Processes and patterns of glacier-influenced sedimentation and recent tidewater glacier dynamics in Darbel Bay, western Antarctic Peninsula
Abstract Bathymetric data of unprecedented resolution are used to provide insights into former ice dynamics and glacial processes in a western Antarctic Peninsula embayment. An assemblage of submarine glacial landforms, which includes subglacially produced streamlined features and ice-marginal ridge...
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/s0954102019000191 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102019000191 |
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crcambridgeupr:10.1017/s0954102019000191 2024-06-23T07:46:51+00:00 Processes and patterns of glacier-influenced sedimentation and recent tidewater glacier dynamics in Darbel Bay, western Antarctic Peninsula Batchelor, C.L. Dowdeswell, J.A. Hogan, K.A. Larter, R.D. Parsons, E. West, O. 2019 http://dx.doi.org/10.1017/s0954102019000191 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102019000191 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms https://www.cambridge.org/core/terms Antarctic Science volume 31, issue 4, page 218-227 ISSN 0954-1020 1365-2079 journal-article 2019 crcambridgeupr https://doi.org/10.1017/s0954102019000191 2024-06-05T04:04:38Z Abstract Bathymetric data of unprecedented resolution are used to provide insights into former ice dynamics and glacial processes in a western Antarctic Peninsula embayment. An assemblage of submarine glacial landforms, which includes subglacially produced streamlined features and ice-marginal ridges, reveals the former pattern of ice flow and retreat. A group of more than 250 small (< 1–3 m high, 10–20 m wide) and relatively evenly spaced recessional moraines was identified beyond the margin of Philippa Glacier. The small recessional moraines are interpreted to have been produced during short-lived, possibly annual re-advances of a grounded ice margin during overall retreat. This is the first time that these features have been shown to be part of the assemblage of landforms produced by tidewater glaciers on the Antarctic Peninsula. Glacier-terminus changes during the last four decades, mapped from LANDSAT satellite images, were analysed to determine whether the moraines were produced during recent still-stands or re-advances of Philippa Glacier and to further investigate the short-term (annual to decadal) variability in ice-marginal position in tidewater glacier systems. The asynchronous response of individual tidewater glaciers in Darbel Bay is interpreted to be controlled mainly by local topography rather than by glacier catchment-area size. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science Tidewater Cambridge University Press Antarctic Antarctic Peninsula Darbel ENVELOPE(-65.905,-65.905,-66.482,-66.482) Darbel Bay ENVELOPE(-66.000,-66.000,-66.500,-66.500) Philippa Glacier ENVELOPE(-66.083,-66.083,-66.667,-66.667) The Antarctic Antarctic Science 31 4 218 227 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Bathymetric data of unprecedented resolution are used to provide insights into former ice dynamics and glacial processes in a western Antarctic Peninsula embayment. An assemblage of submarine glacial landforms, which includes subglacially produced streamlined features and ice-marginal ridges, reveals the former pattern of ice flow and retreat. A group of more than 250 small (< 1–3 m high, 10–20 m wide) and relatively evenly spaced recessional moraines was identified beyond the margin of Philippa Glacier. The small recessional moraines are interpreted to have been produced during short-lived, possibly annual re-advances of a grounded ice margin during overall retreat. This is the first time that these features have been shown to be part of the assemblage of landforms produced by tidewater glaciers on the Antarctic Peninsula. Glacier-terminus changes during the last four decades, mapped from LANDSAT satellite images, were analysed to determine whether the moraines were produced during recent still-stands or re-advances of Philippa Glacier and to further investigate the short-term (annual to decadal) variability in ice-marginal position in tidewater glacier systems. The asynchronous response of individual tidewater glaciers in Darbel Bay is interpreted to be controlled mainly by local topography rather than by glacier catchment-area size. |
format |
Article in Journal/Newspaper |
author |
Batchelor, C.L. Dowdeswell, J.A. Hogan, K.A. Larter, R.D. Parsons, E. West, O. |
spellingShingle |
Batchelor, C.L. Dowdeswell, J.A. Hogan, K.A. Larter, R.D. Parsons, E. West, O. Processes and patterns of glacier-influenced sedimentation and recent tidewater glacier dynamics in Darbel Bay, western Antarctic Peninsula |
author_facet |
Batchelor, C.L. Dowdeswell, J.A. Hogan, K.A. Larter, R.D. Parsons, E. West, O. |
author_sort |
Batchelor, C.L. |
title |
Processes and patterns of glacier-influenced sedimentation and recent tidewater glacier dynamics in Darbel Bay, western Antarctic Peninsula |
title_short |
Processes and patterns of glacier-influenced sedimentation and recent tidewater glacier dynamics in Darbel Bay, western Antarctic Peninsula |
title_full |
Processes and patterns of glacier-influenced sedimentation and recent tidewater glacier dynamics in Darbel Bay, western Antarctic Peninsula |
title_fullStr |
Processes and patterns of glacier-influenced sedimentation and recent tidewater glacier dynamics in Darbel Bay, western Antarctic Peninsula |
title_full_unstemmed |
Processes and patterns of glacier-influenced sedimentation and recent tidewater glacier dynamics in Darbel Bay, western Antarctic Peninsula |
title_sort |
processes and patterns of glacier-influenced sedimentation and recent tidewater glacier dynamics in darbel bay, western antarctic peninsula |
publisher |
Cambridge University Press (CUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1017/s0954102019000191 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102019000191 |
long_lat |
ENVELOPE(-65.905,-65.905,-66.482,-66.482) ENVELOPE(-66.000,-66.000,-66.500,-66.500) ENVELOPE(-66.083,-66.083,-66.667,-66.667) |
geographic |
Antarctic Antarctic Peninsula Darbel Darbel Bay Philippa Glacier The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Darbel Darbel Bay Philippa Glacier The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Tidewater |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Tidewater |
op_source |
Antarctic Science volume 31, issue 4, page 218-227 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102019000191 |
container_title |
Antarctic Science |
container_volume |
31 |
container_issue |
4 |
container_start_page |
218 |
op_container_end_page |
227 |
_version_ |
1802648701274947584 |