.1038/s41467-018-06679-z article 2018 ftubristolcris https://doi.org/10.1038/s41467-018-06679-z 2024-01-04T23:57:56Z Satellite imagery reveals flowstripes on Foundation Ice Stream parallel to ice flow, and meandering features on the ice-shelf that cross-cut ice flow and are thought to be formed by water exiting a well-organised subglacial system. Here, ice-penetrating radar data show flow-parallel hard-bed landforms beneath the grounded ice, and channels incised upwards into the ice shelf beneath meandering surface channels. As the ice transitions to flotation, the ice shelf incorporates a corrugation resulting from the landforms. Radar reveals the presence of subglacial water alongside the landforms, indicating a well-organised drainage system in which water exits the ice sheet as a point source, mixes with cavity water and incises upwards into a corrugation peak, accentuating the corrugation downstream. Hard-bedded landforms influence both subglacial hydrology and ice-shelf structure and, as they are known to be widespread on formerly glaciated terrain, their influence on the ice-sheet-shelf transition could be more widespread than thought previously. Article in Journal/Newspaper Foundation Ice Stream Ice Sheet Ice Shelf University of Bristol: Bristol Research Foundation Ice Stream ENVELOPE(-60.000,-60.000,-83.250,-83.250) Nature Communications 9 1 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
description |
Satellite imagery reveals flowstripes on Foundation Ice Stream parallel to ice flow, and meandering features on the ice-shelf that cross-cut ice flow and are thought to be formed by water exiting a well-organised subglacial system. Here, ice-penetrating radar data show flow-parallel hard-bed landforms beneath the grounded ice, and channels incised upwards into the ice shelf beneath meandering surface channels. As the ice transitions to flotation, the ice shelf incorporates a corrugation resulting from the landforms. Radar reveals the presence of subglacial water alongside the landforms, indicating a well-organised drainage system in which water exits the ice sheet as a point source, mixes with cavity water and incises upwards into a corrugation peak, accentuating the corrugation downstream. Hard-bedded landforms influence both subglacial hydrology and ice-shelf structure and, as they are known to be widespread on formerly glaciated terrain, their influence on the ice-sheet-shelf transition could be more widespread than thought previously. |
format |
Article in Journal/Newspaper |
author |
Jeofry, Hafeez Ross, Neil Le Brocq, Anne Graham, Alastair Li, Jilu Gogineni, Prasad Morlighem, Mathieu Jordan, Tom Siegert, Martin |
spellingShingle |
Jeofry, Hafeez Ross, Neil Le Brocq, Anne Graham, Alastair Li, Jilu Gogineni, Prasad Morlighem, Mathieu Jordan, Tom Siegert, Martin Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations |
author_facet |
Jeofry, Hafeez Ross, Neil Le Brocq, Anne Graham, Alastair Li, Jilu Gogineni, Prasad Morlighem, Mathieu Jordan, Tom Siegert, Martin |
author_sort |
Jeofry, Hafeez |
title |
Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations |
title_short |
Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations |
title_full |
Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations |
title_fullStr |
Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations |
title_full_unstemmed |
Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations |
title_sort |
hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations |
publishDate |
2018 |
url |
https://hdl.handle.net/1983/125adfe9-dfaf-4bc6-aa34-8eb9819e217a https://research-information.bris.ac.uk/en/publications/125adfe9-dfaf-4bc6-aa34-8eb9819e217a https://doi.org/10.1038/s41467-018-06679-z https://research-information.bris.ac.uk/ws/files/177977521/Full_text_PDF_final_published_version_.pdf |
long_lat |
ENVELOPE(-60.000,-60.000,-83.250,-83.250) |
geographic |
Foundation Ice Stream |
geographic_facet |
Foundation Ice Stream |
genre |
Foundation Ice Stream Ice Sheet Ice Shelf |
genre_facet |
Foundation Ice Stream Ice Sheet Ice Shelf |
op_source |
Jeofry , H , Ross , N , Le Brocq , A , Graham , A , Li , J , Gogineni , P , Morlighem , M , Jordan , T & Siegert , M 2018 , ' Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations ' , Nature Communications , vol. 9 , 4576 . https://doi.org/10.1038/s41467-018-06679-z |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-018-06679-z |
container_title |
Nature Communications |
container_volume |
9 |
container_issue |
1 |
_version_ |
1789332285099606016 |